CN106400072A - Anti-corrosive aluminum-based composite and preparation process thereof - Google Patents
Anti-corrosive aluminum-based composite and preparation process thereof Download PDFInfo
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- CN106400072A CN106400072A CN201610973661.1A CN201610973661A CN106400072A CN 106400072 A CN106400072 A CN 106400072A CN 201610973661 A CN201610973661 A CN 201610973661A CN 106400072 A CN106400072 A CN 106400072A
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- corrosion
- tin coating
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- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 title claims abstract description 73
- 229910052782 aluminium Inorganic materials 0.000 title claims abstract description 73
- 239000002131 composite material Substances 0.000 title claims abstract description 40
- 238000002360 preparation method Methods 0.000 title claims abstract description 17
- ATJFFYVFTNAWJD-UHFFFAOYSA-N Tin Chemical compound [Sn] ATJFFYVFTNAWJD-UHFFFAOYSA-N 0.000 claims abstract description 81
- HCHKCACWOHOZIP-UHFFFAOYSA-N Zinc Chemical compound [Zn] HCHKCACWOHOZIP-UHFFFAOYSA-N 0.000 claims abstract description 69
- 239000011701 zinc Substances 0.000 claims abstract description 69
- 229910052725 zinc Inorganic materials 0.000 claims abstract description 69
- 238000007747 plating Methods 0.000 claims abstract description 18
- 239000000463 material Substances 0.000 claims abstract description 4
- 239000003795 chemical substances by application Substances 0.000 claims abstract 2
- 238000000576 coating method Methods 0.000 claims description 130
- 239000011248 coating agent Substances 0.000 claims description 129
- 239000004411 aluminium Substances 0.000 claims description 57
- 239000003153 chemical reaction reagent Substances 0.000 claims description 27
- 238000005516 engineering process Methods 0.000 claims description 17
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 13
- 238000009713 electroplating Methods 0.000 claims description 10
- 238000000034 method Methods 0.000 claims description 9
- -1 polydimethylsiloxane Polymers 0.000 claims description 9
- 238000002203 pretreatment Methods 0.000 claims description 9
- 238000005507 spraying Methods 0.000 claims description 9
- CWLQUGTUXBXTLF-UHFFFAOYSA-N N-methyl-L-proline monohydrate Natural products CN1CCCC1C(O)=O CWLQUGTUXBXTLF-UHFFFAOYSA-N 0.000 claims description 8
- CWLQUGTUXBXTLF-YFKPBYRVSA-N N-methylproline Chemical compound CN1CCC[C@H]1C(O)=O CWLQUGTUXBXTLF-YFKPBYRVSA-N 0.000 claims description 8
- 239000004205 dimethyl polysiloxane Substances 0.000 claims description 8
- 238000009826 distribution Methods 0.000 claims description 8
- 229920000435 poly(dimethylsiloxane) Polymers 0.000 claims description 8
- 229920000178 Acrylic resin Polymers 0.000 claims description 7
- 239000004925 Acrylic resin Substances 0.000 claims description 7
- 229910021642 ultra pure water Inorganic materials 0.000 claims description 4
- 239000012498 ultrapure water Substances 0.000 claims description 4
- 229940100555 2-methyl-4-isothiazolin-3-one Drugs 0.000 claims description 3
- BEGLCMHJXHIJLR-UHFFFAOYSA-N methylisothiazolinone Chemical compound CN1SC=CC1=O BEGLCMHJXHIJLR-UHFFFAOYSA-N 0.000 claims description 3
- 150000003242 quaternary ammonium salts Chemical class 0.000 claims 1
- 230000007797 corrosion Effects 0.000 abstract description 7
- 238000005260 corrosion Methods 0.000 abstract description 7
- 238000004891 communication Methods 0.000 abstract description 4
- 238000007789 sealing Methods 0.000 abstract 1
- 238000012360 testing method Methods 0.000 description 13
- 230000000052 comparative effect Effects 0.000 description 9
- 239000011159 matrix material Substances 0.000 description 8
- 150000003863 ammonium salts Chemical group 0.000 description 7
- 150000003839 salts Chemical class 0.000 description 4
- 239000007921 spray Substances 0.000 description 4
- JLHMJWHSBYZWJJ-UHFFFAOYSA-N 1,2-thiazole 1-oxide Chemical compound O=S1C=CC=N1 JLHMJWHSBYZWJJ-UHFFFAOYSA-N 0.000 description 3
- 238000004140 cleaning Methods 0.000 description 3
- YTPLMLYBLZKORZ-UHFFFAOYSA-N Thiophene Chemical compound C=1C=CSC=1 YTPLMLYBLZKORZ-UHFFFAOYSA-N 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 125000002496 methyl group Chemical group [H]C([H])([H])* 0.000 description 2
- 239000007800 oxidant agent Substances 0.000 description 2
- 230000001590 oxidative effect Effects 0.000 description 2
- 239000011148 porous material Substances 0.000 description 2
- 238000003466 welding Methods 0.000 description 2
- SMZOUWXMTYCWNB-UHFFFAOYSA-N 2-(2-methoxy-5-methylphenyl)ethanamine Chemical compound COC1=CC=C(C)C=C1CCN SMZOUWXMTYCWNB-UHFFFAOYSA-N 0.000 description 1
- NIXOWILDQLNWCW-UHFFFAOYSA-N 2-Propenoic acid Natural products OC(=O)C=C NIXOWILDQLNWCW-UHFFFAOYSA-N 0.000 description 1
- 238000013459 approach Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 235000013399 edible fruits Nutrition 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- JEIPFZHSYJVQDO-UHFFFAOYSA-N iron(III) oxide Inorganic materials O=[Fe]O[Fe]=O JEIPFZHSYJVQDO-UHFFFAOYSA-N 0.000 description 1
- 238000002156 mixing Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000007935 neutral effect Effects 0.000 description 1
- 230000001681 protective effect Effects 0.000 description 1
- 239000011347 resin Substances 0.000 description 1
- 229920005989 resin Polymers 0.000 description 1
- 239000000758 substrate Substances 0.000 description 1
- 229930192474 thiophene Natural products 0.000 description 1
Classifications
-
- C—CHEMISTRY; METALLURGY
- C25—ELECTROLYTIC OR ELECTROPHORETIC PROCESSES; APPARATUS THEREFOR
- C25D—PROCESSES FOR THE ELECTROLYTIC OR ELECTROPHORETIC PRODUCTION OF COATINGS; ELECTROFORMING; APPARATUS THEREFOR
- C25D5/00—Electroplating characterised by the process; Pretreatment or after-treatment of workpieces
- C25D5/10—Electroplating with more than one layer of the same or of different metals
-
- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
- C09D133/00—Coating compositions based on homopolymers or copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and at least one being terminated by only one carboxyl radical, or of salts, anhydrides, esters, amides, imides, or nitriles thereof; Coating compositions based on derivatives of such polymers
-
- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
- C09D5/00—Coating compositions, e.g. paints, varnishes or lacquers, characterised by their physical nature or the effects produced; Filling pastes
- C09D5/08—Anti-corrosive paints
-
- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
- C09D5/00—Coating compositions, e.g. paints, varnishes or lacquers, characterised by their physical nature or the effects produced; Filling pastes
- C09D5/18—Fireproof paints including high temperature resistant paints
-
- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
- C09D7/00—Features of coating compositions, not provided for in group C09D5/00; Processes for incorporating ingredients in coating compositions
- C09D7/40—Additives
- C09D7/60—Additives non-macromolecular
- C09D7/63—Additives non-macromolecular organic
-
- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
- C09D7/00—Features of coating compositions, not provided for in group C09D5/00; Processes for incorporating ingredients in coating compositions
- C09D7/40—Additives
- C09D7/65—Additives macromolecular
-
- C—CHEMISTRY; METALLURGY
- C25—ELECTROLYTIC OR ELECTROPHORETIC PROCESSES; APPARATUS THEREFOR
- C25D—PROCESSES FOR THE ELECTROLYTIC OR ELECTROPHORETIC PRODUCTION OF COATINGS; ELECTROFORMING; APPARATUS THEREFOR
- C25D5/00—Electroplating characterised by the process; Pretreatment or after-treatment of workpieces
- C25D5/02—Electroplating of selected surface areas
-
- C—CHEMISTRY; METALLURGY
- C25—ELECTROLYTIC OR ELECTROPHORETIC PROCESSES; APPARATUS THEREFOR
- C25D—PROCESSES FOR THE ELECTROLYTIC OR ELECTROPHORETIC PRODUCTION OF COATINGS; ELECTROFORMING; APPARATUS THEREFOR
- C25D5/00—Electroplating characterised by the process; Pretreatment or after-treatment of workpieces
- C25D5/48—After-treatment of electroplated surfaces
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L2205/00—Polymer mixtures characterised by other features
- C08L2205/03—Polymer mixtures characterised by other features containing three or more polymers in a blend
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- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Materials Engineering (AREA)
- Organic Chemistry (AREA)
- Life Sciences & Earth Sciences (AREA)
- Wood Science & Technology (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Electrochemistry (AREA)
- Metallurgy (AREA)
- Electroplating Methods And Accessories (AREA)
- Other Surface Treatments For Metallic Materials (AREA)
Abstract
The invention discloses an anti-corrosive aluminum-based composite and a preparation process thereof. The anti-corrosive aluminum-based composite comprises an aluminum-based material, a tin plating layer and a zinc plating layer, wherein the surface of the aluminum base material is coated with the tin plating layer and the zinc plating layer in sequence; the longitudinal section of the tin plating layer comprises a plurality of squares equidistantly arranged; an exposed area is formed between every two adjacent squares; the zinc plating layer comprises two parts, one part is filled up in the exposed areas, and the surface of the tin plating layer and the surfaces of the filled exposed areas are coated with the other part; and the surface of the zinc plating layer is coated with a sealing agent layer. The aluminum-based composite has good high temperature resistance and corrosion resistance, also has good weldability and is particularly applicable to structures and devices of the communication field.
Description
Technical field
The present invention relates to a kind of composite is and in particular to a kind of corrosion-resisting aluminium based composites and its preparation technology.Belong to
In technical field of surface.
Background technology
The structure that field of wireless communications is commonly used and equipment have whole machine, module, electronic device member and substrate etc..These knots
Structure and equipment are sometimes for applying in complicated external environment, or need to be subjected to other structures or equipment,
Or need to be applied to some electric properties of itself.Therefore, how to ensure that these communication structures or equipment can be applied
In complicated external environment, there is good welding performance and electric property thus ensureing that good functional reliability becomes heavy to closing
Will.
Using aluminum as base material, aluminum matrix composite is obtained by specific preparation technology, and then improve aluminium base itself
Defect, a kind of evolutionary approach of can yet be regarded as.
Content of the invention
The purpose of the present invention is for overcoming above-mentioned the deficiencies in the prior art, providing a kind of corrosion-resisting aluminium based composites.
Present invention also offers the preparation technology of this corrosion-resisting aluminium based composites.
For achieving the above object, the present invention adopts following technical proposals：
A kind of corrosion-resisting aluminium based composites, including aluminium base, and plating plates in the tin coating on its surface and zinc successively
Layer, the longitudinal section of tin coating is several squares of equidistant arrangement, forms exposed region, zinc between two adjacent squares
Coating includes two parts, and a part is filled in exposed region, exposed region table after tin coating and filling for another part plating
Face；The surface-coated capping reagent layer of described zinc coating.
Preferably, the distance between any two adjacent square center is equal to 2 times of the square length of side.
Preferably, the thickness of described tin coating is 7～15 μm.
Preferably, described zinc coating is 8～12 μm higher than the thickness of tin coating.
Preferably, the thickness of described capping reagent layer is 3～8 μm.
Preferably, the sealer in described capping reagent layer is to be formed by the component mixed preparing of following weight portion：Acrylic acid
4～5 parts of resin, 2～3 parts of polydimethylsiloxane, -7 5～12 parts of polyquaternary ammonium salt, 2～3 parts of methylproline, the different thiophene of methyl
2～3 parts of oxazoline ketone, 80～90 parts of water.
A kind of preparation technology of above-mentioned corrosion-resisting aluminium based composites, including step：
(1) aluminium base surface after the pre-treatment laterally, equidistant, abreast electrotinning, form the tin coating of strip distribution；
(2) in tin coating electroplating surface zinc, form zinc coating it is ensured that filling exposed region, and after tin coating and filling
Exposed region surface form horizontal coating；
(3) uniformly coat sealer in Zinc Deposit.
Preferably, in step (1), the concrete grammar of pretreatment is：Clean, the then electricity consumption again by the surface clean of aluminium base
Conductance is the ultra-pure water cleaning of 0.1 μ S/cm.
Preferably, in step (3), sealer is coated using spraying process.
Beneficial effects of the present invention：
The aluminum matrix composite of the present invention is on aluminium base surface successively plating tin coating and zinc coating, finally in zinc coating
Surface-coated capping reagent layer, forms one layer of fine and close protective film, and membranous layer binding force is strong.Tin coating is in bar on the surface of aluminium base
Shape is distributed, and zinc coating and tin coating assume a kind of inserted position relationship of " T " font, and this staggered coating method surprisingly strengthens
The heat-resisting quantity of gained aluminum matrix composite and corrosion resistance, and, there is good solderability, it is particularly well-suited to communication neck
The structure in domain and equipment.
Brief description
Fig. 1 is the vertical section structure schematic diagram of the present invention；
Fig. 2 is the cross section structure schematic diagram of tin coating；
Wherein, 1 is aluminium base, and 2 is tin coating, and 3 is zinc coating, and 4 is capping reagent layer, and 5 is exposed region.
Specific embodiment
The present invention will be further elaborated with reference to the accompanying drawings and examples it should explanation, and the description below is only
It is to explain the present invention, its content is not defined.
Embodiment 1：
As depicted in figs. 1 and 2, a kind of corrosion-resisting aluminium based composites of the present invention, including aluminium base 1, and plate successively
It is overlying on tin coating 2 and the zinc coating 3 on its surface, the longitudinal section of tin coating 2 is several squares of equidistant arrangement, adjacent two
Form exposed region, zinc coating 3 includes two parts, and a part is filled in exposed region 5, another part plating between individual square
Exposed region 5 surface after tin coating 2 and filling；The surface-coated capping reagent layer 4 of zinc coating 3.Any two adjacent square
The distance between shape center is equal to 2 times of the square length of side.The thickness of tin coating 2 is 7 μm.Zinc coating 3 is higher than the thickness of tin coating 2
Spend for 8 μm.The thickness of capping reagent layer 4 is 3 μm.Wherein, the sealer in capping reagent layer 4 is by the component mixing of following weight portion
It is formulated：4 parts of acrylic resin, 2 parts of polydimethylsiloxane, -7 5 parts of polyquaternary ammonium salt, 2 parts of methylproline, methyl is different
2 parts of thiazolinone, 80 parts of water.
A kind of preparation technology of above-mentioned corrosion-resisting aluminium based composites, including step：
(1) pretreatment of aluminium base 1, will its surface clean clean, be then the ultrapure of 0.1 μ S/cm with electrical conductivity again
Water cleans；Aluminium base 1 surface after the pre-treatment laterally, equidistant, abreast electrotinning, form the tin coating 2 of strip distribution；
(2) in tin coating 2 electroplating surface zinc, form zinc coating 3 it is ensured that filling exposed region 5, and in tin coating 2 and fill out
Exposed region 5 surface after filling forms horizontal coating；
(3) on zinc coating 3 surface, sealer is uniformly coated using spraying process.
Embodiment 2：
As depicted in figs. 1 and 2, a kind of corrosion-resisting aluminium based composites of the present invention, including aluminium base 1, and plate successively
It is overlying on tin coating 2 and the zinc coating 3 on its surface, the longitudinal section of tin coating 2 is several squares of equidistant arrangement, adjacent two
Form exposed region 5, zinc coating 3 includes two parts, a part is filled in exposed region 5, another part plates between individual square
It is overlying on exposed region 5 surface after tin coating 2 and filling；The surface-coated capping reagent layer 4 of zinc coating 3.Any two is adjacent just
The distance between square central is equal to 2 times of the square length of side.The thickness of tin coating 2 is 15 μm.Zinc coating 3 is higher than tin coating
Thickness is 12 μm.The thickness of capping reagent layer 4 is 8 μm.Wherein, the sealer in capping reagent layer 4 is by the component of following weight portion
Mixed preparing forms：5 parts of acrylic resin, 3 parts of polydimethylsiloxane, -7 12 parts of polyquaternary ammonium salt, 3 parts of methylproline, first
3 parts of base isothiazolone, 90 parts of water.
A kind of preparation technology of above-mentioned corrosion-resisting aluminium based composites, including step：
(1) pretreatment of aluminium base 1, will its surface clean clean, be then the ultrapure of 0.1 μ S/cm with electrical conductivity again
Water cleans；Aluminium base 1 surface after the pre-treatment laterally, equidistant, abreast electrotinning, form the tin coating 2 of strip distribution；
(2) in tin coating 2 electroplating surface zinc, form zinc coating 3 it is ensured that filling exposed region 5, and in tin coating 2 and fill out
Exposed region 5 surface after filling forms horizontal coating；
(3) on zinc coating 3 surface, sealer is uniformly coated using spraying process.
Embodiment 3：
As depicted in figs. 1 and 2, a kind of corrosion-resisting aluminium based composites of the present invention, including aluminium base 1, and plate successively
It is overlying on tin coating 2 and the zinc coating 3 on its surface, the longitudinal section of tin coating 2 is several squares of equidistant arrangement, adjacent two
Form exposed region 5, zinc coating 3 includes two parts, a part is filled in exposed region 5, another part plates between individual square
It is overlying on exposed region 5 surface after tin coating 2 and filling；The surface-coated capping reagent layer 4 of zinc coating 3.Any two is adjacent just
The distance between square central is equal to 2 times of the square length of side.The thickness of tin coating 2 is 7 μm.Zinc coating 3 is higher than tin coating 2
Thickness is 12 μm.The thickness of capping reagent layer 4 is 3 μm.Wherein, the sealer in capping reagent layer 4 is by the component of following weight portion
Mixed preparing forms：5 parts of acrylic resin, 2 parts of polydimethylsiloxane, -7 12 parts of polyquaternary ammonium salt, 2 parts of methylproline, first
3 parts of base isothiazolone, 80 parts of water.
A kind of preparation technology of above-mentioned corrosion-resisting aluminium based composites, including step：
(1) pretreatment of aluminium base 1, will its surface clean clean, be then the ultrapure of 0.1 μ S/cm with electrical conductivity again
Water cleans；Aluminium base 1 surface after the pre-treatment laterally, equidistant, abreast electrotinning, form the tin coating 2 of strip distribution；
(2) in tin coating 2 electroplating surface zinc, form zinc coating 3 it is ensured that filling exposed region 5, and in tin coating 2 and fill out
Exposed region 5 surface after filling forms horizontal coating；
(3) on zinc coating 3 surface, sealer is uniformly coated using spraying process.
Embodiment 4：
As depicted in figs. 1 and 2, a kind of corrosion-resisting aluminium based composites of the present invention, including aluminium base 1, and plate successively
It is overlying on tin coating 2 and the zinc coating 3 on its surface, the longitudinal section of tin coating 2 is several squares of equidistant arrangement, adjacent two
Form exposed region 5, zinc coating 3 includes two parts, a part is filled in exposed region 5, another part plates between individual square
It is overlying on exposed region 5 surface after tin coating 2 and filling；The surface-coated capping reagent layer 4 of zinc coating 3.Any two is adjacent just
The distance between square central is equal to 2 times of the square length of side.The thickness of tin coating 2 is 15 μm.Zinc coating 3 is higher than tin coating 2
Thickness be 8 μm.The thickness of capping reagent layer 4 is 8 μm.Wherein, the sealer in capping reagent layer 4 is by the component of following weight portion
Mixed preparing forms：4 parts of acrylic resin, 3 parts of polydimethylsiloxane, -7 5 parts of polyquaternary ammonium salt, 3 parts of methylproline, first
2 parts of base isothiazolone, 90 parts of water.
A kind of preparation technology of above-mentioned corrosion-resisting aluminium based composites, including step：
(1) pretreatment of aluminium base 1, will its surface clean clean, be then the ultrapure of 0.1 μ S/cm with electrical conductivity again
Water cleans；Aluminium base 1 surface after the pre-treatment laterally, equidistant, abreast electrotinning, form the tin coating 2 of strip distribution；
(2) in tin coating 2 electroplating surface zinc, form zinc coating 3 it is ensured that filling exposed region 5, and in tin coating 2 and fill out
Exposed region 5 surface after filling forms horizontal coating；
(3) on zinc coating 3 surface, sealer is uniformly coated using spraying process.
Embodiment 5：
As depicted in figs. 1 and 2, a kind of corrosion-resisting aluminium based composites of the present invention, including aluminium base 1, and plate successively
It is overlying on tin coating 2 and the zinc coating 3 on its surface, the longitudinal section of tin coating 2 is several squares of equidistant arrangement, adjacent two
Form exposed region 5, zinc coating 3 includes two parts, a part is filled in exposed region 5, another part plates between individual square
It is overlying on exposed region 5 surface after tin coating 2 and filling；The surface-coated capping reagent layer 4 of zinc coating 3.Any two is adjacent just
The distance between square central is equal to 2 times of the square length of side.The thickness of tin coating 2 is 10 μm.Zinc coating 3 is higher than tin coating 2
Thickness be 9 μm.The thickness of capping reagent layer 4 is 6 μm.Wherein, the sealer in capping reagent layer 4 is by the component of following weight portion
Mixed preparing forms：4.5 parts of acrylic resin, 2.5 parts of polydimethylsiloxane, -7 8 parts of polyquaternary ammonium salt, methylproline 3
Part, 2 parts of Methylisothiazolinone, 85 parts of water.
A kind of preparation technology of above-mentioned corrosion-resisting aluminium based composites, including step：
(1) pretreatment of aluminium base 1, will its surface clean clean, be then the ultrapure of 0.1 μ S/cm with electrical conductivity again
Water cleans；Aluminium base 1 surface after the pre-treatment laterally, equidistant, abreast electrotinning, form the tin coating 2 of strip distribution；
(2) in tin coating 2 electroplating surface zinc, form zinc coating 3 it is ensured that filling exposed region 5, and in tin coating 2 and fill out
Exposed region 5 surface after filling forms horizontal coating；
(3) on zinc coating 3 surface, sealer is uniformly coated using spraying process.
Comparative example 1
A kind of corrosion-resisting aluminium based composites, including aluminium base, and plating plates in the tin coating on its surface and zinc successively
Layer, the longitudinal section of tin coating is several squares of equidistant arrangement, forms exposed region, zinc between two adjacent squares
Coating includes two parts, and a part is filled in exposed region, exposed region table after tin coating and filling for another part plating
Face；The surface-coated capping reagent layer of zinc coating.The distance between any two adjacent square center is equal to the 2 of the square length of side
Times.The thickness of tin coating is 10 μm.Zinc coating is higher than that the thickness of tin coating is 9 μm.The thickness of capping reagent layer is 6 μm.Wherein, seal
The sealer closing in oxidant layer is purchased from Di Sien Science and Technology Ltd. of Shenzhen, model DSE-30.
A kind of preparation technology of above-mentioned corrosion-resisting aluminium based composites, including step：
(1) pretreatment of aluminium base, will its surface clean clean, the ultra-pure water being then 0.1 μ S/cm with electrical conductivity again
Cleaning；Aluminium base surface after the pre-treatment laterally, equidistant, abreast electrotinning, form the tin coating of strip distribution；
(2) in tin coating electroplating surface zinc, form zinc coating it is ensured that filling exposed region, and after tin coating and filling
Exposed region surface form horizontal coating；
(3) in Zinc Deposit, sealer is uniformly coated using spraying process.
Comparative example 2
A kind of corrosion-resisting aluminium based composites, including aluminium base, and successively plating in the tin coating on its surface, zinc coating
And capping reagent layer.The thickness of tin coating is 10 μm.The thickness of zinc coating is 9 μm.The thickness of capping reagent layer is 6 μm.Wherein, close
Sealer in oxidant layer is to be formed by the component mixed preparing of following weight portion：4.5 parts of acrylic resin, polydimethylsiloxane
2.5 parts, -7 8 parts of polyquaternary ammonium salt, 3 parts of methylproline, 2 parts of Methylisothiazolinone, 85 parts of water.
A kind of preparation technology of above-mentioned corrosion-resisting aluminium based composites, including step：
(1) pretreatment of aluminium base, will its surface clean clean, the ultra-pure water being then 0.1 μ S/cm with electrical conductivity again
Cleaning；Aluminium base electroplating surface stannum after the pre-treatment, forms tin coating；
(2) in tin coating electroplating surface zinc, form zinc coating；
(3) in Zinc Deposit, sealer is uniformly coated using spraying process.
Test example
1st, high temperature resistant test
Carry out high temperature resistant test 3 hours, bubble, pore, flavescence etc. all in embodiment 1～5 surface under the conditions of 260 DEG C
Bad phenomenon, illustrates that the aluminum matrix composite of the present invention has good resistance to elevated temperatures.Comparative example 1 and comparative example 2 exist respectively
Bubble and pore in the 2nd hour and the 20th minute respectively in what test was carried out, and heat-resisting quantity is poor.
2nd, solderability test
Embodiment 1～5 and the aluminum matrix composite of comparative example 1～2, each intercept long 76mm × wide 25mm, thereon
Three aperture print stannum tests are carried out, hole distance of center circle is 10mm, and bore dia is 6.5mm, and hole depth is 0.2mm, enters at 220 DEG C
Row solderability tests (90s), and the aluminum matrix composite of embodiment 1～5 and comparative example 1 scolding tin gathering, contracting stannum all, do not moisten
The unequal bad phenomenon of wet, moistening, the standard meeting J-STD-002A (L) requires, and has good welding effect.And comparative example
2 occur in that scolding tin is assembled and non-wetted situation, and solderability is substantially poor.
3rd, corrosion resistance test
Neutral salt spray test (24 hours) is carried out to the aluminum matrix composite of embodiment 1～5 and comparative example 1～2, knot
Fruit finds, the aluminum matrix composite of embodiment 1～5 signs of corrosion such as variable color all, has good decay resistance.Right
Being slightly yellow occurs in the surface of ratio 1, and corrosion resistance is slightly poor, and red corrosion sign, decay resistance in the surface of comparative example 2
Poor.
Then, embodiment 1～5 is carried out with further salt spray test, test is covered for dark brown rust (DBR) when 5% surface
Time span during lid, the results are shown in Table 1, the corrosion resistance of embodiment 5 is optimal, and it is long that it the salt spray test hourage of 5%DBR
Reach 450 hours.
Salt spray test hourage when 5%DBR for the table 1.
| Time (h) | |
| Embodiment 1 | 423 |
| Embodiment 2 | 421 |
| Embodiment 3 | 434 |
| Embodiment 4 | 433 |
| Embodiment 5 | 450 |
Although the above-mentioned accompanying drawing that combines is described to the specific embodiment of the present invention, not model is protected to the present invention
The restriction enclosed, on the basis of technical scheme, those skilled in the art do not need to pay creative work and can do
The various modifications going out or deformation are still within protection scope of the present invention.
Claims (9)
1. a kind of corrosion-resisting aluminium based composites it is characterised in that include aluminium base, and successively plating in its surface stannum plate
Layer and zinc coating, the longitudinal section of tin coating is several squares of equidistant arrangement, is formed sudden and violent between two adjacent squares
Dew region, zinc coating includes two parts, and a part is filled in exposed region, and another part plating is sudden and violent after tin coating and filling
Dew region surface；The surface-coated capping reagent layer of described zinc coating.
2. a kind of corrosion-resisting aluminium based composites according to claim 1 are it is characterised in that any two adjacent square
The distance between center is equal to 2 times of the square length of side.
3. a kind of corrosion-resisting aluminium based composites according to claim 1 are it is characterised in that the thickness of described tin coating is
7～15 μm.
4. a kind of corrosion-resisting aluminium based composites according to claim 1 are it is characterised in that described zinc coating is higher than stannum plating
The thickness of layer is 8～12 μm.
5. a kind of corrosion-resisting aluminium based composites according to claim 1 are it is characterised in that the thickness of described capping reagent layer
For 3～8 μm.
6. a kind of corrosion-resisting aluminium based composites according to claim 1 are it is characterised in that envelope in described capping reagent layer
Closing agent is to be formed by the component mixed preparing of following weight portion：4～5 parts of acrylic resin, 2～3 parts of polydimethylsiloxane, gathers
- 7 5～12 parts of quaternary ammonium salt, 2～3 parts of methylproline, 2～3 parts of Methylisothiazolinone, 80～90 parts of water.
7. a kind of corrosion-resisting aluminium based composites any one of claim 1～6 preparation technology it is characterised in that
Including step：
(1) aluminium base surface after the pre-treatment laterally, equidistant, abreast electrotinning, form the tin coating of strip distribution；
(2) in tin coating electroplating surface zinc, form zinc coating it is ensured that filling exposed region, and sudden and violent after tin coating and filling
Dew region surface forms horizontal coating；
(3) uniformly coat sealer in Zinc Deposit.
8. preparation technology according to claim 7 it is characterised in that in step (1) concrete grammar of pretreatment be：By aluminum
The surface clean of base material is clean, is then cleaned with the ultra-pure water that electrical conductivity is 0.1 μ S/cm again.
9. preparation technology according to claim 7 it is characterised in that in step (3) sealer applied using spraying process
Cover.
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| CN111040553A (en) * | 2019-12-31 | 2020-04-21 | 江南大学 | Sealing protective agent and preparation method thereof |
| CN114072543A (en) * | 2019-05-15 | 2022-02-18 | 纽弗雷公司 | Stud/nut grounding device with tin-zinc coating |
| CN114411216A (en) * | 2021-12-17 | 2022-04-29 | 象山创亿金属制品有限公司 | Aluminum-based composite material and processing technology thereof |
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