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CN111334160A - Water-based anticorrosive primer and preparation method thereof - Google Patents

Water-based anticorrosive primer and preparation method thereof Download PDF

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Publication number
CN111334160A
CN111334160A CN202010216178.5A CN202010216178A CN111334160A CN 111334160 A CN111334160 A CN 111334160A CN 202010216178 A CN202010216178 A CN 202010216178A CN 111334160 A CN111334160 A CN 111334160A
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water
parts
agent
waterborne
ester resin
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陈淼
刘文杰
官慧
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Guangzhou Jointas Chemical Co Ltd
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Guangzhou Jointas Chemical Co Ltd
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    • CCHEMISTRY; METALLURGY
    • C09DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
    • C09DCOATING 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
    • C09D163/00Coating compositions based on epoxy resins; Coating compositions based on derivatives of epoxy resins
    • CCHEMISTRY; METALLURGY
    • C09DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
    • C09DCOATING 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
    • C09D133/00Coating 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
    • C09D133/04Homopolymers or copolymers of esters
    • CCHEMISTRY; METALLURGY
    • C09DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
    • C09DCOATING 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
    • C09D5/00Coating compositions, e.g. paints, varnishes or lacquers, characterised by their physical nature or the effects produced; Filling pastes
    • C09D5/08Anti-corrosive paints
    • CCHEMISTRY; METALLURGY
    • C09DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
    • C09DCOATING 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
    • C09D5/00Coating compositions, e.g. paints, varnishes or lacquers, characterised by their physical nature or the effects produced; Filling pastes
    • C09D5/16Antifouling paints; Underwater paints
    • C09D5/1656Antifouling paints; Underwater paints characterised by the film-forming substance
    • C09D5/1662Synthetic film-forming substance
    • CCHEMISTRY; METALLURGY
    • C09DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
    • C09DCOATING 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
    • C09D5/00Coating compositions, e.g. paints, varnishes or lacquers, characterised by their physical nature or the effects produced; Filling pastes
    • C09D5/16Antifouling paints; Underwater paints
    • C09D5/1656Antifouling paints; Underwater paints characterised by the film-forming substance
    • C09D5/1662Synthetic film-forming substance
    • C09D5/1668Vinyl-type polymers
    • CCHEMISTRY; METALLURGY
    • C09DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
    • C09DCOATING 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
    • C09D5/00Coating compositions, e.g. paints, varnishes or lacquers, characterised by their physical nature or the effects produced; Filling pastes
    • C09D5/16Antifouling paints; Underwater paints
    • C09D5/1687Use of special additives
    • CCHEMISTRY; METALLURGY
    • C08ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08KUse of inorganic or non-macromolecular organic substances as compounding ingredients
    • C08K3/00Use of inorganic substances as compounding ingredients
    • C08K3/18Oxygen-containing compounds, e.g. metal carbonyls
    • C08K3/20Oxides; Hydroxides
    • C08K3/22Oxides; Hydroxides of metals
    • C08K2003/2265Oxides; Hydroxides of metals of iron
    • C08K2003/2272Ferric oxide (Fe2O3)
    • CCHEMISTRY; METALLURGY
    • C08ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08LCOMPOSITIONS OF MACROMOLECULAR COMPOUNDS
    • C08L2205/00Polymer mixtures characterised by other features
    • C08L2205/03Polymer mixtures characterised by other features containing three or more polymers in a blend
    • C08L2205/035Polymer mixtures characterised by other features containing three or more polymers in a blend containing four or more polymers in a blend

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  • Life Sciences & Earth Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Materials Engineering (AREA)
  • Wood Science & Technology (AREA)
  • Organic Chemistry (AREA)
  • Paints Or Removers (AREA)

Abstract

The invention provides a water-based anticorrosive primer and a preparation method thereof, wherein the water-based anticorrosive primer comprises the following raw materials in parts by weight: 15-30 parts of water-based epoxy ester resin; 0.5-1 part of pH regulator; 0.2-2 parts of a drier; 25-45 parts of water; 0.1-0.3 part of wetting agent; 0.15-0.25 part of a dispersing agent; 0.1-0.25 part of defoaming agent; 0-2 parts of an anti-settling agent; 5-20 parts of pigment and filler; 0-6 parts of an antirust pigment; 15-30 parts of acrylic emulsion; 1-2 parts of a film-forming assistant; 0-0.2 part of flash rust inhibitor; 0.1-1 part of thickening agent. The water-based anticorrosive primer disclosed by the invention is quick to naturally dry, the surface drying time is not more than 20min, the full drying time is not more than 5h, the adhesive force is high, the VOC content is not more than 40g/L, the water-based anticorrosive primer is environment-friendly and safe, and the salt spray resistance and the oil stain resistance are excellent.

Description

Water-based anticorrosive primer and preparation method thereof
Technical Field
The invention belongs to the technical field of coatings, and particularly relates to a water-based anticorrosive primer and a preparation method thereof.
Background
Statistically, the annual worldwide loss of metal due to corrosion represents about 30% of its annual production. In the industrial production of petroleum, chemical industry, pesticide and the like, safety accidents caused by corrosion frequently occur, so that not only is huge economic loss caused, but also toxic substances are leaked out to cause environmental pollution and endanger human life. Therefore, the corrosion problem is increasingly emphasized in various countries of the world. A great deal of research is carried out on corrosion and protection at home and abroad, the corrosion rate is reduced by researching the corrosion mechanism and adopting a reasonable protection method, the operation period of equipment can be greatly prolonged, and remarkable economic benefit is generated. Among the various protection methods, the application of anticorrosive paint is the most effective, most economical and most commonly applied anticorrosive method.
With the rapid development of modern industry, the automobile parts have increasingly prominent functions in the industry, and a good matching coating is required to protect the inner and outer walls of the automobile parts such as a diesel engine, and the like, and particularly the coating is required to have anti-corrosion properties such as oil stain resistance and the like. At present, the automobile part industry mostly adopts a solvent single-component primer-topcoat one-component system or a solvent two-component epoxy system coating, such as solvent epoxy ester resin and solvent alkyd resin. When the solvent type resin is adopted as the film forming system coating to construct automobile parts, a large amount of benzene and ether ketone solvents are used, and the environmental problems of high VOC (volatile organic compounds) emission and serious pollution exist. In order to change the increasingly severe environmental situation, the water-based coating of automobile parts is important.
At present, the waterborne two-component epoxy system and the waterborne two-component polyurethane system can well meet the corrosion resistance requirement of automobile parts, and simultaneously, the environmental problems of high VOC (volatile organic compounds) emission and serious pollution do not exist. However, the coating is high in cost, and the metal casting has complex morphological characteristic factors (large volume, different shapes and sizes, and difficult effective and uniform spraying and covering due to multi-groove inner cavities), so that the two-component system is difficult to popularize and apply in the field of automobile parts. Therefore, the development of the aqueous single-component anticorrosive primer which can adapt to the industrial continuous production dip-coating construction is of great significance.
In the field of the current water-based industrial coating, an acrylic emulsion system, a water-based alkyd system and a water-based epoxy ester system are widely applied to single-component anticorrosion primers. The water-based acrylic emulsion system can dry quickly, but the poor salt spray resistance (generally less than 120h) is difficult to meet the requirements of the industrial coating field on the anticorrosion performance and the like, and the water-based alkyd system and the water-based epoxy ester system have the defect of low drying speed although the water-based alkyd system and the water-based epoxy ester system have good anticorrosion performance. In order to overcome the defects of the single-component water-based paint, researchers try to compound different water-based paints, hopefully, the balance between the performances can be well achieved, and the requirements of line dryness and corrosion resistance of the anti-corrosion primer for the automobile parts are met. For example, CN109439090A adopts water-based acrylic emulsion and water-based epoxy ester resin emulsion as coating main bodies, and combines an environment-friendly solvent, a drier and other auxiliaries to prepare the corrosion-resistant quick-drying environment-friendly water-based paint, but the water-based paint has the adhesive force only reaching level 1, limited adhesive force, overlong drying time and salt fog resistance only reaching 96 hours; for example, CN105885690A adopts modified acrylic emulsion, water-based epoxy ester resin, silica sol, aluminum tripolyphosphate and other additives to prepare anticorrosive paint, but the flexibility and adhesion of the formed coating are not sufficient, and if the modified acrylic emulsion is replaced by unmodified acrylic emulsion, the hardness, flexibility, impact resistance, water resistance, alkali resistance, acid resistance, salt spray resistance and other properties of the coating will be significantly reduced, and it is difficult to meet the requirements of industrial coating field for anticorrosive property and the like.
Disclosure of Invention
Aiming at the problems in the prior art, the invention provides the water-based anticorrosive primer and the preparation method thereof.
The water-based anticorrosive primer disclosed by the invention comprises the following raw materials in parts by weight:
15-30 parts of water-based epoxy ester resin;
0.5-1 part of pH regulator;
0.2-2 parts of a drier;
25-45 parts of water;
0.1-0.3 part of wetting agent;
0.15-0.25 part of a dispersing agent;
0.1-0.25 part of defoaming agent;
0-2 parts of an anti-settling agent;
5-20 parts of pigment and filler;
0-6 parts of an antirust pigment;
15-30 parts of acrylic emulsion;
1-2 parts of a film-forming assistant;
0-0.2 part of flash rust inhibitor;
0.1-1 part of thickening agent.
Further, the solid content of the waterborne epoxy ester resin is 70-80%, the viscosity is less than or equal to 500mPa & s, and the glass transition temperature is 45 ℃. The waterborne epoxy resin with the appropriate performance is selected for use, can be mixed and ground with other components, is fine and uniform in dispersion, can be subjected to oxidative crosslinking under the action of the drier to achieve self-drying, promotes drying, and gives a paint film better initial water resistance and oil stain resistance. In some embodiments, the waterborne epoxy ester resin can be YG-EE672A waterborne epoxy ester resin from Beijing Sun Vigord environmental protection science and technology, which has a solid content of 74 + -2%, contains no emulsifier and can be ground.
Further, the solid content of the acrylic emulsion is 45-50%, the glass transition temperature is 35 ℃, the film forming temperature is not less than 30 ℃, the pH is 8, and the viscosity is 100-400 mPa. The acrylic emulsion can participate in the grinding of the waterborne epoxy ester resin, and the acrylic emulsion and the waterborne epoxy ester resin jointly act to improve the corrosion resistance; moreover, the addition of the acrylic emulsion can reduce the tack-free and tack-free time of the waterborne primer. In some embodiments, the acrylic emulsion may be a Coxcen, which is commonly available from New materials science and technology, Inc. (Shanghai)TM8196 the product is milky white liquid with a solid content of 46 plus or minus 1 percent and a minimum film forming temperature of 30 ℃.
Further, the weight of the PH regulator is 2-4% of that of the waterborne epoxy ester resin.
Further, the pH adjusting agent is at least one selected from the group consisting of ammonia water, N-methylethanolamine, N-N dimethylethanolamine, 2-amino-2-methyl-1-propanol, dimethylethanolamine, monoethanolamine, diethanolamine, triethanolamine, sodium hydroxide and potassium hydroxide.
Further, the weight of the drier is 1.5-5% of that of the waterborne epoxy ester resin.
Further, the drier is selected from cobalt catalysts. In some embodiments, the catalyst may be a cobalt-based drier, YG-DR02 from environmental protection technologies, Inc. of Beijing Sun Vigord.
Further, the wetting agent is selected from at least one of nonionic alkyl ethoxy wetting agents, polyether modified polysiloxane wetting agents (such as octyl phenol polyoxyethylene ether) and nonionic organic fluorine wetting agents.
Further, the dispersant is selected from polyacrylic acid based dispersants.
Further, the defoaming agent is selected from silicone defoaming agents.
Further, the anti-settling agent is selected from at least one of attapulgite, swellable cellulose and fumed silica.
Further, the pigment and filler comprise pigments and/or fillers, the pigments are selected from at least one of iron oxide red, iron oxide yellow, iron oxide black, titanium dioxide, lithopone, zinc white, chrome yellow powder, cadmium yellow, chrome green, chrome oxide green, iron blue, group blue, cadmium red, molybdenum chrome red, carbon black and phthalocyanine blue, and the fillers are selected from at least one of talcum powder, barium sulfate, mica powder and feldspar powder.
Further, the rust preventive pigment is selected from zinc phosphate corrosion inhibitors.
Further, the film forming auxiliary agent is selected from at least one of alcohol ester twelve, dipropylene glycol butyl ether, dipropylene glycol methyl ether, ethylene glycol butyl ether and diethylene glycol butyl ether.
Further, the flash rust inhibitor is selected from nitrites, such as sodium nitrite, potassium nitrite.
Further, the thickener is selected from polyurethane thickeners.
The preparation method of the water-based anticorrosive primer provided by the invention comprises the following steps:
(1) uniformly stirring the water-based epoxy ester resin, the pH regulator and the drier, sequentially adding water, a wetting agent, a dispersing agent, a defoaming agent, an anti-settling agent, a pigment filler and an anti-rust pigment, uniformly stirring, and grinding to the fineness of less than or equal to 50 microns;
(2) and (2) adding an acrylic emulsion, a film forming aid, an anti-flash rust agent and a thickening agent into the mixture ground in the step (1) in sequence, mixing until the viscosity of a mixed system is 70-85 KU, and filtering to obtain the water-based anticorrosive primer.
Further, in the step (1), the stirring speed is 700-1000 r/min.
The invention utilizes a pH regulator to regulate the pH of the waterborne epoxy ester resin, then forms a waterborne epoxy ester resin emulsion with water, and then fully disperses with an acrylic emulsion to form the waterborne dip-coating anticorrosive primer with uniform components. The water-based epoxy ester resin and the acrylic emulsion are matched for use, and the proportion of each raw material is scientifically controlled, so that the final water-based dip-coating anticorrosive primer has the performances of quick drying, low VOC, better salt mist resistance, oil stain resistance and the like, is suitable for dip-coating the surface of a base material, and fully meets the requirement of the water-based dip-coating anticorrosive primer for automobile parts.
Compared with the prior art, the invention achieves the following technical effects:
(1) at normal temperature, the surface drying time of the water-based anticorrosive primer is less than or equal to 20min, the actual drying time is less than or equal to 5h, and the drying time is shorter.
(2) The water-based anticorrosive primer disclosed by the invention has the adhesive force reaching 0 grade, can be bent to be less than or equal to 1mm, and has strong adhesive force and flexibility.
(3) The salt spray resistant time of a dry film with the thickness of 60 mu m formed by the water-based anticorrosive primer is more than or equal to 240h, and the water-based anticorrosive primer has excellent oil resistance and corrosion resistance to kerosene, hot engine oil and hot cleaning agents.
(4) The VOC content of the water-based anticorrosive primer is less than or equal to 40g/L, and the water-based anticorrosive primer is environment-friendly and safe.
Detailed Description
The technical scheme of the invention is further illustrated by the following examples. Other raw materials used in the following examples are those conventionally commercially available, unless otherwise specified. The test methods used are, unless otherwise specified, conventional or in accordance with relevant standard requirements.
The invention provides a water-based anticorrosive primer which comprises the raw materials in parts by weight shown in examples 1-4 in the following table 1. For comparison, a comparative example in which the acrylic emulsion was omitted was added in Table 1.
TABLE 1 raw material dosage of water-based anti-corrosive primer
Figure BDA0002424502310000041
Figure BDA0002424502310000051
Wherein the waterborne epoxy ester resin is YG-EE672A waterborne epoxy ester resin of sunshine Vigorboom (Beijing sunshine Vigorboom environmental protection technology Co., Ltd.).
The pH regulator is N, N-dimethylethanolamine.
The drier is a novel cobalt drier of sunshine Vigord YG-DR 02.
The wetting agent is octylphenol polyoxyethylene ether, Dow company, designation X-405.
The dispersant is a macromolecular hydrophobic modified dispersant, a polyacrylic acid compound, Dow company, brand 731A.
The defoaming agent is an organic silicon defoaming agent, and is the brand 901W of Germany Digao company.
The anti-settling agent is fumed silica.
The pigment filler here comprises only pigment, being red iron oxide, where Fe2O3The content is not less than 98 percent. In practice, fillers may be added on the basis of pigments as desired.
The rust-proof pigment is a zinc phosphate corrosion inhibitor, and is sold under the brand name Nubirox106 by Nippon-Beaud Spain.
The acrylic emulsion is Coxcen which is commonly used as (Shanghai) new material science and technology limited companyTM8196 the acrylic emulsion is milky white liquid with a solid content of 46 +/-1 percent and a minimum film forming temperature of 30 ℃.
The film-forming assistant is ethylene glycol butyl ether.
The flash rust inhibitor is sodium nitrite.
The thickener is nonionic polyurethane association type thickener, which is commonly available from Shanghai New Material science and technology Co., Ltd, and is available under the trade name U-501.
The preparation method of the water-based anticorrosive primer comprises the following steps:
(1) adding the waterborne epoxy ester resin into a dispersion cylinder, and sequentially adding a pH regulator and a drier for dispersion for 5min under the condition that the rotating speed is 1000 r/min. Regulating the rotating speed to 750r/min, sequentially adding water, a wetting agent, a dispersing agent, a defoaming agent, a pigment and an antirust pigment, uniformly stirring at a high speed, and grinding to the fineness of less than 50 micrometers.
(2) And then sequentially adding acrylic emulsion, an anti-flash rust agent and a film forming aid, finally adding a thickening agent to adjust the viscosity to 72KU, and filtering by using 200-mesh spun silk cloth to obtain the water-based anticorrosive primer.
The water-based anticorrosive primer obtained in the examples 1-4 and the comparative example is sampled and detected, and the sample is prepared according to the specified requirements and methods, and then is placed at the ambient temperature for more than 48 hours (except for drying performance), and the main technical indexes are shown in table 2.
TABLE 2 Main technical indexes of the water-based anti-corrosive primer
Figure BDA0002424502310000061
The proportion of the acrylic emulsion in the example 1 is correspondingly increased, meanwhile, the proportion of the water-based epoxy ester resin is correspondingly reduced or increased, the proportion of other components is unchanged according to the example 1, the drying time and the actual drying time of the same standard test table are obviously shortened, and the increase of the using amount of the quick-drying acrylic emulsion 8196 can effectively accelerate the drying speed of the water-based dip-coating anticorrosion primer, so that the off-line requirement can be better met. In the comparative example, only the waterborne epoxy ester resin is used as a film forming substance, the surface drying time of the same standard test needs 1.5 hours, the actual drying time needs 12 hours, and meanwhile, the adhesive force and the flexibility of a paint film are reduced, which shows that the addition of the acrylic emulsion can endow the waterborne dip-coating primer with better dryness, adhesive force and flexibility.
The performances of the kerosene-resistant, heat-resistant engine oil-resistant and heat-resistant cleaning agent of the water-based anticorrosive primer of examples 1, 2 and 3 were tested, and the test method and test results were as follows:
kerosene resistance: diluting the water-based anticorrosive primer to construction viscosity (coating the primer in a cup of-4 ℃ for 16-18 s at 20 ℃), soaking the primer on a tinplate sample for 20s, standing the sample at room temperature for 10min, drying the sample at 100-110 ℃ for 1.5h, taking the sample out, cooling the sample, soaking the sample in kerosene for 6h, wherein no bubbles or wrinkles occur, and a paint film is complete.
Heat engine oil resistance: diluting the water-based anticorrosive primer to construction viscosity (coating the primer in a cup of-4 ℃ for 16-18 s at 20 ℃), soaking the primer on a steel bar for 20s for one time, standing the primer at room temperature for 10min, then drying the primer at 60 +/-2 ℃ for 30min, taking the primer out, standing the primer at room temperature for 72h, and soaking the primer in N100D engine oil at 90 ℃ for 24h, wherein the water-based anticorrosive primer has no fading and paint stripping phenomena after being lightly wiped.
Heat-resistant cleaning agent property: diluting the water-based anticorrosive primer to construction viscosity (coating the paint in a cup of-4 ℃ for 20 ℃ for 22-24 s), soaking the paint on a steel plate for 20s, standing the paint at room temperature for 10min, drying the paint at 60 +/-2 ℃ for 30min, taking the paint out, standing the paint at room temperature for 72h, and soaking the paint in a 4% cleaning agent solvent at 70 ℃ for 8h, wherein the paint film does not fade or paint stripping after being lightly wiped.
In addition, the water-based anticorrosion primer of example 1 is sprayed on a cold-rolled steel sheet to prepare a paint film with a dry film of 60 μm, the pencil hardness of the paint film after being dried for 7 days by air is HB (refer to GB/T6739), the pencil hardness can be increased to H after being baked for 30min at 80 ℃, and the increase of the environmental temperature after the paint film is dried can further promote the oxidation crosslinking reaction degree of the paint film, so that a more compact body-shaped net structure is formed, and higher hardness and mechanical strength are obtained.
The detection data show that the water-based anticorrosive primer disclosed by the invention is quick to dry naturally, the surface drying time is not more than 20min, the solid drying time is not more than 5h, the adhesive force is high, the VOC content is not more than 40g/L, the water-based anticorrosive primer is environment-friendly and safe, and the salt spray resistance and the oil stain resistance are excellent. In contrast, if the amount of the waterborne epoxy ester resin and the acrylic emulsion is beyond the range of the present invention, for example, if the amount of the waterborne epoxy ester resin and the amount of the acrylic emulsion are increased, the decrease of the amount of the waterborne epoxy ester resin and the amount of the acrylic emulsion will result in the slower drying speed and the longer drying time of the waterborne anticorrosion primer.
The above embodiments are preferred embodiments of the present invention, but the present invention is not limited to the above embodiments, and any other changes, modifications, substitutions, combinations, and simplifications which do not depart from the spirit and principle of the present invention should be construed as equivalents thereof, and all such changes, modifications, substitutions, combinations, and simplifications are intended to be included in the scope of the present invention.

Claims (10)

1. The water-based anticorrosive primer is characterized in that: the feed comprises the following raw materials in parts by weight:
15-30 parts of water-based epoxy ester resin;
0.5-1 part of pH regulator;
0.2-2 parts of a drier;
25-45 parts of water;
0.1-0.3 part of wetting agent;
0.15-0.25 part of a dispersing agent;
0.1-0.25 part of defoaming agent;
0-2 parts of an anti-settling agent;
5-20 parts of pigment and filler;
0-6 parts of an antirust pigment;
15-30 parts of acrylic emulsion;
1-2 parts of a film-forming assistant;
0-0.2 part of flash rust inhibitor;
0.1-1 part of thickening agent.
2. The waterborne corrosion resistant primer according to claim 1, wherein: the solid content of the waterborne epoxy ester resin is 70-80%.
3. The waterborne corrosion resistant primer according to claim 1, wherein: the solid content of the acrylic emulsion is 45-50%, and the film forming temperature is more than or equal to 30 ℃.
4. The waterborne corrosion resistant primer according to claim 1, wherein: the weight of the PH regulator is 2-4% of that of the waterborne epoxy ester resin.
5. The waterborne corrosion resistant primer according to claim 4, wherein: the pH regulator is at least one selected from ammonia water, N-methylethanolamine, N-N dimethylethanolamine, 2-amino-2-methyl-1-propanol, dimethylethanolamine, monoethanolamine, diethanolamine, triethanolamine, sodium hydroxide and potassium hydroxide.
6. The waterborne corrosion resistant primer according to claim 1, wherein: the weight of the drier is 1.5-5% of that of the waterborne epoxy ester resin.
7. The waterborne corrosion resistant primer according to claim 6, wherein: the drier is selected from cobalt catalysts.
8. The waterborne corrosion resistant primer according to claim 1, wherein: the wetting agent is selected from at least one of nonionic alkyl ethoxy wetting agents, polyether modified polysiloxane wetting agents and nonionic organic fluorine wetting agents.
9. A preparation method of water-based anticorrosive primer is characterized by comprising the following steps: the water-based anticorrosive primer comprises the raw materials of any one of claims 1 to 8, and comprises the following steps:
(1) uniformly stirring the water-based epoxy ester resin, the pH regulator and the drier, sequentially adding water, a wetting agent, a dispersing agent, a defoaming agent, an anti-settling agent, a pigment filler and an anti-rust pigment, uniformly stirring, and grinding to the fineness of less than or equal to 50 microns;
(2) and (2) adding an acrylic emulsion, a film forming aid, an anti-flash rust agent and a thickening agent into the mixture ground in the step (1) in sequence, mixing until the viscosity of a mixed system is 70-85 KU, and filtering to obtain the water-based dip-coating anticorrosive primer.
10. The method for preparing the water-based dip coating anticorrosion primer according to claim 9, characterized in that: in the step (1), the stirring speed is 700-1000 r/min.
CN202010216178.5A 2020-03-25 2020-03-25 Water-based anticorrosive primer and preparation method thereof Pending CN111334160A (en)

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Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN112143309A (en) * 2020-09-16 2020-12-29 广州集泰化工股份有限公司 Water-based anti-sticking anticorrosion primer and preparation method and application thereof
CN112662242A (en) * 2020-12-29 2021-04-16 湖南金化科技集团有限公司 Water-based antirust coating for hot-rolled steel pipe and preparation method thereof
CN114163920A (en) * 2021-12-03 2022-03-11 清远威凛材料科技有限公司 Water-based automobile primer and preparation method thereof
WO2022088137A1 (en) * 2020-10-31 2022-05-05 河北比尔尼克新材料科技股份有限公司 Water-based acrylic paint, preparation method therefor and application thereof
CN116592272A (en) * 2023-04-11 2023-08-15 浙江鑫佳硕科技有限公司 Pneumatic system of machine tool
CN117019602A (en) * 2023-06-28 2023-11-10 东风商用车有限公司 Water-based engine paint pretreatment-free coating method for engine
CN119019901A (en) * 2024-09-06 2024-11-26 江阴市荣新塑化有限公司 Weather-resistant water-based car body paint and preparation method thereof

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN106366851A (en) * 2016-08-30 2017-02-01 河北晨阳工贸集团有限公司 Epoxy ester dip-coating water based paint and preparation method thereof
CN109135455A (en) * 2018-07-06 2019-01-04 河北晨阳工贸集团有限公司 A kind of aqueous protective paint of high-performance water proof and wearable and preparation method thereof
CN109439090A (en) * 2018-11-02 2019-03-08 河北晨阳工贸集团有限公司 A kind of corrosion-resistant quick dried environment protection water paint and preparation method thereof
CN109777229A (en) * 2019-02-20 2019-05-21 河北晨阳工贸集团有限公司 A kind of acrylic acid protective primer and preparation method thereof
CN110093094A (en) * 2019-04-11 2019-08-06 广州集泰化工股份有限公司 A kind of axle vehicle sedan-chair bottom surface unification aqueous anticorrosion paint and preparation method thereof
CN110499079A (en) * 2019-08-20 2019-11-26 成都拜迪新材料有限公司 Watersoluble modified acrylic acid iron oxide red anti-corrosive primer of resistance to greasy dirt and preparation method thereof

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN106366851A (en) * 2016-08-30 2017-02-01 河北晨阳工贸集团有限公司 Epoxy ester dip-coating water based paint and preparation method thereof
CN109135455A (en) * 2018-07-06 2019-01-04 河北晨阳工贸集团有限公司 A kind of aqueous protective paint of high-performance water proof and wearable and preparation method thereof
CN109439090A (en) * 2018-11-02 2019-03-08 河北晨阳工贸集团有限公司 A kind of corrosion-resistant quick dried environment protection water paint and preparation method thereof
CN109777229A (en) * 2019-02-20 2019-05-21 河北晨阳工贸集团有限公司 A kind of acrylic acid protective primer and preparation method thereof
CN110093094A (en) * 2019-04-11 2019-08-06 广州集泰化工股份有限公司 A kind of axle vehicle sedan-chair bottom surface unification aqueous anticorrosion paint and preparation method thereof
CN110499079A (en) * 2019-08-20 2019-11-26 成都拜迪新材料有限公司 Watersoluble modified acrylic acid iron oxide red anti-corrosive primer of resistance to greasy dirt and preparation method thereof

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
于国玲等: "水性丙烯酸涂料光泽的影响因素研究", 《中国涂料》 *

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN112143309A (en) * 2020-09-16 2020-12-29 广州集泰化工股份有限公司 Water-based anti-sticking anticorrosion primer and preparation method and application thereof
WO2022088137A1 (en) * 2020-10-31 2022-05-05 河北比尔尼克新材料科技股份有限公司 Water-based acrylic paint, preparation method therefor and application thereof
CN112662242A (en) * 2020-12-29 2021-04-16 湖南金化科技集团有限公司 Water-based antirust coating for hot-rolled steel pipe and preparation method thereof
CN114163920A (en) * 2021-12-03 2022-03-11 清远威凛材料科技有限公司 Water-based automobile primer and preparation method thereof
CN116592272A (en) * 2023-04-11 2023-08-15 浙江鑫佳硕科技有限公司 Pneumatic system of machine tool
CN117019602A (en) * 2023-06-28 2023-11-10 东风商用车有限公司 Water-based engine paint pretreatment-free coating method for engine
CN119019901A (en) * 2024-09-06 2024-11-26 江阴市荣新塑化有限公司 Weather-resistant water-based car body paint and preparation method thereof
CN119019901B (en) * 2024-09-06 2025-09-26 江阴市荣新塑化有限公司 Weather-resistant water-based vehicle body paint and preparation method thereof

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