A method for preparing a fluorine-silicon-containing anticorrosive acrylic resin coating

Abstract

The invention relates to the technical field of acrylic resins, and discloses a method for preparing a fluorine-silicon-containing anticorrosive acrylic resin coating, comprising mixing a monomer solution and an initiator solution, reacting the mixture, then adding a fluorine-silicon acrylamide monomer to react, adding dilute ammonia, a defoamer, a leveling agent, and a film-forming aid, and mixing the mixture to obtain a fluorine-silicon-containing anticorrosive acrylic resin coating. The fluorine-silicon acrylamide monomer contains two alkenyl groups, which enables the acrylic resin to form a cross-linked structure, which is beneficial to improving the mechanical properties of the paint film, such as hardness and impact resistance. At the same time, the acrylic resin molecular chain forms a chemical cross-linked network, which can inhibit corrosive media such as water and salt from entering the paint film, further improving the water resistance and salt spray resistance of the paint film, and showing better water resistance, salt spray resistance, and anticorrosion performance.

Description

Technical Field

[0001] The invention relates to the technical field of acrylic resins, in particular to a method for preparing a fluorine-silicon-containing anticorrosive acrylic resin coating. Background Art

[0002] Paints are widely used in furniture, wood products, machinery and equipment, and transportation. Traditional paints are solvent-based paints, which contain volatile solvents that cause great pollution. In recent years, the development of environmentally friendly water-based paints has become a research trend. Among them, water-based acrylic resin paints use water as a solvent and cause little pollution. However, water-based acrylic resin paints have problems such as low mechanical properties such as hardness and poor water resistance and corrosion resistance.

[0003] At present, the modification methods of acrylic resin include cross-linking modification, copolymerization reaction, filling modification, etc. Introducing functional monomers such as silicon-containing and fluorine-containing monomers into the molecular chain of acrylic resin can improve the mechanical properties, water resistance and corrosion resistance of the paint film. The document "Preparation of Fluorosilicone Acrylic Emulsion by Core-Shell Emulsion Polymerization" reported that the fluorine-containing silicone acrylate obtained by copolymerizing fluorosilicone monomers with methyl methacrylate and butyl acrylate has the advantages of low water absorption and thermal decomposition temperature. However, this document did not improve the mechanical properties and salt spray resistance and corrosion resistance of acrylic esters. Summary of the invention

[0004] Technical problem to be solved: The present invention solves the problem that acrylic resin coating has poor corrosion resistance and poor mechanical properties.

[0005] Technical solution: A method for preparing a fluorine-silicon-containing anticorrosive acrylic resin coating:

[0006] (1) Add polymerization monomer and emulsifier to water, stir and mix to obtain monomer solution; add initiator to water, stir and mix to obtain initiator solution.

[0007] (2) Add water to the reaction bottle, heat to 65-75° C., dropwise add 20-30% volume of the monomer solution and 20-30% volume of the initiator solution, stir and react for 30-40 minutes, then add the remaining monomer solution and the remaining initiator solution, react for 2-3 hours, then add fluorosilicone acrylamide monomer, react for 40-60 minutes, cool, add dilute ammonia water to neutralize the solution to pH 7, add defoamer, leveling agent, film-forming aid, mix well, and obtain a fluorosilicone-containing anticorrosive acrylic resin coating.

[0008] Fluorosilicone acrylamide monomer has the structural formula as described in the following formula (I):

[0009]

[0010] Preferably, the polymerizable monomers include acrylic acid, methyl methacrylate, and butyl acrylate; the mass of the fluorosilicone acrylamide monomer is 3-12% of the total mass of the polymerizable monomers.

[0011] Preferably, the mass of the initiator is 0.6-0.8% of the total mass of the polymerized monomers; the initiator includes potassium persulfate.

[0012] Preferably, the mass of the emulsifier is 3-3.6% of the total mass of the polymerized monomers; the emulsifier includes OP-10, sodium dodecyl sulfate, sodium dodecylbenzene sulfonate. The film-forming aid includes alcohol ester 12.

[0013] Preferably, the preparation method of fluorosilicone acrylamide monomer is:

[0014] S1. Place the reaction bottle in an ice bath, add dichloromethane, p-hydroxymethylbenzaldehyde (CAS No. 52010-97-6), triethylamine, and dimethyldichlorosilane (CAS No. 75-78-5), wherein the mass of p-hydroxymethylbenzaldehyde and triethylamine is 210-220% and 160-176% of the mass of dimethyldichlorosilane, respectively; stir for 10-20 minutes, then react at 20-25° C. for 4-6 hours, rotary evaporate, wash with water and petroleum ether in turn, and dry to obtain intermediate 1.

[0015] S2. Add ethanol, intermediate 1, N-(3-aminopropyl)methacrylamide hydrochloride (CAS No. 72607-53-5), and sodium hydroxide to a reaction bottle, wherein the masses of N-(3-aminopropyl)methacrylamide hydrochloride and sodium hydroxide are 106-120% and 22-25% of the mass of intermediate 1, respectively; react at 40-55° C. for 7-10 h, cool to room temperature, add sodium borohydride, react for 3-4 h, rotary evaporate, wash with water and petroleum ether in turn, and dry to obtain intermediate 2.

[0016] S3. Place the reaction bottle in an ice bath, add dichloromethane, chloroform or toluene solvent, intermediate 2, triethylamine, perfluorooctanoyl chloride (CAS No. 335-64-8), wherein the mass of triethylamine and perfluorooctanoyl chloride is 34-42% and 150-170% of the mass of intermediate 2 respectively; stir for 10-20 minutes, then react at 20-40°C for 12-18 hours, rotary evaporate, wash with water and methanol in turn, and then recrystallize in chloroform to obtain fluorosilicic acid acrylamide monomer. The reaction formula is as follows:

[0017]

[0018] Technical effect: The present invention uses cheap and readily available p-hydroxymethylbenzaldehyde, dimethyldichlorosilane, N-(3-aminopropyl)methacrylamide hydrochloride, perfluorooctanoyl chloride and the like as raw materials to react and obtain a fluorosilicic acid acrylamide monomer containing siloxane, a perfluoroalkyl chain and two alkenyl groups.

[0019] The present invention uses fluorosilicone acrylamide monomer as a functional monomer and copolymerizes it with acrylic acid, methyl methacrylate, etc. The molecular chain of the obtained acrylic resin contains flexible siloxane and hydrophobic perfluoroalkyl chain, which is beneficial to improving the water resistance and salt spray resistance of the paint film.

[0020] The fluorosilicone acrylamide monomer of the present invention contains two alkenyl groups, and is cross-linked and polymerized with monomers such as methyl methacrylate to form a cross-linked structure of the acrylic resin, which is beneficial to improving the mechanical properties of the paint film such as hardness and impact resistance. At the same time, the acrylic resin molecular chain forms a chemical cross-linked network, which can inhibit corrosive media such as water and salt from entering the paint film, further improving the water resistance and salt spray resistance of the paint film, and showing better water resistance, salt spray resistance and anti-corrosion performance. DETAILED DESCRIPTION

[0021] In order to enable those skilled in the art to understand the characteristics and effects of the present invention, the following is a general description and definition of the terms and expressions mentioned in the specification and claims. Unless otherwise specified, all technical and scientific terms used in the text are the common meanings understood by those skilled in the art for the present invention. In the event of a conflict, the definition in this specification shall prevail.

[0022] Implementation method:

[0023] (1) Place a reaction flask in an ice bath, add dichloromethane, 210-220 parts by weight of p-hydroxymethylbenzaldehyde, 160-176 parts by weight of triethylamine, and 100 parts by weight of dimethyldichlorosilane, stir for 10-20 minutes, then react at 20-25° C. for 4-6 hours, rotary evaporate, wash with water and petroleum ether in turn, and dry to obtain intermediate 1.

[0024] (2) Add ethanol, 100 parts by weight of intermediate 1, 106-120 parts by weight of N-(3-aminopropyl)methyl acrylamide hydrochloride, and 22-25 parts by weight of sodium hydroxide to a reaction flask, react at 40-55° C. for 7-10 hours, cool to room temperature, add sodium borohydride, react for 3-4 hours, rotary evaporate, wash with water and petroleum ether in turn, and dry to obtain intermediate 2.

[0025] (3) Place the reaction flask in an ice bath, add any solvent of dichloromethane, chloroform, or toluene, 100 parts by weight of the intermediate 2, 34-42 parts by weight of triethylamine, and 150-170 parts by weight of perfluorooctanoyl chloride, stir for 10-20 minutes, then react at 20-40° C. for 12-18 hours, rotary evaporate, wash with water and methanol in turn, and then recrystallize in chloroform to obtain a fluorosilicic acid acrylamide monomer.

[0026] (4) Adding polymerizable monomers and emulsifiers to water, stirring and mixing to obtain a monomer solution; the polymerizable monomers include acrylic acid, methyl methacrylate, and butyl acrylate; the emulsifiers include OP-10, sodium dodecyl sulfate, and sodium dodecylbenzene sulfonate; the mass of the emulsifier is 3-3.6% of the total mass of the polymerizable monomers; adding an initiator potassium persulfate in an amount of 0.6-0.8% of the total mass of the polymerizable monomers to the water, stirring and mixing to obtain an initiator solution.

[0027] (5) Add water to the reaction flask, heat to 65-75° C., dropwise add 20-30% volume of monomer solution and 20-30% volume of initiator solution, stir and react for 30-40 minutes, then add the remaining monomer solution and the remaining initiator solution, react for 2-3 hours, then add 3-12% of the total mass of polymerizable monomers of fluorosilicone acrylamide monomer, react for 40-60 minutes, cool, add dilute ammonia water to neutralize the solution to pH 7, add defoamer, leveling agent, film-forming aid alcohol ester 12, mix well, and obtain a fluorosilicone-containing anticorrosive acrylic resin coating.

[0028] Example 1

[0029] (1) Place the reaction flask in an ice bath, add 10 mL of dichloromethane, 1.1 g of p-hydroxymethylbenzaldehyde, 0.88 g of triethylamine, and 0.5 g of dimethyldichlorosilane, stir for 20 min, then react at 20 °C for 6 h, rotary evaporate, wash with water and petroleum ether in turn, and dry to obtain intermediate 1.

[0030] (2) Add 40 mL of ethanol, 1 g of intermediate 1, 1.06 g of N-(3-aminopropyl)methyl acrylamide hydrochloride, and 0.22 g of sodium hydroxide to a reaction flask, react at 45° C. for 10 h, cool to room temperature, add 0.3 g of sodium borohydride, react for 3 h, rotary evaporate, wash with water and petroleum ether in turn, and dry to obtain intermediate 2.

[0031] (3) Place the reaction bottle in an ice bath, add 15 mL of chloroform, 0.5 g of intermediate 2, 0.21 g of triethylamine, and 0.85 g of perfluorooctanoyl chloride, stir for 10 min, then react at 20 ° C for 12 h, rotary evaporate, wash with water and methanol in turn, and then recrystallize in chloroform to obtain fluorosilicic acid acrylamide monomer.

[0032] Example 2

[0033] (1) Place the reaction flask in an ice bath, add 10 mL of dichloromethane, 1.05 g of p-hydroxymethylbenzaldehyde, 0.8 g of triethylamine, and 0.5 g of dimethyldichlorosilane, stir for 20 min, then react at 25 °C for 4 h, rotary evaporate, wash with water and petroleum ether in turn, and dry to obtain intermediate 1.

[0034] (2) Add 40 mL of ethanol, 1 g of intermediate 1, 1.2 g of N-(3-aminopropyl)methyl acrylamide hydrochloride, and 0.25 g of sodium hydroxide to a reaction flask, react at 55° C. for 7 h, cool to room temperature, add 0.28 g of sodium borohydride, react for 4 h, rotary evaporate, wash with water and petroleum ether in turn, and dry to obtain intermediate 2.

[0035] (3) Place the reaction bottle in an ice bath, add 15 mL of toluene, 0.5 g of intermediate 2, 0.17 g of triethylamine, and 0.75 g of perfluorooctanoyl chloride, stir for 10 min, and then react at 40 ° C for 18 h, rotary evaporate, wash with water and methanol in turn, and then recrystallize in chloroform to obtain fluorosilicic acid acrylamide monomer.

[0036] Example 3

[0037] (1) Add 4 g of acrylic acid, 55 g of methyl methacrylate, 41 g of butyl acrylate, 1 g of emulsifier OP-10, and 2.6 g of sodium dodecylbenzene sulfonate to 200 mL of water, and stir to obtain a monomer solution; add 0.6 g of initiator potassium persulfate to 8 mL of water, and stir to obtain an initiator solution.

[0038] (2) Add 200 mL of water to the reaction flask, heat to 75° C., dropwise add 30% volume of the monomer solution and 30% volume of the initiator solution, stir and react for 40 min, then add the remaining monomer solution and the remaining initiator solution, react for 2 h, then add 3 g of the fluorosilicone acrylamide monomer prepared in Example 1, react for 40 min, cool, add dilute ammonia water to neutralize the solution to pH 7, add 0.7 g of mineral oil defoamer XH5020, 0.5 g of leveling agent TEGOA115, and 5.4 g of film-forming aid alcohol ester 12, mix well, and obtain a fluorosilicone-containing anticorrosive acrylic resin coating.

[0039] Example 4

[0040] (1) Add 3 g of acrylic acid, 59 g of methyl methacrylate, 38 g of butyl acrylate, 1 g of emulsifier OP-10, and 2 g of sodium dodecyl sulfate to 200 mL of water, and stir to obtain a monomer solution; add 0.8 g of initiator potassium persulfate to 8 mL of water, and stir to obtain an initiator solution.

[0041] (2) Add 200 mL of water to the reaction flask, heat to 65° C., dropwise add 20% volume of the monomer solution and 20% volume of the initiator solution, stir and react for 30 min, then add the remaining monomer solution and the remaining initiator solution, react for 3 h, then add 3 g of the fluorosilicone acrylamide monomer prepared in Example 1, react for 60 min, cool, add dilute ammonia water to neutralize the solution to pH 7, add 0.8 g of mineral oil defoamer XH5020, 0.3 g of leveling agent TEGOA115, and 4.8 g of film-forming aid alcohol ester 12, mix well, and obtain a fluorosilicone-containing anticorrosive acrylic resin coating.

[0042] Comparative Example 1

[0043] (1) Add 4 g of acrylic acid, 55 g of methyl methacrylate, 41 g of butyl acrylate, 1 g of emulsifier OP-10, and 2.6 g of sodium dodecylbenzene sulfonate to 200 mL of water, and stir to obtain a monomer solution; add 0.6 g of initiator potassium persulfate to 8 mL of water, and stir to obtain an initiator solution.

[0044] (2) Add 200 mL of water to the reaction flask, heat to 75° C., dropwise add 30% volume of the monomer solution and 30% volume of the initiator solution, stir and react for 40 min, then add the remaining monomer solution and the remaining initiator solution, react for 2 h, add dilute ammonia water to neutralize the solution to pH 7, add 0.7 g of mineral oil defoamer XH5020, 0.5 g of leveling agent TEGOA115, and 5.4 g of film-forming aid alcohol ester 12, mix well, and obtain an anticorrosive acrylic resin coating.

[0045] Comparative Example 2

[0046] (1) Add 4 g of acrylic acid, 55 g of methyl methacrylate, 41 g of butyl acrylate, 1 g of emulsifier OP-10, and 2.6 g of sodium dodecylbenzene sulfonate to 200 mL of water, and stir to obtain a monomer solution; add 0.6 g of initiator potassium persulfate to 8 mL of water, and stir to obtain an initiator solution.

[0047] (2) Add 200 mL of water to the reaction flask, heat to 75° C., dropwise add 30% volume of the monomer solution and 30% volume of the initiator solution, stir and react for 40 min, then add the remaining monomer solution and the remaining initiator solution, react for 2 h, then add 3 g of the intermediate 2 prepared in Example 1, react for 40 min, cool, add dilute ammonia water to neutralize the solution to pH 7, add 0.7 g of mineral oil defoamer XH5020, 0.5 g of leveling agent TEGOA115, and 5.4 g of film-forming aid alcohol ester 12, mix well, and obtain a silicon-containing anticorrosive acrylic resin coating.

[0048] Comparative Example 3

[0049] (1) Add 4 g of acrylic acid, 55 g of methyl methacrylate, 41 g of butyl acrylate, 1 g of emulsifier OP-10, and 2.6 g of sodium dodecylbenzene sulfonate to 200 mL of water, and stir to obtain a monomer solution; add 0.6 g of initiator potassium persulfate to 8 mL of water, and stir to obtain an initiator solution.

[0050] (2) Add 200 mL of water to the reaction flask, heat to 75° C., dropwise add 30% volume of the monomer solution and 30% volume of the initiator solution, stir and react for 40 min, then add the remaining monomer solution and the remaining initiator solution, react for 2 h, then add 3 g of 15-fluorooctyl methacrylate (CAS No. 3934-23-4), react for 40 min, cool, add dilute ammonia water to neutralize the solution to pH 7, add 0.7 g of mineral oil defoamer XH5020, 0.5 g of leveling agent TEGOA115, and 5.4 g of film-forming aid alcohol ester 12, mix well, and obtain a fluorine-containing anticorrosive acrylic resin coating.

[0051] Comparative Example 4

[0052] (1) Prepare fluorosilicone monomers by referring to the method in the article "Preparation of fluorosilicone acrylate emulsion by core-shell emulsion polymerization" in the journal "Applied Chemistry", Vol. 24, No. 6, June 2007.

[0053] Add 15 mL of tetrahydrofuran, 1.37 g of triethoxyvinylsilane, and 0.06 g of p-toluenesulfonic acid to the reaction bottle, heat to 65°C, and dropwise add 10 g of tridecafluoro-1-octanol (CAS No. 647-42-7), control the dropwise addition time to 4 hours, then react for 1 hour, and remove low-boiling substances by vacuum distillation to obtain a fluorosilicon monomer. The structural formula is:

[0054] (2) Add 200 mL of water to the reaction flask, heat to 75° C., dropwise add 30% volume of the monomer solution and 30% volume of the initiator solution, stir and react for 40 min, then add the remaining monomer solution and the remaining initiator solution, react for 2 h, then add 3 g of fluorosilicone monomer, react for 40 min, cool, add dilute ammonia water to neutralize the solution to pH 7, add 0.7 g of mineral oil defoamer XH5020, 0.5 g of leveling agent TEGOA115, and 5.4 g of film-forming aid alcohol ester 12, mix well, and obtain a fluorosilicone-containing anticorrosive acrylic resin coating.

[0055] The acrylic resin coating is cured to form a paint film at a curing temperature of 120°C for 1 hour.

[0056] The hardness of acrylic resin paint film was tested according to GB / T 6739-2022. The impact resistance was tested according to GB / T1732-2020. The flexibility was tested according to GB / T 1731-2020. The water resistance was tested according to GB / T1733-1993. The salt spray resistance was tested according to GB / T 1771-2007, and the substrate was tinplate; the test structure is shown in the following table.

[0057]

[0058] As can be seen from the above table, fluorosilicone acrylamide monomer is added to the acrylic resin of Examples 3 and 4 as a functional monomer, and copolymerized with acrylic acid, methyl methacrylate, etc. The molecular chain of the obtained acrylic resin contains flexible siloxane and hydrophobic perfluoroalkyl chain, which is beneficial to improve the water resistance and salt spray resistance of the paint film. At the same time, the fluorosilicone acrylamide monomer contains two alkenyl groups, which is cross-linked and polymerized with monomers such as methyl methacrylate to form a cross-linked structure of the acrylic resin, which is beneficial to improve the mechanical properties such as hardness and impact resistance of the paint film. At the same time, the acrylic resin molecular chain forms a chemical cross-linked network, which can inhibit corrosive media such as water and salt from entering the paint film, further improving the water resistance and salt spray resistance of the paint film, and showing better water resistance, salt spray resistance and anti-corrosion properties.

[0059] In Comparative Example 1, no fluorosilicone acrylamide monomer was added, and only acrylic acid, methyl methacrylate, and butyl acrylate were copolymerized. The obtained acrylic resin did not contain siloxane and perfluoroalkyl chains, and did not form a chemical cross-linking network. The mechanical properties such as hardness and impact resistance were poor, the water resistance and salt spray resistance were poor, and the anti-corrosion performance was poor.

[0060] Comparative Example 2 added intermediate 2 The copolymerization reaction is carried out to form a chemically cross-linked network of the obtained acrylic resin, and the hardness and impact resistance are significantly higher than those of Comparative Example 1, and the water resistance and salt spray resistance are excellent. However, it does not contain a perfluoroalkyl chain, has poor hydrophobicity, poor water resistance and salt spray resistance, and the paint film is prone to blistering.

[0061] In Comparative Example 3, pentafluorooctyl methacrylate was added for copolymerization reaction, and the obtained acrylic resin did not form a chemical cross-linking network and did not contain a flexible siloxane structure. The mechanical properties such as hardness and impact resistance, water resistance, salt spray resistance and corrosion resistance were lower than those in Example 3.

[0062] Comparative Example 4 added fluorine silicon monomer By copolymerization, flexible siloxane and hydrophobic perfluoroalkyl chains are introduced into the acrylic resin molecular chain. Its water resistance, salt spray resistance and corrosion resistance are significantly better than those of Example 1. However, it contains only one olefin group and cannot form a chemical cross-linking network. Its comprehensive performance is lower than that of Example 3.

[0063] Example 5

[0064] (1) Add 200 mL of water to a reaction flask, heat to 75° C., dropwise add 30% volume of the monomer solution and 30% volume of the initiator solution, stir and react for 40 min, then add the remaining monomer solution and the remaining initiator solution, react for 2 h, then add 5 g of the fluorosilicone acrylamide monomer prepared in Example 1, react for 40 min, cool, add dilute ammonia water to neutralize the solution to pH 7, add 0.7 g of mineral oil defoamer XH5020, 0.5 g of leveling agent TEGOA115, and 5.4 g of film-forming aid alcohol ester 12, mix well, and obtain a fluorosilicone-containing anticorrosive acrylic resin coating.

[0065] Example 6

[0066] (1) Add 200 mL of water to a reaction flask, heat to 75° C., dropwise add 30% volume of the monomer solution and 30% volume of the initiator solution, stir and react for 40 min, then add the remaining monomer solution and the remaining initiator solution, react for 2 h, then add 7 g of the fluorosilicone acrylamide monomer prepared in Example 1, react for 40 min, cool, add dilute ammonia water to neutralize the solution to pH 7, add 0.7 g of mineral oil defoamer XH5020, 0.5 g of leveling agent TEGOA115, and 5.4 g of film-forming aid alcohol ester 12, mix well, and obtain a fluorosilicone-containing anticorrosive acrylic resin coating.

[0067] Example 7

[0068] (1) Add 200 mL of water to a reaction flask, heat to 75° C., dropwise add 30% volume of the monomer solution and 30% volume of the initiator solution, stir and react for 40 min, then add the remaining monomer solution and the remaining initiator solution, react for 2 h, then add 9.5 g of the fluorosilicone acrylamide monomer prepared in Example 1, react for 40 min, cool, add dilute ammonia water to neutralize the solution to pH 7, add 0.7 g of mineral oil defoamer XH5020, 0.5 g of leveling agent TEGOA115, and 5.4 g of film-forming aid alcohol ester 12, mix well, and obtain a fluorosilicone-containing anticorrosive acrylic resin coating.

[0069] Example 8

[0070] (1) Add 200 mL of water to a reaction flask, heat to 75° C., dropwise add 30% volume of the monomer solution and 30% volume of the initiator solution, stir and react for 40 min, then add the remaining monomer solution and the remaining initiator solution, react for 2 h, then add 12 g of the fluorosilicone acrylamide monomer prepared in Example 1, react for 40 min, cool, add dilute ammonia water to neutralize the solution to pH 7, add 0.7 g of mineral oil defoamer XH5020, 0.5 g of leveling agent TEGOA115, and 5.4 g of film-forming aid alcohol ester 12, mix well, and obtain a fluorosilicone-containing anticorrosive acrylic resin coating.

[0071] The performance of acrylic resin coating was tested according to the above method, and the test structure is shown in the following table.

[0072]

[0073]

[0074] It can be seen from the above table that in Examples 5-8, as the amount of fluorosilicone acrylamide monomer is gradually increased, the acrylic resin coating still maintains good mechanical properties such as hardness and impact resistance, and has excellent water resistance, salt spray resistance and corrosion resistance.

[0075] For the convenience of explanation, the above description has been made in conjunction with specific embodiments. However, the above discussion in some embodiments is not intended to be exhaustive or limit the embodiments to the specific forms disclosed above. According to the above teachings, various modifications and variations can be obtained. The selection and description of the above embodiments are to better explain the principles and practical applications, so that those skilled in the art can better use the embodiments and various different variations of the embodiments suitable for specific use considerations.

Claims

1. A method for preparing a fluorine-silicon-containing anticorrosive acrylic resin coating, characterized in that: The preparation method is: (1) Adding polymerization monomers and emulsifiers to water, stirring and mixing, to obtain a monomer solution; adding initiators to water, stirring and mixing, to obtain an initiator solution; (2) Add water to the reaction bottle, heat to 65-75° C., dropwise add 20-30% volume of the monomer solution and 20-30% volume of the initiator solution, stir and react for 30-40 minutes, then add the remaining monomer solution and the remaining initiator solution, react for 2-3 hours, then add fluorosilicone acrylamide monomer, react for 40-60 minutes, cool, add dilute ammonia water for neutralization, add defoamer, leveling agent, film-forming aid, mix well, and obtain a fluorosilicone-containing anticorrosive acrylic resin coating; The fluorosilicone acrylamide monomer has the structural formula described in the following formula (I): Formula (I); The preparation method of the fluorosilicone acrylamide monomer is as follows: S1, placing a reaction bottle in an ice bath, adding dichloromethane, p-hydroxymethylbenzaldehyde, triethylamine, and dimethyldichlorosilane, stirring for 10-20 minutes, then reacting at 20-25° C. for 4-6 hours, rotary evaporation, washing, and drying to obtain an intermediate 1; S2, add ethanol, intermediate 1, N-(3-aminopropyl)methacrylamide hydrochloride, and sodium hydroxide to the reaction bottle, react at 40-55° C. for 7-10 h, cool to room temperature, add sodium borohydride, react for 3-4 h, rotary evaporate, wash, and dry to obtain intermediate 2; S3, placing the reaction bottle in an ice bath, adding solvent, intermediate 2, triethylamine, and perfluorooctanoyl chloride, stirring for 10-20 minutes, and then reacting at 20-40° C. for 12-18 hours, rotary evaporation, washing, and recrystallization to obtain fluorosilicic acid acrylamide monomer; In S1, the mass of p-hydroxymethylbenzaldehyde and triethylamine is 210-220% and 160-176% of the mass of dimethyldichlorosilane, respectively; In S2, the masses of N-(3-aminopropyl)methacrylamide hydrochloride and sodium hydroxide are 106-120% and 22-25% of the mass of intermediate 1, respectively; In S3, the masses of triethylamine and perfluorooctanoyl chloride are 34-42% and 150-170% of the mass of intermediate 2, respectively.

2. The method for preparing the fluorine-silicon-containing anticorrosive acrylic resin coating according to claim 1, characterized in that: The polymerizable monomers include acrylic acid, methyl methacrylate and butyl acrylate; the mass of the fluorosilicone acrylamide monomer is 3-12% of the total mass of the polymerizable monomers.

3. The method for preparing the fluorine-silicon-containing anticorrosive acrylic resin coating according to claim 1, characterized in that: The mass of the initiator is 0.6-0.8% of the total mass of the polymerization monomers; the initiator includes potassium persulfate.

4. The method for preparing the fluorine-silicon-containing anticorrosive acrylic resin coating according to claim 1, characterized in that: The mass of the emulsifier is 3-3.6% of the total mass of the polymerized monomers; the emulsifier is OP-10, sodium dodecyl sulfate or sodium dodecylbenzene sulfonate.

5. The method for preparing the fluorine-silicon-containing anticorrosive acrylic resin coating according to claim 1, characterized in that: The film-forming aid includes alcohol ester 12.

6. The method for preparing the fluorine-silicon-containing anticorrosive acrylic resin coating according to claim 1, characterized in that: In the step S3, the solvent is dichloromethane, chloroform or toluene.

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