Fluorinated epoxy organic silicon resin as well as preparation method and application thereof

By grafting epoxy groups and fluorine-containing groups onto hydrogenated silicone resin, the problem of poor compatibility between nanoparticles and organic substrates is solved, and the high performance and high transmittance of the wear-resistant and anti-fouling coating are achieved, which is suitable for the optical industry.

CN120665293APending Publication Date: 2025-09-19GUANGDONG BINHAO TRAVELWARE +1
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Patent Information

Application Number
CN202510917962.1
Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
Filing Date
2025-07-03
Publication Date
2025-09-19

AI Technical Summary

Technical Problem

The interaction force between existing nanoparticles and organic substrates is relatively small, resulting in poor dispersion and uneven distribution of the composite materials, low light transmittance, and insufficient coating hardness and wear resistance, making it impossible to fully exert the role of functionalized nanoparticles.

Method used

Through the hydrosilylation reaction, epoxy groups and fluorine-containing groups are grafted onto the surface of hydrogenated silicone resin to improve the compatibility with organic polymer substrates, and the low surface energy and low friction coefficient of silicone resin are utilized to prepare wear-resistant and anti-fouling coatings.

Benefits of technology

It improves the wear resistance and anti-fouling properties of the coating, enhances its compatibility with organic polymer substrates, and maintains good light transmittance, making it suitable for industries with high requirements on appearance, such as optics.

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Abstract

The invention relates to fluorinated epoxy organic silicon resin as well as a preparation method and application thereof. The fluorinated epoxy organic silicon resin comprises hydrogen-containing silicon resin, allyl glycidyl ether grafted on the hydrogen-containing silicon resin through a carbon-carbon double bond and fluorinated acrylate grafted on the hydrogen-containing silicon resin through a carbon-carbon double bond. The preparation method comprises the following steps: S1, dissolving allyl glycidyl ether, fluorine-containing acrylate and a catalyst in a low-polarity solvent to obtain a solution A; s2, dissolving hydrogen-containing silicon resin in a low-polarity solvent to obtain a solution B; s3, dropwise adding the solution B obtained in the step S2 into the solution A obtained in the step S1 under the protection of nitrogen and in a heat preservation state, and reacting to obtain the fluorinated epoxy organic silicon resin. The fluorinated epoxy organic silicon resin is used as a reactive additive for preparing an organic polymer-based wear-resistant antifouling coating. According to the present invention, the compatibility with the organic polymer substrate can be effectively improved, and the wear resistance and the antifouling property of the coating can be improved.
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Description

Technical Field

[0001] The present invention relates to the technical field of polymer materials, and in particular to a fluorinated epoxy silicone resin, a preparation method and application thereof. Background Art

[0002] Adding functionalized nanoparticles to organic / inorganic nanocomposites can improve the composites' rigidity, hardness, wear resistance, and antifouling properties. In particular, nanoparticles containing low-surface-energy elements such as fluorine and silicon offer heat resistance, low surface energy, low friction coefficient, hydrophobicity, and antifouling properties. Composite materials prepared from these nanoparticles exhibit properties such as high-temperature resistance, wear resistance, antifouling, and corrosion resistance. However, most nanoparticles lack reactive groups that interact with organic substrates, and are simply blended with them. This results in poor dispersibility and uneven distribution within the organic substrate, as well as weak interaction forces at the organic / inorganic interface. This prevents the functionalized nanoparticles from fully realizing their potential, and the resulting composites also have low light transmittance, impacting their use in industries such as optics that place high demands on appearance.

[0003] Chinese patent CN 111100524 A discloses an epoxy polymer with hydrophobic and oleophobic properties. The preparation method is as follows: in a 50°C water bath, episulfide resin and epoxy resin are mixed, stirred, and bubbles are removed. The mixture is cooled to room temperature, and a curing agent and fluorinated silicone are added, stirred, and poured into a silicone mold. The mixture is cured at room temperature for 12 hours, and then transferred to a 60°C oven for curing for 1 hour. The epoxy resin is selected from bisphenol A epoxy resin or bisphenol F epoxy resin; and the curing agent is selected from an anhydride curing agent, an aromatic amine curing agent, and an aliphatic amine curing agent. The epoxy polymer with hydrophobic and oleophobic properties of the present invention has a refractive index of 1.5 or above, close to that of glass, and a transmittance of 80% or above. The epoxy polymer can be applied as a coating on optical materials. When applied to the glass surface, the epoxy polymer can achieve both oil and water repellency, with a hydrophobic angle greater than 130°, which can maintain the light transmittance of the glass under special conditions and improve its reliability. However, the coating prepared from the epoxy polymer has low hardness, poor wear resistance, and a short service life. Summary of the Invention

[0004] Based on this, it is necessary to provide a fluorinated epoxy silicone resin, a preparation method and application thereof to address the above-mentioned problems.

[0005] A fluorinated epoxy silicone resin comprises a hydrogenated silicone resin, allyl glycidyl ether grafted onto the hydrogenated silicone resin via a carbon-carbon double bond, and a fluorinated acrylate grafted onto the hydrogenated silicone resin via a carbon-carbon double bond.

[0006] As a preferred embodiment, the molecular structure of the fluorinated epoxy silicone resin is as follows:

[0007]

[0008] As a preferred embodiment, the molecular structure of the hydrogenated silicone resin is as follows:

[0009]

[0010] As a preferred solution, the hydrogen content of the hydrogen-containing silicone resin is 0.3% to 2.0%.

[0011] As a preferred embodiment, the molecular structure of the allyl glycidyl ether is as follows:

[0012]

[0013] As a preferred embodiment, the molecular structure of the fluorinated acrylate is as follows:

[0014]

[0015] Here, n is an integer from 3 to 15.

[0016] A method for preparing the fluorinated epoxy silicone resin as described above comprises the following steps:

[0017] S1, dissolving allyl glycidyl ether, fluorinated acrylate and a catalyst in a low-polarity solvent to obtain a solution A;

[0018] S2, dissolving the hydrogenated silicone resin in a low-polarity solvent to obtain a solution B;

[0019] S3. Under nitrogen protection and heat preservation, the solution B obtained in S2 is added dropwise to the solution A obtained in S1 to react and obtain a fluorinated epoxy silicone resin.

[0020] As a preferred solution, the catalyst in S1 is chloroplatinic acid, and the catalyst accounts for 0.002‰ to 0.015‰ of the total mass of the reaction system.

[0021] As a preferred embodiment, the low polarity solvent in S1 and S2 is toluene, benzene, xylene, hexane, heptane, ethyl acetate, butyl acetate, heptyl acetate or a mixture thereof.

[0022] As a preferred embodiment, the molar amount of the allyl glycidyl ether is 10% to 99% of the molar amount of hydrogen in the hydrogen-containing silicone resin.

[0023] As a preferred solution, the molar amount of the fluorine-containing acrylate is 1% to 10% of the molar amount of hydrogen in the hydrogen-containing silicone resin.

[0024] As a preferred embodiment, the reaction temperature in S3 is 85°C.

[0025] As a preferred embodiment, after the reaction in S3 is completed, the solution temperature is reduced to 30°C, and then filtered through an activated carbon column to remove the catalyst in the reaction solution. The unreacted small amount of alkenyl glycidyl ether, fluorinated acrylate and low-polarity solvent are then removed by vacuum distillation to obtain a fluorinated epoxy silicone resin.

[0026] The fluorinated epoxy silicone resin prepared by the above-mentioned preparation method is used as a reactive additive to prepare an organic polymer-based wear-resistant and antifouling coating.

[0027] The present invention simultaneously grafts epoxy groups and fluorine-containing groups onto the surface of hydrogenated silicone resin through a hydrosilylation reaction. Due to the property that the epoxy groups can react with corresponding groups such as carboxyl, amino, hydroxyl, and acid anhydride in the organic polymer substrate, the compatibility with the organic polymer substrate is improved. At the same time, the low surface energy and low friction coefficient of the organic silicone resin and the fluorine-containing group are utilized to improve the wear resistance and anti-fouling properties of the coating. The prepared coating has good light transmittance and can be used in industries with high requirements on appearance, such as optics. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] Figure 1 FIG1 is a synthetic reaction equation diagram of the fluorinated epoxy silicone resin of the present invention;

[0029] Figure 2 is the FTIR spectrum of the fluorinated epoxy silicone resin of the present invention;

[0030] Figure 3 The fluorinated epoxy silicone resin of the present invention 19 F NMR spectrum;

[0031] Figure 4 These are scanning electron microscope images of the acrylic copolymer / fluorinated silicone coating of the present invention (a is a scanning electron microscope image of the cross section of the acrylic copolymer / fluorinated silicone coating, and b is a scanning electron microscope image of the surface of the acrylic copolymer / fluorinated silicone coating). DETAILED DESCRIPTION

[0032] The endpoints of the ranges and any values ​​disclosed herein are not limited to the precise ranges or values, and these ranges or values ​​should be understood to include values ​​close to these ranges or values. For numerical ranges, the endpoints of each range, the endpoints of each range and individual point values, and the individual point values ​​can be combined with each other to obtain one or more new numerical ranges, which should be considered to be specifically disclosed herein.

[0033] The following is a detailed description of the specific embodiments of the present invention. It should be understood that the specific embodiments described herein are only used to illustrate and explain the present invention and are not intended to limit the present invention.

[0034] A fluorinated epoxy silicone resin comprises a hydrogenated silicone resin, allyl glycidyl ether grafted onto the hydrogenated silicone resin via a carbon-carbon double bond, and a fluorinated acrylate grafted onto the hydrogenated silicone resin via a carbon-carbon double bond.

[0035] As a preferred embodiment, the molecular structure of the fluorinated epoxy silicone resin is as follows:

[0036]

[0037] As a preferred embodiment, the molecular structure of the hydrogenated silicone resin is as follows:

[0038]

[0039] As a preferred solution, the hydrogen content of the hydrogen-containing silicone resin is 0.3% to 2.0%.

[0040] As a preferred embodiment, the molecular structure of the allyl glycidyl ether is as follows:

[0041]

[0042] As a preferred embodiment, the molecular structure of the fluorinated acrylate is as follows:

[0043]

[0044] Here, n is an integer from 3 to 15.

[0045] A method for preparing the fluorinated epoxy silicone resin as described above comprises the following steps:

[0046] S1, dissolving allyl glycidyl ether, fluorinated acrylate and a catalyst in a low-polarity solvent to obtain a solution A;

[0047] S2, dissolving the hydrogenated silicone resin in a low-polarity solvent to obtain a solution B;

[0048] S3. Under nitrogen protection and heat preservation, the solution B obtained in S2 is added dropwise to the solution A obtained in S1 to react and obtain a fluorinated epoxy silicone resin.

[0049] As a preferred solution, the catalyst in S1 is chloroplatinic acid, and the catalyst accounts for 0.002‰ to 0.015‰ of the total mass of the reaction system.

[0050] As a preferred embodiment, the low polarity solvent in S1 and S2 is toluene, benzene, xylene, hexane, heptane, ethyl acetate, butyl acetate, heptyl acetate or a mixture thereof.

[0051] As a preferred embodiment, the molar amount of the allyl glycidyl ether is 10% to 99% of the molar amount of hydrogen in the hydrogen-containing silicone resin.

[0052] As a preferred solution, the molar amount of the fluorine-containing acrylate is 1% to 10% of the molar amount of hydrogen in the hydrogen-containing silicone resin.

[0053] As a preferred embodiment, the reaction temperature in S3 is 85°C.

[0054] As a preferred embodiment, after the reaction in S3 is completed, the solution temperature is reduced to 30°C, and then filtered through an activated carbon column to remove the catalyst in the reaction solution. The unreacted small amount of alkenyl glycidyl ether, fluorinated acrylate and low-polarity solvent are then removed by vacuum distillation to obtain a fluorinated epoxy silicone resin.

[0055] The fluorinated epoxy silicone resin prepared by the above-mentioned preparation method is used as a reactive additive to prepare an organic polymer-based wear-resistant and antifouling coating.

[0056] The present invention simultaneously grafts epoxy and fluorine-containing groups onto the surface of an organic silicone resin through a hydrosilylation reaction. Due to the property that the epoxy group can react with corresponding groups such as carboxyl, amino, hydroxyl, and acid anhydride in the organic polymer substrate, the compatibility with the organic polymer substrate is improved. At the same time, the low surface energy and low friction coefficient of the organic silicone resin and the fluorine-containing group are utilized to improve the wear resistance and anti-fouling properties of the coating. The prepared coating has good light transmittance and can be used in industries with high requirements on appearance, such as optics.

[0057] Example 1

[0058] Preparation of fluorinated epoxy silicone resin

[0059] S1. Dissolve 114.14 g of allyl glycidyl ether (1.0 mol), 43.22 g of ethyl perfluorohexyl methacrylate (0.1 mol), and 2.5 mg of chloroplatinic acid in 300.0 g of toluene and add the solution to a reactor to obtain solution A.

[0060] S2. Dissolve 149.28 g (1.05 mol) of hydrogenated silicone resin (hydrogen content is 0.7 mol / 100 g) in 150 g of toluene to obtain solution B, and place solution B into a dropping funnel;

[0061] S3. Nitrogen is introduced into the reactor to evacuate the air, and the reaction temperature is raised to 85°C under nitrogen protection. Solution B in the dropping funnel is added to solution A in the reactor within 3 hours. After the addition is complete, the reaction is continued for 1 hour. After the reaction is completed, the temperature of the solution in the reactor is reduced to 30°C, and then filtered through an activated carbon column to remove chloroplatinic acid in the reaction solution. The unreacted small amount of alkenyl glycidyl ether, ethyl perfluorohexyl methacrylate and toluene are removed by vacuum distillation to obtain a fluorinated epoxy silicone resin.

[0062] Example 2

[0063] Preparation of fluorinated epoxy silicone resin

[0064] S1. Dissolve 11.985 g of allyl glycidyl ether (0.105 mol), 4.538 g of ethyl perfluorohexyl methacrylate (0.0105 mol), and 0.33 mg of chloroplatinic acid in 300.0 g of heptane, and add the solution to a reactor to obtain solution A.

[0065] S2. Dissolve 149.28 g (1.05 mol) of hydrogenated silicone resin (hydrogen content is 0.7 mol / 100 g) in 150 g of heptane to obtain solution B, and place solution B into a dropping funnel;

[0066] S3. Nitrogen was introduced into the reactor to evacuate the air, and the reaction temperature was raised to 85°C under nitrogen protection. Solution B in the dropping funnel was added to solution A in the reactor within 3 hours. After the addition was complete, the reaction was continued for 1 hour. After the reaction was completed, the temperature of the solution in the reactor was reduced to 30°C, and then filtered through an activated carbon column to remove chloroplatinic acid in the reaction solution. The unreacted small amount of alkenyl glycidyl ether, ethyl perfluorohexyl methacrylate and heptane were removed by distillation under reduced pressure to obtain a fluorinated epoxy silicone resin.

[0067] Example 3

[0068] Preparation of fluorinated epoxy silicone resin

[0069] S1. Dissolve 118.65 g of allyl glycidyl ether (1.0395 mol), 45.38 g of ethyl perfluorohexyl methacrylate (0.105 mol), and 4.7 mg of chloroplatinic acid in 300.0 g of heptyl acetate, and add the solution to a reactor to obtain solution A.

[0070] S2. Dissolve 149.28 g (1.05 mol) of hydrogenated silicone resin (hydrogen content is 0.7 mol / 100 g) in 150 g of heptyl acetate to obtain solution B, which is then placed in a dropping funnel.

[0071] S3. Nitrogen is introduced into the reactor to evacuate the air, and the reaction temperature is raised to 85°C under nitrogen protection. Solution B in the dropping funnel is added to solution A in the reactor within 3 hours. After the addition is complete, the reaction is continued for 1 hour. After the reaction is completed, the temperature of the solution in the reactor is reduced to 30°C, and then filtered through an activated carbon column to remove chloroplatinic acid in the reaction solution. Then, unreacted small amounts of alkenyl glycidyl ether, ethyl perfluorohexyl methacrylate and heptyl acetate are removed by distillation under reduced pressure to obtain a fluorinated epoxy silicone resin.

[0072] Example 4

[0073] Preparation of carboxyl-containing acrylate copolymers

[0074] 6.0 g of azoisobutyl cyanide, 100 g of methacrylic acid, 600 g of methyl methacrylate, 300 g of heptyl methacrylate, and 1.5 kg of toluene were added to a reactor. After the addition, nitrogen was introduced to expel the air in the reactor. Then, under nitrogen protection, the temperature was 60° C., and the reaction was carried out for 2 hours. Then, 4.0 g of azoisobutyl cyanide was added, and under nitrogen protection, the temperature was 70° C., and the reaction was carried out for 1.5 hours to obtain a carboxyl-containing acrylate copolymer.

[0075] Example 5

[0076] Preparation of acrylic copolymer / fluorinated silicone coating

[0077] 1) dissolving the carboxyl group-containing acrylate copolymer prepared in Example 4 in toluene to obtain an acrylate copolymer solution having a mass concentration of 30%;

[0078] 2) dissolving the fluorinated epoxy silicone resin prepared in Example 1 in toluene to obtain a fluorinated epoxy silicone resin solution with a mass concentration of 30%;

[0079] 3) Under stirring, the fluorinated epoxy silicone resin solution prepared in S2 is added to the acrylate copolymer solution prepared in S1, wherein the mass of the epoxy fluorinated silicone resin is 0.5% of the mass of the carboxyl-containing acrylate copolymer, and toluene is added to prepare a mixed solution with a mass concentration of 5% to 30%. The mixed solution is coated on the surface of the substrate, dried at 80°C for 0.5 hour, and cross-linked at 120°C for 2 hours to obtain an acrylic copolymer / fluorinated silicone coating.

[0080] Example 6

[0081] Preparation of acrylic copolymer / fluorinated silicone coating

[0082] 1) dissolving the carboxyl group-containing acrylate copolymer prepared in Example 4 in toluene to obtain an acrylate copolymer solution having a mass concentration of 30%;

[0083] 2) dissolving the fluorinated epoxy silicone resin prepared in Example 1 in toluene to obtain a fluorinated epoxy silicone resin solution with a mass concentration of 30%;

[0084] 3) Under stirring, the fluorinated epoxy silicone resin solution prepared in S2 is added to the acrylate copolymer solution prepared in S1, wherein the mass of the epoxy fluorinated silicone resin is 1.0% of the mass of the carboxyl-containing acrylate copolymer, and toluene is added to prepare a mixed solution with a mass concentration of 5% to 30%. The mixed solution is coated on the surface of the substrate, dried at 80°C for 0.5 hour, and cross-linked at 120°C for 2 hours to obtain an acrylic copolymer / fluorinated silicone coating.

[0085] Example 7

[0086] Preparation of acrylic copolymer / fluorinated silicone coating

[0087] 1) dissolving the carboxyl group-containing acrylate copolymer prepared in Example 4 in toluene to obtain an acrylate copolymer solution having a mass concentration of 30%;

[0088] 2) dissolving the fluorinated epoxy silicone resin prepared in Example 1 in toluene to obtain a fluorinated epoxy silicone resin solution with a mass concentration of 30%;

[0089] 3) Under stirring, the fluorinated epoxy silicone resin solution prepared in S2 is added to the acrylate copolymer solution prepared in S1, wherein the mass of the epoxy fluorinated silicone resin is 2.0% of the mass of the carboxyl-containing acrylate copolymer, and toluene is added to prepare a mixed solution with a mass concentration of 5% to 30%. The mixed solution is coated on the surface of the substrate, dried at 80°C for 0.5 hour, and cross-linked at 120°C for 2 hours to obtain an acrylic copolymer / fluorinated silicone coating.

[0090] Example 8

[0091] Preparation of acrylic copolymer / fluorinated silicone coating

[0092] 1) dissolving the carboxyl group-containing acrylate copolymer prepared in Example 4 in toluene to obtain an acrylate copolymer solution having a mass concentration of 30%;

[0093] 2) dissolving the fluorinated epoxy silicone resin prepared in Example 1 in toluene to obtain a fluorinated epoxy silicone resin solution with a mass concentration of 30%;

[0094] 3) Under stirring, the fluorinated epoxy silicone resin solution prepared in S2 is added to the acrylate copolymer solution prepared in S1, wherein the mass of the epoxy fluorinated silicone resin is 5.0% of the mass of the carboxyl-containing acrylate copolymer, and toluene is added to prepare a mixed solution with a mass concentration of 5% to 30%. The mixed solution is coated on the surface of the substrate, dried at 80°C for 0.5 hour, and cross-linked at 120°C for 2 hours to obtain an acrylic copolymer / fluorinated silicone coating.

[0095] Comparative Example

[0096] Preparation of acrylic copolymer coating

[0097] The carboxyl-containing acrylate copolymer prepared in Example 1 was dissolved in toluene to obtain an acrylate copolymer solution with a mass concentration of 5% to 30%. The acrylate copolymer solution was applied to the surface of the substrate, dried at 80°C for 0.5 hour, and cross-linked at 120°C for 2 hours to obtain an acrylic copolymer coating.

[0098] Test Example 1

[0099] Fourier transform infrared spectroscopy

[0100] The fluorinated epoxy silicone resin HMQ-AGE-G06B was tested using a Fourier transform infrared spectrometer. The experimental results are as follows Figure 2 shown.

[0101] Depend on Figure 2 It can be seen that 900cm -1 The peak at 2960 cm is attributed to the epoxy group. -1 The peaks at 1062 and 833 cm are due to the stretching vibrations of the -CH2- group in glycidyloxypropyl and ethyl perfluorohexyl methacrylate. -1 The peaks at 1251 cm-1 correspond to Si-O-Si and Si-C stretching vibrations, respectively. -1 The peak at is from the CF bond in ethyl perfluorohexyl methacrylate

[113] , 2138cm -1 The peaks at are attributed to the unreacted Si-H bonds in the hydrogenated silicone resin (HMQ), which indicates that the epoxy groups (AGE) and fluorine-containing groups (G06B) have been successfully grafted onto the hydrogenated silicone resin (HMQ).

[0102] Test Example 2

[0103] NMR fluorine spectrum test

[0104] The fluorinated epoxy silicone resin HMQ-AGE-G06B was tested by nuclear magnetic resonance fluorine spectrum using a nuclear magnetic resonance instrument. The results are as follows Figure 3 shown.

[0105] Depend on Figure 3 It can be seen that the signal at -64ppm corresponds to -CH2-C F2 -F in the environment a The signals centered at -108ppm and -123ppm correspond to F c and F d The fluorine atom (-C F2 -C F2 -CF3). The signal at -80ppm corresponds to F b The fluorine atom (-CF2-C F3 The above characterizations indicate that the fluorinated epoxy silicone resin has been successfully synthesized.

[0106] Test Example 3

[0107] Scanning electron microscopy experiments of acrylic copolymer / fluorinated silicone coatings

[0108] The acrylic copolymer / fluorinated organosilicon coating prepared in Example 5 was tested using an electron scanning microscope. The experimental results are as follows: Figure 4 shown.

[0109] Test Example 4

[0110] Polyacrylic acid / silicone coating performance test

[0111] 1) Testing the wear resistance of the acrylic copolymer / fluorinated silicone coatings of Examples 5 to 8 and the acrylic copolymer coating prepared from the comparative example using ASTM D4060-10, and testing the number of cycles required to wear the acrylic copolymer / fluorinated silicone coatings of Examples 5 to 8 and the acrylic copolymer coating prepared from the comparative example; wherein, elastic CS-10 abrasive particles with a load of 1000 g were used during the testing;

[0112] 2) The acrylic copolymer / fluorinated organosilicon coatings of Examples 5 to 8 and the acrylic copolymer coating prepared in the comparative example were tested for water contact angle using a water drop contact angle meter. The test data were recorded and organized. The results are shown in Table 1.

[0113] Table 1 Relationship between the amount of fluorinated epoxy silicone resin and the hardness, adhesion, wear resistance and water contact angle of the coating

[0114]

[0115] As shown in Table 1, the hardness, adhesion, and wear resistance of the coating prepared with the addition of fluorinated epoxy silicone resin are all improved compared to the coating prepared without the addition of fluorinated epoxy silicone resin. The hardness and wear resistance of the coating prepared with the addition of fluorinated epoxy silicone resin improve as the amount of fluorinated epoxy silicone resin added increases. The water contact angle increases with the amount of fluorinated epoxy silicone resin added. This demonstrates that during the coating preparation process, the epoxy groups in the fluorinated epoxy silicone resin react with the carboxyl groups in the carboxyl-containing acrylic copolymer resin, improving the compatibility between the fluorinated epoxy silicone resin and the carboxyl-containing acrylic copolymer resin. Simultaneously, the low surface energy and low friction coefficient of the hydrogenated silicone resin and the fluorinated groups are utilized to improve the hardness and wear resistance of the coating. The resulting coating exhibits excellent antifouling properties.

[0116] The technical features of the above-mentioned embodiments can be combined arbitrarily. In order to make the description concise, not all possible combinations of the technical features in the above-mentioned embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0117] The above-described embodiments merely illustrate several implementations of the present invention, and while their descriptions are relatively specific and detailed, they should not be construed as limiting the scope of the patent. It should be noted that a person skilled in the art would be able to make numerous variations and improvements without departing from the spirit of the present invention, all of which fall within the scope of protection of the present invention. Therefore, the scope of protection of the patent for this invention shall be determined by the appended claims.

Claims

1. A fluorinated epoxy silicone resin, characterized in that The invention comprises hydrogen-containing silicone resin, allyl glycidyl ether grafted onto the hydrogen-containing silicone resin via carbon-carbon double bonds, and fluorine-containing acrylate grafted onto the hydrogen-containing silicone resin via carbon-carbon double bonds.

2. The fluorinated epoxy silicone resin according to claim 1, characterized in that The molecular structural formula of the hydrogenated silicone resin is as follows: The hydrogen content of the hydrogen-containing silicone resin is 0.3% to 2.0%.

3. The fluorinated epoxy silicone resin according to claim 1, characterized in that The molecular structural formula of the allyl glycidyl ether is as follows:

4. The fluorinated epoxy silicone resin according to claim 1, characterized in that The molecular structural formula of the fluorinated acrylate is as follows: Here, n is an integer from 3 to 15.

5. A method for preparing a fluorinated epoxy silicone resin according to any one of claims 1 to 4, characterized in that: The following steps are involved: S1, dissolving allyl glycidyl ether, fluorinated acrylate and a catalyst in a low-polarity solvent to obtain a solution A; S2, dissolving the hydrogenated silicone resin in a low-polarity solvent to obtain a solution B; S3. Under nitrogen protection and heat preservation, the solution B obtained in S2 is added dropwise to the solution A obtained in S1 to react and obtain a fluorinated epoxy silicone resin.

6. The method for preparing a fluorinated epoxy silicone resin according to claim 5, wherein: The catalyst in S1 is chloroplatinic acid, and the catalyst accounts for 0.002‰ to 0.015‰ of the total mass of the reaction system.

7. The method for preparing a fluorinated epoxy silicone resin according to claim 5, wherein: The low polarity solvent in S1 and S2 is toluene, benzene, xylene, hexane, heptane, ethyl acetate, butyl acetate, heptyl acetate or a mixture thereof.

8. The method for preparing a fluorinated epoxy silicone resin according to claim 5, wherein: The molar amount of the allyl glycidyl ether is 10% to 99% of the molar amount of hydrogen in the hydrogen-containing silicone resin.

9. The method for preparing a fluorinated epoxy silicone resin according to claim 5, wherein: The molar amount of the fluorine-containing acrylate is 1% to 10% of the molar amount of hydrogen in the hydrogen-containing silicone resin.

10. A fluorinated epoxy silicone resin prepared by the preparation method according to any one of claims 6 to 9, used as a reactive additive in the preparation of an organic polymer-based wear-resistant and antifouling coating.

Citation Information

Patent Citations

  • Epoxy polymer with hydrophobic and oleophobic characteristics and preparation method thereof

    CN111100524A