Super-weather-resistant acrylic acid modified polysiloxane heavy anti-corrosion coating and preparation method thereof

Abstract

The invention discloses a super-weather-resistant acrylic acid modified polysiloxane heavy anti-corrosion coating and a preparation method thereof.The preparation method of the coating comprises the following steps that acrylic acid modified polysiloxane, epoxy oligosiloxane, a solvent, a flatting agent and a dispersing agent are mixed to be uniform in a container, then a defoaming agent, filler and pigment are added and mixed to be uniform, and the super-weather-resistant acrylic acid modified polysiloxane heavy anti-corrosion coating is obtained. Adding the thickening agent and the coalescing agent, uniformly mixing, finally adding the curing agent, and uniformly mixing to obtain the super-weather-resistant acrylic acid modified polysiloxane heavy anti-corrosion coating. The coating disclosed by the invention has excellent weather resistance and corrosion resistance.

Description

Technical Field

[0001] The invention relates to the technical field of anti-corrosion coatings, and in particular to a super-weather-resistant acrylic modified polysiloxane heavy-duty anti-corrosion coating and a preparation method thereof. Background Art

[0002] With the rapid development of industries such as construction, transportation, petrochemicals, and electricity, the market demand for anti-corrosion coatings is growing. Traditional anti-corrosion coatings are mainly based on materials such as alkyd resins, epoxy resins, and polyurethanes, but these coatings have obvious deficiencies in terms of weather resistance, chemical resistance, and long-term anti-corrosion performance. Especially in outdoor environments, conditions such as ultraviolet light, high temperature, and high humidity can easily cause coating aging, powdering, gloss loss, and even peeling, which seriously affects the service life and protective effect of the coating.

[0003] In recent years, acrylic modified polysiloxane coatings have attracted attention due to their excellent weather resistance, chemical resistance and low VOC properties. This type of coating combines acrylic resin with polysiloxane resin to form an interpenetrating network structure, which combines the mechanical properties of acrylic resin with the weather resistance of polysiloxane resin. However, in the prior art, acrylic modified polysiloxane coatings have a slow curing speed, a large brittle film, and need to improve adhesion. In addition, the anti-corrosion performance in certain harsh environments (such as high humidity and strong acid and alkali conditions) still needs to be further optimized. Summary of the invention

[0004] Based on the technical problems existing in the background technology, the present invention proposes a super weather-resistant acrylic modified polysiloxane heavy-duty anti-corrosion coating and a preparation method thereof, wherein the coating has excellent weather resistance and anti-corrosion properties.

[0005] The present invention provides a method for preparing a super-weather-resistant acrylic modified polysiloxane heavy-duty anticorrosive coating, and the method steps are as follows: S1: Preparation of acrylic modified polysiloxane; Under an inert atmosphere, isomethylvinyl trimethoxysilane, glycidyl methacrylate, ethyl isocyanate acrylate, sodium dodecyl sulfate and an initiator are reacted in a reactor to prepare acrylic acid-modified polysiloxane; S2: Preparation of epoxy oligosiloxane; 3-aminopropyltrimethoxysilane, hexadecyltrimethoxysilane, 3-glycidyloxypropyltrimethoxysilane, ethanol and water are uniformly mixed in a reaction container, and then hydrochloric acid is added for reflux reaction to obtain epoxy oligosiloxane; S3: Preparation of super weather-resistant acrylic modified polysiloxane heavy-duty anticorrosive coating; Mix acrylic modified polysiloxane, epoxy oligosiloxane, solvent, leveling agent and dispersant in a container, then add defoamer, filler and pigment and mix them evenly, then add thickener and film-forming aid and mix them evenly, finally add curing agent and mix well to obtain super weather-resistant acrylic modified polysiloxane heavy-duty anti-corrosion coating.

[0006] Preferably, the mass ratio of isomethylvinyltrimethoxysilane, glycidyl methacrylate, ethyl isocyanate acrylate, sodium dodecyl sulfate and initiator in S1 is 100:30-50:20-40:1-10:1-5.

[0007] Preferably, the reaction temperature in S1 is 60-80° C., and the reaction time is 4-6 h.

[0008] Preferably, the initiator in S1 is one or more of benzoyl peroxide, lauroyl peroxide, diisopropylbenzene peroxide, di-tert-butyl peroxide, potassium persulfate, sodium persulfate, ammonium persulfate and azobisisobutyronitrile.

[0009] Preferably, the mass ratio of 3-aminopropyltrimethoxysilane, hexadecyltrimethoxysilane and 3-glycidyloxypropyltrimethoxysilane in S2 is 1:0.5-1:1-3.

[0010] Preferably, the reaction temperature in S2 is 55-65°C and the reaction time is 20-28h.

[0011] Preferably, S3 contains the following raw materials in parts by weight: 30-50 parts of acrylic modified polysiloxane, 20-30 parts of epoxy oligosiloxane, 5-10 parts of solvent, 0.1-0.5 parts of leveling agent, 0.1-1 parts of dispersant, 0.1-0.5 parts of defoaming agent, 10-30 parts of filler, 10-20 parts of pigment, 0.1-1 parts of thickener, 1-5 parts of film-forming aid, and 10-20 parts of curing agent.

[0012] Preferably, the solvent is one or more of xylene, isopropyl ketone and ethyl acetate; The leveling agent is one or more of polyether modified polysiloxane, acrylate leveling agent, fluorocarbon modified leveling agent, silicone leveling agent and polyacrylate leveling agent; The dispersant is one or more of a modified polysiloxane dispersant, a polycarboxylate dispersant, a phosphate dispersant and an acrylate dispersant; The defoamer is one or more of an organosilicon defoamer, a polyether-modified polysiloxane defoamer and a mineral oil-based defoamer; The pigment is one or more of titanium dioxide, carbon black, red iron oxide and phthalocyanine blue; The thickener is one or more of hydroxyethyl cellulose, polyurethane thickener, bentonite, acrylic thickener and magnesium aluminum silicate; The film-forming aid is one or more of dipropylene glycol methyl ether, dipropylene glycol butyl ether, ethylene glycol butyl ether, benzyl alcohol and dodecyl alcohol ester; The curing agent is one or more of aliphatic isocyanate, epoxy resin curing agent, polyurethane curing agent, water-soluble melamine formaldehyde resin and benzoguanamine formaldehyde resin.

[0013] Preferably, the filler is composed of nano silicon dioxide, nano calcium carbonate and nano boron nitride in a mass ratio of 3:1-9:1-9.

[0014] The invention provides a super weather-resistant acrylic modified polysiloxane heavy-duty anticorrosive coating, which is prepared by adopting the above preparation method.

[0015] Beneficial technical effects of the present invention: (1) The present invention uses isomethylvinyl trimethoxysilane, glycidyl methacrylate and ethyl isocyanate acrylate as monomers to prepare acrylic modified polysiloxane, and the selected fillers are composed of nano-silicon dioxide, nano-calcium carbonate and nano-boron nitride. The acrylic modified polysiloxane can form an irregular "maze effect" with the nano-filler, thereby prolonging the diffusion time of the corrosive medium in the coating, thereby further improving the corrosion resistance of the coating; at the same time, the nano-filler can also improve the corrosion resistance and weather resistance of the coating.

[0016] (2) The coating of the present invention includes acrylic modified polysiloxane and epoxy oligosiloxane, which can form a dense coating structure, which can not only synergistically resist the erosion of corrosive media such as acids, alkalis, and salts, but also is not easy to crack or peel off. DETAILED DESCRIPTION

[0017] The present invention will be further explained below in conjunction with specific embodiments.

[0018] The leveling agent in each embodiment of the present invention is KMT-5510 leveling agent, purchased from Foshan Corning New Materials Co., Ltd.; the dispersant is K-259 polyacrylic acid sodium salt dispersant, purchased from Guangdong Zhongke Hongtai New Materials Co., Ltd.; the defoaming agent is SQ-638 defoaming agent, purchased from Guangdong Lvjie Chemical Technology Co., Ltd.; the pigment is titanium dioxide, purchased from Shanghai Mengmei Chemical Co., Ltd.; the film-forming aid is dipropylene glycol methyl ether, purchased from Guangzhou Hongfa Chemical Co., Ltd.; the thickener is hydroxyethyl cellulose, which is commercially available; the curing agent is Diwogao DVGE-N3300 curing agent, purchased from Shanghai Longti Chemical Co., Ltd.; the remaining components of the present invention are also commercially available.

[0019] Example 1

[0020] Under an inert atmosphere, 100 g of isomethylvinyltrimethoxysilane, 40 g of glycidyl methacrylate, 30 g of ethyl isocyanate acrylate, 5 g of sodium dodecyl sulfate and 3 g of azobisisobutyronitrile were reacted in a reactor at 70° C. for 5 h to obtain acrylic modified polysiloxane, which was recorded as A1.

[0021] 100 g of 3-aminopropyltrimethoxysilane, 80 g of hexadecyltrimethoxysilane, 200 g of 3-glycidyloxypropyltrimethoxysilane, 200 mL of ethanol and 80 mL of water were mixed evenly in a reaction container, and then 20 mL of hydrochloric acid (mass fraction 15%) was added to reflux at 60° C. for 24 h to obtain epoxy oligosiloxane, which was recorded as B1.

[0022] 80g of acrylic modified polysiloxane A1, 50g of epoxy oligosiloxane B1, 16g of xylene / isopropyl ketone / ethyl acetate, 0.6g of leveling agent and 1g of dispersant were mixed evenly in a container, and then 0.6g of defoamer, 40g of filler and 30g of pigment were added and mixed evenly, and then 1g of thickener and 6g of film-forming aid were added and mixed evenly, and finally 30g of curing agent was added and mixed evenly to obtain a super weather-resistant acrylic modified polysiloxane heavy-duty anti-corrosion coating, which was recorded as C1.

[0023] The filler is composed of nano silicon dioxide, nano calcium carbonate and nano boron nitride in a mass ratio of 1:1:1.

[0024] Example 2

[0025] Under an inert atmosphere, 100 g of isomethylvinyltrimethoxysilane, 30 g of glycidyl methacrylate, 20 g of ethyl isocyanate acrylate, 1 g of sodium dodecyl sulfate and 1 g of azobisisobutyronitrile were reacted in a reactor at 60° C. for 6 h to obtain an acrylic modified polysiloxane, which was recorded as A2.

[0026] 100 g of 3-aminopropyltrimethoxysilane, 50 g of hexadecyltrimethoxysilane, 100 g of 3-glycidyloxypropyltrimethoxysilane, 100 mL of ethanol and 50 mL of water were mixed evenly in a reaction container, and 20 mL of hydrochloric acid (mass fraction 15%) was added to reflux at 55° C. for 28 hours to obtain epoxy oligosiloxane, which was recorded as B2.

[0027] 60g of acrylic modified polysiloxane A2, 40g of epoxy oligosiloxane B2, 10g of xylene / isopropyl ketone / ethyl acetate, 0.2g of leveling agent and 0.2g of dispersant were mixed evenly in a container, and then 0.2g of defoamer, 20g of filler and 20g of pigment were added and mixed evenly, and then 0.2g of thickener and 2g of film-forming aid were added and mixed evenly, and finally 20g of curing agent was added and mixed evenly to obtain a super weather-resistant acrylic modified polysiloxane heavy-duty anti-corrosion coating, which was recorded as C2.

[0028] The filler is composed of nano silicon dioxide, nano calcium carbonate and nano boron nitride in a mass ratio of 3:1:1.

[0029] Example 3

[0030] Under an inert atmosphere, 100 g of isomethylvinyltrimethoxysilane, 50 g of glycidyl methacrylate, 40 g of ethyl isocyanate acrylate, 10 g of sodium dodecyl sulfate and 5 g of azobisisobutyronitrile were reacted in a reactor at 80° C. for 4 h to obtain acrylic modified polysiloxane, which was recorded as A3.

[0031] 100 g of 3-aminopropyltrimethoxysilane, 100 g of hexadecyltrimethoxysilane, 300 g of 3-glycidyloxypropyltrimethoxysilane, 300 mL of ethanol and 100 mL of water were mixed evenly in a reaction container, and 20 mL of hydrochloric acid (mass fraction 15%) was added to reflux at 65° C. for 20 h to obtain epoxy oligosiloxane, which was recorded as B3.

[0032] 100g of acrylic modified polysiloxane A3, 60g of epoxy oligosiloxane B3, 20g of xylene / isopropyl ketone / ethyl acetate, 1g of leveling agent and 2g of dispersant were mixed evenly in a container, and then 1g of defoamer, 60g of filler and 40g of pigment were added and mixed evenly, and then 2g of thickener and 10g of film-forming aid were added and mixed evenly, and finally 40g of curing agent was added and mixed evenly to obtain a super weather-resistant acrylic modified polysiloxane heavy-duty anti-corrosion coating, which was recorded as C3.

[0033] The filler is composed of nano silicon dioxide, nano calcium carbonate and nano boron nitride in a mass ratio of 1:3:3.

[0034] Comparative Example 1 Under an inert atmosphere, 100 g of isomethylvinyltrimethoxysilane, 70 g of ethyl isocyanate acrylate, 5 g of sodium dodecyl sulfate and 3 g of azobisisobutyronitrile were reacted in a reactor at 70° C. for 5 h to obtain acrylic acid-modified polysiloxane, which was recorded as A4.

[0035] 80g of acrylic modified polysiloxane A4, 50g of epoxy oligosiloxane B1, 16g of xylene / isopropyl ketone / ethyl acetate, 0.6g of leveling agent and 1g of dispersant were mixed evenly in a container, and then 0.6g of defoamer, 40g of filler and 30g of pigment were added and mixed evenly, and then 1g of thickener and 6g of film-forming aid were added and mixed evenly, and finally 30g of curing agent was added and mixed evenly to obtain a super weather-resistant acrylic modified polysiloxane heavy-duty anti-corrosion coating, which was recorded as C4.

[0036] The filler is composed of nano silicon dioxide, nano calcium carbonate and nano boron nitride in a mass ratio of 1:1:1.

[0037] Comparative Example 2 Under an inert atmosphere, 100 g of isomethylvinyltrimethoxysilane, 70 g of glycidyl methacrylate, 5 g of sodium dodecyl sulfate and 3 g of azobisisobutyronitrile were reacted in a reactor at 70° C. for 5 h to obtain acrylic acid-modified polysiloxane, which was recorded as A5.

[0038] 80g of acrylic modified polysiloxane A5, 50g of epoxy oligosiloxane B1, 16g of xylene / isopropyl ketone / ethyl acetate, 0.6g of leveling agent and 1g of dispersant were mixed evenly in a container, and then 0.6g of defoamer, 40g of filler and 30g of pigment were added and mixed evenly, and then 1g of thickener and 6g of film-forming aid were added and mixed evenly, and finally 30g of curing agent was added and mixed evenly to obtain a super weather-resistant acrylic modified polysiloxane heavy-duty anti-corrosion coating, which was recorded as C5.

[0039] The filler is composed of nano silicon dioxide, nano calcium carbonate and nano boron nitride in a mass ratio of 1:1:1.

[0040] Comparative Example 3 130g of acrylic modified polysiloxane A1, 16g of xylene / isopropyl ketone / ethyl acetate, 0.6g of leveling agent and 1g of dispersant were mixed evenly in a container, and then 0.6g of defoamer, 40g of filler and 30g of pigment were added and mixed evenly, and then 1g of thickener and 6g of film-forming aid were added and mixed evenly, and finally 30g of curing agent was added and mixed evenly to obtain a super weather-resistant acrylic modified polysiloxane heavy-duty anti-corrosion coating, which was recorded as C6.

[0041] The filler is composed of nano silicon dioxide, nano calcium carbonate and nano boron nitride in a mass ratio of 1:1:1.

[0042] Comparative Example 4 130g of epoxy oligosiloxane B1, 16g of xylene / isopropyl ketone / ethyl acetate, 0.6g of leveling agent and 1g of dispersant were mixed evenly in a container, and then 0.6g of defoamer, 40g of filler and 30g of pigment were added and mixed evenly, and then 1g of thickener and 6g of film-forming aid were added and mixed evenly, and finally 30g of curing agent was added and mixed evenly to obtain a super weather-resistant acrylic modified polysiloxane heavy-duty anti-corrosion coating, which was recorded as C7.

[0043] The filler is composed of nano silicon dioxide, nano calcium carbonate and nano boron nitride in a mass ratio of 1:1:1.

[0044] Comparative Example 5 80g of acrylic modified polysiloxane A1, 50g of epoxy oligosiloxane B1, 16g of xylene / isopropyl ketone / ethyl acetate, 0.6g of leveling agent and 1g of dispersant were mixed evenly in a container, and then 0.6g of defoamer, 40g of filler and 30g of pigment were added and mixed evenly, and then 1g of thickener and 6g of film-forming aid were added and mixed evenly, and finally 30g of curing agent was added and mixed evenly to obtain a super weather-resistant acrylic modified polysiloxane heavy-duty anti-corrosion coating, which was recorded as C8.

[0045] Wherein, the filler is nano silicon dioxide.

[0046] Comparative Example 6 80g of acrylic modified polysiloxane A1, 50g of epoxy oligosiloxane B1, 16g of xylene / isopropyl ketone / ethyl acetate, 0.6g of leveling agent and 1g of dispersant were mixed evenly in a container, and then 0.6g of defoamer, 40g of filler and 30g of pigment were added and mixed evenly, and then 1g of thickener and 6g of film-forming aid were added and mixed evenly, and finally 30g of curing agent was added and mixed evenly to obtain a super weather-resistant acrylic modified polysiloxane heavy-duty anti-corrosion coating, which was recorded as C9.

[0047] Wherein, the filler is nano calcium carbonate.

[0048] Comparative Example 7 80g of acrylic modified polysiloxane A1, 50g of epoxy oligosiloxane B1, 16g of xylene / isopropyl ketone / ethyl acetate, 0.6g of leveling agent and 1g of dispersant were mixed evenly in a container, and then 0.6g of defoamer, 40g of filler and 30g of pigment were added and mixed evenly, and then 1g of thickener and 6g of film-forming aid were added and mixed evenly, and finally 30g of curing agent was added and mixed evenly to obtain a super weather-resistant acrylic modified polysiloxane heavy-duty anti-corrosion coating, which was recorded as C10.

[0049] Wherein, the filler is nano boron nitride.

[0050] The weather resistance and corrosion resistance of the paint films prepared in Examples 1-3 and Comparative Examples 1-7 were tested, wherein the weather resistance was based on GB / T 1865-2009; the corrosion resistance was based on GB / T 1771-2007; the test results are shown in Table 1.

[0051] Table 1 Coating performance test results Test sample Weather resistance Salt spray resistance (h) C1 4000h without blistering or shedding No blistering or shedding after 5000h; Level 1 powdering and Level 1 discoloration C2 4000h without blistering or shedding No blistering or shedding after 5000h; Level 1 powdering and Level 1 discoloration C3 4000h without blistering or shedding No blistering or shedding after 5000h; Level 1 powdering and Level 1 discoloration C4 3000h without blistering or shedding 3500h Slight bubbles, no peeling; Powdering level 2, discoloration level 3 C5 3500h Slight bubbles, no falling off 4000h: Slight bubbles, no peeling; Powdering level 2, color change level 2 C6 2100h Slight bubbles, no falling off 2700h Slight bubbles, no peeling; Powdering level 3, color change level 3 C7 2300h Slight bubbles, no falling off 3200h Slight bubbles, no peeling; Powdering level 3, discoloration level 3 C8 3600h Slightly bubbles, no falling off 4200h Slight bubbles, no peeling; Powdering level 1, discoloration level 2 C9 3300h Slight bubbles, no falling off 3600h Slight bubbles, no peeling; Powdering level 2, color change level 2 C10 3400h Slightly bubbles, no falling off 3900h Slight bubbles, no peeling; Powdering level 2, color change level 2 It can be seen from the test results of Table 1 that the super-weatherable acrylic modified polysiloxane heavy-duty anticorrosive coating prepared by the present invention has excellent weather resistance and corrosion resistance. It can be seen from the test results of Example 1 and Comparative Examples 1-2 and Comparative Examples 5-7 that the present invention prepares acrylic modified polysiloxane by using isomethyl vinyl trimethoxysilane, glycidyl methacrylate and ethyl isocyanate acrylate as monomers, and the selected filler is composed of nano silicon dioxide, nano calcium carbonate and nano boron nitride. The acrylic modified polysiloxane can form an irregular "maze effect" with the nano filler, thereby prolonging the diffusion time of the corrosive medium in the coating, thereby further improving the corrosion resistance of the coating; at the same time, the nano filler can also improve the corrosion resistance and weather resistance of the coating; it can be seen from the test results of Example 1 and Comparative Examples 3-4 that the coating of the present invention includes acrylic modified polysiloxane and epoxy oligosiloxane, and a dense coating structure can be formed between the two, which can not only synergistically resist the erosion of corrosive media such as acids, alkalis, and salts, but also is not easy to crack or peel off.

[0052] Although the embodiments of the present application have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present application. The scope of the present application is defined by the appended claims and their equivalents, and all shall be included in the scope of protection of the present application.

Claims

1. A method for preparing a super weather-resistant acrylic modified polysiloxane heavy-duty anticorrosive coating, characterized in that: The steps are as follows: S1: Preparation of acrylic modified polysiloxane; Under an inert atmosphere, isomethylvinyl trimethoxysilane, glycidyl methacrylate, ethyl isocyanate acrylate, sodium dodecyl sulfate and an initiator are reacted in a reactor to prepare acrylic acid-modified polysiloxane; S2: Preparation of epoxy oligosiloxane; 3-aminopropyltrimethoxysilane, hexadecyltrimethoxysilane, 3-glycidyloxypropyltrimethoxysilane, ethanol and water are uniformly mixed in a reaction container, and then hydrochloric acid is added for reflux reaction to obtain epoxy oligosiloxane; S3: Preparation of super weather-resistant acrylic modified polysiloxane heavy-duty anticorrosive coating; Mix acrylic modified polysiloxane, epoxy oligosiloxane, solvent, leveling agent and dispersant in a container, then add defoamer, filler and pigment and mix them evenly, then add thickener and film-forming aid and mix them evenly, finally add curing agent and mix well to obtain super weather-resistant acrylic modified polysiloxane heavy-duty anti-corrosion coating.

2. The method for preparing a super weather-resistant acrylic modified polysiloxane heavy-duty anticorrosive coating according to claim 1, characterized in that: The mass ratio of isomethylvinyltrimethoxysilane, glycidyl methacrylate, ethyl isocyanate acrylate, sodium dodecyl sulfate and initiator in S1 is 100:30-50:20-40:1-10:1-5.

3. The method for preparing a super weather-resistant acrylic modified polysiloxane heavy-duty anticorrosive coating according to claim 1, characterized in that: The reaction temperature in S1 is 60-80°C, and the reaction time is 4-6h.

4. The method for preparing a super weather-resistant acrylic modified polysiloxane heavy-duty anticorrosive coating according to claim 1, characterized in that: The initiator in S1 is one or more of benzoyl peroxide, lauroyl peroxide, dicumyl peroxide, di-tert-butyl peroxide, potassium persulfate, sodium persulfate, ammonium persulfate and azobisisobutyronitrile.

5. The method for preparing a super weather-resistant acrylic modified polysiloxane heavy-duty anticorrosive coating according to claim 1, characterized in that: The mass ratio of 3-aminopropyltrimethoxysilane, hexadecyltrimethoxysilane and 3-glycidyloxypropyltrimethoxysilane in S2 is 1:0.5-1:1-3.

6. The method for preparing a super weather-resistant acrylic modified polysiloxane heavy-duty anticorrosive coating according to claim 1, characterized in that: The reaction temperature in S2 is 55-65°C and the reaction time is 20-28h.

7. The method for preparing a super weather-resistant acrylic modified polysiloxane heavy-duty anticorrosive coating according to claim 1, characterized in that: S3 contains the following raw materials in parts by weight: 30-50 parts of acrylic modified polysiloxane, 20-30 parts of epoxy oligosiloxane, 5-10 parts of solvent, 0.1-0.5 parts of leveling agent, 0.1-1 parts of dispersant, 0.1-0.5 parts of defoaming agent, 10-30 parts of filler, 10-20 parts of pigment, 0.1-1 parts of thickener, 1-5 parts of film-forming aid, and 10-20 parts of curing agent.

8. The method for preparing a super weather-resistant acrylic modified polysiloxane heavy-duty anticorrosive coating according to claim 1, characterized in that: The solvent is one or more of xylene, isopropyl ketone and ethyl acetate; The leveling agent is one or more of polyether modified polysiloxane, acrylate leveling agent, fluorocarbon modified leveling agent, silicone leveling agent and polyacrylate leveling agent; The dispersant is one or more of a modified polysiloxane dispersant, a polycarboxylate dispersant, a phosphate dispersant and an acrylate dispersant; The defoamer is one or more of an organosilicon defoamer, a polyether-modified polysiloxane defoamer and a mineral oil-based defoamer; The pigment is one or more of titanium dioxide, carbon black, red iron oxide and phthalocyanine blue; The thickener is one or more of hydroxyethyl cellulose, polyurethane thickener, bentonite, acrylic thickener and magnesium aluminum silicate; The film-forming aid is one or more of dipropylene glycol methyl ether, dipropylene glycol butyl ether, ethylene glycol butyl ether, benzyl alcohol and dodecyl alcohol ester; The curing agent is one or more of aliphatic isocyanate, epoxy resin curing agent, polyurethane curing agent, water-soluble melamine formaldehyde resin and benzoguanamine formaldehyde resin.

9. The method for preparing a super weather-resistant acrylic modified polysiloxane heavy-duty anticorrosive coating according to claim 1, characterized in that: The filler is composed of nano silicon dioxide, nano calcium carbonate and nano boron nitride in a mass ratio of 3:1-9:1-9.

10. A super weather-resistant acrylic modified polysiloxane heavy-duty anticorrosive coating, characterized in that: The method is prepared by the method according to any one of claims 1 to 9.