Special high-adhesion air-drying paint for glass and preparation method of special high-adhesion air-drying paint

Abstract

The invention relates to the field of paint, in particular to special high-adhesion air-drying paint for glass and a preparation method of the special high-adhesion air-drying paint. The special high-adhesion air-drying paint for glass is prepared from the following raw materials: acrylic resin, fluorine-containing resin, a solvent, a wetting agent, an antioxidant, a functional aid, an adhesion promoter and the like. The finally prepared air-drying paint product can effectively maintain high adhesion to the glass surface, can further improve the wear resistance, the moisture resistance, the temperature resistance and other properties, and balances the contradiction between the high adhesion and other properties; the air-drying paint effectively reduces the probability that the air-drying paint is humidified, falls off or cracks in a specific use environment, remarkably improves the use quality, meets the comprehensive performance requirements of the existing glass paint field on the air-drying paint, and can be widely applied to the fields and environments.

Description

Technical Field

[0001] The present application relates to the field of paints, and more specifically to a high-adhesion self-drying paint for glass and a preparation method thereof. Background Art

[0002] Glass, an important building and decorative material, is widely used due to its transparency, hardness, and easy-to-clean properties. However, due to its smooth surface and high chemical inertness, conventional coatings often have difficulty forming a durable and strong adhesion layer on it, resulting in a decrease in durability and aesthetics. Therefore, high-adhesion, self-drying paints specifically designed for glass surfaces have emerged.

[0003] Air-drying paints are typically based on specific resin systems, such as polyvinyl butyral (PVB), acrylates, or modified alkyd resins, and utilize carefully selected solvent systems to ensure the coating dries quickly at room temperature and adheres firmly to the glass surface. To further enhance the adhesion and durability of the paint film, these formulations often incorporate various additives, such as epoxysilane coupling agents. These additives effectively promote chemical bonding between the paint film and the glass surface, significantly improving the coating's adhesion.

[0004] Although existing high-adhesion, self-drying paints for glass have made significant progress in improving adhesion and weather resistance, they still face some technical challenges. For example, there is a performance conflict between high adhesion and other properties. In certain applications, the paint film may not provide sufficient wear resistance and has a short service life. In complex climatic conditions, especially in conditions of high or fluctuating temperatures and high humidity, the paint film is prone to wetting, shedding, or cracking, which greatly affects the quality of the paint film. In summary, although existing technologies have greatly improved the performance of glass surface coatings, further research is still needed to overcome existing technical difficulties and improve the overall performance of the paint film. Summary of the Invention

[0005] Therefore, in order to effectively solve the above problems, the applicant has proposed a high-adhesion self-drying paint for glass and a preparation method thereof after continuous research on related topics. The self-drying paint product finally obtained by the present application can effectively maintain high adhesion to the glass surface while further improving its various properties such as wear resistance, moisture resistance and temperature resistance, balancing the contradiction between high adhesion and other properties, effectively reducing the probability of the self-drying paint becoming wet, falling off or cracking under specific usage environments, significantly improving the quality of use, meeting the comprehensive performance requirements of the existing glass paint field for self-drying paint, and having a wide range of application fields and environments.

[0006] A high-adhesion self-drying paint specially used for glass consists of the following raw materials, calculated by weight: 70-100 parts of acrylic resin, 20-30 parts of fluorine-containing resin, 30-50 parts of solvent, 2-5 parts of wetting agent, 0.8-1.5 parts of antioxidant, 1-2 parts of ultraviolet absorber, 6-12 parts of functional additive, 0.6-1.1 parts of leveling agent, 0.2-0.3 parts of defoaming agent, 2-4 parts of adhesion promoter, 3-8 parts of plasticizer, 5-15 parts of curing agent and 1-3 parts of dehydrating agent.

[0007] As a preferred solution, the acrylic resin is a hydroxy acrylic resin.

[0008] As a preferred solution, the hydroxyl content of the hydroxy acrylic resin is 2-5%.

[0009] As a preferred solution, the hydroxyl content of the hydroxy acrylic resin is 2.5-3.5%.

[0010] As a preferred solution, the viscosity of the hydroxy acrylic resin is 2500-4500 mPa·s at 25°C.

[0011] As a preferred solution, the mass ratio of the acrylic resin, the fluorine-containing resin and the plasticizer is (75-90): (23-28): (4-7).

[0012] As a preferred solution, the mass ratio of the acrylic resin, the fluorine-containing resin and the plasticizer is (80-85): (23-28): (4-7).

[0013] As a preferred solution, the fluorine-containing resin is a fluorine-containing copolymer resin.

[0014] As a preferred solution, the preparation method of the fluorine-containing copolymer resin specifically includes the following steps: S1: adding butyl acetate to a reaction container, heating, adding perfluoroalkylethyl acrylate, trimethylsiloxy methacrylate, dodecyl vinyl ether and glycidyl acrylate in proportion and stirring; S2: adding azobisisobutyronitrile in equal parts to the reaction container, controlling the temperature for reaction; S3: after the reaction is completed, cooling to and filtering the material, and controlling the solid content to be ≥70% to obtain the product.

[0015] As a preferred solution, the preparation method of the fluorine-containing copolymer resin specifically includes the following steps: S1: adding butyl acetate to a reaction vessel, heating to 80-85°C, then adding perfluoroalkylethyl acrylate, trimethylsiloxymethyl methacrylate, dodecyl vinyl ether and glycidyl acrylate in proportion, and stirring at 600-800 rpm; S2: adding azobisisobutyronitrile to the reaction vessel in four equal portions, during which the temperature is controlled at 85-90°C, with an interval of 15-20 minutes between each addition, and then keeping the temperature for reaction for 7-8 hours; S3: after the reaction is completed, cooling to 45-50°C, filtering the material, and controlling the solid content to be ≥70%.

[0016] As a preferred solution, the mass ratio of the perfluoroalkylethyl acrylate, trimethylsiloxy methacrylate, dodecyl vinyl ether and glycidyl acrylate is (5-6): (2-3): (1-1.5): (0.6-1).

[0017] As a preferred solution, the mass ratio of the perfluoroalkylethyl acrylate, trimethylsiloxy methacrylate, dodecyl vinyl ether and glycidyl acrylate is (5-5.5): (2-2.5): (1.2-1.3): (0.6-0.8).

[0018] By adding the above-mentioned fluorine-containing copolymer resin, the adhesion, temperature resistance, moisture resistance and corrosion resistance of the high-adhesion self-drying paint for glass can be greatly improved. The glycidyl acrylate present in the copolymer resin provides epoxy groups to form a connection with the main hydroxyl acrylic resin, and through the low surface energy characteristics of the fluorine-containing acrylate, it can penetrate into the micropores on the glass surface to form a "hook-shaped" physical anchoring structure, thereby effectively improving the adhesion of the self-drying paint. Secondly, the siloxane chain segment forms a longer molecular chain segment, promotes the formation of a three-dimensional cross-linked network, inhibits the thermal motion of the molecular chain, and promotes the improvement of the resistance of the internal molecular chain segments of the self-drying paint to molecular chain slippage in a high-temperature environment by enhancing the interaction force between the molecular chains and higher bond energy, and delays thermal decomposition.

[0019] Finally, the extremely low surface energy of the perfluoroalkyl chain can not only block the penetration of liquid water on the paint surface, but also assist the siloxane hydrolysis products to react with metal impurities on the glass surface to form a silicate passivation film to inhibit corrosion. Furthermore, the presence of long-chain alkyl groups gives the resin molecular chain flexibility, lowers the glass transition temperature, promotes solvent volatilization and chain segment movement, and thus effectively ensures the comprehensive performance of the self-drying paint.

[0020] As a preferred solution, the solvent is propylene glycol methyl ether acetate.

[0021] As a preferred solution, the mass ratio of the acrylic resin to the solvent is (75-90):(40-50).

[0022] As a preferred solution, the wetting agent is at least one of polyurethanes, phosphates, polyacrylic acids and sulfonates.

[0023] As a preferred solution, the wetting agent is polyurethane.

[0024] As a preferred solution, the antioxidant is at least one of distearyl thiodipropionate, 2,2'-thiobis(4-methyl-6-tert-butylphenol) and pentaerythritol tetrakis[β-(3,5-di-tert-butyl-4-hydroxyphenyl)propionate].

[0025] As a preferred solution, the antioxidant is pentaerythritol tetrakis[β-(3,5-di-tert-butyl-4-hydroxyphenyl)propionate].

[0026] As a preferred solution, the ultraviolet absorber is at least one of benzotriazole derivatives, triazines, salicylates and hindered amines.

[0027] As a preferred solution, the ultraviolet absorber is a benzotriazole derivative.

[0028] As a preferred solution, the functional auxiliary agent is a composition of polyimide, zinc phosphomolybdate and aluminum oxide.

[0029] As a preferred solution, the mass ratio of the polyimide, zinc phosphomolybdate and aluminum oxide is (4-5.5): (2-2.5): (0.6-1).

[0030] As a preferred solution, the mass ratio of the polyimide, zinc phosphomolybdate and aluminum oxide is (4.5-5): (2-2.2): (0.6-0.8).

[0031] As a preferred solution, the average particle size of the aluminum oxide is 30 to 60 nm.

[0032] As a preferred solution, the leveling agent is at least one of polyether-modified siloxanes, modified polyacrylates and modified silicones.

[0033] As a preferred solution, the leveling agent is polyether-modified siloxane BYK-3455.

[0034] As a preferred solution, the defoaming agent is at least one of silicone defoaming agents.

[0035] As a preferred solution, the adhesion promoter is at least one of a titanium-aluminum composite composition, a zirconate complex and zinc borate particles.

[0036] As a preferred solution, the adhesion promoter is a titanium-aluminum composite composition or a zirconate complex.

[0037] As a preferred solution, the plasticizer is a composition of epoxidized soybean oil and acetyl tributyl citrate.

[0038] As a preferred solution, the mass ratio of the epoxidized soybean oil to acetyl tributyl citrate is (7-10):(2-4).

[0039] As a preferred solution, the mass ratio of the epoxidized soybean oil to acetyl tributyl citrate is (8.5-9):(2.5-3).

[0040] As a preferred solution, the curing agent is an isocyanate curing agent.

[0041] As a preferred solution, the dehydrating agent is triethyl orthoformate.

[0042] The preparation method of high-adhesion self-drying paint for glass specifically includes the following steps: S1: adding acrylic resin, solvent and wetting agent into a dispersion kettle, stirring at 800-1000 rpm for 15-20 minutes, controlling the temperature to 30-35°C, slowly adding fluorine-containing resin, and stirring at 600-800 rpm for 20-25 minutes to ensure compatibility with the acrylic resin; S2: adding functional additives, switching to a high-speed disperser for high-speed dispersion at 1500-2000 rpm for 40-45 minutes, controlling the temperature to 40-45°C, and then adding the remaining raw materials except the plasticizer and curing agent in sequence, stirring at 600-800 rpm for 15-20 minutes each time; S3: after the stirring is completed, grinding with a sand mill to a fineness of ≤10μm, adding a plasticizer to adjust the viscosity to Tu-4 cup at 25°C for 35-45s, finally adding a curing agent and stirring and mixing, and then filtering through a 400-500 mesh sieve to obtain the product.

[0043] This application has the following beneficial effects:

[0044] 1. The high-adhesion self-drying paint for glass finally prepared in this application can not only effectively maintain high adhesion to the glass surface, but also further improve its various properties such as wear resistance, moisture resistance and temperature resistance, balance the contradiction between high adhesion and other properties, and effectively reduce the probability of the self-drying paint becoming wet, falling off or cracking under specific use environments, significantly improve the quality of use, meet the comprehensive performance requirements of the existing glass paint field for self-drying paint, and have a wide range of application fields and environments.

[0045] 2. The high-adhesion self-drying paint for glass finally prepared by this application can greatly improve the adhesion, temperature resistance, moisture resistance and corrosion resistance of the high-adhesion self-drying paint for glass by adding fluorine-containing copolymer resin; the glycidyl acrylate present in the copolymer resin provides epoxy groups to form a connection with the main hydroxyl acrylic resin, and through the low surface energy characteristics of the fluorine-containing acrylate, it penetrates into the micropores on the glass surface to form a "hook-shaped" physical anchoring structure, thereby effectively improving the adhesion of the self-drying paint. Secondly, the siloxane chain segment forms a longer molecular chain segment, promotes the formation of a three-dimensional cross-linked network, inhibits the thermal motion of the molecular chain, and promotes the improvement of the resistance of the molecular chain segments inside the self-drying paint to molecular chain slippage in a high-temperature environment by enhancing the interaction force between the molecular chains and higher bond energy, and delays thermal decomposition.

[0046] 3. The high-adhesion self-drying paint for glass finally prepared by the present application has a fluorine-containing copolymer resin whose perfluoroalkyl chain has extremely low surface energy, which can not only block the penetration of liquid water on the paint surface, but also assist the siloxane hydrolysis products to react with metal impurities on the glass surface to form a silicate passivation film to inhibit corrosion. Furthermore, the presence of long-chain alkyl groups gives the resin molecular chain flexibility, lowers the glass transition temperature, promotes solvent volatilization and chain segment movement, and thus effectively ensures the comprehensive performance of the self-drying paint. BRIEF DESCRIPTION OF THE DRAWINGS

[0047] Figure 1 This is a surface electron microscope image of the high-adhesion self-drying paint for glass prepared in Example 1 of the present application. DETAILED DESCRIPTION

[0048] Example 1

[0049] High-adhesion self-drying paint specially made for glass, calculated by mass, consists of the following raw materials: 83 parts of acrylic resin, 27 parts of fluorine-containing resin, 49.5 parts of solvent, 2.3 parts of wetting agent, 0.9 parts of antioxidant, 1.2 parts of UV absorber, 8.5 parts of functional additive, 0.8 parts of leveling agent, 0.3 parts of defoaming agent, 2.8 parts of adhesion promoter, 5.5 parts of plasticizer, 8.8 parts of curing agent, and 2.1 parts of dehydrating agent.

[0050] The acrylic resin is a hydroxy acrylic resin with a hydroxy content of 3%, a viscosity of 3500 mPa·s at 25° C., and is purchased from Royal DSM of the Netherlands under the model AC-2604.

[0051] The fluorine-containing resin is a fluorine-containing copolymer resin, and the preparation method specifically includes the following steps, calculated by mass: S1: adding 50 parts of butyl acetate to a reaction container, heating to 80°C, then adding 5.5 parts of perfluoroalkylethyl acrylate, 2.2 parts of trimethylsiloxymethyl methacrylate, 1.2 parts of dodecyl vinyl ether and 0.7 parts of glycidyl acrylate, and stirring at 800 rpm; S2: adding 0.2 parts of azobisisobutyronitrile to the reaction container in four equal portions, during which the temperature is controlled at 90°C, with an interval of 20 minutes between each addition, and keeping the temperature for reaction for 8 hours after completion; S3: after the reaction is completed, cooling to 50°C, filtering and discharging the material, and the solid content is 75%.

[0052] The solvent is propylene glycol methyl ether acetate; the wetting agent is polyurethane BYK-190; the antioxidant is pentaerythritol tetrakis[β-(3,5-di-tert-butyl-4-hydroxyphenyl)propionate] antioxidant 1010; the UV absorber is benzotriazole derivative Tinuvin 400; the leveling agent is polyether modified siloxane BYK-3455; the defoamer is silicone defoamer BYK-065; and the adhesion promoter is zirconate coupling NZ97.

[0053] The plasticizer is a combination of epoxidized soybean oil and acetyl tributyl citrate in a mass ratio of 9:2.5. The epoxidized soybean oil was purchased from Shandong Kexing Chemical Co., Ltd. in China as a national standard industrial grade plasticizer.

[0054] The curing agent is an isocyanate curing agent, which is a Desmodur BL 3175SN product purchased from Covestro, Germany; the dehydrating agent is triethyl orthoformate.

[0055] The functional additive is a composition of polyimide, zinc phosphomolybdate and aluminum oxide, with a mass ratio of 4.5:2.2:0.8.

[0056] The average particle size of aluminum oxide is 40 nm; polyimide was purchased from Shandong Qiyuan Chemical Co., Ltd., China, as a high-quality powder product.

[0057] The preparation method of high-adhesion self-drying paint for glass specifically includes the following steps: S1: adding acrylic resin, solvent and wetting agent into a dispersion kettle, stirring at 1000 rpm for 20 minutes, controlling the temperature to 35°C, slowly adding fluorine-containing resin, and stirring at 800 rpm for 25 minutes to ensure compatibility with acrylic resin; S2: adding functional additives, switching to a high-speed disperser at 2000 rpm for high-speed dispersion for 40 minutes, controlling the temperature to 45°C, and then adding the remaining raw materials except the plasticizer and curing agent in sequence, stirring at 600 rpm for 20 minutes each time; S3: after the stirring is completed, grinding with a sand mill to a fineness of 4.5 μm, adding a plasticizer to adjust the viscosity to 38 seconds at 25°C, finally adding a curing agent and stirring and mixing, and then filtering through a 500-mesh sieve to obtain the product.

[0058] The surface morphology of the high adhesion self-drying paint for glass finally obtained in this embodiment is as follows: Figure 1 shown.

[0059] Example 2

[0060] The only difference between this embodiment and embodiment 1 is as follows:

[0061] High-adhesion self-drying paint specially made for glass, calculated by mass, consists of the following raw materials: 80 parts of acrylic resin, 25 parts of fluorine-containing resin, 42.5 parts of solvent, 2.1 parts of wetting agent, 0.8 parts of antioxidant, 1.1 parts of UV absorber, 9 parts of functional additive, 0.8 parts of leveling agent, 0.2 parts of defoaming agent, 2.5 parts of adhesion promoter, 5 parts of plasticizer, 9.1 parts of curing agent, and 2 parts of dehydrating agent.

[0062] Example 3

[0063] The only difference between this embodiment and embodiment 1 is as follows:

[0064] High-adhesion self-drying paint specially made for glass, calculated by mass, consists of the following raw materials: 90 parts of acrylic resin, 23 parts of fluorine-containing resin, 45 parts of solvent, 2.6 parts of wetting agent, 0.8 parts of antioxidant, 1.3 parts of UV absorber, 7.5 parts of functional additive, 0.8 parts of leveling agent, 0.2 parts of defoaming agent, 3 parts of adhesion promoter, 6.5 parts of plasticizer, 8.6 parts of curing agent, and 1.9 parts of dehydrating agent.

[0065] Comparative Example 1

[0066] This comparative example differs from Example 1 only in the following ways:

[0067] High-adhesion self-drying paint specially made for glass, calculated by mass, consists of the following raw materials: 100 parts of acrylic resin, 10 parts of fluorine-containing resin, 49.5 parts of solvent, 2.3 parts of wetting agent, 0.9 parts of antioxidant, 1.2 parts of UV absorber, 8.5 parts of functional additive, 0.8 parts of leveling agent, 0.3 parts of defoaming agent, 2.8 parts of adhesion promoter, and 5.5 parts of plasticizer.

[0068] Comparative Example 2

[0069] This comparative example differs from Example 1 only in the following ways:

[0070] High-adhesion self-drying paint specially made for glass, calculated by mass, consists of the following raw materials: 90 parts of acrylic resin, 25 parts of fluorine-containing resin, 49.5 parts of solvent, 2.3 parts of wetting agent, 0.9 parts of antioxidant, 1.2 parts of UV absorber, 2.5 parts of functional additive, 0.8 parts of leveling agent, 0.3 parts of defoaming agent, 2.8 parts of adhesion promoter, and 5.5 parts of plasticizer.

[0071] Comparative Example 3

[0072] The only difference between this comparative example and Example 1 is that the fluorine-containing resin is a fluorine-containing copolymer resin, and the preparation method specifically comprises the following steps, calculated in parts by mass: S1: adding 50 parts of butyl acetate to a reaction vessel, heating to 80°C, then adding 10.5 parts of perfluoroalkylethyl acrylate, 0.5 parts of trimethylsiloxymethyl methacrylate, 0.6 parts of dodecyl vinyl ether and 1.5 parts of glycidyl acrylate, and stirring at 800 rpm; S2: adding 0.2 parts of azobisisobutyronitrile to the reaction vessel in four equal portions, during which the temperature is controlled at 90°C, with an interval of 20 minutes between each addition, and keeping the reaction warm for 8 hours after completion; S3: after the reaction is completed, cooling to 50°C, filtering and discharging the material, and obtaining the product with a solid content of 75%.

[0073] Comparative Example 4

[0074] The only difference between this comparative example and Example 1 is that the fluorine-containing resin is a fluorine-containing copolymer resin, and the preparation method specifically comprises the following steps, calculated in parts by mass: S1: adding 50 parts of butyl acetate to a reaction vessel, heating to 80°C, then adding 5.5 parts of perfluoroalkylethyl acrylate, 5.5 parts of trimethylsiloxymethyl methacrylate, 2.5 parts of dodecyl vinyl ether and 0.1 part of glycidyl acrylate, and stirring at 800 rpm; S2: adding 0.2 parts of azobisisobutyronitrile to the reaction vessel in four equal portions, during which the temperature is controlled at 90°C, with an interval of 20 minutes between each addition, and keeping the reaction warm for 8 hours after completion; S3: after the reaction is completed, cooling to 50°C, filtering and discharging the material, and obtaining the product with a solid content of 75%.

[0075] Comparative Example 5

[0076] The only difference between this comparative example and Example 1 is that the functional auxiliary agent is a composition of polyimide, zinc phosphomolybdate and aluminum oxide, with a mass ratio of 5:1:0.2.

[0077] Comparative Example 6

[0078] The only difference between this comparative example and Example 1 is that the functional auxiliary agent is a composition of polyimide, zinc phosphomolybdate and aluminum oxide, with a mass ratio of 1:3:4.

[0079] Performance Testing

[0080] 1. Adhesion: Refer to ASTM D3359 standard, spray the self-drying paint on a clean glass substrate with a size of 100×100×5mm, cure at room temperature for 24 hours, and the dry film thickness is 30±2μm. Use a six-blade cutting knife with a blade distance of 2mm to cut 10×10 1mm squares on the coating surface. 2 Grid, stick 3M 600# tape, and tear it off vertically at a constant speed of 1cm / s. According to the letter grading method specified in the standard, the test grade is determined according to the proportion of the coating peeling area. The results are recorded in Table 1.

[0081] 2. Heat resistance: Place the coating sample of the air-drying paint in a heat resistance test chamber, raise the temperature to 200°C at 5°C / min, maintain for 4 hours, and naturally cool to room temperature. Observe the cracking of the coating surface and use a colorimeter to test the color change before and after the test. Take the ΔE values of 10 tests and record them in Table 1.

[0082] 3. Resistance to humidity and heat cycling: Test the adhesion of the air-drying paint coating sample before and after the cycle at 85°C, 85% RH for 8 hours, then 25°C, 100% RH for 16 hours for 504 hours using the method in Performance Test 1. Record the adhesion grade after the cycle test in Table 1.

[0083] 4. Corrosion resistance: Refer to ASTM B117, salt spray conditions: 5% NaCl solution, pH 6.5-7.2, chamber temperature 35±2°C, continuous spray, test duration 1800 hours, examine the coating corrosion extension width (measured from the scratch edge), and take the average of 10 tests and record them in Table 1.

[0084] Table 1 Performance test results of embodiments and comparative examples

[0085]

[0086]

[0087] Judging from the final performance test results of the embodiments and comparative examples, comparative examples 1 to 6 achieved worse performance results than the embodiments, while the embodiments adopted a better technical solution to obtain a better fluorinated copolymer resin, and worked together with the functional auxiliary agent composition. The extremely low surface energy of the perfluoroalkyl chain in the fluorinated copolymer resin can not only block the penetration of liquid water on the paint surface, but also assist the siloxane hydrolysis product to react with the metal impurities on the glass surface to form a silicate passivation film to inhibit corrosion. Furthermore, the presence of long-chain alkyl groups gives the resin molecular chain flexibility, lowers the glass transition temperature, promotes solvent volatilization and chain segment movement, and thus effectively ensures the comprehensive performance of the self-drying paint.

Claims

1. A high-adhesion self-drying paint for glass, characterized by: The raw materials include, by mass: 70-100 parts of acrylic resin, 20-30 parts of fluorine-containing resin, 30-50 parts of solvent, 6-12 parts of functional additive, 3-8 parts of plasticizer, and 5-15 parts of curing agent; The fluorine-containing resin is a fluorine-containing copolymer resin, and the preparation method comprises: S1: adding perfluoroalkylethyl acrylate, trimethylsiloxy methacrylate, dodecyl vinyl ether and glycidyl acrylate to butyl acetate and stirring; S2: adding azobisisobutyronitrile in equal parts to a reaction vessel and reacting under controlled temperature; S3: after the reaction is completed, cooling to 40°C and filtering the material to obtain the product, controlling the solid content to ≥70%. The mass ratio of the perfluoroalkylethyl acrylate, trimethylsiloxy methacrylate, dodecyl vinyl ether and glycidyl acrylate is (5-6): (2-3): (1-1.5): (0.6-1).

2. The high-adhesion self-drying paint for glass according to claim 1, characterized in that: The acrylic resin is a hydroxy acrylic resin, and the hydroxy content thereof is 2-5%.

3. The high-adhesion self-drying paint for glass according to claim 2, characterized in that: The viscosity of the hydroxy acrylic resin is 2500-4500 mPa·s at 25°C.

4. The high-adhesion self-drying paint for glass according to claim 3, characterized in that: The mass ratio of the acrylic resin, the fluorine-containing resin and the plasticizer is (75-90): (23-28): (4-7).

5. The high-adhesion self-drying paint for glass according to claim 4, characterized in that: The mass ratio of the acrylic resin to the solvent is (75-90): (40-50).

6. The high-adhesion self-drying paint for glass according to claim 5, characterized in that: The functional auxiliary agent is a composition of polyimide, zinc phosphomolybdate and aluminum oxide.

7. The high-adhesion self-drying paint for glass according to claim 6, characterized in that: The mass ratio of the polyimide, zinc phosphomolybdate and aluminum oxide is (4-5.5): (2-2.5): (0.6-1); and the average particle size of the aluminum oxide is 30-60 nm.

8. The high-adhesion self-drying paint for glass according to claim 7, characterized in that: The raw materials also include, by mass: 2 to 5 parts of wetting agent, 0.8 to 1.5 parts of antioxidant, 1 to 2 parts of ultraviolet absorber, 0.6 to 1.1 parts of leveling agent, 0.2 to 0.3 parts of defoaming agent, 2 to 4 parts of adhesion promoter, and 1 to 3 parts of dehydrating agent.

9. The high-adhesion self-drying paint for glass according to claim 8, characterized in that: The leveling agent is at least one of polyether-modified siloxanes, modified polyacrylates and modified silicones; the plasticizer is a composition of epoxy soybean oil and acetyl tributyl citrate, with a mass ratio of (7-10): (2-4).

10. A method for preparing a high-adhesion self-drying paint for glass according to claim 8, characterized in that: The specific steps include: S1: Add acrylic resin, solvent and wetting agent into the dispersion kettle, stir at 800-1000 rpm for 15-20 minutes, control the temperature to 30-35°C, slowly add fluorine-containing resin, stir at 600-800 rpm for 20-25 minutes to ensure compatibility with acrylic resin; S2: Add functional additives, switch to high-speed disperser at 1500-2000 rpm for 40-45 minutes, control the temperature to 40-45°C, then add the remaining raw materials except plasticizer and curing agent in sequence, stirring at 600-800 rpm for 15-20 minutes each time; S3: After stirring, grind with a sand mill to a fineness of ≤10μm, add plasticizer to adjust the viscosity to Co-4 cup at 25°C for 35-45s, finally add curing agent and stir to mix, then filter through a 400-500 mesh sieve to obtain.

Images