A weather-resistant synthetic leather surface treatment agent with silicone slip and wear resistance

Abstract

The application provides a weather-resistant synthetic leather surface treatment agent containing A component and B component, wherein the mass ratio of the A component to the B component is 3:1, the A component contains 10.0-40.0 parts of methyl vinyl polysiloxane, 7.0-22.0 parts of vinyl resin, 4.0-17.0 parts of crosslinking agent, 0.07-0.7 parts of inhibitor, 3.0-9.0 parts of silicone modified polymer, 1.0-5.0 parts of adhesion promoter, 8.0-22.0 parts of matting powder and 30.0-90.0 parts of solvent; and the B component contains 8.0-45.0 parts of vinyl silicone oil, 9.0-60.0 parts of vinyl resin, 0.05-0.6 parts of UV catalyst and 0.08-0.7 parts of Karsted platinum gold catalyst. The application also provides a preparation method of the weather-resistant synthetic leather surface treatment agent.

Description

Technical Field

[0001] This invention relates to the field of synthetic leather surface treatment technology, specifically to a weather-resistant silicone lubricating and wear-resistant surface treatment agent for synthetic leather and its preparation method. Background Technology

[0002] Natural leather, due to its unique and excellent natural properties, is widely used in daily necessities and industrial products in human life and production. With population growth, market demand has increased exponentially, and natural leather can no longer meet the demand. Therefore, a series of synthetic leather products have been developed to replace natural leather, used in shoes, leather goods, automotive interiors, sofas, furniture, sporting goods, and clothing. As a composite material, synthetic leather requires specific manufacturing technologies. With increasing use, more and more performance requirements are being placed on it, such as its feel, breathability, abrasion resistance, slip properties, gloss, elasticity, and bonding strength.

[0003] Organosilicon materials have Si-O-Si bonds in their main chain, with bond energies much greater than C-C bonds. The main chain is very flexible, with weak intermolecular forces, combining the properties of both inorganic and organic materials. They possess certain mechanical strength and chemical properties. They have low surface tension, high gas permeability, and can be used long-term between -40℃ and 200℃. They do not decompose or break chains at high temperatures, and have strong electrical insulation properties, meeting the requirements for insulating materials.

[0004] Traditional synthetic leather can improve its performance compared to natural leather through surface treatment agents. However, existing surface treatment agents have certain limitations and drawbacks, and cannot meet the requirements of specific conditions. With the emergence of more and more silicone-based surface treatment agents, some properties have been improved. However, existing synthetic leather still faces problems such as cracking and aging under some outdoor and extreme conditions, long-term ultraviolet radiation, and alternating temperature differences. Its stain resistance and hydrophobicity are also not good. Therefore, a soft, highly elastic, highly tough, wear-resistant, and weather-resistant surface treatment agent is needed to treat its surface and improve the overall performance of synthetic leather. Summary of the Invention

[0005] One of the objectives of this invention is to provide a weather-resistant silicone lubricating and wear-resistant surface treatment agent for synthetic leather, in order to solve the problems mentioned in the background art.

[0006] To achieve the above objectives, the present invention provides the following technical solution: A weather-resistant silicone-based lubricating and abrasion-resistant surface treatment agent for synthetic leather, comprising component A and component B, wherein the mass ratio of component A to component B is 3:1, by weight... Component A comprises: 10.0–40.0 parts methyl vinyl polysiloxane, 7.0–22.0 parts vinyl resin, 4.0–17.0 parts crosslinking agent, 0.07–0.7 parts inhibitor, 3.0–9.0 parts silicone-modified polymer, 1.0–5.0 parts adhesion promoter, 8.0–22.0 parts matting agent, and 30.0–90.0 parts solvent; The structural formula of the organosilicon-modified polymer is shown in Formula I, where 2≤m≤5, 2≤m≤5: Formula I; The structural formula of the adhesion promoter is shown in Formula II: Formula II; Component B comprises: 8.0–45.0 parts vinyl silicone oil, 9.0–60.0 parts vinyl resin, 0.05–0.6 parts UV catalyst, and 0.08–0.7 parts Castel platinum catalyst; In some embodiments, the methyl vinyl polysiloxane has a vinyl content of 0.003–1.1 wt% and a viscosity of 5,000–400,000 mPa·s; the vinyl silicone oil has a vinyl content of 0.004–0.5 wt% and a viscosity of 100–10,000 mPa·s; and the vinyl resin is a vinyl MQ resin with a vinyl content of 0.005–1.8 wt% and a viscosity of 1,000–50,000 mPa·s.

[0007] In some embodiments, the crosslinking agent is a hydrogen-containing MQ resin with a hydrogen content of 0.008 to 0.5 wt%. The crosslinking agent increases the chemical resistance, mechanical strength, and abrasion resistance of the material by promoting intermolecular crosslinking reactions, enabling it to maintain better performance and appearance under long-term use and wear conditions. In addition, the crosslinking agent also helps to maintain the softness and elasticity of synthetic leather, thereby making it closer to the feel of natural leather.

[0008] In some embodiments, the inhibitor is one or more of diethyl maleate, N,N-dimethylformamide, and tetramethyltetravinylcyclotetrasiloxane. The inhibitor can control the rate and extent of the chemical reaction to ensure that the silicone lubricating and abrasion-resistant surface treatment agent can be uniformly and effectively adhered to the surface of synthetic leather. The matting agent is one or more of Evonik TS100, Evonik ACEMATT810, and Grace SY7000. The matting agent can reduce the gloss of the synthetic leather surface, thereby providing a more natural appearance and texture.

[0009] In some embodiments, the solvent is one or more of toluene, xylene, DMF, and isoalkanes.

[0010] In some embodiments, the UV catalyst is trimethyl(methyl-cyclopentadiene)platinum(IV)[(Me-Cp)PtMe3]. Under ultraviolet light irradiation, the UV catalyst can promote the cross-linking reaction, accelerate the curing process, reduce energy consumption and cost in the production process, and also improve the physical and chemical stability of synthetic leather, enhancing its wear resistance and weather resistance.

[0011] In some embodiments, the Castel platinum catalyst has a platinum content of 1,000 to 50,000 ppm. The Castel platinum catalyst can efficiently catalyze the addition reaction of silicon-hydrogen bonds and unsaturated bonds (such as vinyl or propylene groups) in organosilicon compounds, effectively crosslinking organosilicon compounds, thereby improving the physical and chemical properties of synthetic leather, enhancing abrasion resistance, improving hand feel, increasing flexibility and weather resistance.

[0012] In some embodiments, the organosilicon-modified polymer is composed of Substance A and substance B Synthesized via condensation reaction; in some specific embodiments, the organosilicon-modified polymer is synthesized via the following steps: at 45°C, 78 parts of substance B and 0.2–0.3 parts of stannous octoate are added to a 500 mL three-necked flask; then, 73–159 parts of substance A are slowly added dropwise to the three-necked flask through a constant pressure funnel, ensuring that the addition is completed within 20 minutes; the reaction is carried out at 45°C for 2 hours, then the temperature is increased to 75°C and the reaction continues for 2 hours; after completion, the reaction is stopped and cooled, nitrogen is introduced, water is removed using molecular sieves, and the desired organosilicon-modified polymer is obtained after purification; The organosilicon-modified polymer is prepared by the heterofunctional condensation reaction of substances A and B. It is mainly incorporated into the main chain through the reaction of silanol groups and ethoxy groups. Its unique structure gives it excellent feel and wear resistance: the introduction of four cyclohexyl groups significantly improves its feel, while the addition of phenyl groups enhances its wear resistance. The effective combination of phenyl and cyclohexyl groups has a synergistic effect, improving the overall strength and practical performance of the product.

[0013] In some embodiments, the adhesion promoter is composed of Substance C and substance D It is obtained through an addition reaction. In some specific embodiments, it is synthesized through the following steps: First, 33 parts of substance C and 0.3 to 0.5 parts of isopropanol solution containing 7000 ppm 2 wt% chloroplatinic acid are added to a reaction flask, followed by 96.7 parts of substance D; the temperature is raised to 50°C and maintained for 2 to 3 hours, then the temperature is further raised to 70°C and the reaction continues for 2 to 3 hours; after the reaction is completed, stirring is stopped, nitrogen gas is introduced, and the mixture is cooled to room temperature. After dehydration using molecular sieves, the mixture is purified, and then the desired adhesion promoter is obtained by vacuum distillation. The adhesion promoter contains nine alkoxy groups, which significantly enhances the bonding and wetting ability at various substrate interfaces, thereby firmly fixing them to the substrate surface. It exhibits strong adhesion through cohesive destruction, while the phenyl groups enhance its weather resistance and ensure stability at high temperatures, resulting in excellent adhesion promoter performance. Furthermore, the reaction for preparing this adhesion promoter is a typical hydrosilylation reaction, involving the addition of silanes and vinyl silanes, with no byproducts, making it environmentally friendly.

[0014] Another object of the present invention is to provide a method for preparing a weather-resistant silicone lubricating and abrasion-resistant surface treatment agent for synthetic leather, comprising the following steps: Step 1, Preparation of Component A: Under 25℃ conditions, weigh out 10.0–40.0 parts of methyl vinyl polysiloxane, 7.0–22.0 parts of vinyl resin, 4.0–17.0 parts of crosslinking agent, 0.07–0.7 parts of inhibitor, 3.0–9.0 parts of organosilicon modified polymer, 1.0–5.0 parts of adhesion promoter, and 30.0–90.0 parts of solvent, and add them sequentially to a mixer. After mixing evenly, add 8.0–22.0 parts of matting powder and mix evenly to obtain Component A. Step 2, Preparation of Component B: Under 25℃ conditions, weigh out 8.0-45.0 parts of vinyl silicone oil, 9.0-60.0 parts of vinyl resin, 0.05-0.6 parts of UV catalyst, and 0.08-0.7 parts of Castel platinum catalyst, and add them to a mixer in sequence. Mix them evenly to obtain Component B. Step 3, Mixing and Curing: Component A and Component B are mixed evenly at a weight ratio of 3:1 and then coated onto the surface of the synthetic leather for curing. A coating printing process is used, with curing conditions of a wavelength of 365nm and a light intensity of 50mW / cm². 2 After irradiating with ultraviolet light for 5 minutes, it is then transferred to an oven at 100-180℃ for 5-12 minutes to dry, thus completing the process.

[0015] Compared with the prior art, the beneficial effects of the present invention are: (1) The present invention provides a weather-resistant silicone lubricating and wear-resistant surface treatment agent for synthetic leather. It has excellent performance. After being coated on the surface of synthetic leather, the synthetic leather has good weather resistance, lubrication, wear resistance and good hand feel.

[0016] (2) The present invention provides a method for preparing an organosilicon lubricating and wear-resistant surface treatment agent for weather-resistant synthetic leather. The reaction conditions are mild and the operation steps are simple. No by-products are generated, which is environmentally friendly. Implementation

[0017] The technical solutions in the embodiments of the present invention will be clearly and completely described below. Obviously, the described embodiments are only some, not all, of the embodiments of the present invention. Other embodiments obtained by those skilled in the art based on the embodiments of the present invention without creative effort should fall within the protection scope of the present invention. Example

[0018] Synthesis of organosilicon-modified polymers; Raw material A: Where m=2, n=2; Raw material B: .

[0019] At 45°C, 78 parts of substance B and 0.2 parts of stannous octoate were added to a 500 mL three-necked flask. Then, 73 parts of substance A were slowly added dropwise to the three-necked flask through a constant pressure funnel, ensuring that the addition was completed within 20 minutes. The reaction was carried out at 45°C for 2 hours, and then the temperature was raised to 75°C and the reaction was continued for 2 hours. After completion, the reaction was stopped and cooled, nitrogen gas was purged, water was removed using a molecular sieve, and the purified product was the organosilicon-modified polymer shown in Formula I, where m=2 and n=2. Formula I.

[0020] Synthesis of adhesion promoters: Raw material C: ; Raw material D: ; First, 33 parts of substance C and 0.3 parts of isopropanol solution containing 7000 ppm 2wt% chloroplatinic acid were added to a reaction flask, followed by 96.7 parts of substance D. The temperature was raised to 50°C and maintained for 3 hours. Then the temperature was further raised to 70°C and the reaction was continued for 3 hours. After the reaction was completed, stirring was stopped, nitrogen gas was introduced, and the mixture was cooled to room temperature. After removing water using a molecular sieve, the mixture was purified and then distilled under reduced pressure to obtain the adhesion promoter shown in Formula II. Formula II.

[0021] Synthesis of silicone-based lubricating and wear-resistant surface treatment agents: Step 1: Preparation of Component A: Under 25℃ conditions, weigh out 10.0 parts of methyl vinyl polysiloxane (vinyl content 0.003wt%, viscosity 400000mPa.s), 22.0 parts of vinyl MQ resin (vinyl content 1.8wt%, viscosity 1000mPa.s), 17.0 parts of hydrogen-containing MQ resin (hydrogen content 0.06wt%), 0.07 parts of N,N-dimethylformamide inhibitor, 3.0 parts of organosilicon modified polymer (such as structural formula I, where m=2, n=2), 5.0 parts of adhesion promoter (such as structural formula II), and 90.0 parts of xylene, and add them to a mixer in sequence. After mixing evenly, add 22.0 parts of Evonik TS100 matting powder and mix evenly to obtain Component A. Step 2: Preparation of Component B: Under 25℃ conditions, weigh out 8.0 parts of vinyl silicone oil (vinyl content 0.004wt%, viscosity 10000mPa.s), 60.0 parts of vinyl MQ resin (vinyl content 0.005wt%, viscosity 50000mPa.s), 0.3 parts of trimethyl(methyl-cyclopentadiene)platinum(IV)[(Me-Cp)PtMe3] UV catalyst, and 0.7 parts of Castells platinum catalyst with a platinum content of 1000ppm, and add them sequentially to a mixer and mix evenly to obtain Component B; Step 3: Mixing and Curing: Mix component A and component B evenly at a weight ratio of 3:1, then apply the mixture to the surface of the synthetic leather and cure it using a coating printing process. The curing conditions are a wavelength of 365nm and a light intensity of 50mW / cm². 2 After irradiating with ultraviolet light for 5 minutes, it is then transferred to an oven at 150°C for 8 minutes to dry, thus completing the process. Example

[0022] The synthesis of the organosilicon-modified polymer was the same as in Example 1, with m=5 and n=5 for raw material A: At 45°C, 78 parts of substance B and 0.3 parts of stannous octoate were added to a 500 mL three-necked flask. Then, 159 parts of substance A were slowly added dropwise to the three-necked flask through a constant pressure funnel, ensuring that the addition was completed within 20 minutes. The reaction was carried out at 45°C for 2 hours, and then the temperature was raised to 75°C and the reaction was continued for 2 hours. After completion, the reaction was stopped and cooled, nitrogen gas was purged, water was removed using a molecular sieve, and the desired organosilicon modified polymer was obtained after purification.

[0023] Synthesis of adhesion promoters: First, 33 parts of substance C and 0.5 parts of isopropanol solution containing 7000 ppm 2wt% chloroplatinic acid were added to a reaction flask, followed by 96.7 parts of substance D. The temperature was raised to 50°C and maintained for 2 hours. Then the temperature was further raised to 70°C and the reaction was continued for 2 hours. After the reaction was completed, stirring was stopped, nitrogen gas was introduced, and the mixture was cooled to room temperature. After removing water using a molecular sieve, the mixture was purified and then distilled under reduced pressure to obtain the desired adhesion promoter.

[0024] Synthesis of silicone-based lubricating and wear-resistant surface treatment agents: Step 1: Preparation of Component A: At 25℃, weigh out 40.0 parts of methyl vinyl polysiloxane (vinyl content 1.1wt%, viscosity 5000mPa.s), 7.0 parts of vinyl MQ resin (vinyl content 0.005wt%, viscosity 50000mPa.s), 4.0 parts of hydrogen-containing MQ resin (hydrogen content 0.5wt%), 0.7 parts of diethyl maleate, 9.0 parts of organosilicon modified polymer (such as structural formula I, where m=5, n=5), 1.0 part of adhesion promoter (such as structural formula II), and 30.0 parts of toluene, and add them to a mixer in sequence. After mixing evenly, add 8.0 parts of Evonik ACEMATT 810 matting powder and mix evenly to obtain Component A. Step 2: Preparation of Component B: Under 25℃ conditions, weigh out 45.0 parts of vinyl silicone oil (vinyl content of 0.5wt%, viscosity of 100mPa.s), 9.0 parts of vinyl MQ resin (vinyl content of 1.8wt%, viscosity of 1000mPa.s), 0.6 parts of trimethyl(methyl-cyclopentadiene)platinum(IV)[(Me-Cp)PtMe3] UV catalyst, and 0.08 parts of Castells platinum catalyst with a platinum content of 50000ppm, and add them sequentially to a mixer and mix evenly to obtain Component B; Step 3: Mixing and Curing: Mix component A and component B evenly at a weight ratio of 3:1, then apply the mixture to the surface of the synthetic leather and cure it using a coating printing process. The curing conditions are a wavelength of 365nm and a light intensity of 50mW / cm². 2 After irradiating with ultraviolet light for 5 minutes, it is then transferred to an oven at 100°C for 12 minutes to dry, thus completing the process. Example

[0025] The synthesis of the organosilicon-modified polymer was the same as in Example 1, with m=3 and n=3 for raw material A: At 45°C, 78 parts of substance B and 0.25 parts of stannous octoate were added to a 500 mL three-necked flask. Then, 102 parts of substance A were slowly added dropwise to the three-necked flask through a constant pressure funnel, ensuring that the addition was completed within 20 minutes. The reaction was carried out at 45°C for 2 hours, and then the temperature was raised to 75°C and the reaction was continued for 2 hours. After completion, the reaction was stopped and cooled, nitrogen gas was purged, water was removed using a molecular sieve, and the desired organosilicon modified polymer was obtained after purification.

[0026] Synthesis of adhesion promoters: First, 33 parts of substance C and 0.4 parts of isopropanol solution containing 7000 ppm 2wt% chloroplatinic acid were added to a reaction flask, followed by 96.7 parts of substance D. The temperature was raised to 50°C and maintained for 2.5 hours. Then the temperature was further raised to 70°C and the reaction was continued for another 2.5 hours. After the reaction was completed, stirring was stopped, nitrogen gas was introduced, and the mixture was cooled to room temperature. After removing water using a molecular sieve, the mixture was purified and then distilled under reduced pressure to obtain the desired adhesion promoter.

[0027] Synthesis of silicone-based lubricating and wear-resistant surface treatment agents: Step 1: Preparation of Component A: Under 25℃ conditions, weigh out 30 parts of methyl vinyl polysiloxane (vinyl content 0.8wt%, viscosity 20000mPa.s), 17.0 parts of vinyl MQ resin (vinyl content 0.95wt%, viscosity 37000mPa.s), 10.0 parts of hydrogen-containing MQ resin (hydrogen content 0.44wt%), 0.5 parts of tetramethyltetravinylcyclotetrasiloxane inhibitor, 6.0 parts of organosilicon modified polymer (such as structural formula I, where m=3, n=3)), 3.0 parts of adhesion promoter (such as structural formula II), and 60.0 parts of isoparaffin. Add them to a mixer in sequence and mix evenly. Then add 10.0 parts of Grace SY7000 matting powder and mix evenly to obtain Component A. Step 2: Preparation of Component B: Under 25℃ conditions, weigh out 22.0 parts of vinyl silicone oil (vinyl content 0.3wt%, viscosity 300mPa.s), 50.0 parts of vinyl MQ resin (vinyl content 0.9wt%, viscosity 30000mPa.s), 0.2 parts of trimethyl(methyl-cyclopentadiene)platinum(IV)[(Me-Cp)PtMe3] UV catalyst, and 0.1 parts of Castells platinum catalyst with a platinum content of 10000ppm, and add them sequentially to a mixer and mix evenly to obtain Component B; Step 3: Mixing and Curing: Mix component A and component B evenly at a weight ratio of 3:1, then apply the mixture to the surface of the synthetic leather and cure it using a coating printing process. The curing conditions are a wavelength of 365nm and a light intensity of 50mW / cm². 2After irradiating with ultraviolet light for 5 minutes, it is then transferred to an oven at 180°C for 5 minutes to dry, thus completing the process.

[0028] Comparative Example 1: The difference from Example 1 is that no organosilicon-modified polymer was added.

[0029] Comparative Example 2: The difference from Example 2 is that no adhesion promoter was added.

[0030] Comparative Example 3: The difference from Example 1 is that no adhesion promoter and silicone-modified polymer were added.

[0031] The relevant test results for this invention are shown in Table 1: project Example 1 Example 2 Example 3 Comparative Example 1 Comparative Example 2 Comparative Example 3 Adhesion (AL) 4.9MPa 3.8MPa 4.6MPa 2.9MPa 0.7MPa 0.4MPa Adhesion (PU) 4.3MPa 3.9MPa 4.1MPa 2.3MPa 0.5MPa 0.3MPa feel Smooth Smooth Smooth dry Smooth dry Knead 100 times normal normal normal slight glue peeling glue peeling 3000 rubs normal normal normal glue peeling glue peeling glue peeling Performance after aging (85℃, 85% humidity) after 3000 cycles of friction normal normal normal glue peeling glue peeling glue peeling 1000 hours of ultraviolet light irradiation normal normal normal glue peeling glue peeling glue peeling As shown in Example 1 and Comparative Example 1, adding silicone-modified polymer can improve the feel and wear and weather resistance. As shown in Example 2 and Comparative Example 2, adding adhesion promoter can improve the adhesion to the substrate. As shown in Example 3 and Comparative Example 3, using silicone-modified polymer and adhesion promoter simultaneously greatly improves its wear-resistant feel, adhesion, and wear and weather resistance.

[0032] The embodiments described above are merely preferred embodiments of the present invention and are not intended to limit the scope of the present invention. Without departing from the spirit of the present invention, various modifications and improvements made by those skilled in the art to the technical solutions of the present invention should fall within the protection scope defined by the claims of the present invention.

Claims

1. A weather-resistant silicone-based lubricating and wear-resistant surface treatment agent for synthetic leather, characterized in that, The surface treatment agent comprises component A and component B, wherein the mass ratio of component A to component B is 3:1, by weight. Component A comprises: 10.0–40.0 parts methyl vinyl polysiloxane, 7.0–22.0 parts vinyl resin, 4.0–17.0 parts crosslinking agent, 0.07–0.7 parts inhibitor, 3.0–9.0 parts silicone-modified polymer, 1.0–5.0 parts adhesion promoter, 8.0–22.0 parts matting agent, and 30.0–90.0 parts solvent; The structural formula of the organosilicon-modified polymer is shown in Formula I, where 2≤m≤5, 2≤m≤5: Equation I; The structural formula of the adhesion promoter is shown in Formula II: Formula II; The B component comprises: 8.0 to 45.0 parts of vinyl silicone oil, 9.0 to 60.0 parts of vinyl resin, 0.05 to 0.6 parts of UV catalyst, and 0.08 to 0.7 parts of Castel platinum catalyst.

2. The organosilicon lubricating and wear-resistant surface treatment agent for weather-resistant synthetic leather according to claim 1, characterized in that, The methyl vinyl polysiloxane has a vinyl content of 0.003–1.1 wt% and a viscosity of 5,000–400,000 mPa·s; the vinyl silicone oil has a vinyl content of 0.004–0.5 wt% and a viscosity of 100–10,000 mPa·s; the vinyl resin is a vinyl MQ resin with a vinyl content of 0.005–1.8 wt% and a viscosity of 1,000–50,000 mPa·s.

3. The organosilicon lubricating and wear-resistant surface treatment agent for weather-resistant synthetic leather according to claim 1, characterized in that, The crosslinking agent is a hydrogen-containing MQ resin with a hydrogen content of 0.008 to 0.5 wt%.

4. The organosilicon lubricating and wear-resistant surface treatment agent for weather-resistant synthetic leather according to claim 1, characterized in that, The inhibitor is one or more of diethyl maleate, N,N-dimethylformamide, and tetramethyltetravinylcyclotetrasiloxane; the matting agent is one or more of Evonik TS100, Evonik ACEMATT810, and Grace SY7000.

5. The organosilicon lubricating and wear-resistant surface treatment agent for weather-resistant synthetic leather according to claim 1, characterized in that, The solvent is one or more of toluene, xylene, DMF, and isoalkanes.

6. The organosilicon lubricating and wear-resistant surface treatment agent for weather-resistant synthetic leather according to claim 1, characterized in that, The UV catalyst is trimethyl(methyl-cyclopentadiene)platinum(IV)[(Me-Cp)PtMe3].

7. The organosilicon lubricating and wear-resistant surface treatment agent for weather-resistant synthetic leather according to claim 1, characterized in that, The platinum content of the Castel platinum catalyst is 1000–50000 ppm.

8. The organosilicon lubricating and wear-resistant surface treatment agent for weather-resistant synthetic leather according to claim 1, characterized in that, The organosilicon-modified polymer is composed of Substance A and substance B Synthesized via condensation reaction.

9. The organosilicon lubricating and wear-resistant surface treatment agent for weather-resistant synthetic leather according to claim 8, characterized in that, The organosilicon-modified polymer was synthesized through the following steps: 78 parts of substance B and 0.2–0.3 parts of stannous octoate were added to a 500 mL three-necked flask at 45 °C; then, 73–159 parts of substance A were slowly added dropwise to the three-necked flask through a constant pressure funnel, ensuring that the addition was completed within 20 minutes; the reaction was carried out at 45 °C for 2 hours, and then the temperature was increased to 75 °C and the reaction was continued for 2 hours; after completion, the reaction was stopped and cooled, nitrogen gas was introduced, water was removed using a molecular sieve, and the desired organosilicon-modified polymer was obtained after purification.

10. The organosilicon lubricating and wear-resistant surface treatment agent for weather-resistant synthetic leather according to claim 1, characterized in that, The adhesion promoter is composed of Substance C and substance D Obtained through an addition reaction.

11. The organosilicon lubricating and wear-resistant surface treatment agent for weather-resistant synthetic leather according to claim 10, characterized in that, The adhesion promoter is synthesized through the following steps: First, 33 parts of substance C and 0.3 to 0.5 parts of isopropanol solution containing 7000 ppm 2 wt% chloroplatinic acid are added to a reaction flask, followed by 96.7 parts of substance D; the temperature is raised to 50°C and maintained for 2 to 3 hours, then the temperature is further raised to 70°C and the reaction continues for 2 to 3 hours; after the reaction is completed, stirring is stopped, nitrogen gas is introduced, and the mixture is cooled to room temperature. After removing water using a molecular sieve, the mixture is purified, and then the desired adhesion promoter is obtained by vacuum distillation.

12. The preparation method of the organosilicon lubricating and wear-resistant surface treatment agent for weather-resistant synthetic leather according to claim 1, characterized in that, Includes the following steps: Step 1, Preparation of Component A: Weigh out 10.0–40.0 parts of methyl vinyl polysiloxane, 7.0–22.0 parts of vinyl resin, 4.0–17.0 parts of crosslinking agent, 0.07–0.7 parts of inhibitor, 3.0–9.0 parts of organosilicon modified polymer, 1.0–5.0 parts of adhesion promoter, and 30.0–90.0 parts of solvent, and add them sequentially to a mixer. After mixing evenly, add 8.0–22.0 parts of matting powder and mix evenly to obtain Component A. Step 2, Preparation of Component B: Weigh 8.0-45.0 parts of vinyl silicone oil, 9.0-60.0 parts of vinyl resin, 0.05-0.6 parts of UV catalyst, and 0.08-0.7 parts of Castel platinum catalyst, and add them to a mixer in sequence. Mix them evenly to obtain Component B. Step 3, Mixing and Curing: Component A and Component B are mixed evenly at a weight ratio of 3:1 and then coated onto the surface of the synthetic leather for curing. A coating printing process is used, with curing conditions of a wavelength of 365nm and a light intensity of 50mW / cm². 2 After irradiating with ultraviolet light for 5 minutes, it is then transferred to an oven at 100-180℃ for 5-12 minutes to dry, thus completing the process.

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