CN117417677A

CN117417677A - Water-based moisture-cured cold zinc acid and alkali resistant anticorrosive paint and application thereof

Info

Publication number: CN117417677A
Application number: CN202311587518.5A
Authority: CN
Inventors: 王厚测; 王路民; 张舒
Original assignee: Shijiazhuang Yusha Power Materials Engineering Co ltd
Current assignee: Shijiazhuang Yusha Power Materials Engineering Co ltd
Priority date: 2023-11-27
Filing date: 2023-11-27
Publication date: 2024-01-19

Abstract

The invention relates to the technical field of building coatings, and particularly discloses a water-based moisture-cured cold zinc acid and alkali resistant anticorrosive coating and application thereof. Comprises 50 to 70 parts of modified epoxy-acrylic resin emulsion, 20 to 30 parts of amphiphilic zinc-containing toughening emulsion, 5 to 10 parts of organic anti-corrosion reinforcing liquid, 0.5 to 1 part of carboxylic acid vanillyl alcohol ester extract, 18 to 33 parts of inorganic filler, 11.5 to 26 parts of auxiliary agent and 15 to 40 parts of water. The characteristic of air drying of the unsaturated carboxylic acid modified epoxy resin aqueous emulsion is utilized, and the diffusion, crosslinking and film forming effects are generated under the action of a drier and air, so that the self-curing film forming of the coating in a high humidity environment is ensured; the modified epoxy-acrylic resin emulsion can be embedded into resin, which is beneficial to the dispersion of inorganic filler and improves the comprehensive performance of the coating. The coating is suitable for various metal structures and large building group facilities, is convenient to operate, has small doping amount, has no pollution to the environment, and has higher practical value and popularization value.

Description

Water-based moisture-cured cold zinc acid and alkali resistant anticorrosive paint and application thereof

Technical Field

The invention relates to the technical field of building coatings, in particular to a water-based moisture-cured cold zinc acid and alkali resistant anticorrosive coating and application thereof.

Background

The water-based paint is environment-friendly and safe, and takes water as a solvent or a dispersion medium, and does not contain an organic solvent or a heavy metal compound. The water is used as a dispersion medium, so that the paint is environment-friendly and healthy, is safe to produce and use, and can reduce the production cost of the paint. The existing water-based protective paint used for most buildings or concrete has the problems of difficult construction, low permeability, incapability of curing and forming and the like in a damp-heat environment. Even if the curable water-based paint is coated, pulverization and falling off of a concrete base surface can occur under the long-term etching actions of moisture, damp heat, oxygen, sulfate or chloride ions and the like, so that steel bars are corroded, and even the phenomena of concrete cracking and overall function loss occur. In addition, most of the water-based paint has short service time in acid and alkali environments, has poor adhesion with metal or concrete base surfaces, and is easy to generate the problems of bubbles, bottom biting, stripping and the like. Especially, in building facilities under a high humidity environment, such as a water cooling tower, a large sewage treatment plant pool, an industrial impounding reservoir or a building group in a high humidity service environment, in order to realize coordination and unification among solidification, acid and alkali resistance, high permeability and corrosion resistance in the wet environment, recoating and complicated repair procedures must be performed, so that a great amount of economic loss and personnel waste are caused; in addition, even if the repainting and repair procedures are carried out, the existing water-based paint is difficult to realize the coordination and unification among solidification, acid and alkali resistance, high permeability and corrosion resistance in a wet environment.

Therefore, in order to reduce the corrosion of buildings by corrosive media and to prolong the service life of the buildings, it is highly desirable to find a water-based protective coating for construction facilities, which can be cured and formed under hot and humid conditions and has excellent acid and alkali resistance, permeability, corrosion resistance and the like.

Disclosure of Invention

Aiming at the problems, the invention provides the water-based moisture-curing cold zinc acid and alkali-resistant anticorrosive paint and the application thereof, which remarkably improve the acid and alkali resistance, adhesive force, wet heat resistance, water resistance and salt fog resistance of the water-based paint through the synergistic effect of the raw material components, can realize curing and forming under the high-humidity environment of a humid base surface, improve the durability of building facilities and effectively prevent the corrosion of metal structures and steel bars.

In order to solve the technical problems, the technical scheme provided by the invention is as follows:

an aqueous moisture-cured cold zinc acid and alkali resistant anticorrosive paint comprises the following raw materials in parts by weight: 50-70 parts of modified epoxy-acrylic resin emulsion, 20-30 parts of amphiphilic zinc-containing toughening emulsion, 5-10 parts of organic anti-corrosion reinforcing liquid, 0.5-1 part of carboxylic acid vanillyl alcohol ester extract, 18-33 parts of inorganic filler, 11.5-26 parts of auxiliary agent and 15-40 parts of water; wherein,

The modified epoxy-acrylic resin emulsion comprises the following raw materials in percentage by mass: 33.5 to 52 percent of glycidyl fatty acid-acrylic acid modified epoxy resin emulsion, 17.5 to 31 percent of first emulsifier, 12.5 to 29 percent of acrylic monomer, 4 to 8.5 percent of functional monomer, 1 to 4.5 percent of buffer solution, 1.5 to 6.5 percent of water, 1.5 to 4.5 percent of first initiator and 0.05 to 0.25 percent of first catalyst;

the glycidyl fatty acid-acrylic acid modified epoxy resin emulsion comprises the following raw materials in percentage by mass: 14 to 33.5 percent of glycidyl fatty acid ester, 43 to 66.5 percent of first epoxy resin, 3 to 9.5 percent of acrylic ester, 0.05 to 0.5 percent of second catalyst, 3 to 9.5 percent of isophorone diisocyanate, 2 to 8 percent of water, 4.5 to 10 percent of second emulsifier and 0.1 to 0.5 percent of buffer solution.

Compared with the prior art, the water-based moisture-curing cold zinc acid-base-resistant anticorrosive paint provided by the invention has the advantages that the glycidyl fatty acid ester is used as a diluent to carry out physical modification on epoxy resin, and has excellent acid capturing performance, and when free acid exists in a paint system, the acid can be captured and neutralized through the oxygen atom of the ester chain of the free acid, so that the acid resistance of the paint is improved; the isophorone diisocyanate reacts with hydroxyl in the epoxy group to generate a carbamate chain segment, so that the strength and toughness of the epoxy resin are improved, the acid and alkali resistance and weather resistance of the coating are improved, and in addition, the isocyanate group can also participate in an addition reaction, so that the crosslinking density is further increased; after the first epoxy resin is copolymerized with acrylic ester, isophorone diisocyanate, acrylic monomers and functional monomers, a waterborne epoxy-acrylic resin film forming substance with lower relative molecular mass and stronger permeability and carboxyl, benzene ring, carbamate and polyether chain segments is formed, and the waterborne epoxy-acrylic resin film forming substance contains a hydrophilic structure of flexible chains, polyether and polyester chain segments and a hydrophobic structure of rigid benzene ring, flexible polyether and the like, so that an amphiphilic toughening resin system is formed together. The modified epoxy-acrylic resin emulsion has the characteristic of air drying, and after the coating is formed into a film, unsaturated bonds of the coating can undergo oxidation crosslinking reaction under the action of a drier and oxygen to form a crosslinked network structure, so that the resin can be quickly dried and self-cured into a film in a high humidity environment, and the moisture resistance and the acid-base resistance of the water-based coating are enhanced. The amphiphilic zinc-containing toughening emulsion contains hydrophilic and lipophilic structural groups, and can be used together with other assistants after being copolymerized with epoxy resin, so that inorganic fillers such as zinc powder and the like can be better dispersed, and meanwhile, the coating film-forming resin is endowed with toughness and adhesive force. The modified epoxy-acrylic resin emulsion and the amphiphilic zinc-containing toughening emulsion are favorable for penetrating into capillary pores of a metal structure substrate, form a good wettability structure with the substrate, and form strong adhesive force with concrete, reinforcing steel bars or a protected building of the substrate through diffusion, aggregation and film formation. In addition, the rigid benzene ring and the flexible polyether and other hydrophobic chain segments on the modified epoxy-acrylic resin emulsion can isolate alkali aggregate reaction among concrete acid, alkali and salt components, and prevent pulverization or shedding on a concrete basal plane.

The water-based moisture-cured cold zinc acid and alkali-resistant anticorrosive paint provided by the invention plays a role in air drying of the unsaturated carboxylic acid modified epoxy resin water-based emulsion, utilizes the advantage of high drying speed of the acrylic resin, and after the paint is formed into a film, the resin is subjected to diffusion, crosslinking and film forming under the action of a drier and air, so that the toughness and the water resistance of the paint are improved, the self-curing film forming of the paint in a high humidity environment is ensured, the paint has the advantages of no falling off after long-term use and high-efficiency corrosion resistance, and the service life of a concrete building is effectively prolonged. The modified epoxy-acrylic resin emulsion has high permeability components and hydrophilic structures, can be embedded into resin to form a product with high solid content and low viscosity, is favorable for dispersing inorganic fillers such as zinc powder and the like, and simultaneously increases the weather resistance, corrosion resistance and permeability of the resin. The water-based moisture-curing cold zinc acid-base resistant anticorrosive paint is suitable for the interiors of various facilities of large building groups through the synergistic effect and specific content of the raw material components, is convenient to operate, small in doping amount, safe to use, free of pollution to the environment and high in practical value and popularization value.

Preferably, the glycidyl fatty acid ester is at least one of glycidyl acrylate, glycidyl palmitate, glycidyl linoleate, polypropylene glycol diglycidyl ether diacrylate or triglycidyl isocyanurate.

Preferably, the acrylic ester is at least one of amino polyethylene glycol methacrylate, 2-amino ethyl methacrylate, hydroxypropyl acrylate or hydroxyethyl acrylate.

Preferably, the first epoxy resin is bisphenol a type epoxy resin or bisphenol F type epoxy resin.

Further preferably, the bisphenol a type epoxy resin is at least one of epoxy resin E44, epoxy resin E51, or epoxy resin E20.

Further preferably, the bisphenol F type epoxy resin is at least one of bisphenol F type epoxy resin 830 or bisphenol F type epoxy resin 170.

Preferably, the second catalyst is at least one of N, N-dimethylbenzylamine, dibutyl tin dilaurate, triethylamine, tetramethyl ethylenediamine or boron trifluoride diethyl ether.

Preferably, the second emulsifier is at least one of sorbitan monooleate, coconut oil fatty acid diethanolamide, glycol polyoxyethylene ether or alkylphenol polyoxyethylene.

Preferably, the buffer solution is at least one of ammonia water, potassium bicarbonate water solution, sodium dihydrogen phosphate water solution, disodium hydrogen phosphate water solution, ammonium bicarbonate water solution, sodium carbonate water solution or potassium carbonate water solution.

Preferably, the mass concentration of the buffer solution is 4.5% -5.5%.

Preferably, the preparation method of the glycidyl fatty acid-acrylic acid modified epoxy resin emulsion comprises the following steps:

weighing the raw materials according to the designed proportion, uniformly mixing glycidyl fatty acid ester, first epoxy resin, acrylic ester, second catalyst, isophorone diisocyanate, water and second emulsifier at 80-90 ℃ for polymerization reaction; and adding a buffer solution to adjust to neutrality to obtain the glycidyl fatty acid-acrylic acid modified epoxy resin emulsion.

Further preferably, the polymerization reaction time is 0.5 to 1.5 hours.

The neutral pH is, for example, 6.5 to 7.5.

Further preferably, the epoxy value of the glycidyl fatty acid-acrylic acid modified epoxy resin emulsion is 0.11 to 0.14mol/100g.

The glycidyl fatty acid ester has excellent acid capturing performance, and when free acid exists in a coating system, the acid can be captured and neutralized through oxygen atoms of the ester chain of the free acid, so that the acid resistance of the coating is improved; according to the invention, the diluent glycidyl fatty acid ester is adopted to carry out physical modification on the epoxy resin, so that the viscosity of the resin is improved, and the dispersibility and leveling property of the system are improved. Through ring-opening polymerization of acrylic ester and epoxy resin, unsaturated acrylic ester and isophorone diisocyanate are grafted to the epoxy resin, so that the epoxy resin has unsaturated groups and generates carbamate chain segments with isocyanate groups, thereby being beneficial to improving the weather resistance and acid and alkali resistance of a coating film; the acrylic resin with the reactive functional group is compounded with the epoxy resin, so that the epoxy resin is endowed with the reactivity of free radical polymerization, the structure of the epoxy resin is more suitable for subsequent crosslinking modification, and the flexibility is increased. The invention realizes the physical and chemical double modification of the epoxy resin, and is beneficial to the subsequent crosslinking and polymerization of the epoxy-acrylic resin film-forming substance.

Preferably, the acrylic monomer is at least two of polyethylene glycol monomethyl ether acrylate, 2-hydroxy-3-phenoxypropyl acrylate, isobornyl methacrylate, methacrylamide, furfuryl methacrylate or ethylene glycol dimethacrylate.

The amide group has good alkali resistance and permeability, and the acrylic acid ester has good acid resistance and weather resistance; preferably, each acrylic monomer has unique structural characteristics. According to the invention, more than 2 acrylic monomers are selected, so that the advantages of all monomer groups can be exerted, complementary advantages are formed, the defect of a single monomer is overcome, and the function addition function is realized.

Preferably, the functional monomer is at least two of styrene, dicyclopentadienyloxyethyl methacrylate, (2R) -2-N-fluorenylmethoxycarbonyl amino-2-methyl-6-heptenoic acid, 3, 5-dihydroxy-6-heptenoic acid, 4-pentenoic acid, sodium methacrylate or 2-methyl-2-pentenoic acid.

Preferably, each functional monomer has unique structural characteristics. The invention selects more than 2 functional monomers, can exert the advantages of each monomer group, form advantage complementation, overcome the defect of single monomer and play the role of function addition.

The mixing ratio of two or more components of the acrylic monomer and the functional monomer is not required, and the components may be mixed in any ratio.

Preferably, the first emulsifier is at least one of castor oil polyoxyethylene ether, trihydroxy polyoxypropylene ether, nonylphenol polyoxyethylene ether, laurinol polyoxyethylene ether, cetyl alcohol polyoxyethylene ether or isooctyl alcohol polyoxyethylene ether.

The preferred first emulsifier eliminates the oil-water interfacial tension, thoroughly mixes the water and oil monomers together, ensures uniform dispersion of the reactants to form a uniform modified epoxy microemulsion film forming material, produces a stable aqueous polymer emulsion system, and contributes to the improvement of polymerization efficiency and product quality.

Preferably, the first initiator is at least one of ammonium persulfate aqueous solution, potassium persulfate aqueous solution, azodiisobutyronitrile aqueous solution or diisopropyl peroxydicarbonate aqueous solution.

Preferably, the mass concentration of the first initiator is 0.1% -0.15%.

Preferably, the first catalyst is at least one of ion exchange resin or p-toluenesulfonic acid.

Illustratively, the ion exchange resin comprises a D72 ion exchange resin or a D61 ion exchange resin.

Preferably, the preparation method of the modified epoxy-acrylic resin emulsion comprises the following steps:

step a, weighing all raw materials according to a designed proportion, and dissolving acrylic ester monomers in a first part of buffer solution to obtain an acrylic ester monomer solution;

step b, dissolving the functional monomer in a second part of buffer solution to obtain a functional monomer solution;

step c, uniformly mixing 50-70wt% of the acrylic ester monomer solution, a first emulsifier, glycidyl fatty acid-acrylic acid modified epoxy resin emulsion and water, and simultaneously dropwise adding 50-70wt% of the functional monomer solution and 8-15wt% of a first initiator at 65-75 ℃; simultaneously dripping the rest acrylic ester monomer solution, the functional monomer solution and the first initiator at the temperature of 85-95 ℃ for heat preservation reaction; adding a first catalyst to perform esterification reaction; and adding the rest buffer solution to adjust to neutrality to obtain the modified epoxy-acrylic resin emulsion.

It should be noted that there is no sequence between the step a and the step b.

It is further preferable that the mass ratio of the first part of buffer solution, the second part of buffer solution, and the remaining buffer solution is (60 to 77): 13 to 30): 10.

Further preferably, step c comprises: uniformly mixing 50-70wt% of the acrylic ester monomer solution, a first emulsifier, glycidyl fatty acid-acrylic acid modified epoxy resin emulsion and water, and simultaneously dropwise adding 50-70wt% of the functional monomer solution and 8-15wt% of a first initiator at 65-75 ℃ for 0.3-0.6 h; simultaneously dripping the rest acrylic ester monomer solution, the functional monomer solution and the first initiator at the temperature of 85-95 ℃ for 2-3 h, and carrying out heat preservation reaction for 1-1.5 h; adding a first catalyst to perform esterification reaction for 1 to 1.5 hours; and adding the rest buffer solution to adjust the pH to be between 6 and 7, thus obtaining the modified epoxy-acrylic resin emulsion.

Further preferably, the modified epoxy-acrylic resin emulsion has an epoxy value of 0.11 to 0.14mol/100g.

According to the invention, the glycidyl fatty acid-acrylic acid modified epoxy resin is copolymerized with acrylic monomers and functional monomers to form a polymer long chain containing multiple carboxyl groups, the epoxy groups and the carboxyl groups are subjected to esterification reaction under the action of a first catalyst to form a crosslinked reticular structure, and then a buffer solution is added to neutralize the acid value to generate molecular chains of the resin to form self-emulsifying colloidal particles, so that the subsequent polymerization reaction is facilitated. After the acrylic ester monomer, the functional monomer and the glycidol fatty acid-acrylic acid modified epoxy resin are polymerized, the epoxy resin contains amino, polyether, benzene ring and acrylic emulsion with larger molecular mass, so that the coating is endowed with excellent moisture curing, weather resistance and acid and alkali resistance. In addition, isocyanate groups remained in the glycidyl fatty acid-acrylic acid modified epoxy resin emulsion react with a trace amount of moisture in the air to generate amine, and amine substances can perform ring opening reaction with epoxy groups in the epoxy resin to form a crosslinked structure again, so that the coating film has the effects of moisture curing and toughening.

Preferably, the amphiphilic zinc-containing toughening emulsion comprises the following raw materials in percentage by mass: 2.5 to 9 percent of vegetable linoleic acid, 1 to 4.5 percent of vinyl alkoxy silane, 2.5 to 9 percent of N-methylol acrylamide, 2.5 to 9 percent of 3-methyl heptenoic acid, 1.5 to 7 percent of sodium methacrylate hydroxypropyl sulfonate, 0.05 to 0.3 percent of second initiator, 11 to 25 percent of second epoxy resin, 0.2 to 0.9 percent of aprotic acid solution, 26.5 to 47.5 percent of zinc powder, 1.5 to 4.5 percent of rice bran wax, 2.5 to 9 percent of second emulsifier, 1.5 to 4.5 percent of gamma-glycidyl ether oxypropyl trimethoxy silane, 5.5 to 16.5 percent of water and 2.5 to 9 percent of thickening dispersant.

In the invention, zinc powder is added into the epoxy resin, so that the protective effect can be generated on the substrate, and the electrochemical corrosion of the substrate is avoided; the rice bran wax has the functions of moisture resistance and corrosion resistance, and can be used as an organic flexibilizer and a film forming auxiliary agent to increase the dispersibility of zinc powder in an organic phase, improve the lipophilicity and uniformity of the coating and improve the moisture curing and corrosion resistance of the coating. The vegetable-based linoleic acid has reactive unsaturated bonds, the vinyl alkoxy silane has super-strong chemical stability, rich reactive functional groups and rigid cage-shaped structures, and the vinyl alkoxy silane and N-methylolacrylamide, 3-methyl heptenoic acid and sodium methacrylate are copolymerized to reduce the entanglement of molecular chains and form a hydrophilic and lipophilic toughening resin dispersion system, so that the dispersibility, the strength and the corrosion resistance of the coating are improved; under the action of aprotic acid catalyst, the solution reacts together to further crosslink and polymerize carboxylic acid, sulfonic acid and hydroxyl in the polymer to form an amphiphilic resin dispersion system with high toughness, and the amphiphilic resin dispersion system acts together with a second emulsifier and a silane coupling agent to improve the interfacial tension of organic and inorganic phases, so that zinc powder and rice bran wax are well dispersed in a film forming substance, the compatibility among components of the paint is increased, and the permeability and stability of the paint are maintained. The thickening and dispersing agent can improve the viscosity and the fluidity of the system, improve the leveling property and the consistency, prevent the layering and the precipitation of the amphiphilic zinc-containing toughening emulsion and endow the emulsion with better storage stability.

Preferably, the second epoxy resin is at least one of epoxy resin E44 or epoxy resin E51.

Preferably, the second initiator is at least one of ammonium persulfate aqueous solution, potassium persulfate aqueous solution, benzoyl peroxide aqueous solution or diisopropyl peroxydicarbonate aqueous solution.

Preferably, the mass concentration of the second initiator is 0.1% -0.2%.

Preferably, the aprotic acid solution is boron trifluoride acetic acid complex aqueous solution with the concentration of 0.2-0.6 mol/L.

Preferably, the thickening dispersant is an acrylic acid (ester) based/palm oleyl alcohol polyether-25 acrylate copolymer.

Preferably, the preparation method of the amphiphilic zinc-containing toughening emulsion comprises the following steps:

weighing the raw materials according to the designed proportion, and uniformly mixing part of the second emulsifier, water, plant-based linoleic acid, vinyl alkoxy silane, N-methylol acrylamide, 3-methyl heptenoic acid and sodium methacrylate at the temperature of 70-80 ℃; dripping a second initiator to perform polymerization reaction; adding a second epoxy resin and an aprotic acid solution, and carrying out esterification reaction at 100-120 ℃; zinc powder, rice bran wax, the rest of second emulsifier, gamma-glycidol ether oxypropyl trimethoxy silane and thickening dispersant are added and uniformly mixed to obtain the amphiphilic zinc-containing toughening emulsion.

Further preferably, the second initiator is added dropwise for 1.5 to 2 hours.

Further preferably, the polymerization reaction time is 2 to 3 hours.

Further preferably, the time of the esterification reaction is 3 to 4 hours.

Further preferably, the mass ratio of the part of the second emulsifier to the rest of the second emulsifier is 1 (0.8-1.2).

Illustratively, after zinc powder, rice bran wax, the rest of the second emulsifier and gamma-glycidol ether oxypropyl trimethoxysilane are added, stirring and mixing are carried out at a high speed of 600-1000 rpm for 30-50 min; and adding a thickening dispersant, stirring and mixing at 200-500 rpm for 3-5 min to obtain the amphiphilic zinc-containing toughening emulsion.

Preferably, the organic anti-corrosion reinforcing liquid comprises the following raw materials in percentage by mass: 5.5 to 14.5 percent of 4-aminodiphenylamine, 4.5 to 11.5 percent of 2,2' -disulfonic acid benzidine, 20 to 39 percent of phosphoric acid aqueous solution, 33.5 to 57.5 percent of second initiator, 0.1 to 1.5 percent of 1, 2-benzisothiazolin-3-one, 0.5 to 3 percent of gamma-glycidol ether oxypropyl trimethoxy silane and 4.5 to 11.5 percent of flaky graphite suspension.

Under the catalysis of phosphoric acid, the invention carries out in-situ polymerization on the scaly graphite, 4-aminodiphenylamine and 2,2' -disulfonic acid benzidine to generate aniline polymer-graphite flake composite material; in the presence of a silane coupling agent, the corrosion inhibitor 1, 2-benzisothiazolin-3-one is loaded into the aniline polymer-graphite flake composite material to form an organic anti-corrosion reinforcing component so as to realize isolation of invasion of corrosive medium, and a passivation layer is formed on the surface of metal or reinforcing steel bar, so that corrosion of the metal is effectively prevented.

Preferably, the concentration of the phosphoric acid aqueous solution is 5-8 mol/L.

Preferably, the mass concentration of the flaky graphite suspension is 20% -30%.

Preferably, the preparation method of the organic anti-corrosion reinforcing liquid comprises the following steps:

weighing the raw materials according to the designed proportion, dissolving 4-aminodiphenylamine and 2,2' -disulfonic acid benzidine in phosphoric acid aqueous solution, adding scaly graphite suspension, and uniformly mixing; dripping a third initiator at 0-5 ℃ to perform polymerization reaction; and (3) regulating the pH value to be between 5 and 6, adding 1, 2-benzisothiazolin-3-one and gamma-glycidol ether oxypropyl trimethoxy silane for grafting reaction, filtering, washing and drying to obtain the organic anti-corrosion reinforcing liquid.

Further preferably, the third initiator is added dropwise for 0.5 to 1 hour.

Further preferably, the polymerization reaction time is 1 to 1.5 hours.

The pH of the system is adjusted, for example, by means of liquid alkali or aqueous ammonia.

Further preferably, the time of the grafting reaction is 3 to 4 hours.

The washing temperature is, for example, 0-4 ℃, and the washing is performed for 5-10 min by using water and then absolute ethyl alcohol.

Further preferably, the drying temperature is 40-50 ℃ and the drying time is 1-3 h.

Preferably, the carboxylic acid vanillyl ester is any two of octanoic acid vanillyl ester, vanillyl nonanamide capsaicin, nordihydrocapsaicin or dihydrocapsaicin ester.

Further preferably, the mass ratio of 2 components in the vanillyl carboxylate is 1 (1-4).

The optimized vanillyl carboxylate is a high-permeability corrosion-resistant reinforcing agent, has strong antioxidant activity, can remove oxidation free radicals of polymer chains in the aqueous epoxy resin coating, prevents ageing, pulverization and cracking of the coating, has higher permeability and corrosion resistance, and can effectively prevent corrosion of substrate metals.

Preferably, the inorganic filler comprises the following components in parts by weight: 2-5 parts of calcium polyphosphate aluminum powder, 10-15 parts of quartz powder, 3-8 parts of polyamide wax powder and 3-5 parts of flaky aluminum powder.

Preferably, the auxiliary agent comprises the following components in parts by weight: 3 to 5 parts of dispersing agent, 1 to 2 parts of thickening agent, 3 to 10 parts of quick-drying agent, 1 to 3 parts of leveling agent, 3 to 5 parts of wetting agent and 0.5 to 1 part of defoaming agent.

Further preferably, the dispersant is at least two of 2-4 generation hyperbranched polyamidoamine, 2-4 generation hyperbranched poly (amine) ester, polyisobutylene bissuccinimide, ethylene bisstearamide, polyvinylpyrrolidone or PF152 modified polyacrylate.

The preferred dispersants of the present invention uniformly disperse various inorganic components of a coating in a film-forming emulsion to form a uniform high solids coating system.

More preferably, 2 or more components in the dispersant are mixed in equal mass.

Further preferably, the thickener is at least one of sodium carboxymethyl cellulose, sodium hydroxymethyl cellulose, thickener BLJ-80, thickener TT-935 or sodium hydroxyethyl cellulose.

Further preferably, the quick-drying agent comprises butanediol and pentanediol with the volume ratio of (0.8-1.2) to (0.8-1.2).

Further preferably, the leveling agent is at least one of BNK-LK600 leveling agent, polyester modified polysiloxane or polyoxyethylene ether grafted trisiloxane.

The preferred leveling agent can promote the paint to form a smooth and even coating film in the drying and film forming process, reduce the surface tension between the paint and the substrate, ensure that the paint and the substrate have optimal wettability, reduce the surface defects such as orange peel, roll marks, shrinkage cavities, pits or pinholes and the like after the paint is constructed, and increase the acid and alkali resistance and durability of the paint.

Further preferred, the wetting agent is at least one of dioctyl sodium sulfosuccinate, alkyl benzene sulfonic acid amine, ethoxylated alkyl sodium sulfate, sodium fatty alcohol ether sulfate, sodium lignin sulfonate, PF152 modified polyacrylate polymer, or JH10 wetting agent.

The preferred wetting agent of the present invention wets the mineral, reduces the surface tension of the liquid and the interfacial tension between the solid and the liquid, and allows the emulsion to spread easily and mix uniformly on the solid surface.

Further preferably, the defoamer is a modified polysiloxane copolymer.

More preferably, the modified polysiloxane copolymer comprises at least one of polydimethylsiloxane, polyether modified polysiloxane copolymer, polyether modified trisiloxane, polyethylene oxide modified polytrisiloxane, or polyethylene glycol ester modified polydimethylsiloxane.

Preferably, the water is deionized water.

The invention provides a preparation method of an aqueous moisture-cured cold zinc acid and alkali resistant anticorrosive paint, which comprises the following steps:

s1, weighing raw materials according to a designed proportion, and uniformly mixing modified epoxy-acrylic resin emulsion, vanillyl carboxylate, organic anti-corrosion reinforcing liquid, calcium aluminum polyphosphate, quartz powder and a dispersing agent to obtain a first mixture;

s2, adding an amphiphilic zinc-containing toughening emulsion, flaky aluminum powder, a thickening agent, polyamide wax powder, a quick-drying agent, a leveling agent, a wetting agent and water into the first mixture, and uniformly mixing to obtain a second mixture;

And S3, adding a defoaming agent into the second mixture, and uniformly mixing to obtain the water-based moisture-cured cold zinc acid and alkali-resistant anticorrosive paint.

Preferably, in step S1, the mixing is performed in a stirring state, and the stirring speed is 200-400 rpm, and the stirring time is 10-30 min.

Preferably, in step S2, the mixing is performed in a stirring state, and the stirring speed is 100-200 rpm, and the stirring time is 20-30 min.

Preferably, in step S3, the mixing is performed in a stirring state, and the stirring speed is 500-700 rpm, and the stirring time is 10-30 min.

The invention also provides application of the water-based moisture-cured cold zinc acid and alkali resistant anticorrosive paint in corrosion prevention of metal building facilities.

The water-based moisture-cured cold zinc acid and alkali-resistant anticorrosive paint prepared by the invention belongs to a single-component quick-drying moisture-cured paint, is suitable for various facility protection of large building groups, and can keep excellent long-acting anticorrosive isolation performance of water resistance, acid resistance, alkali resistance, salt resistance and high-concentration organic pollutants in a high-concentration organic wastewater treatment tank and a chemical plant wastewater tank; meanwhile, the method can not generate curing reaction with moisture in the environment, has the characteristics of wide application range, convenient operation, safe use, no pollution to the environment and the like, and is favorable for commercial popularization and industrialized application.

Detailed Description

The present invention will be described in further detail with reference to the following examples in order to make the objects, technical solutions and advantages of the present invention more apparent. It should be understood that the specific embodiments described herein are for purposes of illustration only and are not intended to limit the scope of the invention.

Example 1

The embodiment provides a water-based moisture-curing cold zinc acid and alkali-resistant anticorrosive paint which is prepared from the following raw materials in parts by weight: 50 parts of modified epoxy-acrylic resin emulsion, 20 parts of amphiphilic zinc-containing toughening emulsion, 5 parts of organic anti-corrosion reinforcing liquid, 0.5 part of carboxylic acid vanillyl alcohol ester, 18 parts of inorganic filler, 11.5 parts of auxiliary agent and 15 parts of deionized water. Wherein,

the modified epoxy-acrylic resin emulsion comprises the following raw materials in percentage by mass: 35% of glycidyl fatty acid-acrylic acid modified epoxy resin emulsion, 30% of a first emulsifier, 24% of an acrylic monomer, 4% of a functional monomer, 3% of a buffer solution, 1.9% of deionized water, 2% of a first initiator and 0.1% of a first catalyst.

The glycidyl fatty acid-acrylic acid modified epoxy resin emulsion comprises the following raw materials in percentage by mass: 15% of glycidyl fatty acid ester, 56% of first epoxy resin, 9.3% of acrylic ester, 0.5% of second catalyst, 7% of isophorone diisocyanate, 7.5% of deionized water, 4.5% of second emulsifier and 0.2% of buffer solution.

The amphiphilic zinc-containing toughening emulsion comprises the following raw materials in percentage by mass: 8% of vegetable-based linoleic acid, 1.5% of vinyl alkoxy silane, 3.5% of N-methylolacrylamide, 3.5% of 3-methyl heptenoic acid, 2% of sodium methacrylate hydroxypropyl sulfonate, 0.1% of a second initiator, 24% of a second epoxy resin, 0.3% of an aprotic acid solution, 36% of zinc powder, 4.3% of rice bran wax, 3.5% of a second emulsifier, 4.3% of gamma-glycidyl ether oxypropyl trimethoxy silane, 6% of deionized water and 3% of an acrylic acid (ester) type/palmitoleic alcohol polyether-25 acrylate copolymer.

The organic anti-corrosion reinforcing liquid consists of the following raw materials in percentage by mass: 6% of 4-aminodiphenylamine, 11% of 2,2' -disulfonic acid benzidine, 21% of 5mol/L phosphoric acid aqueous solution, 54.6% of a second initiator, 1.4% of 1, 2-benzisothiazolin-3-one, 1% of gamma-glycidyl ether oxypropyl trimethoxy silane and 5% of a flaky graphite suspension with the mass concentration of 20%.

The inorganic filler consists of the following components in parts by weight: 2 parts of calcium polyphosphate aluminum powder, 10 parts of quartz powder, 3 parts of polyamide wax powder and 3 parts of flaky aluminum powder.

The auxiliary agent consists of the following components in parts by weight: 3 parts of dispersing agent, 1 part of thickening agent, 3 parts of quick-drying agent, 1 part of leveling agent, 3 parts of wetting agent and 0.5 part of defoaming agent.

The preparation method of the water-based moisture-cured cold zinc acid and alkali resistant anticorrosive paint comprises the following steps:

s1, respectively preparing modified epoxy-acrylic resin emulsion, amphiphilic zinc-containing toughening emulsion and organic anti-corrosion reinforcing liquid. Wherein,

(1) The preparation method of the modified epoxy-acrylic resin emulsion comprises the following steps:

step 1, weighing raw materials according to a designed proportion, uniformly mixing glycidyl fatty acid ester, first epoxy resin, acrylic ester, a second catalyst, isophorone diisocyanate, deionized water and a second emulsifier at 80 ℃ for polymerization reaction for 1.5 hours; buffer solution was added to adjust to ph=7.5 to obtain a glycidyl fatty acid-acrylic acid modified epoxy resin emulsion having an epoxy value of 0.11mol/100 g.

And 2, dissolving the acrylic monomer in the first part of buffer solution to obtain an acrylic monomer solution.

And step 3, dissolving the functional monomer into a second part of buffer solution to obtain a functional monomer solution.

Step 4, uniformly mixing 50wt% of acrylic monomer solution, a first emulsifier, glycidyl fatty acid-acrylic acid modified epoxy resin emulsion and deionized water, and simultaneously dropwise adding 50wt% of functional monomer solution and 8wt% of first initiator at 65 ℃ for 0.3h; simultaneously dripping the rest acrylic monomer solution, the functional monomer solution and the first initiator at the temperature of 85 ℃ for 3 hours, and carrying out heat preservation reaction for 1 hour; adding a first catalyst to perform esterification reaction for 1h; the remaining buffer solution was added to adjust to ph=6 to give a modified epoxy-acrylic resin emulsion having an epoxy value of 0.11mol/100 g.

It should be noted that there is no sequence between steps 1 to 3.

The mass ratio of the first part of buffer solution, the second part of buffer solution and the rest of buffer solution is 23:4:3.

(2) The preparation method of the amphiphilic zinc-containing toughening emulsion comprises the following steps:

weighing all the raw materials according to the designed proportion, and uniformly mixing part of the second emulsifier, deionized water, plant-based linoleic acid, vinyl alkoxy silane, N-methylolacrylamide, 3-methyl heptenoic acid and sodium methacrylate hydroxypropyl sulfonate at 70 ℃; dripping a second initiator, and performing polymerization reaction for 2 hours after dripping for 1.5 hours; adding a second epoxy resin and an aprotic acid solution, and carrying out esterification reaction for 4 hours at 100 ℃; naturally cooling to room temperature, adding zinc powder, rice bran wax, the rest of second emulsifier and gamma-glycidoxypropyl trimethoxysilane, stirring at 600rpm at high speed, and mixing for 50min; and then adding acrylic acid (ester) or palm oleyl alcohol polyether-25 acrylic ester copolymer, stirring and mixing for 5min at 200rpm to obtain the amphiphilic zinc-containing toughening emulsion.

The mass ratio of part of the second emulsifier to the rest of the second emulsifier is 1:0.8.

(3) The preparation method of the organic anti-corrosion reinforcing liquid comprises the following steps:

weighing the raw materials according to the designed proportion, dissolving 4-aminodiphenylamine and 2,2' -disulfonic acid benzidine in phosphoric acid aqueous solution, adding a flaky graphite suspension with the mass concentration of 20%, and uniformly mixing; dripping a third initiator at 0 ℃ for 1h, and carrying out polymerization reaction for 1h; ammonia water is used for adjusting pH=5, 1, 2-benzisothiazolin-3-one and gamma-glycidol ether oxypropyl trimethoxy silane are added for grafting reaction for 3 hours, filtration is carried out, water washing is carried out at 0 ℃, absolute ethyl alcohol is used for washing for 5 minutes, and drying is carried out at 40 ℃ for 3 hours, so that the organic anti-corrosion reinforcing liquid is obtained.

S2, weighing the raw materials according to a designed proportion, mixing and stirring the modified epoxy-acrylic resin emulsion, the carboxylic acid vanillyl alcohol ester, the organic anti-corrosion reinforcing liquid, the calcium aluminum polyphosphate, the quartz powder and the dispersing agent at the speed of 200rpm for 30min to obtain a first mixture;

s3, adding the amphiphilic zinc-containing toughening emulsion, the flaky aluminum powder, the thickener, the polyamide wax powder, the quick-drying agent, the flatting agent, the wetting agent and the deionized water into the first mixture, and mixing and stirring at the speed of 100rpm for 30min to obtain a second mixture;

s4, adding the defoaming agent into the second mixture, mixing and stirring at the speed of 500rpm for 30min to obtain the water-based moisture-curing cold zinc acid and alkali resistant anticorrosive paint.

The specific components of the raw materials of example 1 are shown in table 1.

Example 2

The embodiment provides a water-based moisture-curing cold zinc acid and alkali-resistant anticorrosive paint which is prepared from the following raw materials in parts by weight: 55 parts of modified epoxy-acrylic resin emulsion, 22 parts of amphiphilic zinc-containing toughening emulsion, 7 parts of organic anti-corrosion reinforcing liquid, 0.7 part of carboxylic acid vanillyl alcohol ester, 23 parts of inorganic filler, 12.4 parts of auxiliary agent and 20 parts of deionized water. Wherein,

the modified epoxy-acrylic resin emulsion comprises the following raw materials in percentage by mass: 34% of glycidyl fatty acid-acrylic acid modified epoxy resin emulsion, 23% of a first emulsifier, 27% of an acrylic monomer, 8% of a functional monomer, 2% of a buffer solution, 3.8% of deionized water, 2% of a first initiator and 0.2% of a first catalyst.

The glycidyl fatty acid-acrylic acid modified epoxy resin emulsion comprises the following raw materials in percentage by mass: 17% of glycidyl fatty acid ester, 66% of first epoxy resin, 3.5% of acrylic ester, 0.1% of second catalyst, 3.5% of isophorone diisocyanate, 3.5% of deionized water, 6% of second emulsifier and 0.4% of buffer solution.

The amphiphilic zinc-containing toughening emulsion comprises the following raw materials in percentage by mass: 4% of vegetable-based linoleic acid, 1.7% of vinyl alkoxy silane, 8% of N-methylolacrylamide, 3% of 3-methylheptenoic acid, 2.5% of sodium hydroxy-propylmethacrylate, 0.2% of a second initiator, 20% of a second epoxy resin, 0.7% of an aprotic acid solution, 37% of zinc powder, 1.7% of rice bran wax, 4% of a second emulsifier, 1.7% of gamma-glycidyl ether oxypropyl trimethoxysilane, 7% of deionized water and 8.5% of an acrylic/palmitoleic polyether-25 acrylate copolymer.

The organic anti-corrosion reinforcing liquid consists of the following raw materials in percentage by mass: 6.5% of 4-aminodiphenylamine, 8.5% of 2,2' -disulfonic acid benzidine, 21.5% of 6mol/L phosphoric acid aqueous solution, 56% of a second initiator, 0.5% of 1, 2-benzisothiazolin-3-one, 1% of gamma-glycidyl ether oxypropyl trimethoxysilane and 6% of a flaky graphite suspension with the mass concentration of 25%.

The inorganic filler consists of the following components in parts by weight: 3 parts of calcium polyphosphate aluminum powder, 12 parts of quartz powder, 4 parts of polyamide wax powder and 4 parts of flaky aluminum powder.

The auxiliary agent consists of the following components in parts by weight: 4 parts of dispersing agent, 1.2 parts of thickening agent, 5 parts of quick-drying agent, 1.5 parts of leveling agent, 3.5 parts of wetting agent and 0.7 part of defoaming agent.

step 1, weighing raw materials according to a designed proportion, uniformly mixing glycidyl fatty acid ester, first epoxy resin, acrylic ester, a second catalyst, isophorone diisocyanate, deionized water and a second emulsifier at 85 ℃, and carrying out polymerization reaction for 1h; buffer solution was added to adjust to ph=7 to obtain a glycidyl fatty acid-acrylic acid modified epoxy resin emulsion having an epoxy value of 0.12mol/100 g.

Step 4, uniformly mixing 55wt% of acrylic monomer solution, a first emulsifier, glycidyl fatty acid-acrylic acid modified epoxy resin emulsion and deionized water, and simultaneously dropwise adding 55wt% of functional monomer solution and 10wt% of first initiator at 70 ℃ for 0.4h; simultaneously dripping the rest acrylic monomer solution, the functional monomer solution and the first initiator at 90 ℃ for 2.2 hours, and carrying out heat preservation reaction for 1.5 hours; adding a first catalyst to perform esterification reaction for 1.5h; the remaining buffer solution was added to adjust to ph=6.5 to give a modified epoxy-acrylic resin emulsion having an epoxy value of 0.12mol/100 g.

It should be noted that there is no sequence between steps 1 to 3.

The mass ratio of the first part of buffer solution to the second part of buffer solution to the rest of buffer solution is 7:2:1.

weighing all the raw materials according to the designed proportion, and uniformly mixing part of the second emulsifier, deionized water, plant-based linoleic acid, vinyl alkoxy silane, N-methylolacrylamide, 3-methyl heptenoic acid and sodium methacrylate hydroxypropyl sulfonate at 75 ℃; dripping a second initiator, and performing polymerization reaction for 2.5 hours after the dripping is finished for 2 hours; adding a second epoxy resin and an aprotic acid solution, and carrying out esterification reaction for 3.5h at 105 ℃; naturally cooling to room temperature, adding zinc powder, rice bran wax, the rest of second emulsifier and gamma-glycidoxypropyl trimethoxysilane, and stirring and mixing at 650rpm for 45min; and then adding acrylic acid (ester) or palm oleyl alcohol polyether-25 acrylic ester copolymer, stirring and mixing for 4min at 250rpm to obtain the amphiphilic zinc-containing toughening emulsion.

The mass ratio of part of the second emulsifier to the rest of the second emulsifier is 1:1.

weighing the raw materials according to the designed proportion, dissolving 4-aminodiphenylamine and 2,2' -disulfonic acid benzidine in phosphoric acid aqueous solution, adding a flaky graphite suspension with the mass concentration of 25%, and uniformly mixing; dripping a third initiator at 2 ℃ for 1h, and carrying out polymerization reaction for 1h; ammonia water is used for regulating pH value to be 5.5, 1, 2-benzisothiazolin-3-one and gamma-glycidol ether oxypropyl trimethoxy silane are added for grafting reaction for 3.5 hours, filtering is carried out, water washing is carried out at 4 ℃, absolute ethyl alcohol is used for washing for 6 minutes, and drying is carried out at 45 ℃ for 2 hours, so that the organic anti-corrosion reinforcing liquid is obtained.

S2, weighing the raw materials according to a designed proportion, mixing and stirring the modified epoxy-acrylic resin emulsion, the carboxylic acid vanillyl alcohol ester, the organic anti-corrosion reinforcing liquid, the calcium aluminum polyphosphate, the quartz powder and the dispersing agent at the speed of 250rpm for 25min to obtain a first mixture;

s3, adding the amphiphilic zinc-containing toughening emulsion, the flaky aluminum powder, the thickener, the polyamide wax powder, the quick-drying agent, the flatting agent, the wetting agent and the deionized water into the first mixture, and mixing and stirring at the speed of 150rpm for 25min to obtain a second mixture;

S4, adding the defoaming agent into the second mixture, mixing and stirring at the speed of 550rpm for 25min to obtain the water-based moisture-curing cold zinc acid and alkali resistant anticorrosive paint.

The specific components of the raw materials of example 2 are shown in table 1.

Example 3

The embodiment provides a water-based moisture-curing cold zinc acid and alkali-resistant anticorrosive paint which is prepared from the following raw materials in parts by weight: 60 parts of modified epoxy-acrylic resin emulsion, 25 parts of amphiphilic zinc-containing toughening emulsion, 9 parts of organic anti-corrosion reinforcing liquid, 0.8 part of carboxylic acid vanillyl alcohol ester, 25.5 parts of inorganic filler, 17.8 parts of auxiliary agent and 35 parts of deionized water. Wherein,

the modified epoxy-acrylic resin emulsion comprises the following raw materials in percentage by mass: 40% of glycidyl fatty acid-acrylic acid modified epoxy resin emulsion, 24% of a first emulsifier, 20% of an acrylic monomer, 6% of a functional monomer, 2.5% of a buffer solution, 4.5% of deionized water, 2.75% of a first initiator and 0.25% of a first catalyst.

The glycidyl fatty acid-acrylic acid modified epoxy resin emulsion comprises the following raw materials in percentage by mass: 23% of glycidyl fatty acid ester, 53% of first epoxy resin, 6% of acrylic ester, 0.3% of second catalyst, 6.2% of isophorone diisocyanate, 4.5% of deionized water, 6.7% of second emulsifier and 0.3% of buffer solution.

The amphiphilic zinc-containing toughening emulsion comprises the following raw materials in percentage by mass: 5.3% of vegetable-based linoleic acid, 2.5% of vinyl alkoxy silane, 5% of N-methylolacrylamide, 5% of 3-methylheptenoic acid, 3.5% of sodium methacrylate hydroxypropyl sulfonate, 0.15% of a second initiator, 16% of a second epoxy resin, 0.5% of an aprotic acid solution, 35% of zinc powder, 3% of rice bran wax, 5.25% of a second emulsifier, 3% of gamma-glycidyl ether oxypropyl trimethoxysilane, 10.8% of deionized water and 5% of an acrylic acid (ester) type/palmitoleic alcohol polyether-25 acrylate copolymer.

The organic anti-corrosion reinforcing liquid consists of the following raw materials in percentage by mass: 10% of 4-aminodiphenylamine, 8% of 2,2' -disulfonic acid benzidine, 28% of 7mol/L phosphoric acid aqueous solution, 44% of a second initiator, 0.7% of 1, 2-benzisothiazolin-3-one, 1.3% of gamma-glycidyl ether oxypropyl trimethoxysilane and 8% of a flaky graphite suspension with the mass concentration of 28%.

The inorganic filler consists of the following components in parts by weight: 4 parts of calcium polyphosphate aluminum powder, 13 parts of quartz powder, 5 parts of polyamide wax powder and 3.5 parts of flaky aluminum powder.

The auxiliary agent consists of the following components in parts by weight: 3.5 parts of dispersing agent, 1.5 parts of thickening agent, 6 parts of quick-drying agent, 2 parts of leveling agent, 4 parts of wetting agent and 0.8 part of defoaming agent.

step 1, weighing raw materials according to a designed proportion, uniformly mixing glycidyl fatty acid ester, first epoxy resin, acrylic ester, a second catalyst, isophorone diisocyanate, deionized water and a second emulsifier at 90 ℃ for polymerization reaction for 0.5h; buffer solution was added to adjust to ph=6.5 to obtain a glycidyl fatty acid-acrylic acid modified epoxy resin emulsion having an epoxy value of 0.13mol/100 g.

Step 4, uniformly mixing 60wt% of acrylic monomer solution, a first emulsifier, glycidyl fatty acid-acrylic acid modified epoxy resin emulsion and deionized water, and simultaneously dropwise adding 60wt% of functional monomer solution and 15wt% of first initiator at 75 ℃ for 0.5h; simultaneously dripping the rest acrylic monomer solution, the functional monomer solution and the first initiator at 95 ℃ for 2.5 hours, and carrying out heat preservation reaction for 1.2 hours; adding a first catalyst to perform esterification reaction for 1.3 hours; the remaining buffer solution was added to adjust to ph=7 to give a modified epoxy-acrylic resin emulsion having an epoxy value of 0.13mol/100 g.

It should be noted that there is no sequence between steps 1 to 3.

The mass ratio of the first part of buffer solution, the second part of buffer solution and the rest of buffer solution is 173:52:25.

weighing all the raw materials according to the designed proportion, and uniformly mixing part of the second emulsifier, deionized water, plant-based linoleic acid, vinyl alkoxy silane, N-methylolacrylamide, 3-methyl heptenoic acid and sodium methacrylate hydroxypropyl sulfonate at 75 ℃; dripping a second initiator, and performing polymerization reaction for 2 hours after dripping for 1.5 hours; adding a second epoxy resin and an aprotic acid solution, and carrying out esterification reaction for 3.5h at 110 ℃; naturally cooling to room temperature, adding zinc powder, rice bran wax, the rest of second emulsifier and gamma-glycidoxypropyl trimethoxysilane, stirring at 800rpm at high speed, and mixing for 40min; and then adding acrylic acid (ester) or palm oleyl alcohol polyether-25 acrylic ester copolymer, stirring and mixing for 5min at 300rpm to obtain the amphiphilic zinc-containing toughening emulsion.

weighing the raw materials according to the designed proportion, dissolving 4-aminodiphenylamine and 2,2' -disulfonic acid benzidine in phosphoric acid aqueous solution, adding a flaky graphite suspension with the mass concentration of 28%, and uniformly mixing; dripping a third initiator at 3 ℃ for 0.6h, and carrying out polymerization reaction for 1.5h; ammonia water is used for adjusting pH=6, 1, 2-benzisothiazolin-3-one and gamma-glycidol ether oxypropyl trimethoxy silane are added for grafting reaction for 3.8h, filtering is carried out, water washing is carried out at 3 ℃, absolute ethyl alcohol is used for washing for 7min, and drying is carried out at 50 ℃ for 1.5h, so that the organic anti-corrosion reinforcing liquid is obtained.

S2, weighing the raw materials according to a designed proportion, mixing and stirring the modified epoxy-acrylic resin emulsion, the carboxylic acid vanillyl alcohol ester, the organic anti-corrosion reinforcing liquid, the calcium aluminum polyphosphate, the quartz powder and the dispersing agent at the speed of 300rpm for 20min to obtain a first mixture;

s3, adding the amphiphilic zinc-containing toughening emulsion, the flaky aluminum powder, the thickener, the polyamide wax powder, the quick-drying agent, the flatting agent, the wetting agent and the deionized water into the first mixture, and mixing and stirring at the speed of 160rpm for 25min to obtain a second mixture;

s4, adding the defoaming agent into the second mixture, mixing and stirring at the speed of 600rpm for 20min to obtain the water-based moisture-curing cold zinc acid and alkali resistant anticorrosive paint.

The specific components of the raw materials of example 3 are shown in table 1.

Example 4

The embodiment provides a water-based moisture-curing cold zinc acid and alkali-resistant anticorrosive paint which is prepared from the following raw materials in parts by weight: 65 parts of modified epoxy-acrylic resin emulsion, 28 parts of amphiphilic zinc-containing toughening emulsion, 9 parts of organic anti-corrosion reinforcing liquid, 0.9 part of carboxylic acid vanillyl alcohol ester, 29.5 parts of inorganic filler, 23.2 parts of auxiliary agent and 35 parts of deionized water. Wherein,

the modified epoxy-acrylic resin emulsion comprises the following raw materials in percentage by mass: 45% of glycidyl fatty acid-acrylic acid modified epoxy resin emulsion, 22% of a first emulsifier, 14% of an acrylic monomer, 5% of a functional monomer, 4% of a buffer solution, 6% of deionized water, 3.9% of a first initiator and 0.1% of a first catalyst.

The glycidyl fatty acid-acrylic acid modified epoxy resin emulsion comprises the following raw materials in percentage by mass: 22% of glycidyl fatty acid ester, 44% of first epoxy resin, 8.1% of acrylic ester, 0.4% of second catalyst, 9.5% of isophorone diisocyanate, 6% of deionized water, 9.5% of second emulsifier and 0.5% of buffer solution.

The amphiphilic zinc-containing toughening emulsion comprises the following raw materials in percentage by mass: 3.5% of vegetable-based linoleic acid, 2% of vinyl alkoxy silane, 3% of N-methylolacrylamide, 8% of 3-methylheptenoic acid, 3% of sodium methacrylate hydroxypropyl sulfonate, 0.25% of a second initiator, 12% of a second epoxy resin, 0.45% of an aprotic acid solution, 36% of zinc powder, 1.8% of rice bran wax, 8.5% of a second emulsifier, 2% of gamma-glycidyl ether oxypropyl trimethoxysilane, 16% of deionized water and 3.5% of an acrylic/palmitoleic polyether-25 acrylate copolymer.

The organic anti-corrosion reinforcing liquid consists of the following raw materials in percentage by mass: 7% of 4-aminodiphenylamine, 9% of 2,2' -disulfonic acid benzidine, 38% of 7mol/L phosphoric acid aqueous solution, 34% of a second initiator, 1% of 1, 2-benzisothiazolin-3-one, 2% of gamma-glycidoxypropyl trimethoxysilane and 9% of a flaky graphite suspension with the mass concentration of 28%.

The inorganic filler consists of the following components in parts by weight: 4 parts of calcium polyphosphate aluminum powder, 14 parts of quartz powder, 7 parts of polyamide wax powder and 4.5 parts of flaky aluminum powder.

The auxiliary agent consists of the following components in parts by weight: 4.5 parts of dispersing agent, 1.8 parts of thickening agent, 9 parts of quick-drying agent, 2.5 parts of leveling agent, 4.6 parts of wetting agent and 0.8 part of defoaming agent.

step 1, weighing raw materials according to a designed proportion, uniformly mixing glycidyl fatty acid ester, first epoxy resin, acrylic ester, a second catalyst, isophorone diisocyanate, deionized water and a second emulsifier at 90 ℃ for polymerization reaction for 0.8h; buffer solution was added to adjust to ph=7 to obtain a glycidyl fatty acid-acrylic acid modified epoxy resin emulsion having an epoxy value of 0.14mol/100 g.

Step 4, uniformly mixing 68wt% of acrylic monomer solution, a first emulsifier, glycidyl fatty acid-acrylic acid modified epoxy resin emulsion and deionized water, and simultaneously dropwise adding 68wt% of functional monomer solution and 13wt% of first initiator at 72 ℃ for 0.6h; simultaneously dripping the rest acrylic monomer solution, the functional monomer solution and the first initiator at 90 ℃ for 2.8 hours, and carrying out heat preservation reaction for 1.1 hours; adding a first catalyst to perform esterification reaction for 1.1h; the remaining buffer solution was added to adjust to ph=6.5 to give a modified epoxy-acrylic resin emulsion having an epoxy value of 0.14mol/100 g.

It should be noted that there is no sequence between steps 1 to 3.

The mass ratio of the first part of buffer solution, the second part of buffer solution and the rest of buffer solution is 277:83:40.

weighing all the raw materials according to the designed proportion, and uniformly mixing part of the second emulsifier, deionized water, plant-based linoleic acid, vinyl alkoxy silane, N-methylolacrylamide, 3-methyl heptenoic acid and sodium methacrylate hydroxypropyl sulfonate at 78 ℃; dripping a second initiator, and performing polymerization reaction for 2.2 hours after the dripping is finished for 2 hours; adding a second epoxy resin and an aprotic acid solution, and carrying out esterification reaction for 3 hours at 115 ℃; naturally cooling to room temperature, adding zinc powder, rice bran wax, the rest of second emulsifier and gamma-glycidoxypropyl trimethoxysilane, stirring at 900rpm at high speed, and mixing for 45min; then adding acrylic acid (ester)/palm oleyl alcohol polyether-25 acrylic ester copolymer, stirring and mixing for 3min at 400rpm to obtain the amphiphilic zinc-containing toughening emulsion.

The mass ratio of part of the second emulsifier to the rest of the second emulsifier is 1:1.2.

weighing the raw materials according to the designed proportion, dissolving 4-aminodiphenylamine and 2,2' -disulfonic acid benzidine in phosphoric acid aqueous solution, adding a flaky graphite suspension with the mass concentration of 28%, and uniformly mixing; dripping a third initiator at the temperature of 4 ℃ for 0.5h, and carrying out polymerization reaction for 1.5h; ammonia water is used for adjusting pH=6, 1, 2-benzisothiazolin-3-one and gamma-glycidol ether oxypropyl trimethoxy silane are added for grafting reaction for 4 hours, filtration is carried out, water washing is carried out at 4 ℃, absolute ethyl alcohol is used for washing for 8 minutes, and drying is carried out at 50 ℃ for 1 hour, so that the organic anti-corrosion reinforcing liquid is obtained.

s3, adding the amphiphilic zinc-containing toughening emulsion, the flaky aluminum powder, the thickener, the polyamide wax powder, the quick-drying agent, the flatting agent, the wetting agent and the deionized water into the first mixture, and mixing and stirring at the speed of 200rpm for 20min to obtain a second mixture;

S4, adding the defoaming agent into the second mixture, mixing and stirring at the speed of 580rpm for 15min to obtain the water-based moisture-curing cold zinc acid and alkali resistant anticorrosive paint.

The specific components of the raw materials of example 4 are shown in table 1.

Example 5

The embodiment provides a water-based moisture-curing cold zinc acid and alkali-resistant anticorrosive paint which is prepared from the following raw materials in parts by weight: 70 parts of modified epoxy-acrylic resin emulsion, 30 parts of amphiphilic zinc-containing toughening emulsion, 10 parts of organic anti-corrosion reinforcing liquid, 1 part of carboxylic acid vanillyl alcohol ester, 33 parts of inorganic filler, 26 parts of auxiliary agent and 40 parts of deionized water. Wherein,

the modified epoxy-acrylic resin emulsion comprises the following raw materials in percentage by mass: 50% of glycidyl fatty acid-acrylic acid modified epoxy resin emulsion, 19% of a first emulsifier, 18% of an acrylic monomer, 6.5% of a functional monomer, 1.5% of a buffer solution, 2.5% of deionized water, 2.3% of a first initiator and 0.2% of a first catalyst.

The glycidyl fatty acid-acrylic acid modified epoxy resin emulsion comprises the following raw materials in percentage by mass: 33% of glycidyl fatty acid ester, 46% of first epoxy resin, 6.15% of acrylic ester, 0.2% of second catalyst, 7.5% of isophorone diisocyanate, 2% of deionized water, 5% of second emulsifier and 0.15% of buffer solution.

The amphiphilic zinc-containing toughening emulsion comprises the following raw materials in percentage by mass: 3% of vegetable-based linoleic acid, 4% of vinyl alkoxy silane, 4% of N-methylolacrylamide, 5.5% of 3-methyl heptenoic acid, 6.5% of sodium methacrylate hydroxypropyl sulfonate, 0.2% of a second initiator, 13% of a second epoxy resin, 0.8% of an aprotic acid solution, 47% of zinc powder, 2% of rice bran wax, 3% of a second emulsifier, 2% of gamma-glycidyl ether oxypropyl trimethoxysilane, 6% of deionized water and 3% of an acrylic acid (ester) type/palm oleyl polyether-25 acrylate copolymer.

The organic anti-corrosion reinforcing liquid consists of the following raw materials in percentage by mass: 8% of 4-aminodiphenylamine, 10% of 2,2' -disulfonic acid benzidine, 30% of 8mol/L phosphoric acid aqueous solution, 39% of a second initiator, 0.2% of 1, 2-benzisothiazolin-3-one, 2.8% of gamma-glycidyl ether oxypropyl trimethoxy silane and 10% of a flaky graphite suspension with the mass concentration of 30%.

The inorganic filler consists of the following components in parts by weight: 5 parts of calcium polyphosphate aluminum powder, 15 parts of quartz powder, 8 parts of polyamide wax powder and 5 parts of flaky aluminum powder.

The auxiliary agent consists of the following components in parts by weight: 5 parts of dispersing agent, 2 parts of thickening agent, 10 parts of quick-drying agent, 3 parts of leveling agent, 5 parts of wetting agent and 1 part of defoaming agent.

step 1, weighing raw materials according to a designed proportion, uniformly mixing glycidyl fatty acid ester, first epoxy resin, acrylic ester, a second catalyst, isophorone diisocyanate, deionized water and a second emulsifier at 90 ℃ for polymerization reaction for 0.5h; buffer solution was added to adjust to ph=6.5 to obtain a glycidyl fatty acid-acrylic acid modified epoxy resin emulsion having an epoxy value of 0.11mol/100 g.

Step 4, uniformly mixing 70wt% of acrylic monomer solution, a first emulsifier, glycidyl fatty acid-acrylic acid modified epoxy resin emulsion and deionized water, and simultaneously dropwise adding 70wt% of functional monomer solution and 15wt% of first initiator at 75 ℃ for 0.6h; simultaneously dripping the rest acrylic monomer solution, the functional monomer solution and the first initiator at 95 ℃ for 2 hours, and carrying out heat preservation reaction for 1.2 hours; adding a first catalyst to perform esterification reaction for 1.2h; the remaining buffer solution was added to adjust to ph=7 to give a modified epoxy-acrylic resin emulsion having an epoxy value of 0.11mol/100 g.

It should be noted that there is no sequence between steps 1 to 3.

The mass ratio of the first part of buffer solution, the second part of buffer solution and the rest of buffer solution is 92:43:15.

weighing all the raw materials according to the designed proportion, and uniformly mixing part of the second emulsifier, deionized water, plant-based linoleic acid, vinyl alkoxy silane, N-methylolacrylamide, 3-methyl heptenoic acid and sodium methacrylate hydroxypropyl sulfonate at 80 ℃; dripping a second initiator, and performing polymerization reaction for 3 hours after 2 hours of dripping; adding a second epoxy resin and an aprotic acid solution, and carrying out esterification reaction for 3 hours at 120 ℃; naturally cooling to room temperature, adding zinc powder, rice bran wax, the rest of second emulsifier and gamma-glycidoxypropyl trimethoxysilane, stirring at 1000rpm at high speed, and mixing for 30min; then adding acrylic acid (ester)/palm oleyl alcohol polyether-25 acrylic ester copolymer, stirring and mixing for 3min at 500rpm to obtain the amphiphilic zinc-containing toughening emulsion.

weighing the raw materials according to the designed proportion, dissolving 4-aminodiphenylamine and 2,2' -disulfonic acid benzidine in phosphoric acid aqueous solution, adding a flaky graphite suspension with the mass concentration of 30%, and uniformly mixing; dripping a third initiator at 5 ℃ for 0.5h, and carrying out polymerization reaction for 1.5h; ammonia water is used for adjusting pH=6, 1, 2-benzisothiazolin-3-one and gamma-glycidol ether oxypropyl trimethoxy silane are added for grafting reaction for 4 hours, filtration is carried out, water washing is carried out at 2 ℃, absolute ethyl alcohol is used for washing for 10 minutes, and drying is carried out at 50 ℃ for 1 hour, so that the organic anti-corrosion reinforcing liquid is obtained.

S2, weighing the raw materials according to a designed proportion, mixing and stirring the modified epoxy-acrylic resin emulsion, the carboxylic acid vanillyl alcohol ester, the organic anti-corrosion reinforcing liquid, the calcium aluminum polyphosphate, the quartz powder and the dispersing agent at the speed of 400rpm for 10min to obtain a first mixture;

s4, adding the defoaming agent into the second mixture, mixing and stirring at the speed of 700rpm for 10min to obtain the water-based moisture-curing cold zinc acid and alkali resistant anticorrosive paint.

The specific components of the raw materials of example 5 are shown in table 1.

Table 1 examples 1 to 5 specific raw material components of the aqueous moisture-curable cold zinc acid and alkali resistant anticorrosive paint

/>

Comparative example 1

This comparative example provides an aqueous moisture-curable cold zinc acid and base resistant anticorrosive coating similar to example 3, except that the modified epoxy-acrylic resin emulsion was replaced with an equivalent quality SUN-1 modified epoxy resin aqueous emulsion (i.e., a commercially available aqueous acrylic modified epoxy resin emulsion), available from Lv-Jining chemical technologies Co.

The preparation method of the water-based moisture-curable cold zinc acid and alkali resistant anticorrosive paint is the same as that of the example 3 except that self-made modified epoxy-acrylic resin emulsion is not needed, and the details are omitted.

Comparative example 2

This comparative example provides an aqueous moisture-curable cold zinc acid and alkali resistant anticorrosive paint similar to example 3, except that the organic anticorrosive enhancement solution was replaced with a 325 mesh mica iron oxide preservative of equivalent quality, available from new materials of ronaoko chemical industries, ltd.

The preparation method of the water-based moisture-curable cold zinc acid and alkali resistant anticorrosive paint is the same as that of example 3 except that self-made organic anticorrosive reinforcing liquid is not needed, and redundant description is omitted.

Comparative example 3

This comparative example provides an aqueous moisture-curable cold zinc acid and alkali resistant anticorrosive paint similar to example 3, except that the carboxylic acid vanillyl alcohol ester is replaced with a foamless multifunctional corrosion inhibitor DX506 of the same quality, purchased from Jining and chemical industries, inc.

The preparation method of the water-based moisture-curable cold zinc acid and alkali resistant anticorrosive paint is the same as that of example 3, and is not repeated.

Comparative example 4

This comparative example provides an aqueous moisture-curable cold zinc acid and alkali resistant anticorrosive coating similar to example 3 except that the mass fraction of the glycidyl fatty acid-acrylic acid modified epoxy resin emulsion was replaced with 80 parts.

Comparative example 5

This comparative example provides an aqueous moisture-curable cold zinc acid and alkali resistant anticorrosive paint similar to example 3, except that the amphiphilic zinc toughening emulsion was replaced with the universal cold zinc paint of equivalent quality, uni-5, available from henna ohui industrial paint inc.

The preparation method of the water-based moisture-curable cold zinc acid and alkali resistant anticorrosive paint is the same as that of example 3 except that self-made amphiphilic zinc toughening emulsion is not needed, and redundant description is omitted.

Performance testing

Performance tests were performed on the aqueous moisture-curable cold zinc acid and alkali resistant anticorrosive coatings provided in examples 1 to 5 and comparative examples 1 to 5, and the ZD800 epoxy zinc-rich coating (available from the company of the coating company of the double lion, tianjin).

(1) And (3) respectively scraping each coating on the surface of the cold-rolled steel plate by adopting a bar coater to prepare a coating, and visually observing the appearance of the coating after drying at room temperature.

(2) With reference to the standard GB/T9274-1988 "determination of liquid Medium resistance of paints and varnishes", the inner coating film of each paint 180d was tested for its ability to withstand 3.5wt% NaCl solution, 120h of each paint coating film was resistant to 10wt% NaOH solution, 10wt% H solution, respectively ₂ SO ₄ The solution, 10wt% NaCl resistance and water resistance are shown in Table 2.

(3) The flexibility of each coating film was tested with reference to the standard GB/T1731-1993 "film flexibility test", the adhesion of each coating film was tested with reference to the standard GB/T5210-2006 "paint and varnish pull-off method adhesion test", and the wet heat resistance of each coating film was tested with reference to the standard GB/T1740-2007, and the test results are shown in Table 2.

As can be seen from Table 2, the water-based moisture-curing cold zinc acid-base resistant anticorrosive paint provided by the invention has excellent heat and humidity resistance, acid-base resistance and corrosion resistance, can well meet the protection requirements of various facilities on moisture curing, acid-base resistance and corrosion resistance in a high-humidity and high-salinity environment, has acid resistance and alkali resistance far exceeding the national standard, and has obviously improved comprehensive performance compared with the existing water-based anticorrosive paint sold on the market.

In addition, as can be seen from the test results of comparative example 1 and example 3, the acid resistance, alkali resistance, flexibility, adhesive force, heat resistance, water resistance and salt fog resistance of the aqueous moisture-curable cold zinc acid-alkali resistant anticorrosive paint are all obviously reduced by adopting the commercial aqueous acrylic acid modified epoxy resin emulsion to replace the comparative example 1 of the modified epoxy-acrylic resin emulsion provided by the invention, which shows that the modified epoxy-acrylic resin emulsion provided by the invention is a key factor for improving the acid-alkali resistance, adhesive force, heat resistance, water resistance and corrosion resistance of the paint.

From the test results of comparative examples 2 to 3 and example 3, it can be seen that the alkali resistance, salt water resistance and salt fog resistance of the aqueous moisture-curable cold zinc acid and alkali-resistant anticorrosive paint of comparative example 3 after the replacement of the vanillyl carboxylate ester element are significantly reduced; in comparative example 2, the water-based moisture-curable cold zinc acid and alkali resistant anticorrosive paint with the organic anticorrosive reinforcing liquid replaced has reduced acid resistance, hardness, flexibility, water resistance and wet heat resistance. This further shows that the water-based paint with excellent acid resistance, alkali resistance, water resistance and corrosion resistance is obtained through the synergistic effect of the raw material components.

As can be seen from the test results of comparative example 4 and example 3, increasing the content of the glycidyl fatty acid-acrylic acid modified epoxy resin emulsion, instead, resulted in a decrease in the coating properties, which indicates that the present invention provides a water-based coating excellent in overall properties by the specific raw material components and the specific contents.

Table 2 results of the performance test of the combination of the examples, comparative examples and ZD800 epoxy zinc-rich paint

Effect example

According to 1.2-1.5 kg/m ³ The water-based moisture-curable cold zinc acid and alkali-resistant anticorrosive paint and the ZD800 epoxy zinc-rich paint (purchased from Tianjin double lion paint Co., ltd.) provided in examples 1 to 5 and comparative examples 1 to 5 were roll-coated on a concrete test block with a surface water-sprayed and wet, and after the concrete test block was completely cured, the performance index of the coating on the surface of the concrete was tested, and the test results are shown in table 3.

As can be seen from table 3, the concrete test pieces coated with the aqueous moisture-curable cold zinc acid and alkali resistant anticorrosive coatings of examples 1 to 5 have excellent acid resistance, alkali resistance, brine resistance and surface adhesion, and are significantly better than the ZD800 epoxy zinc-rich coating. This shows that the water-based moisture-curing cold zinc acid and alkali-resistant anticorrosive paint provided by the invention can protect concrete from acid, alkali and salt. The water-based moisture-curing cold zinc acid and alkali-resistant anticorrosive paint of comparative examples 1 to 5 has reduced acid resistance, alkali resistance, salt water resistance, surface adhesion and chloride ion permeation resistance, which further shows that the water-based moisture-curing cold zinc acid and alkali-resistant anticorrosive paint of the invention achieves unexpected moisture resistance, moisture curing, acid and alkali resistance and corrosion resistance through the synergistic effect of the components. The test piece obtained by coating the water-based moisture-cured cold zinc acid and alkali-resistant anticorrosive paint provided by the invention on concrete has excellent alkali resistance, acid resistance, surface adhesion, water resistance and corrosion resistance; the water-based moisture-cured cold zinc acid and alkali-resistant anticorrosive paint has obvious moisture resistance and moisture curing characteristics, can effectively protect metal substrates from being corroded under the conditions of high salt, high humidity and high heat, can isolate alkali aggregate reaction among concrete acid, alkali and salt components on a concrete base surface, avoids pulverization and falling off of the concrete base surface, and prolongs the service life of a concrete building.

Table 3 results of the overall performance test of examples, comparative examples and ZD800 epoxy zinc-rich paint applied to concrete surfaces

In conclusion, the water-based moisture-curing cold zinc acid-base-resistant anticorrosive paint provided by the invention remarkably improves the acid resistance, alkali resistance, flexibility, adhesive force, moisture and heat resistance, water resistance and salt fog resistance of the existing water-based paint through the synergistic effect among the components of the modified epoxy-acrylic resin emulsion, the amphiphilic zinc-containing toughening emulsion, the carboxylic vanillyl alcohol ester essence, the organic anti-corrosion reinforcing liquid and the like, can be subjected to one-time film-forming curing, overcomes the bottleneck problem that the existing paint cannot achieve moisture environment curing, acid and alkali resistance, high permeability and corrosion resistance in a coordinated and unified manner, realizes curing under a humid base surface high-humidity environment, and has important significance in preventing structural damage of building groups and maintaining durability of building facilities.

The foregoing description of the preferred embodiments of the invention is not intended to be limiting, but rather is intended to cover all modifications, equivalents, or alternatives falling within the spirit and principles of the invention.

Claims

1. The water-based moisture-cured cold zinc acid and alkali resistant anticorrosive paint is characterized by comprising the following raw materials in parts by weight: 50-70 parts of modified epoxy-acrylic resin emulsion, 20-30 parts of amphiphilic zinc-containing toughening emulsion, 5-10 parts of organic anti-corrosion reinforcing liquid, 0.5-1 part of carboxylic acid vanillyl alcohol ester extract, 18-33 parts of inorganic filler, 11.5-26 parts of auxiliary agent and 15-40 parts of water; wherein,

2. The aqueous moisture-curable cold zinc acid and alkali resistant anticorrosive coating according to claim 1, wherein the glycidyl fatty acid ester is at least one of glycidyl acrylate, glycidyl palmitate, glycidyl linoleate, polypropylene glycol diglycidyl ether diacrylate or triglycidyl isocyanurate; and/or

The acrylic ester is at least one of amino polyethylene glycol methacrylate, 2-amino ethyl methacrylate, hydroxypropyl acrylate or hydroxyethyl acrylate; and/or

The acrylic monomer is at least two of polyethylene glycol monomethyl ether acrylate, 2-hydroxy-3-phenoxypropyl acrylate, isobornyl methacrylate, methacrylamide, furfuryl methacrylate or ethylene glycol dimethacrylate; and/or

The functional monomer is at least two of styrene, dicyclopentadienyloxyethyl methacrylate, (2R) -2-N-fluorenylmethoxycarbonyl amino-2-methyl-6-heptenoic acid, 3, 5-dihydroxy-6-heptenoic acid, 4-pentenoic acid, sodium methacrylate or 2-methyl-2-pentenoic acid; and/or

The first epoxy resin is bisphenol A type epoxy resin or bisphenol F type epoxy resin; and/or

The first catalyst is at least one of ion exchange resin or p-toluenesulfonic acid; and/or

The second catalyst is at least one of N, N-dimethylbenzylamine, dibutyl tin dilaurate, triethylamine, tetramethyl ethylenediamine or boron trifluoride diethyl ether; and/or

The first emulsifier is at least one of castor oil polyoxyethylene ether, trihydroxy polyoxypropylene ether, nonylphenol polyoxyethylene ether, laurinol polyoxyethylene ether, cetyl alcohol polyoxyethylene ether or isooctyl alcohol polyoxyethylene ether; and/or

The second emulsifier is at least one of sorbitan monooleate, coconut oil fatty acid diethanolamide, glycol polyoxyethylene ether or alkylphenol polyoxyethylene; and/or

The buffer solution is at least one of ammonia water, potassium bicarbonate water solution, sodium dihydrogen phosphate water solution, disodium hydrogen phosphate water solution, ammonium bicarbonate water solution, sodium carbonate water solution or potassium carbonate water solution with the mass concentration of 4.5-5.5%; and/or

The first initiator is at least one of ammonium persulfate aqueous solution, potassium persulfate aqueous solution, azodiisobutyronitrile aqueous solution or diisopropyl peroxydicarbonate aqueous solution with the mass concentration of 0.1-0.15%; and/or

The epoxy value of the modified epoxy-acrylic resin emulsion is 0.11-0.14 mol/100g; and/or

The carboxylic acid vanillyl ester is any two of octanoic acid vanillyl ester, vanillyl nonanamide capsaicin, nordihydrocapsaicin or dihydrocapsaicin ester; and/or

The inorganic filler comprises the following components in parts by weight: 2-5 parts of calcium polyphosphate aluminum powder, 10-15 parts of quartz powder, 3-8 parts of polyamide wax powder and 3-5 parts of flaky aluminum powder; and/or

The auxiliary agent comprises the following components in parts by weight: 3 to 5 parts of dispersing agent, 1 to 2 parts of thickening agent, 3 to 10 parts of quick-drying agent, 1 to 3 parts of leveling agent, 3 to 5 parts of wetting agent and 0.5 to 1 part of defoaming agent.

3. The aqueous moisture-curable cold zinc acid and alkali resistant anticorrosive paint as claimed in claim 1, wherein the preparation method of the modified epoxy-acrylic resin emulsion comprises the following steps:

step 1, weighing raw materials according to a designed proportion, uniformly mixing glycidyl fatty acid ester, first epoxy resin, acrylic ester, second catalyst, isophorone diisocyanate and second emulsifier at 80-90 ℃ for polymerization reaction; adding a buffer solution to adjust to neutrality to obtain glycidyl fatty acid-acrylic acid modified epoxy resin emulsion;

step 2, dissolving acrylic ester monomers in a first part of buffer solution to obtain an acrylic ester monomer solution;

step 3, dissolving the functional monomer into a second part of buffer solution to obtain a functional monomer solution;

step 4, uniformly mixing 50-70wt% of the acrylic ester monomer solution, a first emulsifier, the glycidyl fatty acid-acrylic acid modified epoxy resin emulsion and water, and simultaneously dropwise adding 50-70wt% of the functional monomer solution and 8-15wt% of a first initiator at 65-75 ℃; simultaneously dripping the rest acrylic ester monomer solution, the functional monomer solution and the first initiator at the temperature of 85-95 ℃ for heat preservation reaction; adding a first catalyst to perform esterification reaction; and adding the rest buffer solution to adjust to neutrality to obtain the modified epoxy-acrylic resin emulsion.

4. The water-based moisture-curable cold zinc acid and alkali resistant anticorrosive paint as claimed in claim 1, wherein the amphiphilic zinc-containing toughening emulsion comprises the following raw materials in percentage by mass: 2.5 to 9 percent of vegetable linoleic acid, 1 to 4.5 percent of vinyl alkoxy silane, 2.5 to 9 percent of N-methylol acrylamide, 2.5 to 9 percent of 3-methyl heptenoic acid, 1.5 to 7 percent of sodium methacrylate hydroxypropyl sulfonate, 0.05 to 0.3 percent of second initiator, 11 to 25 percent of second epoxy resin, 0.2 to 0.9 percent of aprotic acid solution, 26.5 to 47.5 percent of zinc powder, 1.5 to 4.5 percent of rice bran wax, 2.5 to 9 percent of second emulsifier, 1.5 to 4.5 percent of gamma-glycidyl ether oxypropyl trimethoxy silane, 5.5 to 16.5 percent of water and 2.5 to 9 percent of thickening dispersant.

5. The aqueous moisture-curable cold zinc acid and alkali resistant anticorrosive coating according to claim 4, wherein the second epoxy resin is at least one of epoxy resin E44 or epoxy resin E51; and/or

The second initiator is at least one of ammonium persulfate aqueous solution, potassium persulfate aqueous solution, benzoyl peroxide aqueous solution or diisopropyl peroxydicarbonate aqueous solution with the mass concentration of 0.1-0.2%; and/or

The aprotic acid solution is boron trifluoride acetic acid complex aqueous solution with the concentration of 0.2-0.6 mol/L; and/or

The thickening dispersant is acrylic acid (ester)/palm oleyl alcohol polyether-25 acrylic ester copolymer.

6. The aqueous moisture-curable cold zinc acid and alkali resistant anticorrosive paint as claimed in claim 4 or 5, wherein the preparation method of the amphiphilic zinc toughening emulsion comprises the following steps:

7. The aqueous moisture-curable cold zinc acid and alkali resistant anticorrosive paint as claimed in claim 1, wherein the organic anticorrosive reinforcing liquid comprises the following raw materials in percentage by mass: 5.5 to 14.5 percent of 4-aminodiphenylamine, 4.5 to 11.5 percent of 2,2' -disulfonic acid benzidine, 20 to 39 percent of phosphoric acid aqueous solution, 33.5 to 57.5 percent of second initiator, 0.1 to 1.5 percent of 1, 2-benzisothiazolin-3-one, 0.5 to 3 percent of gamma-glycidol ether oxypropyl trimethoxy silane and 4.5 to 11.5 percent of flaky graphite suspension.

8. The aqueous moisture-curable cold zinc acid and alkali resistant anticorrosive paint according to claim 7, wherein the concentration of the phosphoric acid aqueous solution is 5-8 mol/L; and/or

The mass concentration of the flaky graphite suspension is 20% -30%.

9. The aqueous moisture-curable cold zinc acid and alkali resistant anticorrosive paint as claimed in claim 7 or 8, wherein the preparation method of the organic anticorrosive reinforcing liquid comprises the following steps:

10. Use of the aqueous moisture-curable cold zinc acid and alkali resistant anticorrosive paint according to any one of claims 1 to 9 in the corrosion protection of metal building facilities.