阅读说明：本技术 一种氯醚共混橡塑乳液防腐涂料的生产工艺 (Production process of epichlorohydrin blended rubber-plastic emulsion anticorrosive paint ) 是由 王保军 拾振洪 李海洋 金传亮 回留柱 王家振 于 2021-09-14 设计创作，主要内容包括：本发明公开了一种氯醚共混橡塑乳液防腐涂料及其生产工艺,本发明属于防腐涂料技术领域,本发明利用共混橡塑热固化反应形成,或将漆料单独作为粉末涂料喷涂使用,将固化胶液均匀喷淋在漆料表面,用压辊辊覆碾平均匀成膜热固化即得,具有很好的耐候性能、耐紫外线、耐水、可与水性环氧或丙烯酸底漆、中涂漆相配套,防腐蚀性优良,保光保色性优良,保持共聚氯醚橡胶的耐油、耐老化、耐臭氧等性能同时还兼有提高耐寒性,降低压缩变形、抑制热老化变软的能力,在钢材、混凝土等基材的表面具有出色的附着力,并且以水作为溶剂,可极大的提高涂料在储存、运输和施工过程中的安全性,可应用于建筑装饰、汽车、船舶和、铁路、航空、桥梁及木器涂装等。(The invention discloses a epichlorohydrin blended rubber-plastic emulsion anticorrosive paint and a production process thereof, belonging to the technical field of anticorrosive paint, the anticorrosive paint is formed by utilizing the thermosetting reaction of blended rubber-plastic, or paint is independently used as powder paint for spraying, cured glue solution is uniformly sprayed on the surface of the paint, and the paint is obtained by using a compression roller to cover, flatten, uniformly form a film and thermally cure the paint, has good weather resistance, ultraviolet resistance and water resistance, can be matched with water-based epoxy or acrylic primer and intermediate coating paint, has good corrosion resistance and good gloss and color retention, maintains the performances of chlorinated polyether copolymer rubber, such as oil resistance, aging resistance, ozone resistance and the like, simultaneously improves cold resistance, reduces compression deformation and inhibits the capability of thermal aging and softening, has excellent adhesive force on the surfaces of base materials, such as steel, concrete and the like, and takes water as a solvent, can greatly improve the safety of the paint in the processes of storage, transportation and construction, can be applied to architectural decoration, automobile, ship, railway, aviation, bridge and woodware coating, etc.)

1. The epichlorohydrin-blended rubber-plastic emulsion anticorrosive paint is characterized by comprising an independently-packaged paint and an independently-packaged cured glue solution, wherein the paint is formed by mixing and stirring the paint and the cured glue solution before use and then performing a thermal curing reaction, and the mixing ratio of the independently-packaged paint to the independently-packaged cured glue solution is as follows: mixing the curing glue solution and the paint in a weight ratio of 9: 6-7 for use; or independently spraying the paint as powder paint, uniformly spraying the curing glue solution on the surface of the paint according to the weight ratio of the curing glue solution to the paint of 9: 6-7, rolling by using a compression roller, uniformly forming a film, and thermally curing to obtain the coating.

2. The epichlorohydrin blended rubber-plastic emulsion anticorrosive paint according to claim 1, characterized in that the production process comprises the following steps: a. preparing a composite emulsifier, namely fixing a reaction kettle filled with a cross-linking agent and sodium diisobutyl sulfosuccinate in a constant-temperature water bath kettle, controlling the temperature to be 65-70 ℃, slowly stirring the mixture by using a stirrer until the mixture is completely dissolved, then increasing the rotating speed to 300r/min, slowly adding sodium dodecyl benzene sulfonate with a proportional amount, and dispersing the mixture for 30-40 min to obtain the composite emulsifier; b. placing a epichlorohydrin rubber solution with viscosity of 15.00-28.00 Pa.s and mass fraction of 48% and a beaker of a composite emulsifier in a constant-temperature water bath pot for heating, stirring at the rotating speed of 1000-1200 rpm after all solid emulsifiers in a reaction kettle are melted until the epichlorohydrin rubber and the emulsifier are uniformly mixed, dropwise adding distilled water at 60 ℃ until phase inversion occurs, and then adding water until the solid content is 28-35%, wherein the mass fraction of the emulsifier is 9%, the mass fraction of sodium dodecyl benzene sulfonate, the sodium diisobutyl sulfosuccinate and the cross-linking agent is = 4: 7: 1, the rotating speed is 500-600 r/min, and obtaining epichlorohydrin rubber emulsion at 65 ℃; c. polymerization of paint: polymerizing methyl methacrylate and butyl acrylate into particles according to the mass ratio of 40/60 by an emulsion polymerization method, adding 5% of ethylene dimethacrylate, adding 100 parts of waterborne epoxy resin and 3-4 parts of DMP-30 by mass, and drying and crushing at room temperature to obtain an acrylic copolymer/epoxy resin powder paint; d. grinding and stirring: and (c) transferring 15-20 parts by weight of the epichlorohydrin rubber emulsion obtained in the step (c), 1-3 parts by weight of a catalyst and 8-12 parts by weight of a filler to a three-roll grinder, heating to 75-85 ℃, and grinding for 5-10 min to obtain a cured glue solution, so as to obtain the epichlorohydrin blended rubber and plastic emulsion anticorrosive paint.

3. The epichlorohydrin-blended rubber-plastic emulsion anticorrosive paint according to claim 1, wherein the thermal curing is completed after 2 to 3 days at room temperature or 30 to 50 minutes under the steam pressure of 0.5 to 0.65 MPa.

4. The process for producing a chlorinated polyether blended rubber and plastic emulsion anticorrosive paint according to claim 1, wherein the crosslinking agent in step b is a mixture of triethylenetetramine, hexamethylenediamine carbamate and trimethylthiourea in a weight ratio of 2: 1.

5. The process for preparing anticorrosive paint of chlorinated polyether blended rubber-plastic emulsion as claimed in claim 1, wherein the chlorinated polyether rubber solution in step c is solvent selected from tetrahydrofuran, chloroform, cyclohexanone, nitrobenzene, dichloroethane and dimethylformamide.

6. The production process of the epichlorohydrin blended rubber and plastic emulsion anticorrosive paint according to claim 1, wherein the filler in the step d is one of titanium white, lithopone, barite powder and wollastonite powder.

7. The production process of the epichlorohydrin-blended rubber-plastic emulsion anticorrosive paint according to claim 1, wherein the waterborne epoxy resin is self-emulsifying polyether amine modified bisphenol A waterborne epoxy resin.

Technical Field

The invention belongs to the technical field of chemical coatings, and particularly relates to a production process of a epichlorohydrin blended rubber-plastic emulsion anticorrosive coating.

Background

Epichlorohydrin rubber is a name for chlorinated polyether rubber, which refers to polyether rubber with chloromethyl on the chain, and is conventionally called chlorohydrin rubber in the past. The comprehensive performance is excellent, and the development prospect is good. Epichlorohydrin rubber is developed and put on the market in the middle of the 60 th 20 th century by the United states, and in Japan and Soviet Union, the epichlorohydrin rubber is also successively developed and developed in the near future, and the epichlorohydrin rubber is industrialized in the United states and Japan and is widely used. The development and application of the epichlorohydrin rubber in China are greatly different from those in foreign countries, polymer blends are of various types, and rubber-plastic blending refers to the blending of plastics and plastics or the blending of rubber and the blending of rubber in plastics. Such polymer blend systems are often referred to in the industry as polymer alloys or rubber-plastic alloys. This chapter mainly introduces rubber-plastic alloy materials with rubber and plastic as main bodies. In polymer blends, a combination of rubber, plastic and synthetic resin is frequently studied, and the combination of rubber and plastic can achieve the purpose of compensating the defects of rubber, plastic has high elasticity, and plastic has high strength and is easy to mold and process, so that the rubber can be reinforced by the plastic, and the plastic can be toughened by the rubber. However, in the technical field of coatings, rubber and plastic blending is hardly involved, and the melt blending of rubber and plastic blending cannot be applied to coatings or emulsion coatings. Therefore, corresponding products of the epichlorohydrin blended rubber-plastic emulsion coating and related technologies are available in the market at present. The interpenetrating network anticorrosive paint is a new anticorrosive series paint, and is also an interpenetrating network polymer which is formed by mutually penetrating rubber network and plastic network and can produce the same effect, also called 'high-molecular alloy'. The development of modern society makes all trades have great progress, and high-tech products emerge endlessly, provide great convenience for people's life. In recent years, with the increasing shortage of petroleum resources and the continuous improvement of environmental awareness of people, the coating industry has been slowly developed towards the direction of environmental protection and energy conservation, various novel materials are rapidly popularized and applied, especially, the high-solid coating, the solvent-free coating, the water-based coating and the like which are combined with modern high technology become the main contents of coating development, and in a plurality of coatings, the water-based material is widely researched and popularized in the coating field by virtue of the advantage of safety thereof, and becomes the industrial lead focus. The current chlorinated polyether anticorrosive paint on the market refers to a copolymer resin of chloroethylene (75%) -vinyl isobutyl ether (25%), and is usually a single-component room temperature quick-drying paint used for galvanized steel plates, aluminum alloys, road signs and the like. For example, CN107177293A discloses a chlorinated polyether polyaniline anticorrosive paint and a preparation method thereof. In order to ensure the beauty and prevent corrosion, a large amount of paint is needed for beautification, people need to experience more safely, environmental protection is needed, the environment-friendly paint has wider application aiming at the disadvantages of inconvenient construction, higher viscosity, more organic solvents and the like of the traditional industrial paint, the traditional material needs to be dried for a long time during paint construction, the organic solvent can volatilize in the link, the resource is wasted, the environment is polluted, unsafe factors are more, the risk probability of fire hazard is quite high, the harm is caused to the bodies of construction and users, the water-based paint completely replaces solvent-based products, the water-based paint is specially used in ship painting engineering construction, the popularization and the use are very important for future development, most of products in the current market are water-based chlorosulfonated polyethylene anticorrosive paint and water-based epichlorohydrin anticorrosive paint, the water-based cyclic vinyl ester anticorrosive paint has the advantages of poor weather resistance, easy pulverization, poor medium energy for bearing strong corrosion at high temperature, poor impact resistance and excellent performance, is mainly applied to the industries of large-scale national defense underground engineering, tunnel engineering, subway engineering, petrochemical industry, traffic and ship manufacturing, and is used as a protective coating material for nonmetal, metal structures, buildings, equipment and the like. The technical personnel in the field need to develop a preparation method of a production process of a epichlorohydrin blended rubber and plastic emulsion anticorrosive paint so as to meet the existing use requirements and market requirements.

Disclosure of Invention

Aiming at the problems, the invention aims to provide a production process of a epichlorohydrin blended rubber and plastic emulsion anticorrosive paint.

The invention is realized by the following technical scheme:

the epichlorohydrin-blended rubber and plastic emulsion anticorrosive paint comprises an independently-packaged paint and an independently-packaged cured glue solution, wherein the paint is formed by mixing and stirring the paint and the cured glue solution before use and then performing a thermal curing reaction, and the mixing ratio of the independently-packaged paint to the independently-packaged cured glue solution is as follows: mixing the curing glue solution and the paint in a weight ratio of 9: 6-7 for use; or independently spraying the paint as powder paint, uniformly spraying the curing glue solution on the surface of the paint according to the weight ratio of the curing glue solution to the paint of 9: 6-7, rolling by using a compression roller, uniformly forming a film, and thermally curing to obtain the coating.

The production process of the epichlorohydrin blended rubber and plastic emulsion anticorrosive paint comprises the following steps: a. preparing a composite emulsifier, namely fixing a reaction kettle filled with a cross-linking agent and sodium diisobutyl sulfosuccinate in a constant-temperature water bath kettle, controlling the temperature to be 65-70 ℃, slowly stirring the mixture by using a stirrer until the mixture is completely dissolved, then increasing the rotating speed to 300r/min, slowly adding sodium dodecyl benzene sulfonate with a proportional amount, and dispersing the mixture for 30-40 min to obtain the composite emulsifier; b. placing a epichlorohydrin rubber solution with viscosity of 15.00-28.00 Pa.s and mass fraction of 48% and a beaker of a composite emulsifier in a constant-temperature water bath pot for heating, stirring at the rotating speed of 1000-1200 rpm after all solid emulsifiers in a reaction kettle are melted until the epichlorohydrin rubber and the emulsifier are uniformly mixed, dropwise adding distilled water at 60 ℃ until phase inversion occurs, and then adding water until the solid content is 28-35%, wherein the mass fraction of the emulsifier is 9%, the mass fraction of sodium dodecyl benzene sulfonate, the sodium diisobutyl sulfosuccinate and the cross-linking agent is = 4: 7: 1, the rotating speed is 500-600 r/min, and obtaining epichlorohydrin rubber emulsion at 65 ℃;

the emulsifier system is compatible when the epichlorohydrin elastomer latex is blended with an acrylic/epoxy dispersion. The elastomer and the water-based resin can not be coagulated and can not cause coagulation and caking.

c. Polymerization of paint: polymerizing methyl methacrylate and butyl acrylate into particles according to the mass ratio of 40/60 by an emulsion polymerization method, adding 5% of ethylene dimethacrylate, adding 100 parts of waterborne epoxy resin and 3-4 parts of DMP-30 by mass, and drying and crushing at room temperature to obtain an acrylic copolymer/epoxy resin powder paint; d. grinding and stirring: and (c) transferring 15-20 parts by weight of the epichlorohydrin rubber emulsion obtained in the step (c), 1-3 parts by weight of a catalyst and 8-12 parts by weight of a filler to a three-roll grinder, heating to 75-85 ℃, and grinding for 5-10 min to obtain a cured glue solution, so as to obtain the epichlorohydrin blended rubber and plastic emulsion anticorrosive paint.

Further, the thermal curing can be completed after 2 to 3 days at room temperature or can be performed for 30 to 50 minutes under the condition that the steam pressure is 0.5 to 0.65 MPa.

The epichlorohydrin rubber can not be vulcanized by sulfur, but is crosslinked by utilizing the thermal reactivity of side chain chloromethyl, and thiourea, polyamine, amine and sulfur vulcanization systems and the like are generally adopted;

further, the cross-linking agent of the step b is a mixture of triethylene tetramine, hexamethylene diamine carbamate and trimethyl thiourea in a weight ratio of 2: 1.

Since a crosslinking agent such as triethylenetetramine contains active hydrogen atoms on amino groups and epoxy groups in the molecular structure of an epoxy resin, the epoxy resin can be cured into a three-dimensionally crosslinked network structure.

Epichlorohydrin rubbers cannot use the usual sulfur vulcanization systems. The conventional crosslinking system for the epichlorohydrin rubber must contain both an acid acceptor (acid acceptor) and a vulcanizing agent. The acid acceptor has the functions of neutralizing halogen acid matters separated out from the epichlorohydrin rubber in the vulcanization process, promoting the vulcanization process, improving the crosslinking density and ensuring that the vulcanized rubber has better thermal stability.

The acid-absorbing agent is selected from lead tetraoxide, dibasic lead phosphite, other lead salts, magnesium oxide, zinc oxide, and calcium oxide. The compound using lead compound has excellent heat resistance and water resistance, but can be used only for dark products.

Further, the solvent of the epichlorohydrin rubber solution in the step c is one of tetrahydrofuran, chloroform, cyclohexanone, nitrobenzene, dichloroethane and dimethylformamide.

Further, the filler in the step d is one of titanium white, lithopone, barite powder and wollastonite powder.

Waterborne epoxy resins generally refer to stable dispersions of epoxy resins in the form of fine particles colloidally dispersed in an aqueous phase.

Further, the waterborne epoxy resin is self-emulsifying polyether amine modified bisphenol A waterborne epoxy resin.

Proper compatibility and stability allows for the production of a blend of epichlorohydrin elastomer-acrylic/epoxy resin, which is well mixed with the epichlorohydrin elastomer during application.

The invention has the beneficial effects that:

firstly, the inherent defect that the epichlorohydrin rubber must be separated from acidic substances during crosslinking is utilized, the disadvantages are converted into advantages, and the aliphatic epoxy group and the polyamide group form a crosslinking bond to form a film in the presence of an acid catalyst in the acid catalysis acrylic copolymer/epoxy crosslinking epichlorohydrin blended rubber-plastic emulsion anticorrosive paint. The acrylic resin has high volatility and drying property at room temperature and excellent physical and mechanical performance, and the crosslinking agent of triethylenetetramine contains active hydrogen atom in amino and epoxy radical in the molecular structure of epoxy resin, so that the epoxy resin may be solidified into stereo crosslinked network structure and may be condensed to form film. The epoxy resin film can be crosslinked with other active group resin containing hydroxyl to form a film, a pure epoxy resin film is excessively hard and brittle, and has poor adhesion, but a coating film with high hardness, high gloss, quick drying, acid and alkali resistance and good water resistance can be prepared after the epoxy resin film is matched with acrylate. The acidic substance precipitated from the ether rubber is used as a catalyst for catalyzing acrylic copolymer/epoxy crosslinking by weak acid, the acrylic emulsion is demulsified due to over strong acidity, the curing reaction is carried out very slowly due to over weak acidity, the construction requirement cannot be met, and the acid-catalyzed curing coating is hard and bright and has good water resistance and wear resistance. The influence of the pigment and the filler is that the water-based porcelain glaze is an acidic acrylic acid amino crosslinking curing system, and the pH value of the original system is not changed by adding the titanium white, the lithopone and the barite powder wollastonite powder filler.

Compared with the prior art, the invention has the following advantages:

the epichlorohydrin blended rubber-plastic emulsion anticorrosive paint disclosed by the invention has good weather resistance, ultraviolet resistance, water resistance and no yellowing, can be matched with water-based epoxy or acrylic primer and intermediate coating, and can also be used on a solvent-based coating to form a composite paint system; excellent corrosion resistance, excellent light and color retention, non-inflammability and safety. The rubber not only maintains the performances of oil resistance, aging resistance, ozone resistance and the like of the epichlorohydrin copolymer rubber, but also has the capabilities of improving cold resistance, reducing compression deformation and inhibiting thermal aging softening, has excellent adhesive force on the surface of base materials such as steel, concrete, aluminum and the like, and has the characteristics of high hardness, good wear resistance, corrosion resistance, excellent chemical resistance and the like of a coating film; the volatile organic compound content is low, and air pollution cannot be caused; the paint has no odor and is non-inflammable, and the safety in the processes of storage, transportation and use is greatly improved, so that the pollution of the volatilization of organic solvents in the paint to the atmosphere can be greatly reduced. And water is used as a solvent, so that the safety of the coating in the processes of storage, transportation and construction can be greatly improved, and the coating can be applied to architectural decoration, automobile manufacturing, ship and container manufacturing, railway locomotives, aerospace, traffic bridges, woodware coating and the like.

Detailed Description

Example 1

The production process of the epichlorohydrin blended rubber and plastic emulsion anticorrosive paint comprises the following steps: a. preparing a composite emulsifier, namely fixing a reaction kettle filled with a cross-linking agent and sodium diisobutyl sulfosuccinate in a constant-temperature water bath kettle, controlling the temperature at 70 ℃, slowly stirring by using a stirrer, wherein the cross-linking agent is a mixture of triethylene tetramine, hexamethylene diamine carbamate and trimethyl thiourea in a weight ratio of 2: 1 until the cross-linking agent is completely dissolved, then increasing the rotating speed to 300r/min, slowly adding sodium dodecyl benzene sulfonate in a ratio, and dispersing for 40min to obtain the composite emulsifier; b. the solvent of the epichlorohydrin rubber solution is dimethylformamide, and the epichlorohydrin rubber solution with the viscosity of 28.00 Pa.s and the mass fraction of 48 percent and a beaker of a composite emulsifier are placed in a constant-temperature beakerHeating in a warm water bath, stirring at the rotating speed of 1000rpm until the epichlorohydrin rubber and the emulsifier are uniformly mixed after the solid emulsifier in the reaction kettle is completely melted, dropwise adding distilled water at 60 ℃ until phase inversion occurs, then adding water until the solid content is 35%, wherein the mass fraction of the emulsifier is 9%, the sodium dodecyl benzene sulfonate, the sodium diisobutylsulfosuccinate and the cross-linking agent is = 4: 7: 1, the rotating speed is 500r/min, and the epichlorohydrin rubber emulsion is obtained at the temperature of 65 ℃; c. polymerization of paint: polymerizing methyl methacrylate and butyl acrylate into particles according to the mass ratio of 40/60 by an emulsion polymerization method, adding 5% of ethylene dimethacrylate, adding 100 parts of self-emulsifying polyether amine modified bisphenol A type waterborne epoxy resin and 4 parts of DMP-30 by mass, and drying and crushing at room temperature to obtain acrylic copolymer/epoxy resin powder paint; d. grinding and stirring: c, transferring the epichlorohydrin rubber emulsion 20, the catalyst 3, the filler 12 and the filler wollastonite powder 5 in the step c into a three-roll grinder, heating to 85 ℃, grinding for 10min to obtain a solidified glue solution, namely obtaining the epichlorohydrin blended rubber and plastic emulsion anticorrosive paint, wherein the independently subpackaged paint and the independently subpackaged solidified glue solution are formed by mixing and stirring the two before use and then carrying out a thermal curing reaction, and the mixing ratio of the independently subpackaged paint and the independently subpackaged solidified glue solution is as follows: mixing the curing glue solution and the paint in a weight ratio of 9: 7 for use; curing was complete after 3 days at room temperature. Self-emulsifying waterborne epoxy ZEW-331. Chlorinated polyether rubber ternary unsaturated CG-55 organic(Wuhan). The cross-linking agent of the step b is a mixture of triethylene tetramine, hexamethylene carbamate diamine and trimethyl thiourea in a weight ratio of 2: 1, wherein the solvent dichloroethane of the epichlorohydrin rubber solution of the step c. The filler in the step d is barite powder BA-3000 Fujian Xufeng, and the waterborne epoxy resin is self-emulsifying polyether amine modified bisphenol A waterborne epoxy resin.

The epichlorohydrin-blended rubber and plastic emulsion anticorrosive paint comprises an independently-packaged paint and an independently-packaged cured glue solution, and is formed by mixing and stirring the paint and the cured glue solution before use and performing a thermal curing reaction, wherein the mixing ratio of the independently-packaged paint to the independently-packaged cured glue solution is as follows: mixing the curing glue solution and the paint in a weight ratio of 9: 7 for use;

example 2

The production process of the epichlorohydrin blended rubber and plastic emulsion anticorrosive paint comprises the following steps: a. preparing a composite emulsifier, namely fixing a reaction kettle filled with a cross-linking agent which is a mixture of triethylene tetramine, hexamethylene diamine carbamate and trimethyl thiourea in a weight ratio of 2: 1 and diisobutyl sulfo-sodium succinate in a constant-temperature water bath kettle, controlling the temperature to be 70 ℃, slowly stirring the mixture by using a stirrer until the mixture is completely dissolved, then increasing the rotating speed to 300r/min, slowly adding sodium dodecyl benzene sulfonate in a ratio, and dispersing the mixture for 30min to obtain the composite emulsifier; b. the solvent of the epichlorohydrin rubber solution is dichloroethane, the epichlorohydrin rubber solution with the viscosity of 15.00 Pa.s and the mass fraction of 48% and the beaker of the composite emulsifier are placed in a constant-temperature water bath pot for heating, after the solid emulsifier in the reaction kettle is completely melted, the mixture is stirred at the rotating speed of 1200rpm until the epichlorohydrin rubber and the emulsifier are uniformly mixed, distilled water with the temperature of 60 ℃ is dripped until phase inversion occurs, then water is added until the solid content is 28%, wherein the mass fraction of the emulsifier is 9%, the sodium dodecyl benzene sulfonate, the sodium diisobutyl sulfosuccinate and the cross-linking agent are = 4: 7: 1, the rotating speed is 500r/min, and the epichlorohydrin rubber emulsion is obtained at the temperature of 65 ℃; c. polymerization of paint: polymerizing methyl methacrylate and butyl acrylate into particles according to the mass ratio of 40/60 by an emulsion polymerization method, adding 5% of ethylene dimethacrylate, adding 100 parts of self-emulsifying polyether amine modified bisphenol A type waterborne epoxy resin and 3 parts of DMP-30 by mass, and drying and crushing at room temperature to obtain acrylic copolymer/epoxy resin powder paint; d. grinding and stirring: and c, transferring the epichlorohydrin rubber emulsion 15 obtained in the step c, the catalyst 1, the filler 8 and the filler barite powder 5 into a three-roll grinder, heating to 75 ℃, grinding for 10min to obtain a cured glue solution, and thus obtaining the epichlorohydrin blended rubber and plastic emulsion anticorrosive paint. The coating is prepared by independently spraying the paint as powder coating, uniformly spraying the curing glue on the surface of the paint according to the weight ratio of the curing glue to the paint of 9: 6, rolling by a compression roller to uniformly form a film and performing thermal curing, wherein the thermal curing is performed for 30 minutes under the condition that the steam pressure is 0.5 MPa. Wherein the waterborne epoxy resin NPEW-257. Chlorinated polyether rubber ternary unsaturated CG-45 organic(Wuhan)And the crosslinking agent of the step b is a mixture of triethylene tetramine, hexamethylene carbamate diamine and trimethyl thiourea in a weight ratio of 2: 1, wherein the solvent of the epichlorohydrin rubber solution of the step c is dimethylformamide. The filler in the step d is wollastonite powder W800 which is high in Xin, and the waterborne epoxy resin is self-emulsifying polyether amine modified bisphenol A waterborne epoxy resin.

The epichlorohydrin blended rubber-plastic emulsion anticorrosive paint comprises independently-packaged paint and independently-packaged curing glue, the paint is independently used as powder paint for spraying, the spray gun has high pressure of 45KV, the powder supply pressure of 0.12Mpa and the powder supply amount of 100g/min, the distance of a spray head is 120mm, the moving speed is 0.1 m/s and the thickness of 90 mu m, the curing glue is uniformly sprayed on the surface of the paint according to the weight ratio of the curing glue to the paint of 9: 6, and the paint is evenly rolled by a compression roller to form a film and is thermally cured to obtain the epichlorohydrin blended rubber-plastic emulsion anticorrosive paint.

The epichlorohydrin blended rubber-plastic emulsion anticorrosive paint prepared in the embodiment 1-2 is subjected to performance test, and the test results are shown in Table 1

Table 1 Performance test results of production process performance of epichlorohydrin blended rubber-plastic emulsion anticorrosive paint of examples 1-2

Item	Example 1	Example 2
			Hardness of pencil	4H	4H
Impact resistance/cm	48.3	47.9
			Bending test/mm	1.3	1.2
Cross section experiment/stage	1	1
			Acid resistance (20% sulfuric acid solution)	720h has no abnormal condition	720h has no abnormal condition
Alkali resistance (10% NaOH)	720h has no abnormal condition	720h has no abnormal condition
			Alkali resistance [ saturated Ca (OH) ]2Solutions of]	480h has no abnormal condition	480h has no abnormal condition
Water resistance	480h has no abnormal condition	480h has no abnormal condition
			Salt water resistance (3% NaCl)	720h has no abnormal condition	720h has no abnormal condition
Resistance to salt fog	No bubbling, no rusting and no falling off after 480h	No bubbling, no rusting and no falling off after 480h

Note: reference GB/T1720-1979 paint film adhesion assay; GB/T1723-1993 coating viscosity determination; general preparation of paint films GB/T1727-1992; GB/T1728-1979 determination method for drying time of paint film and putty film; GB/T1731-1993 paint film flexibility assay; GB/T1732-1993 paint film impact resistance determination method; GB/T3186-2006 samples raw materials for paints, varnishes and paints and varnishes; GB9274-1988 determination of the liquid-resistant medium of colored paint and varnish; temperature and humidity of GB/T9278-2008 coating sample state regulation and test; visual colorimetry of GB/T9761-2008 paints and varnishes.