WO2019087475A1 - 前処理剤および化成処理剤 - Google Patents
前処理剤および化成処理剤 Download PDFInfo
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- WO2019087475A1 WO2019087475A1 PCT/JP2018/027216 JP2018027216W WO2019087475A1 WO 2019087475 A1 WO2019087475 A1 WO 2019087475A1 JP 2018027216 W JP2018027216 W JP 2018027216W WO 2019087475 A1 WO2019087475 A1 WO 2019087475A1
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- chemical conversion
- metal material
- conversion treatment
- zirconium
- coating
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- C—CHEMISTRY; METALLURGY
- C23—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
- C23C—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THE SURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL
- C23C22/00—Chemical surface treatment of metallic material by reaction of the surface with a reactive liquid, leaving reaction products of surface material in the coating, e.g. conversion coatings, passivation of metals
- C23C22/05—Chemical surface treatment of metallic material by reaction of the surface with a reactive liquid, leaving reaction products of surface material in the coating, e.g. conversion coatings, passivation of metals using aqueous solutions
- C23C22/06—Chemical surface treatment of metallic material by reaction of the surface with a reactive liquid, leaving reaction products of surface material in the coating, e.g. conversion coatings, passivation of metals using aqueous solutions using aqueous acidic solutions with pH less than 6
- C23C22/34—Chemical surface treatment of metallic material by reaction of the surface with a reactive liquid, leaving reaction products of surface material in the coating, e.g. conversion coatings, passivation of metals using aqueous solutions using aqueous acidic solutions with pH less than 6 containing fluorides or complex fluorides
- C23C22/36—Chemical surface treatment of metallic material by reaction of the surface with a reactive liquid, leaving reaction products of surface material in the coating, e.g. conversion coatings, passivation of metals using aqueous solutions using aqueous acidic solutions with pH less than 6 containing fluorides or complex fluorides containing also phosphates
- C23C22/361—Chemical surface treatment of metallic material by reaction of the surface with a reactive liquid, leaving reaction products of surface material in the coating, e.g. conversion coatings, passivation of metals using aqueous solutions using aqueous acidic solutions with pH less than 6 containing fluorides or complex fluorides containing also phosphates containing titanium, zirconium or hafnium compounds
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05D—PROCESSES FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05D3/00—Pretreatment of surfaces to which liquids or other fluent materials are to be applied; After-treatment of applied coatings, e.g. intermediate treating of an applied coating preparatory to subsequent applications of liquids or other fluent materials
- B05D3/10—Pretreatment of surfaces to which liquids or other fluent materials are to be applied; After-treatment of applied coatings, e.g. intermediate treating of an applied coating preparatory to subsequent applications of liquids or other fluent materials by other chemical means
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05D—PROCESSES FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05D3/00—Pretreatment of surfaces to which liquids or other fluent materials are to be applied; After-treatment of applied coatings, e.g. intermediate treating of an applied coating preparatory to subsequent applications of liquids or other fluent materials
- B05D3/10—Pretreatment of surfaces to which liquids or other fluent materials are to be applied; After-treatment of applied coatings, e.g. intermediate treating of an applied coating preparatory to subsequent applications of liquids or other fluent materials by other chemical means
- B05D3/102—Pretreatment of metallic substrates
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05D—PROCESSES FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05D7/00—Processes, other than flocking, specially adapted for applying liquids or other fluent materials to particular surfaces or for applying particular liquids or other fluent materials
- B05D7/14—Processes, other than flocking, specially adapted for applying liquids or other fluent materials to particular surfaces or for applying particular liquids or other fluent materials to metal, e.g. car bodies
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B15/00—Layered products comprising a layer of metal
- B32B15/01—Layered products comprising a layer of metal all layers being exclusively metallic
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- C—CHEMISTRY; METALLURGY
- C23—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
- C23C—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THE SURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL
- C23C22/00—Chemical surface treatment of metallic material by reaction of the surface with a reactive liquid, leaving reaction products of surface material in the coating, e.g. conversion coatings, passivation of metals
- C23C22/05—Chemical surface treatment of metallic material by reaction of the surface with a reactive liquid, leaving reaction products of surface material in the coating, e.g. conversion coatings, passivation of metals using aqueous solutions
- C23C22/06—Chemical surface treatment of metallic material by reaction of the surface with a reactive liquid, leaving reaction products of surface material in the coating, e.g. conversion coatings, passivation of metals using aqueous solutions using aqueous acidic solutions with pH less than 6
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- C—CHEMISTRY; METALLURGY
- C23—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
- C23C—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THE SURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL
- C23C22/00—Chemical surface treatment of metallic material by reaction of the surface with a reactive liquid, leaving reaction products of surface material in the coating, e.g. conversion coatings, passivation of metals
- C23C22/05—Chemical surface treatment of metallic material by reaction of the surface with a reactive liquid, leaving reaction products of surface material in the coating, e.g. conversion coatings, passivation of metals using aqueous solutions
- C23C22/06—Chemical surface treatment of metallic material by reaction of the surface with a reactive liquid, leaving reaction products of surface material in the coating, e.g. conversion coatings, passivation of metals using aqueous solutions using aqueous acidic solutions with pH less than 6
- C23C22/34—Chemical surface treatment of metallic material by reaction of the surface with a reactive liquid, leaving reaction products of surface material in the coating, e.g. conversion coatings, passivation of metals using aqueous solutions using aqueous acidic solutions with pH less than 6 containing fluorides or complex fluorides
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- C—CHEMISTRY; METALLURGY
- C23—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
- C23C—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THE SURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL
- C23C22/00—Chemical surface treatment of metallic material by reaction of the surface with a reactive liquid, leaving reaction products of surface material in the coating, e.g. conversion coatings, passivation of metals
- C23C22/05—Chemical surface treatment of metallic material by reaction of the surface with a reactive liquid, leaving reaction products of surface material in the coating, e.g. conversion coatings, passivation of metals using aqueous solutions
- C23C22/06—Chemical surface treatment of metallic material by reaction of the surface with a reactive liquid, leaving reaction products of surface material in the coating, e.g. conversion coatings, passivation of metals using aqueous solutions using aqueous acidic solutions with pH less than 6
- C23C22/48—Chemical surface treatment of metallic material by reaction of the surface with a reactive liquid, leaving reaction products of surface material in the coating, e.g. conversion coatings, passivation of metals using aqueous solutions using aqueous acidic solutions with pH less than 6 not containing phosphates, hexavalent chromium compounds, fluorides or complex fluorides, molybdates, tungstates, vanadates or oxalates
- C23C22/50—Treatment of iron or alloys based thereon
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- C—CHEMISTRY; METALLURGY
- C23—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
- C23C—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THE SURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL
- C23C22/00—Chemical surface treatment of metallic material by reaction of the surface with a reactive liquid, leaving reaction products of surface material in the coating, e.g. conversion coatings, passivation of metals
- C23C22/05—Chemical surface treatment of metallic material by reaction of the surface with a reactive liquid, leaving reaction products of surface material in the coating, e.g. conversion coatings, passivation of metals using aqueous solutions
- C23C22/68—Chemical surface treatment of metallic material by reaction of the surface with a reactive liquid, leaving reaction products of surface material in the coating, e.g. conversion coatings, passivation of metals using aqueous solutions using aqueous solutions with pH between 6 and 8
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- C—CHEMISTRY; METALLURGY
- C23—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
- C23C—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THE SURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL
- C23C22/00—Chemical surface treatment of metallic material by reaction of the surface with a reactive liquid, leaving reaction products of surface material in the coating, e.g. conversion coatings, passivation of metals
- C23C22/78—Pretreatment of the material to be coated
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- C—CHEMISTRY; METALLURGY
- C23—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
- C23C—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THE SURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL
- C23C22/00—Chemical surface treatment of metallic material by reaction of the surface with a reactive liquid, leaving reaction products of surface material in the coating, e.g. conversion coatings, passivation of metals
- C23C22/78—Pretreatment of the material to be coated
- C23C22/80—Pretreatment of the material to be coated with solutions containing titanium or zirconium compounds
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- C—CHEMISTRY; METALLURGY
- C25—ELECTROLYTIC OR ELECTROPHORETIC PROCESSES; APPARATUS THEREFOR
- C25D—PROCESSES FOR THE ELECTROLYTIC OR ELECTROPHORETIC PRODUCTION OF COATINGS; ELECTROFORMING; APPARATUS THEREFOR
- C25D13/00—Electrophoretic coating characterised by the process
- C25D13/22—Servicing or operating apparatus or multistep processes
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- C—CHEMISTRY; METALLURGY
- C23—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
- C23C—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THE SURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL
- C23C2222/00—Aspects relating to chemical surface treatment of metallic material by reaction of the surface with a reactive medium
- C23C2222/20—Use of solutions containing silanes
Definitions
- the present invention relates to a pre-treatment agent, a chemical conversion treatment agent, a film formed by the above-mentioned pretreatment agent, and / or the above-mentioned chemical conversion treatment agent used for pretreatment of chemical conversion treatment for forming a chemical conversion film on the surface of metal material
- the present invention relates to a metal material having a chemical conversion film formed by
- the metal material having the chemical conversion film obtained after treating the metal surface with the solution composition described in Patent Document 1 is sufficient at the edge portion of the coated metal material even when the coating film is formed by coating.
- the coating does not exhibit corrosion resistance or the coating does not have sufficient adhesion.
- a chemical conversion film having sufficient corrosion resistance may not be obtained, or the adhesion of the coating film on the chemical conversion film may not be sufficient. Therefore, the present invention provides a metal surface treatment agent which exhibits excellent corrosion resistance and can exhibit excellent coating film adhesion in a coated metal material, and a technique of metal surface treatment using the metal surface treatment agent, etc. Intended to provide.
- the corrosion resistance of the burrs of the edge can be improved, and the adhesion to the coating film can be improved, and a chemical conversion treatment capable of forming a chemical conversion film can be performed. It is an object of the present invention to provide techniques such as a pre-treatment agent and a pre-treatment method of chemical conversion treatment using the pre-treatment agent.
- a chemical conversion treatment agent which is useful for a method of manufacturing a metal material to which the pretreatment method is applied and which can provide excellent corrosion resistance regardless of the type of metal material, and a chemical conversion treatment using the chemical conversion treatment agent It is also an object to provide techniques such as methods.
- the present inventors conducted chemical conversion treatment by performing pretreatment using a specific pretreatment agent before performing chemical conversion treatment on the surface of the metal material or on the surface. It has been found that it has excellent corrosion resistance in the burrs at the edge of the metal material having a coating film formed later, and has excellent adhesion in the coating film. Moreover, it discovered that it was useful to the manufacturing method of the metal material to which the said pre-treatment was applied, and was able to bring about the outstanding corrosion resistance irrespective of the kind of metal material by using a specific metal surface treating agent. Thus, the inventor has completed the present invention.
- the present invention provides the following (I) to (XVII).
- (III) A method for producing a metallic material, comprising a pretreatment step of bringing the pretreatment agent according to (I) or (II) above into contact with the surface of the metallic material or on the surface.
- IV) The manufacturing method of the metallic material as described in said (III) which further includes the chemical conversion treatment process which forms a chemical conversion film on the surface of a metallic material after the said pre-processing process.
- V) A metal material having a chemical conversion film obtained by the production method described in the above (IV).
- the manufacturing method of the coating metal material which further includes the coating process of coating a metal material after the chemical conversion treatment process as described in said (IV).
- (VII) A coated metal material having a coating on the surface of the metal material having the chemical conversion film as described in (V) above.
- zirconium molar concentration zirconium alkoxide (a) (a M)
- the ratio between the terms of zirconium molar concentration of a source of ions (b) containing zirconium (b M) [a M / b M] is 0
- the conversion treatment agent as described in (VIII) or (IX) which is .01 or more and 10 or less.
- XI The chemical conversion treatment agent according to any one of (VIII) to (X), further comprising an organosilane compound (d) having an alkoxysilyl group.
- (XII) The chemical conversion treatment agent according to any one of (VIII) to (XI), further comprising a source (f) of at least one ion selected from nitrate ion and sulfate ion.
- (XIII) A method for producing a metallic material having a chemical conversion film, comprising a chemical conversion treatment step of bringing the chemical conversion treatment agent according to any one of (VIII) to (XII) into contact with the surface of the metal material or on the surface.
- (XIV) The production method according to (XIII), including a pretreatment step of bringing the pretreatment agent according to (I) or (II) into contact with the surface of the metal material or the surface before the chemical conversion treatment step.
- (XV) A metal material having a chemical conversion film formed by the method according to (XIII) or (XIV).
- (XVI) A method for producing a coated metal material, the method further comprising a coating step of coating the metal material after the conversion treatment step described in (XIII) or (XIV).
- (XVII) A coated metal material having a coating on the surface of the metal material having the chemical conversion film according to (XV).
- the corrosion resistance of the burr part of an edge can be improved, and the adhesiveness with a coating film can be improved, and the chemical conversion treatment which can form a chemical conversion film is possible. It is possible to provide techniques such as a pre-treatment agent and a pre-treatment method of chemical conversion treatment using the pre-treatment agent. Moreover, it is useful for the manufacturing method of the metallic material to which this pretreatment method is applied, and can provide excellent corrosion resistance regardless of the type of metallic material, chemical conversion treatment agent, metal surface treatment using the chemical conversion treatment agent Technologies such as methods can also be provided.
- the pretreatment agent according to the embodiment of the present invention is a pretreatment agent used for pretreatment of chemical conversion treatment for forming a chemical conversion film on the surface of a metal material, and is selected from zirconium, titanium, vanadium, and aluminum.
- the pretreatment agent according to the present embodiment a method for producing the same, a pretreatment method for a metal material with the pretreatment agent, a chemical conversion treatment method after pretreatment, a metallic material having a chemical conversion film formed by a chemical conversion treatment method, chemical conversion treatment
- the chemical conversion treatment agent etc. which are used for a method are demonstrated.
- this invention can be arbitrarily changed in the range including the summary, and is not limited only to the following embodiment.
- the pretreatment agent comprises a metal alkoxide (A) containing at least one metal element selected from zirconium, titanium, vanadium and aluminum in a liquid medium, methanesulfonic acid and ethanesulfone It may be a blend of at least one sulfonic acid (B) selected from an acid, hydroxymethane sulfonic acid, and hydroxyethane sulfonic acid, but it may be a blend of other components. Good.
- A metal alkoxide
- B sulfonic acid
- an organosilane compound (C) having an alkoxysilyl group for example, addition of an organosilane compound (C) having an alkoxysilyl group, a pH adjuster, a surfactant for adjusting the wettability of an object to be treated, a surfactant called an antifoamer, etc. Agents can be mentioned.
- metal alkoxide (A) containing at least one metal element selected from zirconium, titanium, vanadium and aluminum are zirconium, titanium and vanadium. , And aluminum, and one of these metal elements may be selected, or two or more metal elements may be selected.
- Examples of combinations of two or more metal elements include zirconium and titanium, zirconium and vanadium, zirconium and aluminum, titanium and vanadium, titanium and vanadium, vanadium and aluminum, zirconium and titanium, zirconium and titanium, vanadium, zirconium and titanium and aluminum, titanium and the like Vanadium and aluminum, zirconium and titanium, vanadium and aluminum and the like can be mentioned.
- the metal alkoxide (A) in the pretreatment agent may be in the form as it is, may be in the form of a hydrolyzate obtained by hydrolysis of the metal alkoxide (A), or the hydrolyzate is It may be in the form of a condensation-polymerized product, or a plurality of forms may be mixed.
- the metal alkoxide (A) is a substance having a structure in which a metal atom and an oxygen atom of an alkoxy group are bonded, and may have a structure having two or more metal elements in one molecule, and in this case, the same metal It may be an element or may be a different metal element.
- the hydrocarbon group of the alkoxy group is preferably a hydrocarbon group having 1 to 10 carbon atoms, and more preferably a hydrocarbon group having 2 to 8 carbon atoms.
- metal alkoxide (A) examples include zirconium tetrapropoxide, zirconium tetraisopropoxide, zirconium tetranormal propoxide, zirconium tetranormal butoxide, titanium methoxide, titanium ethoxide, titanium tetraisopropoxide, titanium tetranormal butoxide, Titanium butoxide dimer, titanium tetra-2-ethylhexoxide, triisopropoxide vanadium (V) oxide, vanadium butoxide, triethoxy vanadium (V) oxide, aluminum isopropoxide, aluminum tert-butoxide, aluminum trisecondary butoxide And the like, although not limited thereto.
- One of these compounds may be used alone, or two or more thereof may be combined.
- the amount of metal alkoxide (A) to be added to the pretreatment agent is not particularly limited, but it is generally 0.01 mmol / L or more, preferably 0.05 mmol / L or more, in terms of metal equivalent molar concentration, and It is usually 2.0 mmol / L or less.
- At least one sulfonic acid (B) (hereinafter also referred to as sulfonic acid component (B)) selected from methanesulfonic acid, ethanesulfonic acid, hydroxymethanesulfonic acid and hydroxyethanesulfonic acid is selected from the above
- sulfonic acid component (B) selected from methanesulfonic acid, ethanesulfonic acid, hydroxymethanesulfonic acid and hydroxyethanesulfonic acid is selected from the above
- One kind of sulfonic acid may be used alone, or two or more kinds of sulfonic acids selected from the above may be used in combination.
- the metal conversion molar concentration of the metal alkoxide (A) is [A M ] and the molar concentration of the sulfonic acid to be added to the pretreatment agent is [B M ]
- the molar concentration ratio [B M ] / [A M ] Is preferably 2.0 or more, and more preferably 2.5 or more.
- production of a precipitate can be suppressed in a pre-processing agent because [B M ] / [A M ] is 2.0 or more.
- the upper limit value of [B M ] / [A M ] is not particularly limited, but is preferably 10.0 or less from the viewpoint of the cost of the pretreatment agent.
- the pre-treatment agent preferably contains one or more organosilane compounds (C) having an alkoxysilyl group (hereinafter also referred to as organosilane compounds (C)).
- organosilane compounds (C) in the pretreatment agent may be in the form as it is, or it may be in the form of a hydrolyzate obtained by hydrolysis of the organosilane compound (C). It may be in the form of a condensation-polymerized product, or a copolymer obtained by copolymerizing a hydrolyzate obtained by hydrolysis of metal alkoxide (A) and a hydrolyzate obtained by hydrolysis of organic silane compound (C).
- the organic silane compound (C) is not particularly limited as long as it is an organic silane compound having an alkoxysilyl group in the molecule.
- the organosilane compound (C) may have a vinyl group, glycidyl group, styryl group, methacryl group, acryl group, amino group, ureido group, mercapto group, isocyanate group or the like as another functional group. It is preferable to use an organic silane compound having an alkoxysilyl group and having an amino group or a glycidyl group in the molecule from the viewpoint of coating film adhesion and corrosion resistance.
- the organic silane compound (C) is not particularly limited as long as it has an alkoxysilyl group in the molecule, but, for example, 3-glycid when having a glycidyl group in the organic silane compound (C) Xylpropylmethyldimethoxysilane, 3-glycidoxypropyldimethylmethoxysilane, 3-glycidoxypropyltrimethoxysilane, 3-glycidoxypropylethyl diethoxysilane, 3-glycidoxypropyl diethylethoxysilane, 3-glycidoxypropyldiethoxysilane Examples thereof include cidoxypropyltriethoxysilane, 2- (3,4-epoxycyclohexyl) ethyltrimethoxysilane, 2- (3,4-epoxycyclohexyl) ethyltrimethoxysilane and the like.
- organosilane compound (C) orthosilicate tetramethyl, orthosilicate tetraethyl, methyltrimethoxysilane, dimethyldimethoxysilane, trimethyldimethoxysilane, trimethylmethoxysilane, trimethylethoxysilane, dimethyldiethoxysilane, ethyltriethoxysilane, vinyltrimethoxysilane , Vinyltriethoxysilane, p-styryltrimethoxysilane, 3-acryloxypropyltrimethoxysilane, phenyltriethoxysilane, phenyltrimethoxysilane, hexyltrimethoxysilane, hexyltriethoxysilane, 3-methacryloxypropylmethyldimethoxysilane , 3-methacryloxypropyltrimethoxysilane, 3-methacryloxypropylmethyldiethoxysilane, 3-methacryl
- the metal conversion molar concentration of the metal alkoxide (A) is [A M ] and the silicon conversion molar concentration of the organic silane compound (C) to be added to the pretreatment agent is [C M ], [C M ] / [A M 2 ] is preferably in the range of 0.1 to 10.0, and more preferably in the range of 0.2 to 5.0.
- the pH of the pretreatment agent is not particularly limited, but is preferably 1.0 or more and 12.0 or less, and more preferably 1.5 or more and 5.0 or less.
- the pH of the pretreatment agent is a value measured for the pretreatment agent at 25 ° C. using a pH meter.
- a pH adjuster may be used to bring the pH of the pretreatment agent into the above range.
- pH adjuster that can be used when it is desired to raise the pH
- an aqueous solution of sodium hydroxide, an aqueous solution of potassium hydroxide, aqueous ammonia and the like are preferable.
- pH adjusters that can be used to lower the pH are not particularly limited.
- These pH adjusters may be used alone or in combination of two or more.
- the pretreatment agent may contain a component containing a metal element such as Fe, Zn, Al or Mg (for example, a metal salt).
- a metal element such as Fe, Zn, Al or Mg
- components which are inevitably mixed in operation, such as P, may be similarly mixed. These components may be inevitably mixed in the pretreatment agent, or may be intentionally included in the pretreatment agent.
- the method for producing the pretreatment agent is not particularly limited, but, for example, metal alkoxide (A), sulfonic acid component (B), and, if necessary, organic silane compound (C) may be appropriately mixed.
- the liquid medium is not particularly limited, but water (deionized water, distilled water) is preferable, but a water-miscible organic solvent such as a lower alcohol may be further contained at less than 50% by weight.
- the pretreatment method includes a pretreatment step of bringing the pretreatment agent according to the present embodiment into contact with the surface or the surface of the metal material.
- the pretreatment method may include washing with water after the pretreatment step.
- a degreasing step may be included to remove oil and deposits on the surface of the metal material called degreasing.
- the method of degreasing treatment is not particularly limited, and known methods can be applied. Water washing may or may not be performed after the degreasing treatment step.
- a contact method of a pretreatment agent processing methods, such as a publicly known contact method, for example, a dip treatment method, a spray treatment method, a pouring treatment method, or these combination are mentioned.
- the contact of the pretreatment agent is preferably performed at a predetermined temperature for a fixed period.
- the contact temperature is usually 5 ° C. or more and 60 ° C. or less, preferably 10 ° C. or more and 50 ° C. or less, but is not particularly limited.
- the contact time between the pretreatment agent and the metal material is usually 5 seconds or more and 600 seconds or less, preferably 10 seconds or more and 300 seconds or less, but it is not particularly limited.
- Another embodiment of the present invention is a metal having a conversion film, comprising a conversion treatment step of forming a conversion film on the surface of the metal material after contacting the above-described pretreatment agent on the surface or surface of the metal material. It also relates to the method of manufacturing the material.
- the present invention also relates to a metal material having a chemical conversion film obtained by the manufacturing method.
- the chemical conversion treatment process is not particularly limited as long as it is a treatment for forming a chemical conversion film, and for example, a zirconium chemical conversion treatment process, a titanium chemical conversion treatment process, a hafnium chemical conversion treatment process, a vanadium chemical conversion treatment process, an iron phosphate chemical conversion treatment process, phosphoric acid A zinc conversion treatment process etc. are mentioned.
- the various chemical conversion treatment steps may be performed only in one step or may be sequentially performed by combining two or more steps. In the case where a plurality of the above two or more steps are combined, water washing may or may not be performed after the various post-processes, or part of the water washing may be omitted.
- a conditioning process may be performed on the metal material. A well-known method can be used as this surface conditioning treatment method.
- the temperature or contact time of the chemical conversion treatment agent in the chemical conversion treatment step can be appropriately set according to the type of the chemical conversion treatment step, the concentration of the chemical conversion treatment agent, and the like.
- the above-mentioned iron phosphate conversion treatment step or zinc phosphate conversion treatment step and a predetermined conversion treatment step of forming another chemical conversion film on the conversion film obtained by these steps And may be included.
- the chemical conversion treatment step of forming another chemical conversion film include various chemical conversion treatment steps such as a zirconium chemical conversion treatment step, a titanium chemical conversion treatment step, a hafnium chemical conversion treatment step, and a vanadium chemical conversion treatment step.
- the corrosion resistance of the metal material can be further improved by performing one of various chemical conversion treatment steps or two different chemical conversion treatment steps.
- Another embodiment of the present invention also relates to a method for producing a coated metal material, which comprises a coating step of coating on the surface of the metal material having the above-mentioned conversion coating.
- the present invention also relates to a coated metal material having a coating on the surface of the metal material having the chemical conversion film obtained by the above-mentioned production method.
- the coating method is not particularly limited, and known methods such as roll coating, electrodeposition coating (for example, cationic electrodeposition coating), spray coating, hot spray coating, airless spray coating, electrostatic coating (for example, electrostatic powder) Methods such as coating), roller coating, curtain flow coating, brush coating, bar coating, fluid immersion, etc. can be applied.
- the surface of the metal material having the chemical conversion film may be washed with water or may not be washed with water.
- the surface of the metal material after or without water washing may or may not be dried.
- paint examples include oil paint, cellulose derivative paint, phenol resin paint, alkyd resin paint, amino alkyd resin paint, urea resin paint, unsaturated resin paint, vinyl resin paint, acrylic resin paint, epoxy resin paint, polyurethane
- paints such as a resin paint, a silicone resin paint, a fluorine resin paint, an anticorrosion paint, an antifouling paint, a powder paint, a cationic electrodeposition paint, an anionic electrodeposition paint, a water-based paint, a solvent paint, etc. are mentioned.
- the drying step is a process of drying and curing the coated paint.
- drying method for example, natural drying, reduced pressure drying, convection heat drying (for example, natural convection heat drying, forced convection heat drying), radiation drying (for example, near infrared radiation drying, far infrared radiation drying), UV curing Drying methods such as drying, electron beam curing drying, vapor curing, baking drying and the like can be mentioned.
- convection heat drying for example, natural convection heat drying, forced convection heat drying
- radiation drying for example, near infrared radiation drying, far infrared radiation drying
- UV curing Drying methods such as drying, electron beam curing drying, vapor curing, baking drying and the like can be mentioned.
- one drying method may be implemented and you may implement combining two or more.
- a publicly known method can be applied as the above-mentioned cationic electrodeposition coating.
- the method of immersing the metal material which has a chemical conversion film in this paint etc. is used, using a cationic electrodeposition paint containing an amine addition epoxy resin and blocking polyisocyanate curing agent as a hardening ingredient as paint.
- the cationic electrodeposition coating is performed, for example, by maintaining the temperature of the paint at a predetermined temperature and applying a voltage in the direction of the cathode to a metal material having a chemical conversion film using a rectifier while stirring the paint.
- a film can be formed on the chemical conversion film by carrying out water washing and baking on the metal material thus subjected to cationic electrodeposition coating.
- Baking is performed for a fixed time in a predetermined temperature range. Specifically, it is performed at 170 ° C. for 20 minutes.
- the cationic electrodeposition coating method using a cationic electrodeposition paint is applied, for example, the sodium ion concentration in the treatment agent used in the degreasing step, the pretreatment step, various chemical conversion treatment steps, etc. is less than 500 ppm on a mass basis It is preferable to control the
- a publicly known method can be applied as a coating method such as spray coating, electrostatic powder coating, or fluid immersion method using a powder coating.
- powder coating materials for example, those containing a polyester resin and, as a curing agent, a blocked isocyanate curing agent, a ⁇ -hydroxyalkylamide curing agent (for example, see JP-A-2011-88083) or triglycidyl isocyanurate Can be mentioned.
- Baking is performed for a fixed time in a predetermined temperature range. Specifically, it is carried out at 150 to 250 ° C. for 20 minutes.
- a known method can be applied as a coating method such as spray coating, electrostatic coating, bar coating or the like using the above-mentioned solvent paint.
- the solvent paint include those containing a resin such as melamine resin, acrylic resin, urethane resin and polyester resin, and an organic solvent such as thinner. Baking is performed for a fixed time in a predetermined temperature range. Specifically, it is performed at 130 ° C. for 20 minutes.
- the coating film obtained by the coating process may be a single layer or multiple layers.
- the paint for forming various coating films, the coating method using this paint, the drying method of the coated metal material, etc. may be same or different, respectively.
- the type of metal material is not particularly limited. Examples thereof include steel materials (eg, cold-rolled steel plate, hot-rolled steel plate, black skin, pickled steel plate, high-tensile steel plate, tool steel, alloy tool steel, spheroidized graphite cast iron, gray cast iron, etc.); plating Materials, for example, galvanizing materials (eg, galvanizing, hot-dip galvanizing, aluminum-containing galvanizing, galvanizing, zinc-nickel plating, zinc-cobalt plating, vapor deposition galvanizing, etc.), zinc alloy plating materials (for example, alloyed Hot dip galvanization, Zn-Al alloy plating, Zn-Al-Mg alloy plating, electro zinc alloy plating, etc., aluminum plating material, nickel plating material, tin plating material, chromium plating material, chromium alloy plating material (for example, Cr- Ni alloy plating etc.), etc .; Aluminum material or aluminum alloy material (eg, 1000 series, 2000 series, 3000 series,
- the metal material which has a chemical conversion film can be manufactured by the manufacturing method of the metal material which has the said chemical conversion film.
- the chemical conversion film include zirconium chemical conversion film, titanium chemical conversion film, hafnium chemical conversion film, vanadium chemical conversion film, iron phosphate chemical conversion film, zinc phosphate chemical conversion film and the like.
- the chemical conversion film may be one layer or two or more layers.
- the mass of the formed conversion film is the conversion per unit area of the metal material surface.
- the mass of zirconium, titanium, hafnium or vanadium in the film is preferably 5 mg / m 2 or more and 500 mg / m 2 or less, more preferably 10 mg / m 2 or more and 250 mg / m 2 or less. It is not limited.
- the chemical conversion film contains two or more metal elements (for example, zirconium, titanium, hafnium, vanadium, etc.), the total of them is preferably within the above range.
- the weight of the conversion film is 0.1 g / m 2 or more 2.0 g in terms of the mass converted from phosphorus in the conversion film as iron phosphate per unit area of the metal material surface. preferably / m 2 or less, do not preferred but is limited to the range that is 0.2 g / m 2 or more 1.5 g / m 2 or less.
- the mass of the conversion film is preferably 0.5 g / m 2 or more and 10 g / m 2 or less per unit area of the metal material surface, and 1.0 g / m 2 or more. More preferably, it is not more than 0.
- the mass of the conversion film is preferably 1.0 g / m 2 or more and 10 g / m 2 or less per unit area of the metal material surface, and 2.0 g / m 2 or more 8 Although it is preferable that it is less than 0 g / m 2 , it is not limited to this range.
- the metal content in the chemical conversion film such as a zirconium chemical conversion film, a titanium chemical conversion film, a hafnium chemical conversion film, or a vanadium chemical conversion film can be measured by ICP emission spectral analysis after dissolving the chemical conversion film in concentrated nitric acid.
- ICP emission spectral analysis after dissolving the chemical conversion film in concentrated nitric acid.
- phosphate iron conversion film, zinc phosphate conversion film, manganese phosphate conversion film, etc. it is possible to dissolve only the conversion film with chromic acid and calculate from the difference in weight per unit area before and after dissolution. it can.
- it can measure by analyzing the metal material which has a chemical conversion film by a fluorescent X ray method.
- the coated metal material can be manufactured by the method of manufacturing the coated metal material.
- the coating film formed on the coated metal material may be a single layer or multiple layers.
- the paint, coating method, drying method and the like of each layer may be the same or different.
- the thickness of the coating is not limited, but is usually 5 ⁇ m or more and 100 ⁇ m or less.
- coating is performed so as to have a thickness of about 10 to 30 ⁇ m, but it may be 100 ⁇ m or more or 5 ⁇ m or less.
- the chemical conversion treatment agent to be brought into contact with the surface of the metal material in the zirconium chemical conversion treatment step is not particularly limited as long as it is a known chemical conversion treatment agent containing zirconium, but the following embodiments of the present invention You may use the chemical conversion treatment agent which concerns.
- the chemical conversion treatment agent which concerns on embodiment of this invention mix
- the chemical conversion treatment agent according to the embodiment of the present invention is brought into contact with the surface or the surface of the metal material which has not been subjected to the above pretreatment process, and a zirconium chemical conversion treatment step is performed to manufacture a metal material having a chemical conversion film.
- the metal material not subjected to the pretreatment step may be one that has been subjected to the above-described degreasing step or one that has been subjected to water washing after the degreasing step.
- the zirconium alkoxide (a) is a substance having a structure in which zirconium and an oxygen atom of an alkoxy group are bonded.
- the structure may have two or more types of metal elements in one molecule, and in this case, the two or more types of metal elements are metal elements different from zirconium.
- the hydrocarbon group of the alkoxy group is preferably a hydrocarbon group having 1 to 10 carbon atoms, and more preferably a hydrocarbon group having 2 to 8 carbon atoms.
- the zirconium alkoxide is not particularly limited as long as it is a substance having a structure in which zirconium and an oxygen atom of an alkoxy group are bonded, and examples thereof include zirconium tetrapropoxide, zirconium tetraisopropoxide, zirconium tetranormal propoxide, Examples thereof include zirconium tetranormal butoxide, zirconium butoxide, zirconium-tert-butoxide, and zirconium ethoxide.
- the chemical conversion treatment agent according to the embodiment of the present invention may be blended with one kind, but two or more kinds may be blended.
- the zirconium alkoxide (a) in the chemical conversion treatment agent may be in the form as it is, or may be in the form of a hydrolyzate obtained by hydrolysis of the zirconium alkoxide (a), or the hydrolyzate is condensation-polymerized. It may be in the form of a condensation-polymerized product, or a plurality of forms may be mixed.
- the source (b) of the ion containing zirconium is not particularly limited as long as it can supply the ion containing zirconium when it is mixed in the chemical conversion treatment agent, but, for example, zirconium sulfate, zirconium oxysulfate, Examples thereof include zirconium ammonium sulfate, zirconium oxynitrate, ammonium zirconium nitrate, hexafluorozirconate, and hexafluorozirconium complex salts. One of these components may be blended, but two or more may be blended.
- the ion containing zirconium in the chemical conversion treatment agent may be a zirconium ion, may be a complex ion containing zirconium, or may be an oxide ion of zirconium.
- the blending amount of the zirconium-containing ion source (b) in the chemical conversion treatment agent of the present embodiment is usually 0.1 mmol / L or more, preferably 0.3 mmol / L or more, in terms of zirconium equivalent molar concentration in the chemical conversion treatment agent.
- the upper limit is not particularly limited, it is usually 100 mmol / L or less.
- the pH of the chemical conversion treatment agent of the present embodiment is usually in the range of 1.5 to 6.5, but preferably in the range of 2.5 to 5.0.
- the pH value of the chemical conversion treatment agent is a value obtained by measuring the pH of the treatment agent at 40 ° C. with a commercially available pH meter.
- alkali components such as aqueous sodium hydroxide solution, aqueous potassium hydroxide solution, aqueous ammonia solution etc.
- formic acid methanesulfonic acid, ethane
- an acid component such as sulfonic acid, hydroxymethanesulfonic acid, hydroxyethanesulfonic acid can be used, it is not limited thereto.
- the chemical conversion treatment agent of the present embodiment further contains one or more sources (c) of fluorine-containing ions.
- the source (c) of the fluorine-containing ion is not particularly limited, and examples thereof include: hydrofluoric acid, ammonium fluoride, ammonium hydrogen fluoride, potassium fluoride, potassium hydrogen fluoride, iron fluoride, Sodium fluoride, sodium hydrogen fluoride, hexafluorozirconic acid, hexafluorozirconium complex salt, hexafluorotitanic acid, hexafluorotitanium complex salt, hexafluorohafnium acid, hexafluorohafnium complex salt, etc.
- the compounding quantity of fluorine is 4 times mole or more with respect to the zirconium conversion molar concentration of the supply source (b) of the ion containing zirconium.
- the source (b) of the ion containing zirconium and the source (c) of the ion containing fluorine may be the same or different.
- the ratio [aM of the above zirconium alkoxide (a) in terms of zirconium (a M ) to the concentration of zircon in terms of the supply source (b) of ions containing zirconium (b M ) [a M / b M ] is preferably in the range of 0.01 or more and 10 or less. The range is more preferably 0.03 or more and 5 or less, and still more preferably 0.05 or more and 1 or less.
- the chemical conversion treatment agent according to the embodiment of the present invention preferably further contains one or more kinds of an organosilane compound (d) having an alkoxysilyl group (hereinafter also referred to as an organosilane compound (d)).
- the organic silane compound (d) in the chemical conversion treatment agent may be in the form as it is, or in the form of a hydrolyzate obtained by hydrolysis of the organic silane compound (d), or the hydrolyzate.
- organosilane compound (d) may be in the form of alternating copolymer, random copolymer, block copolymer, graft copolymer, etc., or a plurality of forms may be mixed.
- organosilane compound (d) although the same ones as the organosilane compound (C) can be mentioned, it has an alkoxysilyl group and an amino group in the molecule from the viewpoint of coating film adhesion and corrosion resistance. It is preferable to use an organic silane compound having a glycidyl group.
- the ratio [d M] of the silicon equivalent molar concentration (d M ) of the organosilane compound (d) to the zirconium equivalent molar concentration (a M ) of the zirconium alkoxide (a) / A M ] is preferably in the range of 0.1 to 10.0, and more preferably in the range of 0.2 to 5.0.
- the chemical conversion treatment agent according to an embodiment of the present invention may further include a source (e) of ions containing at least one metal element selected from aluminum, magnesium and zinc.
- the form of the ion containing the metal element may be any form such as a metal ion or a complex ion of a metal.
- the supply source (e) is not particularly limited, and, for example, aluminum nitrate, aluminum sulfate, aluminum fluoride, aluminum oxide, magnesium nitrate, magnesium sulfate, magnesium fluoride, zinc oxide, zinc nitrate, zinc sulfate And zinc chloride and the like, and these may be blended alone, or two or more may be blended.
- the said supply source (e) may be intentionally mix
- concentration in case a supply source (e) is contained it is preferable that it is 50 mmol / L or less by metal conversion molar concentration in a chemical conversion treatment agent.
- concentration of the source (e) is not particularly limited, but is usually 0.1 mmol / L or more.
- the chemical conversion treatment agent according to an embodiment of the present invention preferably further contains at least one type of source (f) selected from sources of nitrate ion and sources of sulfate ion.
- the compounding amount of the supply source (f) is preferably in the range of 10 mmol / L to 2000 mmol / L in the chemical conversion treatment agent in molar concentration.
- the source of nitrate ion and the source of sulfate ion are not particularly limited as long as they can supply these ions when mixed with the chemical conversion treatment agent.
- nitric acid, nitrate, sulfuric acid, sulfate Any known one can be used as appropriate.
- the salt include metal salts, ammonium salts and the like.
- the source (b) of the ion containing zirconium and the source (f) may be the same or different.
- the supply source (e) and the supply source (f) may be the same or different.
- the chemical conversion treatment agent according to the embodiment of the present invention may further contain other components other than the above (a) to (f).
- the other components are not particularly limited, and examples thereof include sources of ions including metal elements other than the metal elements contained in the source (e) listed above, additives such as resins, and additives other than zirconium.
- the metal alkoxide etc. which contain a metal element can be mentioned.
- metal elements other than the metal elements contained in the source (e) listed above may include, for example, iron, cobalt, nickel, manganese, trivalent chromium, tin and tungsten, but are not limited thereto. It is not a thing.
- N-containing basic compounds examples include N-containing basic compounds and other resins, but are not limited thereto.
- the N-containing basic compound is not particularly limited as long as it is a basic compound containing an N atom in the molecule, but, for example, ammonia; hydrazine compound; hydroxylamine; monobutylamine, dibutylamine, tributylamine, Aliphatic amines such as monoethylamine, diethylamine, triethylamine, monomethylamine, dimethylamine, trimethylamine, propylamine, isopropylamine, hexylamine, 2-ethylhexylamine, ethylenediamine, diethylenetriamine, octylamine, naphthylamine and polyallylamine; monoethanolamine Diethanolamine, triethanolamine, methylethanolamine, dimethylethanolamine, diethylethanolamine, monoisopropanolamine Amine having an alicyclic and / or aromatic ring; diisopropan
- resins are not particularly limited, but for example, PVA derivatives such as polyvinyl alcohol, carboxy modified PVA, hydroxy modified PVA, silanol modified PVA, polyethylene glycol, polyacrylic acid, acrylic resin, epoxy resin, phenol resin And urethane resins, polyol resins, ester resins, polyimide resins, vinyl sulfonic acid resins and the like.
- PVA derivatives such as polyvinyl alcohol, carboxy modified PVA, hydroxy modified PVA, silanol modified PVA, polyethylene glycol, polyacrylic acid, acrylic resin, epoxy resin, phenol resin And urethane resins, polyol resins, ester resins, polyimide resins, vinyl sulfonic acid resins and the like.
- metal alkoxide containing a metal element other than zirconium examples include, but are not limited to, titanium alkoxide, vanadium alkoxide, aluminum alkoxide and the like.
- the chemical conversion treatment agent according to the embodiment of the present invention comprises a zirconium alkoxide (a), a supply source (b) of ions containing zirconium, and other components as necessary, in an aqueous solvent, and a pH adjuster Can be prepared by appropriately blending so that the pH is 1.5 or more and 6.5 or less.
- the aqueous solvent is not particularly limited as long as it contains 50% by mass or more of water based on the mass of the entire solvent.
- solvents other than water contained in the aqueous solvent include alkane solvents such as hexane and pentane; aromatic solvents such as benzene and toluene; methanol, ethanol, propanol, isopropanol, 1-butanol, isobutanol, 2- Alcohol solvents such as methyl 2-propanol and ethyl cellosolve; ether solvents such as tetrahydrofuran and dioxane; ester solvents such as ethyl acetate and butoxyethyl acetate; amide solvents such as dimethylformamide and N-methylpyrrolidone; dimethyl sulfoxide Sulfoxide solvents such as: phosphoric acid amide solvents such as hexamethyl phosphoric acid triamide; etc.
- These solvents other than water may be used alone or in combination of two or more.
- these solvents other than water may be intentionally added, or may be generated by hydrolysis of the zirconium alkoxide (a). From the environmental and economic viewpoints, it is preferable to use only water.
- Chemical conversion treatment step by chemical conversion treatment agent is a step of bringing the chemical conversion treatment agent into contact with the surface or the surface of the metal material.
- a metal material having a chemical conversion film can be manufactured.
- Examples of the method of contacting the chemical conversion treatment agent include known contact methods such as immersion treatment method, spray treatment method, pouring treatment method, and treatment methods such as combination thereof, but are not limited thereto. .
- the contact temperature is preferably in the range of 20 ° C. to 60 ° C., and more preferably in the range of 35 ° C. to 45 ° C.
- the contact time may be appropriately adjusted according to the concentration of the chemical conversion treatment agent, and is usually in the range of 30 seconds to 600 seconds, and preferably in the range of 90 seconds to 180 seconds.
- Mass of the chemical conversion coating formed by chemical conversion treatment agent according to the embodiment of the present invention per unit area of the metal material surface, in a range of 5 mg / m 2 or more 500 mg / m 2 or less in terms of zirconium by weight preferably More preferably, it is in the range of 10 mg / m 2 or more and 200 mg / m 2 or less, but it is not limited to this range.
- the chemical conversion film obtained by this embodiment is an amorphous containing zirconium. Further, the zirconium conversion mass can be measured by ICP emission spectral analysis after dissolving the chemical conversion film in concentrated nitric acid as described above.
- Example I [Preparation of painted metal materials] ⁇ Metal material> As a metal material, cold-rolled mild steel plate (SPCC: thickness 0.8 mm) specified in JIS G3141: 2011, hot-dip galvanized steel plate (SGCC: thickness 0.8 mm) specified in JIS G3302: 2012, JIS G3302: Alloyed galvanized steel sheet (SCGA: thickness 0.8 mm) specified in 2012, electrogalvanized steel sheet (SECC: thickness 0.8 mm) specified in JIS G3313: 2010, JIS G3131: 2011 Specified hot-rolled mild steel sheet (SPHC: thickness 1.8 mm), aluminum alloy sheet specified in JIS H4000: 2014 (A6061: thickness 0.8 mm), and general structure specified in JIS G3101: 2015 70mm long ⁇ 150mm wide for each rolled steel (SS400: 2.3mm thick) It was used as the cut size. In the evaluation of the coated metal material described later, the surface on which the burrs generated at the edge portion of the metal material are regarded as the evaluation
- each component is added to water so as to have a predetermined molar concentration, and then adjusted to a predetermined pH using an aqueous solution of methanesulfonic acid or sodium hydroxide to obtain Examples 1 to 71 and Comparative Example
- One to two pretreatment agents were prepared.
- the following components were used as the metal alkoxide (A), the sulfonic acid component (B) and the organic silane compound (C).
- the following were used for the mixing
- A1 Zirconium tetranorm propoxide (Matsumoto Fine Chemical Co., Ltd., Orgatics ZA-45)
- A2 Zirconium tetra-normal butoxide (Matsumoto Fine Chemical Co., Ltd., Orgatics ZA-65)
- A3 Zirconium tetraisopropoxide (Wako Pure Chemical Industries, Ltd.)
- A4 Titanium tetraisopropoxide (Matsumoto Fine Chemical Co., Ltd., Organix TA-8)
- A5 Titanium tetra-normal butoxide (Matsumoto Fine Chemical Co., Ltd., Orgatics TA-21)
- A6 Vanadium oxyisopropoxide (Nichia Chemical Industry Co., Ltd., VIP)
- A7 Aluminum tri-secondary butoxide (Matsumoto Fine Chemical Co., Ltd., AL-3001)
- B1 Methanesulfonic acid (Tokyo Chemical Industry Co., Ltd., methane
- the various metal materials subjected to the above degreasing treatment are subjected to the following pretreatment, various chemical conversion treatments, electrodeposition coating treatment, etc. as shown in Table 2-1 and Table 2-2 to produce various coated metal materials. did. The details are shown below.
- ⁇ Pretreatment for metal materials> The various metal materials subjected to the above degreasing treatment were subjected to pretreatment by being immersed in various pretreatment agents shown in Table 1 (the pretreatment agents of Examples 1 to 71 and Comparative Examples 1 and 2) at 25 ° C. for 30 seconds. .
- a chemical conversion treatment agent As a chemical conversion treatment agent, a general zirconium chemical conversion treatment agent, a titanium chemical conversion treatment agent, a hafnium chemical conversion treatment agent, a vanadium chemical conversion treatment agent, an iron phosphate chemical conversion treatment agent, and a zinc phosphate chemical conversion treatment agent were used.
- ⁇ Zirconium chemical conversion treatment Zr>
- the various metal materials subjected to pretreatment or the various metal materials subjected only to degreasing treatment are immersed in a 50 g / L aqueous solution of zirconium chemical conversion solution (Palseed 1500, manufactured by Nippon Parkerizing Co., Ltd.) for 120 seconds at 40 ° C.
- the metal material in which the chemical conversion film was formed was produced.
- Ti> A conversion treatment agent prepared by preparing SPCC pretreated with the pretreatment agent of Example 11 or SPCC subjected only to degreasing treatment, so that hexafluorotitanic acid has a titanium equivalent mass concentration of 0.1 g / kg. Then, the substrate was immersed at 40 ° C. for 120 seconds to prepare a metal material having a titanium conversion film.
- Hf> A chemical conversion treatment agent prepared by preparing the SPCC pretreated with the pretreatment agent of Example 11 or the SPCC subjected only to the degreasing treatment into a concentration of 0.1 g / kg of hexafluorohafnic acid in terms of hafnium equivalent mass concentration. Then, it was immersed at 40 ° C. for 120 seconds to prepare a metal material having a hafnium conversion film.
- Example 11 SPCC treated with the pretreatment agent of Example 11 or SPCC treated only with degreasing treatment with iron phosphate treatment solution [50 g / L of iron phosphate treatment solution (Palphos 1077; Nippon Parkerizing Co., Ltd. C. for 120 seconds at 50.degree. C. to produce a metal material having an iron phosphate conversion film.
- ⁇ Zinc phosphate conversion treatment P-Zn> Surface conditioning treatment solution [3 g / L surface conditioning treatment solution (Preparen X; manufactured by Nippon Parkerizing Co., Ltd.)] SPCC treated with the pretreatment agent of Example 11 or SPCC treated only with degreasing treatment In zinc phosphate for 30 seconds, and then in zinc phosphate conversion treatment solution [50 g / L of zinc phosphate conversion treatment solution (PALBOND SX 35; Nippon Parkerizing Co., Ltd.)] at 35 ° C. for 120 seconds, and zinc phosphate A metal material having a chemical conversion film was produced.
- Preparen X manufactured by Nippon Parkerizing Co., Ltd.
- a metal material having a chemical conversion film subjected to various chemical conversion treatments is washed with pure water, and then the various metal materials are used as a cathode, and a constant voltage cathode for 180 seconds using a cationic electrodeposition paint (GT-100, manufactured by Kansai Paint Co., Ltd.) It electrolyzed and the coating-film component was deposited on the whole surface of the metallic material. Thereafter, the plate is rinsed with pure water and baked at 170 ° C. (PMT: maximum temperature of the metal material at the time of baking) for 20 minutes to obtain a coated metal material No. 1 1 to 81 and No. 1 84 to 94 were produced and the following evaluation was performed.
- GT-100 cationic electrodeposition paint
- the metal material which has been subjected to only the pre-treatment is coated in the same manner as described above, and a coated metal material No. 1 is coated. 82 and No. 83 were produced and the following evaluation was performed. In addition, it adjusted so that the coating-film thickness of coating metal material might be set to 20 micrometers.
- ⁇ Solvent coating treatment for metal materials having a chemical conversion film The various metal materials subjected to the zirconium chemical conversion treatment were washed with water, drained and dried at 100 ° C. for 20 minutes, and coated with an air spray using a solvent paint (MF coat 300, manufactured by Kansai Paint Co., Ltd.). Thereafter, the coated metal material No. 1 is baked at 80 ° C. (PMT) for 20 minutes. 95 to 99 were made. The coating film thickness was adjusted to 60 ⁇ m.
- MF coat 300 manufactured by Kansai Paint Co., Ltd.
- ⁇ Powder coating treatment for metal materials having a chemical conversion film> After washing various metal materials that have undergone zirconium chemical conversion treatment, they are drained and dried at 100 ° C. for 20 minutes, and an electrostatic powder coating machine (Nippon Parkerizing Co., Ltd.) using a powder coating (Eva clad 2400, Kansai Paint Co., Ltd.) Co., Ltd.). Thereafter, the coated metal material No. 1 is baked at 160 ° C. (PMT) for 20 minutes. 100 to 104 were made. The coating film thickness was adjusted to 60 ⁇ m.
- B: The maximum blister width is 4.0 mm or more and less than 8.0 mm.
- evaluation criteria B and C did not have exfoliation with rim chip.
- evaluation criteria S The number of coating films not peeled off is 100 (no edge chipping).
- A The number of coating films not peeled off is 100 (with missing edges).
- B The number of coating films not peeled off is 90 to 99 (no edge chipping).
- C The number of coatings not peeled off is less than 90 (no chipping).
- Electrodeposition coating is applied according to a method for testing the conductivity with electrodeposition coating using a four-sheet box (see, for example, paragraphs 0085 to 0090 of JP-A-2010-90409) using four metal materials having various chemical conversion coatings. A flexibility test was performed.
- a 70 ⁇ 150 ⁇ 0.5 mm stainless steel plate (SUS 304) in which one side (the opposite side of the side facing the four-sheet box) was sealed with an insulating tape was used as the counter electrode.
- the liquid level of the electrodeposition paint was adjusted so that the evaluation surface of the metal material having the chemical conversion film and the current-carrying surface of the counter electrode of the four-sheet box were immersed.
- the temperature of the electrodeposition paint was maintained at 30 ° C., and the electrodeposition paint was stirred by a stirrer.
- the coating film was electrolytically deposited on the surface of the four box metal material having a conversion film by the cathodic electrolysis method using the counter electrode as the anode.
- Specific electrolytic conditions were cathodic electrolysis for 180 seconds at a predetermined voltage using a rectifier. The voltage was adjusted so that the coating thickness of the surface of the metal material having a chemical conversion film closest to the counter electrode of the four sheets and facing the counter electrode was 15 ⁇ m.
- each of the coated metal materials was washed with water, and was then baked for 20 minutes under the condition of a PMT of 170 ° C. for baking to form a coated film, thereby producing a coated metal material.
- the thickness of the coating film formed on the counter electrode surface side of the metal material having the chemical conversion film most distant from the counter electrode was measured using an electromagnetic film thickness meter.
- the measurement of the thickness of the coating film was obtained by measuring the film thickness at 10 places randomly selected in the coated metal material and calculating the average value thereof.
- the electrodeposition paint-wrapping property has the thickness of the coating film (T 1 ) formed on the counter electrode side of the metal material having a conversion film closest to the counter electrode and the chemical conversion film most distant from the counter electrode.
- the ratio (T 2 / T 1 ) to the thickness (T 2 ) of the coating film formed on the opposite side of the metal material was calculated as a percentage. These percentages were evaluated on the throwing power of the electrodeposition coating based on the following evaluation criteria. The results are shown in Table 3-1 and Table 3-2. (Evaluation criteria) A: The electrodeposition resistance is 65% or more. (Most excellent) B: The electrodeposition resistance is 50% or more and less than 65%.
- C Electrodeposition resistance is less than
- each component is added to water so as to have a predetermined molar concentration, and then the pH is adjusted to 4.0 using methanesulfonic acid or sodium hydroxide aqueous solution.
- the conversion treatment agents of Examples II-1 to II-82 were prepared.
- at least one metal element selected from zirconium alkoxide (a), a source of ions containing zirconium (b), organic silane compound (d), aluminum, magnesium and zinc were used as a source (e) of the contained ion, and other components (g).
- the compounding amount of “fluorine” in Tables 4-1 and 4-2 indicates the molar concentration of fluorine derived from hydrofluoric acid (Morita Chemical Industry Co., Ltd.). Also, when hexafluorozirconic acid is used as the supply source (b), the value also includes the molar concentration of fluorine derived from hexafluorozirconate. Moreover, the compounding quantity of "nitrate ion" or "sulfate ion” in a table
- surface shows the molar concentration of the nitrate ion or sulfate ion in nitric acid (Wako Pure Chemical Industries Ltd.) or sulfuric acid (Wako Pure Chemical Industries Ltd.).
- a nitrate ion or a sulfate ion is contained in a supply source (e)
- the value including those nitrate ion or a sulfate ion is shown.
- the compounding quantity was shown by the pure part conversion mass concentration (ppm) of each component.
- the following chemical conversion treatment and coating treatment were performed on the various metal materials subjected to the above-mentioned degreasing treatment to produce various coated metal materials.
- ⁇ Chemical conversion treatment> The chemical conversion treatment was performed by immersing various metal materials subjected to the degreasing treatment in a chemical conversion treatment agent (Examples II-1 to II-82) at 40 ° C. for 2 minutes.
- various metal materials subjected to the degreasing treatment are pretreated by immersing them in the pretreatment agent of Example 3, 11, 59 or 69 at 25 ° C. for 30 seconds, and then a chemical conversion treatment agent (Example II-4, The chemical conversion treatment was performed by immersing in (-6) or -59) at 40 ° C. for 2 minutes.
- Electrodeposition coating> After washing the various metal materials subjected to the chemical conversion treatment with water, the various metal materials are used as a cathode, and an electrodeposition coating process is carried out as described above using an electrodeposition paint (GT-100, manufactured by Kansai Paint Co., Ltd.) Various painted metal materials were produced. The coating film thickness was adjusted to 20 ⁇ m.
- evaluation criteria C or more were made into the practicable range.
- S Maximum peeling width is less than 1.0 mm A: Maximum peeling width is 1.0 mm or more and less than 2.0 mm B: Maximum peeling width is 2.0 mm or more and less than 4.0 mm C: Maximum peeling width is 4.0 mm or more 6. Less than 0 mm D: Maximum peeling width is 6.0 mm or more
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Abstract
Description
(I)金属材料の表面又は表面上に化成皮膜を形成させる化成処理の前処理に用いられる前処理剤であって、
ジルコニウム、チタン、バナジウム、及びアルミニウムから選択される少なくとも1種の金属元素を含む金属アルコキシド(A)と、
メタンスルホン酸、エタンスルホン酸、ヒドロキシメタンスルホン酸、及びヒドロキシエタンスルホン酸から選択される少なくとも1種のスルホン酸(B)と、
を配合した前処理剤。
(II)アルコキシシリル基を有する有機シラン化合物(C)を少なくとも1種配合した、上記(I)に記載の前処理剤。
(III)上記(I)又は(II)に記載の前処理剤を金属材料の表面又は表面上に接触させる前処理工程を含む、金属材料の製造方法。
(IV)前記前処理工程後に、金属材料の表面上に化成皮膜を形成する化成処理工程を更に含む、上記(III)に記載の金属材料の製造方法。
(V)上記(IV)に記載の製造方法により得られた化成皮膜を有する金属材料。
(VI)上記(IV)に記載の化成処理工程後に、金属材料に塗装を行う塗装工程を更に含む塗装金属材料の製造方法。
(VII)上記(V)に記載の化成皮膜を有する金属材料の表面上に塗膜を有する塗装金属材料。
(VIII)ジルコニウムアルコキシド(a)と、
ジルコニウムを含むイオンの供給源(b)と、を配合し、pHが1.5以上6.5以下である化成処理剤。
(IX) 更に、フッ素を含むイオンの供給源(c)を配合した、(VIII)に記載の化成処理剤。
(X) ジルコニウムアルコキシド(a)のジルコニウム換算モル濃度(aM)と、ジルコニウムを含むイオンの供給源(b)のジルコニウム換算モル濃度(bM)との比[aM/bM]が0.01以上10以下である、(VIII)又は(IX)に記載の化成処理剤。
(XI) 更に、アルコキシシリル基を有する有機シラン化合物(d)を配合した、(VIII)~(X)のいずれかに記載の化成処理剤。
(XII) 更に、硝酸イオン及び硫酸イオンから選択される少なくとも1種のイオンの供給源(f)を配合した、(VIII)~(XI)のいずれかに記載の化成処理剤。
(XIII) (VIII)~(XII)のいずれかに記載の化成処理剤を金属材料の表面又は表面上に接触させる化成処理工程を含む、化成皮膜を有する金属材料の製造方法。
(XIV) 前記化成処理工程の前に、(I)又は(II)に記載の前処理剤を金属材料の表面又は表面上に接触させる前処理工程を含む、(XIII)に記載の製造方法。
(XV) (XIII)又は(XIV)に記載の製造方法によって形成された化成皮膜を有する金属材料。
(XVI) (XIII)又は(XIV)に記載の化成処理工程後に、金属材料に塗装を行う塗装工程を更に含む、塗装金属材料の製造方法。
(XVII) (XV)に記載の化成皮膜を有する金属材料の表面上に塗膜を有する塗装金属材料。
また、該前処理方法を適用した金属材料の製造方法に有用で、かつ、金属材料の種類によらず優れた耐食性をもたらすことができる、化成処理剤、その化成処理剤を用いた金属表面処理方法等の技術を提供することもできる。
以下、本実施形態に係る前処理剤、その製造方法、前処理剤による金属材料の前処理方法、前処理後の化成処理方法、化成処理方法によって形成させた化成皮膜を有する金属材料、化成処理方法に用いられる化成処理剤等を説明する。なお、本発明は、その要旨を含む範囲で任意に変更可能であり、下記の実施形態のみに限定されない。
本実施形態に係る前処理剤は、液体媒体に、ジルコニウム、チタン、バナジウム、及びアルミニウムから選択される少なくとも1種の金属元素を含む金属アルコキシド(A)と、メタンスルホン酸、エタンスルホン酸、ヒドロキシメタンスルホン酸、及びヒドロキシエタンスルホン酸から選択される少なくとも1種のスルホン酸(B)と、を配合したものであってもよいが、他の成分をさらに配合したものであってもよい。他の成分としては、例えば、アルコキシシリル基を有する有機シラン化合物(C)、pH調整剤、被処理物の濡れ性を調整する界面活性剤、消泡剤と称される界面活性剤などの添加剤を挙げることができる。
前処理剤の製造方法としては、特に制限されるものではないが、例えば金属アルコキシド(A)、スルホン酸成分(B)、必要に応じ有機シラン化合物(C)を適宜混合し、液体媒体に添加することで製造可能である。液体媒体としては、特に限定されるものではないが、水(脱イオン水、蒸留水)が好ましいが、低級アルコール等の水混和性有機溶媒が50重量%未満でさらに含まれていてもよい。
本発明の別の実施形態は、上述した前処理剤を金属材料の表面又は表面上に接触させる前処理方法にも関する。
前処理方法は、金属材料の表面又は表面上に、本実施形態に係る前処理剤を接触させる前処理工程を含む。なお、前処理方法は、前処理工程の後に水洗が含まれていてもよい。また、前処理工程の前に、脱脂と称される金属材料の表面上の油分及び付着物の除去を行う脱脂処理工程を含んでいてもよい。脱脂処理の方法は特に限定されず、公知の方法を適用することができる。脱脂処理工程の後に水洗を行ってもよいし、行わなくてもよい。
化成処理工程における化成処理剤の温度又は接触時間は、化成処理工程の種類、化成処理剤の濃度等に応じて、適宜設定できる。
また、化成処理工程を2以上組み合わせる場合、上記リン酸鉄化成処理工程又はリン酸亜鉛化成処理工程と、これらの工程によって得られた化成皮膜上に別の化成皮膜を形成する所定の化成処理工程とを含んでもよい。別の化成皮膜を形成する化成処理工程としては、例えば、ジルコニウム化成処理工程、チタン化成処理工程、ハフニウム化成処理工程、バナジウム化成処理工程等の各種化成処理工程が挙げられる。このように、1の各種化成処理工程又は2種の異なる化成処理工程を行うことにより、金属材料の耐食性を更に向上させることができる。
上記ジルコニウム化成処理工程で金属材料の表面上に接触させる化成処理剤は、ジルコニウムを含む公知の化成処理剤であれば特に制限されるものではないが、以下の本発明の実施形態に係る化成処理剤を用いてもよい。本発明の実施形態に係る化成処理剤は、ジルコニウムアルコキシド(a)と、ジルコニウムを含むイオンの供給源(b)と、を配合し、pHが1.5以上6.5以下である。なお、本発明の実施形態に係る化成処理剤を、上記前処理工程を施していない金属材料の表面又は表面上に接触させて、ジルコニウム化成処理工程を行い、化成皮膜を有する金属材料を製造してもよい。また、前処理工程を施していない金属材料は、上記脱脂処理工程が施されたものであっても、該脱脂処理工程の後に水洗を行ったものであってもよい。本発明の実施形態に係る化成処理剤により形成された化成皮膜の上に塗装を施すことにより、金属材料の種類によらず優れた耐食性をもたらすことができる。
上記アルコキシ基の炭化水素基は、炭素数が1以上10以下の炭化水素基であることが好ましく、炭素数が2以上8以下の炭化水素基であることがより好ましい。ジルコニウムアルコキシドとしては、ジルコニウムとアルコキシ基の酸素原子とが結合した構造を有する物質であれば特に制限されるものではないが、例えばジルコニウムテトラプロポキシド、ジルコニウムテトライソプロポキシド、ジルコニウムテトラノルマルプロポキシド、ジルコニウムテトラノルマルブトキシド、ジルコニウムブトキシド、ジルコニウム-tert-ブトキシド、ジルコニウムエトキシドなどが挙げられる。これらの成分のうち、本発明の実施形態に係る化成処理剤には、1種が配合されていればよいが、2種以上が配合されていてもよい。
本発明の実施形態に係る化成処理剤による化成処理工程は、該化成処理剤を金属材料の表面又は表面上に接触させる工程である。この化成処理工程により、化成皮膜を有する金属材料を製造することができる。化成処理剤の接触方法としては、公知の接触方法、例えば、浸漬処理法、スプレー処理法、流しかけ処理法、又はこれらの組み合わせ等の処理法が挙げられるが、これらに限定されるものではない。
[塗装金属材料の作製]
<金属材料>
金属材料として、JIS G3141:2011で規定された冷間圧延軟鋼板(SPCC:厚さ0.8mm)、JIS G3302:2012で規定された溶融亜鉛めっき鋼板(SGCC:厚さ0.8mm)、JIS G3302:2012で規定された合金化溶融亜鉛めっき鋼板(SCGA:厚さ0.8mm)、JIS G3313:2010で規定された電気亜鉛めっき鋼板(SECC:厚さ0.8mm)、JIS G3131:2011で規定された熱間圧延軟鋼板(SPHC:厚さ1.8mm)、JIS H4000:2014で規定されたアルミニウム合金板(A6061:厚さ0.8mm)、およびJIS G3101:2015で規定された一般構造用圧延鋼材(SS400:厚さ2.3mm)のそれぞれを縦70mm×横150mmのサイズに切断したものを用いた。後述の塗装金属材料の評価では、金属材料のエッジ部に生じたバリが存在する面を、評価面とした。このとき生じたバリの高さは凡そ100μmであった。
各種金属材料を、アルカリ脱脂剤[商品名:ファインクリーナーE2093(日本パーカライジング株式会社製)の、A剤を13g/L、B剤を11g/Lとそれぞれなるように水に混合した水溶液]に、45℃で2分間浸漬し、金属材料の表面上における油分や汚れを取り除いた。その後、金属材料の表面を水洗した。
表1に示すとおり、各成分を所定モル濃度となるように水に添加した後、メタンスルホン酸又は水酸化ナトリウム水溶液を用いて所定のpHに調整することにより、実施例1~71及び比較例1~2の前処理剤を調製した。
なお、前処理剤の調製には、金属アルコキシド(A)、スルホン酸成分(B)及び有機シラン化合物(C)として、下記の成分を用いた。また、混入成分は以下のものを用いた。
A1:ジルコニウムテトラノルマルプロポキシド(マツモトファインケミカル株式会社、オルガチックスZA-45)
A2:ジルコニウムテトラノルマルブトキシド(マツモトファインケミカル株式会社、オルガチックスZA-65)
A3:ジルコニウムテトライソプロポキシド(和光純薬工業株式会社)
A4:チタンテトライソプロポキシド(マツモトファインケミカル株式会社、オルガチックスTA-8)
A5:チタンテトラノルマルブトキシド(マツモトファインケミカル株式会社、オルガチックスTA-21)
A6:バナジウムオキシイソプロポキシド(日亜化学工業株式会社、VIP)
A7:アルミニウムトリセカンダリーブトキシド(マツモトファインケミカル株式会社、AL-3001)
B1:メタンスルホン酸(東京化成工業株式会社、メタンスルホン酸)
B2:エタンスルホン酸(東京化成工業株式会社、エタンスルホン酸)
B3:ヒドロキシメタンスルホン酸(東京化成工業株式会社、ヒドロキシメタンスルホン酸)
C1:N-2-(アミノエチル)-3-アミノプロピルトリメトキシシラン(信越化学工業株式会社、KBM-603)
C2:N-2-(アミノエチル)-3-アミノプロピルメチルジメトキシシラン(信越化学工業株式会社、KBM-602)
C3:3-アミノプロピルトリメトキシシラン(信越化学工業株式会社、KBM-903)
C4:3-アミノプロピルトリエトキシシラン(信越化学工業株式会社、KBE-903)
C5:3-グリシドキシプロピルトリエトキシシラン(信越化学工業株式会社、KBE-403)
C6:3-グリシドキシプロピルトリメトキシシラン(信越化学工業株式会社、KBM-403)
C7:3-グリシドキシプロピルメチルジメトキシシラン(信越化学工業株式会社、KBM-402)
C8:テトラエトキシシラン(信越化学工業株式会社、KBE-04)
C9:フェニルトリエトキシシラン(信越化学工業株式会社、KBE-103)
混入成分のFe:硝酸鉄九水和物(純正化学株式会社製、試薬、規格1級、鉄の酸化数は3)
混入成分のAl:硝酸アルミニウム九水和物(純正化学株式会社製、試薬、規格1級)
混入成分のZn:硝酸亜鉛六水和物(純正化学株式会社製、試薬、規格1級)
<金属材料に対する前処理>
上記脱脂処理を施した各種金属材料を、表1に示す各種前処理剤(実施例1~71及び比較例1~2の前処理剤)に25℃で30秒間浸漬させて前処理を行った。
化成処理剤としては、一般的なジルコニウム化成処理剤、チタン化成処理剤、ハフニウム化成処理剤、バナジウム化成処理剤、リン酸鉄化成処理剤、リン酸亜鉛化成処理剤を用いた。
前処理を行った各種金属材料または脱脂処理のみを行った各種金属材料を、ジルコニウム化成処理液(パルシード1500、日本パーカライジング株式会社製)の50g/L水溶液に40℃で120秒間浸漬して、ジルコニウム化成皮膜が形成された金属材料を作製した。
実施例11の前処理剤を用いて前処理を行ったSPCCまたは脱脂処理のみを行ったSPCCを、ヘキサフルオロチタン酸がチタン換算質量濃度で0.1g/kgとなるように調製した化成処理剤に、40℃で120秒間浸漬し、チタン化成皮膜を有する金属材料を作製した。
実施例11の前処理剤を用いて前処理を行ったSPCCまたは脱脂処理のみを行ったSPCCを、ヘキサフルオロハフニウム酸がハフニウム換算質量濃度で0.1g/kgとなるように調製した化成処理剤に、40℃で120秒間浸漬し、ハフニウム化成皮膜を有する金属材料を作製した。
実施例11の前処理剤を用いて前処理を行ったSPCCまたは脱脂処理のみを行ったSPCCを、メタバナジン酸アンモニウムがバナジウム換算質量濃度で0.1g/kgとなるように調製した化成処理剤に、40℃で120秒間浸漬し、バナジウム化成皮膜を有する金属材料を作製した。
実施例11の前処理剤を用いて前処理を行ったSPCCまたは脱脂処理のみを行ったSPCCに、リン酸鉄化成処理液[50g/Lのリン酸鉄化成処理液(パルフォス1077;日本パーカライジング株式会社製)]を50℃で120秒間スプレーし、リン酸鉄化成皮膜を有する金属材料を作製した。
実施例11の前処理剤を用いて前処理を行ったSPCCまたは脱脂処理のみを行ったSPCCを、表面調整処理液[3g/Lの表面調整処理液(プレパレンX;日本パーカライジング株式会社製)]に25℃で30秒間浸漬した後、リン酸亜鉛化成処理液[50g/Lのリン酸亜鉛化成処理液(パルボンドSX35;日本パーカライジング株式会社製)]に35℃で120秒間浸漬し、リン酸亜鉛化成皮膜を有する金属材料を作製した。
各種化成処理を行った化成皮膜を有する金属材料を純水で水洗した後、各種金属材料を陰極とし、カチオン電着塗料(GT-100、関西ペイント社製)を用いて、180秒間定電圧陰極電解して金属材料の全表面に塗膜成分を析出させた。その後、純水で水洗し、170℃(PMT:焼付け時の金属材料の最高温度)で20分間焼き付けて塗装金属材料No.1~81及びNo.84~94を作製し、以下の評価を実施した。また、前処理のみを行った金属材料に上記と同様に塗装を行って塗装金属材料No.82及びNo.83を作製し、以下の評価を実施した。なお、塗装金属材料の塗膜厚は20μmとなるように調整した。
ジルコニウム化成処理を行った各種金属材料を水洗した後、100℃で20分間水切り乾燥し、溶剤塗料(MFコート300、関西ペイント株式会社製)を用いて、エアスプレーにて塗装した。その後、80℃(PMT)で20分間焼き付けて塗装金属材料No.95~99を作製した。なお、塗膜厚は60μmとなるように調整した。
ジルコニウム化成処理を行った各種金属材料を水洗した後、100℃で20分間水切り乾燥し、粉体塗料(エバクラッド2400、関西ペイント株式会社製)を用いて、静電粉体塗装機(日本パーカライジング(株)製)にて塗装した。その後、160℃(PMT)で20分間焼き付けて塗装金属材料No.100~104を作製した。なお、塗膜厚は60μmとなるように調整した。
<耐食性能>
上記準備した各塗装金属材料No.1~104のエッジのバリ部における耐食性能を確認するため、各塗装金属材料を、複合サイクル試験機に入れ、JASO-M609-91に則り複合サイクル試験を100サイクル実施した。100サイクル実施後、切断時に生じたバリからの最大膨れ幅を測定し、以下に示す評価基準に従ってエッジのバリ部耐食性を評価した。なお、エッジのバリについて評価を行うため、各種塗装金属材料のエッジ及び裏面にはテープシールを行っていない。結果を表3-1及び表3-2に示す。
(電着塗装処理を行った場合の評価基準)
S:最大膨れ幅が1.5mm未満である。(最も優れる)
A:最大膨れ幅が1.5mm以上2.5mm未満である。
B:最大膨れ幅が2.5mm以上5.0mm未満である。
C:最大膨れ幅が5.0mm以上である。
(溶剤塗装処理又は粉体塗装処理を行った場合の評価基準)
S:最大膨れ幅が2.0mm未満である。(最も優れる)
A:最大膨れ幅が2.0mm以上4.0mm未満である。
B:最大膨れ幅が4.0mm以上8.0mm未満である。
C:最大膨れ幅が8.0mm以上である。
各塗装金属材料No.1~104の塗膜密着性を確認するため、沸騰水に1時間浸漬した後、各塗装金属材料に1mm間隔で碁盤目状(10×10=100個)のカット傷を施した。続いて、表面上の水分を拭き取り、碁盤目状のカット傷に対してセロハンテープを貼り付けた後、セロハンテープを剥がし、塗装金属材料から剥離しなかった該1mm角の塗膜の数を計測し、以下に示す評価基準に従って塗膜密着性を評価した。結果を表3-1及び表3-2に示す。なお、ここで縁欠けとは、該1mm角の塗膜が、完全には剥離しないものの、一部分剥離したことを示す。また、評価基準BおよびCは、縁欠けありの剥離が存在しなかった。
(評価基準)
S:剥離しなかった塗膜数が100個(縁欠け無し)である。(もっとも優れる)
A:剥離しなかった塗膜数が100個(縁欠けあり)である。
B:剥離しなかった塗膜数が90~99個(縁欠け無し)である。
C:剥離しなかった塗膜数が90未満(縁欠け無し)である。
上記塗装金属材料No.1~73及びNo.79~89における電着塗装処理の代わりに、以下の電着塗装付き廻り性試験を実施して塗膜を形成させ、得られた塗装金属材料を用いて電着塗装付き廻り性を評価した。
各種化成皮膜を有する金属材料を4枚用いて、4枚ボックスによる電着塗装付き廻り性試験方法(例えば、特開2010-90409号公報の段落0085~0090等を参照)に従い、電着塗装付き廻り性試験を実施した。実施に際し、対極としては、片面(4枚ボックスと対向する面の逆面)を絶縁テープでシールした70×150×0.5mmのステンレス板(SUS304)を用いた。また、電着塗料の液面は、4枚ボックスの、化成皮膜を有する金属材料の評価面及び対極の通電面が浸漬する位置となるように調整した。電着塗料の温度は30℃に保持し、電着塗料をスターラーにて攪拌した。
その後、電着塗料付き廻り性は、対極に最も近い、化成皮膜を有する金属材料の対極面側に形成された塗膜の厚さ(T1)と、対極から最も離れた、化成皮膜を有する金属材料の対局面側に形成された塗膜の厚さ(T2)との比率(T2/T1)を百分率で算出した。
これらの百分率を以下の評価基準に基づいて電着塗装付き廻り性を評価した。結果を表3-1及び表3-2に示す。
(評価基準)
A:電着付き廻り性は65%以上である。(最も優れる)
B:電着付き廻り性は50%以上65%未満である。
C:電着付き廻り性は50%未満である。
[塗装金属材料の作製]
表4-1~表4-2に示すとおり、各成分を所定モル濃度となるように水に添加した後、メタンスルホン酸または水酸化ナトリウム水溶液を用いてpH4.0に調整することにより、実施例II-1~II-82の化成処理剤を調製した。
なお、化成処理剤の調製には、ジルコニウムアルコキシド(a)、ジルコニウムを含むイオンの供給源(b)、有機シラン化合物(d)、アルミニウム、マグネシウム及び亜鉛から選択される少なくとも1種の金属元素を含むイオンの供給源(e)、およびその他成分(g)として、以下のものを用いた。
a1:ジルコニウムテトラノルマルプロポキシド
a2:ジルコニウムテトラノルマルブトキシド
a3:ジルコニウムテトライソプロポキシド
b1:ヘキサフルオロジルコニウム酸(森田化学工業株式会社、ジルコンフッ化水素酸)
b2:水酸化ジルコニウム(第一稀元素化学工業株式会社、R水酸化ジルコニウム)
d1:N-2-(アミノエチル)-3-アミノプロピルトリメトキシシラン
d2:N-2-(アミノエチル)-3-アミノプロピルメチルジメトキシシラン
d3:3-アミノプロピルトリメトキシシラン
d4:3-アミノプロピルトリエトキシシラン
d5:3-グリシドキシプロピルトリエトキシシラン
d6:3-グリシドキシプロピルトリメトキシシラン
d7:3-グリシドキシプロピルメチルジメトキシシラン
d8:テトラエトキシシラン
d9:フェニルトリエトキシシラン
e1:硝酸アルミニウム九水和物(和光純薬工業株式会社)
e2:硝酸マグネシウム六水和物(和光純薬工業株式会社)
e3:酸化亜鉛(和光純薬工業株式会社)
e4:硫酸アルミニウム(和光純薬工業株式会社)
e5:硫酸マグネシウム(和光純薬工業株式会社)
g1:スーパーフレックスE620(第一工業製薬株式会社)
g2:スーパーフレックスE650(第一工業製薬株式会社)
g3:アリルアミン重合体(ニットーボーメディカル株式会社、PAA-03)
g4:アリルアミン塩酸塩・ジアリルアミン塩酸塩共重合体(ニットーボーメディカル株式会社、PAA-D11-HCL)
g5:ジアリルアミン塩酸塩重合体(ニットーボーメディカル株式会社、PAS-21CL)
g6:ジアリルアミン塩酸塩・二酸化硫黄共重合体(ニットーボーメディカル株式会社、PAS-92)
g7:メチルジアリルアミン塩酸塩重合体(ニットーボーメディカル株式会社、PAS-M-1)
g8:チタンテトライソプロポキシド(和光純薬工業株式会社)
g9:1-プロパノール(和光純薬工業株式会社)
また、表中の「硝酸イオン」又は「硫酸イオン」の配合量は、硝酸(和光純薬工業株式会社)又は硫酸(和光純薬工業株式会社)における硝酸イオン又は硫酸イオンのモル濃度を示す。また、供給源(e)に硝酸イオン又は硫酸イオンが含まれる場合には、それらの硝酸イオン又は硫酸イオンも含めた値を示す。
表中のその他成分(g)については、各成分の純分換算質量濃度(ppm)で配合量を示した。
<化成処理>
脱脂処理を施した各種金属材料を化成処理剤(実施例II-1~II-82)に40℃で2分間浸漬することで、化成処理を行った。また、脱脂処理を施した各種金属材料を実施例3、11、59又は69の前処理剤に25℃で30秒間浸漬させて前処理を行った後、化成処理剤(実施例II-4、-6又は-59)に40℃で2分間浸漬することで、化成処理を行った。
化成処理を行った各種金属材料を水洗した後、各種金属材料を陰極とし、電着塗料(GT-100、関西ペイント株式会社製)を用いて、上述のように電着塗装処理を実施し、各種塗装金属材料を作製した。なお、塗膜厚は20μmとなるように調整した。
化成処理を行った各種金属材料を水洗した後、100℃で20分間水切り乾燥し、上述のように溶剤塗装処理および粉体塗装処理を実施し、各種塗装金属材料を作製した。なお、塗膜厚は60μmとなるように調整した。
<耐食性能>
各種塗装金属材料(No.II-1~564の試験片)の耐食性能を確認するため、塗装金属材料に10cm四方の大きさで×状に金属素地に達する傷を入れ、中性塩水噴霧試験(NSS、JIS Z 2371:2015)を実施した。96時間噴霧した後、塗装金属材料を水洗及び乾燥した。続いて、24mm幅のテープを傷部に貼り付けた後、テープを剥離し、傷部から剥離した両側の最大剥離幅を測定した。その結果を、以下に示す評価基準に従って耐食性を評価した。なお、評価基準C以上を実用可能範囲とした。
(評価基準)
S:最大剥離幅が1.0mm未満
A:最大剥離幅が1.0mm以上2.0mm未満
B:最大剥離幅が2.0mm以上4.0mm未満
C:最大剥離幅が4.0mm以上6.0mm未満
D:最大剥離幅が6.0mm以上
各種塗装金属材料(No.II-1~564の試験片)の塗膜密着性を確認するため、沸騰水に1時間浸漬した後、塗装金属材料に1mm間隔(10×10=100個)で碁盤目状のカット傷を施した。続いて、表面上の水分を拭き取り、碁盤目状のカット傷に対してセロハンテープを貼り付けた後、セロハンテープを剥がし、剥離しなかった碁盤目の塗膜数を計測し、以下に示す評価基準に従って密着性を評価した。なお、評価基準B以上を実用可能範囲とした。
(評価基準)
S:塗膜数が100個
A:塗膜数が90~99個
B:塗膜数が80~89個
C:塗膜数が79個以下
Claims (17)
- 金属材料の表面又は表面上に化成皮膜を形成させる化成処理の前処理に用いられる前処理剤であって、
ジルコニウム、チタン、バナジウム、及びアルミニウムから選択される少なくとも1種の金属元素を含む金属アルコキシド(A)と、
メタンスルホン酸、エタンスルホン酸、ヒドロキシメタンスルホン酸、及びヒドロキシエタンスルホン酸から選択される少なくとも1種のスルホン酸(B)と、
を配合した前処理剤。 - アルコキシシリル基を有する有機シラン化合物(C)を少なくとも1種配合した、請求項1に記載の前処理剤。
- 請求項1又は2に記載の前処理剤を金属材料の表面又は表面上に接触させる前処理工程を含む、金属材料の製造方法。
- 前記前処理工程後に、金属材料の表面上に化成皮膜を形成する化成処理工程を更に含む、請求項3に記載の金属材料の製造方法。
- 前記化成処理工程は、ジルコニウムアルコキシド(a)と、ジルコニウムを含むイオンの供給源(b)と、を配合し、pHが1.5以上6.5以下の化成処理剤を、前記金属材料に接触する工程、を含む、請求項4に記載の金属材料の製造方法。
- 請求項4又は5に記載の製造方法により得られた化成皮膜を有する金属材料。
- 請求項4又は5に記載の化成処理工程後に、金属材料に塗装を行う塗装工程を更に含む塗装金属材料の製造方法。
- 請求項6に記載の化成皮膜を有する金属材料の表面上に塗膜を有する塗装金属材料。
- ジルコニウムアルコキシド(a)と、ジルコニウムを含むイオンの供給源(b)と、を配合し、pHが1.5以上6.5以下である化成処理剤。
- 更に、フッ素を含むイオンの供給源(c)を配合した、請求項9に記載の化成処理剤。
- ジルコニウムアルコキシド(a)のジルコニウム換算モル濃度(aM)と、ジルコニウムを含むイオンの供給源(b)のジルコニウム換算モル濃度(bM)との比[aM/bM]が0.01以上10以下である、請求項9または10に記載の化成処理剤。
- 更に、アルコキシシリル基を有する有機シラン化合物(d)を配合した、請求項9~11のいずれか1項に記載の化成処理剤。
- 更に、硝酸イオン及び硫酸イオンから選択される少なくとも1種のイオンの供給源(f)を配合した、請求項9~12のいずれか1項に記載の化成処理剤。
- 請求項9~13のいずれか1項に記載の化成処理剤を金属材料の表面又は表面上に接触させる化成処理工程を含む、化成皮膜を有する金属材料の製造方法。
- 請求項14に記載の製造方法によって形成された化成皮膜を有する金属材料。
- 請求項14に記載の化成処理工程後に、金属材料に塗装を行う塗装工程を更に含む、塗装金属材料の製造方法。
- 請求項15に記載の化成皮膜を有する金属材料の表面上に塗膜を有する塗装金属材料。
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| MX2025004272A MX2025004272A (es) | 2017-10-31 | 2020-07-13 | Agente de pretratamiento y agente de tratamiento de conversion quimica |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110904443A (zh) * | 2019-12-18 | 2020-03-24 | 浙江皇城工坊文化发展有限公司 | 一种表面具有均匀色彩的银制品的制备工艺 |
| EP3827112A4 (en) * | 2018-07-23 | 2022-07-27 | Freiborne Industries, Inc. | METAL PRE-TREATMENT WITH ACID ZINC SULFATE |
| JP7237234B1 (ja) | 2022-12-13 | 2023-03-10 | 日本パーカライジング株式会社 | 化成皮膜付き金属材料の製造方法 |
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Cited By (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP3827112A4 (en) * | 2018-07-23 | 2022-07-27 | Freiborne Industries, Inc. | METAL PRE-TREATMENT WITH ACID ZINC SULFATE |
| CN110904443A (zh) * | 2019-12-18 | 2020-03-24 | 浙江皇城工坊文化发展有限公司 | 一种表面具有均匀色彩的银制品的制备工艺 |
| CN110904443B (zh) * | 2019-12-18 | 2021-09-24 | 浙江皇城工坊文化发展有限公司 | 一种表面具有均匀色彩的银制品的制备工艺 |
| JP2023519079A (ja) * | 2020-01-23 | 2023-05-10 | ディーイービーエックス メディカル ホールディング ビー.ブイ. | 壊死又は感染した組織を体表病変から除去するための組成物 |
| JP7528227B2 (ja) | 2020-01-23 | 2024-08-05 | ディーイービーエックス メディカル ホールディング ビー.ブイ. | 壊死又は感染した組織を体表病変から除去するための組成物 |
| JP7237234B1 (ja) | 2022-12-13 | 2023-03-10 | 日本パーカライジング株式会社 | 化成皮膜付き金属材料の製造方法 |
| JP7282975B1 (ja) | 2022-12-13 | 2023-05-29 | 日本パーカライジング株式会社 | 化成処理剤 |
| WO2024127984A1 (ja) * | 2022-12-13 | 2024-06-20 | 日本パーカライジング株式会社 | 化成皮膜付き金属材料の製造方法 |
| WO2024127983A1 (ja) * | 2022-12-13 | 2024-06-20 | 日本パーカライジング株式会社 | 化成処理剤 |
| JP2024084379A (ja) * | 2022-12-13 | 2024-06-25 | 日本パーカライジング株式会社 | 化成皮膜付き金属材料の製造方法 |
| JP2024084378A (ja) * | 2022-12-13 | 2024-06-25 | 日本パーカライジング株式会社 | 化成処理剤 |
Also Published As
| Publication number | Publication date |
|---|---|
| EP3705602A4 (en) | 2021-08-04 |
| MX2020004175A (es) | 2020-08-03 |
| MX2025004272A (es) | 2025-05-02 |
| CN115261838A (zh) | 2022-11-01 |
| CN111212932A (zh) | 2020-05-29 |
| TW202200841A (zh) | 2022-01-01 |
| CN114086170A (zh) | 2022-02-25 |
| JP2019081941A (ja) | 2019-05-30 |
| US20210172068A1 (en) | 2021-06-10 |
| JP6976347B2 (ja) | 2021-12-08 |
| JPWO2019087475A1 (ja) | 2021-03-25 |
| US20240218520A1 (en) | 2024-07-04 |
| TWI748117B (zh) | 2021-12-01 |
| US11965247B2 (en) | 2024-04-23 |
| EP3705602A1 (en) | 2020-09-09 |
| TW201918585A (zh) | 2019-05-16 |
| TWI779838B (zh) | 2022-10-01 |
| JP6375043B1 (ja) | 2018-08-15 |
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