Waterproof and wear-resistant outdoor jacket fabric and preparation method thereof

Abstract

The invention relates to the field of textile fabrics, in particular to a waterproof and wear-resistant outdoor jacket fabric and a preparation method thereof. The waterproof and wear-resistant outdoor jacket fabric at least comprises a base cloth layer and a waterproof coating covering the surface of the base cloth layer, and the waterproof coating at least comprises the following raw materials in parts by mass: 80-100 parts of polyurethane resin, 15-25 parts of acrylate resin, 3-10 parts of solid particles and 35-50 parts of deionized water. The finally prepared outdoor jacket fabric has good waterproof and breathable functions, the problem of performance contradiction in the prior art is solved, the overall comprehensive performance of the outdoor jacket fabric can be greatly improved, the environmental risk is reduced, and the use quality of the fabric is effectively improved to meet existing complex requirements.

Description

Technical Field

[0001] This application relates to the field of fabrics, and more specifically to a waterproof and abrasion-resistant functional windbreaker fabric and its preparation method. Background Technology

[0002] With the increasing popularity of outdoor sports, the demand for high-performance protective clothing is also growing. Especially when engaging in activities in extreme weather conditions, such as mountaineering, hiking, or skiing, wearers need clothing that is both effectively waterproof and breathable. This demand has driven the development of waterproof and breathable fabrics, particularly coated waterproof and breathable jacket fabrics.

[0003] The core of waterproof and breathable fabrics lies in their ability to block liquid water penetration while allowing water vapor (sweat) to pass through. This characteristic mainly relies on one or more special membranes in the fabric structure, whose micropores are designed to be small enough to prevent liquid water from passing through, but large enough to allow water vapor molecules to escape, thus achieving a balance between waterproofing and breathability.

[0004] In addition to the aforementioned films, modern outdoor jacket fabrics often utilize durable waterproof coatings, a surface treatment technology that reduces water adhesion to the fabric surface, causing water to bead up and quickly slide off instead of being absorbed into the fabric. This coating not only enhances the fabric's waterproof performance but also helps maintain its breathability. For example, patent CN115467172B proposes an ultra-lightweight waterproof coated fabric that uniformly coats a waterproof fabric with a coating paste to obtain an outdoor coated fabric with both waterproof and hydrophilic properties.

[0005] However, existing coated rain jacket fabrics still suffer from insufficient durability. They are prone to cracking after repeated washing or friction, leading to the closure or expansion of micropores, causing water seepage or reduced breathability. Furthermore, the fluorinated coatings currently used pose a risk of bioaccumulation, are difficult to degrade after disposal, and the evaporation of deionized water in the wet coating process causes environmental pollution. In addition, improving waterproofness often requires thickening the coating or reducing pore size, but this inhibits breathability, resulting in insufficient heat and moisture removal efficiency in dynamic activities and affecting its overall performance, highlighting a significant performance contradiction. Summary of the Invention

[0006] In summary, addressing this current situation has become a key research focus for those skilled in the art. After continuous experimentation and research, the applicant has finally proposed a waterproof and abrasion-resistant functional jacket fabric and its preparation method in this application. The jacket fabric ultimately obtained in this application not only possesses excellent waterproof and breathable properties, resolving previous performance contradictions, but also significantly improves its overall comprehensive performance, reduces environmental risks, and effectively enhances the quality of use of this type of fabric to meet current complex needs.

[0007] A waterproof and abrasion-resistant functional jacket fabric, comprising at least a base fabric layer and a waterproof coating covering the surface of the base fabric layer.

[0008] In a preferred embodiment, the thickness of the base fabric layer is 0.15–0.25 mm.

[0009] In a preferred embodiment, the thickness of the waterproof coating is 15–30 μm.

[0010] In a preferred embodiment, the base fabric layer comprises, by weight, at least: 90-120 parts polyester fiber, 30-45 parts organic cotton fiber, and 3-10 parts crosslinking agent.

[0011] In a preferred embodiment, the polyester fiber has a fineness of 40-55D.

[0012] In a preferred embodiment, the average fiber length of the polyester fiber is 100-140 mm.

[0013] In a preferred embodiment, the average length of the organic cotton fiber is 30-45 mm.

[0014] In a preferred embodiment, the micronaire value of the organic cotton fiber is 3.5 to 4.9.

[0015] In a preferred embodiment, the crosslinking agent is at least one of waterborne epoxy crosslinking agents.

[0016] In a preferred embodiment, the mass ratio of the polyester fiber, organic cotton fiber, and crosslinking agent is (9.5-11):(3.5-4.5):(0.6-1).

[0017] In a preferred embodiment, the mass ratio of the polyester fiber, organic cotton fiber and crosslinking agent is (10-11):(3.5-4):(0.8-1).

[0018] In a preferred embodiment, the waterproof coating comprises, by weight, at least: 80-100 parts polyurethane resin, 15-25 parts acrylate resin, 3-10 parts solid particles, and 35-50 parts deionized water.

[0019] In a preferred embodiment, the solid content of the polyurethane resin is 30-40%.

[0020] In a preferred embodiment, the mass ratio of the polyurethane resin, acrylate resin, and solid particles is (8.5–9.5):(1.5–2):(0.5–0.8).

[0021] In a preferred embodiment, the mass ratio of the polyurethane resin, acrylate resin, and solid particles is (8.5–9):(1.5–1.8):(0.6–0.7).

[0022] In a preferred embodiment, the acrylate resin is a modified acrylate resin.

[0023] In a preferred embodiment, the preparation method of the modified acrylate resin specifically includes the following steps: S1: Mixing the acrylate prepolymer with a solvent until homogeneous; S2: Adding vinyltrimethoxysilane, isobornyl acrylate, and 2-acrylamide-2-methylpropanesulfonic acid, heating and stirring, then heating again under nitrogen protection, and finally adding potassium persulfate, and maintaining the temperature for reaction; S3: After the reaction is complete, cooling down and adjusting the pH to 7-7.5, and filtering to obtain the final product.

[0024] In a preferred embodiment, the preparation method of the modified acrylate resin specifically includes the following steps: S1: Mixing the acrylate prepolymer with a solvent and stirring at 60-70°C until homogeneous; S2: Adding vinyltrimethoxysilane, isobornyl acrylate, and 2-acrylamide-2-methylpropanesulfonic acid, heating to 75-80°C, stirring at 200-250 rpm for 20-30 min, then heating again to 85-90°C under nitrogen protection, adding potassium persulfate, and maintaining the temperature for 5-6 h; S3: After the reaction is complete, cooling to 50-55°C, adding ammonia to adjust the pH to 7-7.5, and filtering to obtain the final product.

[0025] In a preferred embodiment, the mass ratio of the acrylate prepolymer, vinyltrimethoxysilane, isobornyl acrylate, and 2-acrylamide-2-methylpropanesulfonic acid is (9-12):(2-2.5):(1-1.4):(0.5-0.8).

[0026] In a preferred embodiment, the mass ratio of the acrylate prepolymer, vinyltrimethoxysilane, isoborneol acrylate, and 2-acrylamide-2-methylpropanesulfonic acid is (9.5-10):(2-2.2):(1-1.2):(0.5-0.6).

[0027] In a preferred embodiment, the solid particles are a composition of boron nitride, barium zirconate, and polyaniline fibers.

[0028] In a preferred embodiment, the mass ratio of the boron nitride sheet, barium zirconate, and polyaniline fiber is (2-3):(2-3):(1-1.5).

[0029] In a preferred embodiment, the thickness of the boron nitride sheet is 5–10 nm.

[0030] In a preferred embodiment, the average particle size of the barium zirconate is 50–80 nm.

[0031] In a preferred embodiment, the waterproof coating, by weight, further comprises: 0.3-0.6 parts antioxidant, 1.5-2.5 parts wetting agent, 0.3-0.5 parts defoamer, 1.5-3 parts thickener, and 0.6-1.2 parts leveling agent.

[0032] In a preferred embodiment, the antioxidant is at least one of antioxidant 1330, antioxidant 245, and antioxidant 445.

[0033] In a preferred embodiment, the antioxidant is antioxidant 1330.

[0034] In a preferred embodiment, the wetting agent is at least one of ammonium polyacrylate, sodium polycarboxylate, and polyether-modified polysiloxane.

[0035] In a preferred embodiment, the wetting agent is sodium polycarboxylate.

[0036] In a preferred embodiment, the defoamer is at least one of silicone defoamers.

[0037] In a preferred embodiment, the thickener is hydroxyethyl cellulose or fumed silica.

[0038] In a preferred embodiment, the thickener is hydroxyethyl cellulose.

[0039] In a preferred embodiment, the leveling agent is a polydimethylsiloxane or an acrylate copolymer.

[0040] In a preferred embodiment, the leveling agent is an acrylate copolymer.

[0041] The preparation method of the waterproof and abrasion-resistant functional jacket fabric described in this application specifically includes the following steps: S1: Polyester fiber and organic cotton fiber are blended in a certain proportion and woven into a base fabric with a basis weight of 120-150 g / m2. The base fabric is then immersed in an aqueous solution containing a crosslinking agent for 3-4 hours and dried at 100-120°C to obtain the base fabric layer; S2: Polyurethane resin, acrylic resin, solid particles and deionized water are added to a reaction vessel and stirred at 200-300 rpm for 30-40 minutes. The temperature is then raised to 40-50°C and ultrasonically treated at 40-60 kHz for 30-35 minutes. The remaining raw materials are added sequentially and stirred at 100-150 rpm until the viscosity stabilizes to obtain a coating liquid; S3: The coating liquid is uniformly coated onto the base fabric layer, dried with hot air circulation at 80-85°C, and then heat-cured at 130-140°C for 5-8 minutes to obtain a waterproof coating. The coating is then rolled by a double-roll calender to obtain the final product.

[0042] The beneficial effects of this application are:

[0043] 1. The final material of the jacket produced in this application not only has good waterproof and breathable functions, solving the previous performance contradictions, but also significantly improves its overall performance, reduces environmental risks, and effectively improves the quality of use of this type of material to meet current complex needs.

[0044] 2. By adding modified acrylic resin to the waterproof coating, the overall performance of the fabric is significantly improved. The siloxane groups it contains undergo hydrolysis and condensation during curing to form a cross-linked network, significantly increasing coating strength. Furthermore, the isoborneol groups, acting as side chains, reduce molecular chain slippage through steric hindrance, lowering the coefficient of friction and improving abrasion resistance while significantly reducing surface hydrophilicity. Additionally, their excellent rigid structure absorbs light energy, reduces short chains in the main chain, and improves the continuity of the coating system, providing a foundation for improved overall performance.

[0045] 3. Furthermore, the solid particle composition added to the coating can work together to improve the overall performance of the fabric, especially for the rapid curing of the coating. It also helps to improve the surface roughness of the coating during its formation, thereby achieving the barrier of the surface hydration layer. On the other hand, through the high wear and corrosion resistance of the particles and the construction of the conductive network, it delays the spread of static electricity and provides excellent waterproof, corrosion-resistant and aging-resistant properties. Attached Figure Description

[0046] Figure 1 and Figure 2 This is an SEM image of the waterproof and abrasion-resistant functional windbreaker fabric prepared in Example 1 of this application. Detailed Implementation

[0047] Example 1

[0048] A waterproof and abrasion-resistant functional jacket fabric includes a base fabric layer and a waterproof coating covering the surface of the base fabric layer.

[0049] The thickness of the base fabric layer is 0.2 mm; the thickness of the waterproof coating is 25 μm.

[0050] The base fabric layer, by weight, comprises: 105 parts polyester fiber, 37 parts organic cotton fiber, and 8 parts crosslinking agent.

[0051] The polyester fiber has a fineness of 50D and an average length of 140mm. It is from Jiangsu Shenghong Chemical Fiber Co., Ltd. in China. It is PET, 50D / 72F.

[0052] The organic cotton fiber has an average fiber length of 35mm and a micronaire value of 3.8, and comes from Xinjiang Tianmian Company in China.

[0053] The crosslinking agent is a water-based epoxy crosslinking agent, specifically crosslinking agent F-316 from Beijing Qifei Technology Co., Ltd.

[0054] The waterproof coating, by weight, comprises the following raw materials: 90 parts polyurethane resin, 16 parts acrylic resin, 6.5 parts solid particles, 42 parts deionized water, 0.4 parts antioxidant, 2.1 parts wetting agent, 0.3 parts defoamer, 2.1 parts thickener, and 0.8 parts leveling agent.

[0055] The polyurethane resin has a solid content of 38%, and the product is Covestro DLN-SD sold by Shanghai Tikham Industrial Co., Ltd.

[0056] The acrylate resin is a modified acrylate resin. The preparation method, by weight, includes the following steps: S1: Mix 9.8 parts of acrylate prepolymer with 40 parts of DMF and stir at 65°C until homogeneous; S2: Add 2.2 parts of vinyltrimethoxysilane, 1.1 parts of isobornyl acrylate, and 0.5 parts of 2-acrylamide-2-methylpropanesulfonic acid, heat to 80°C, stir at 200 rpm for 30 min, then heat again to 85°C under nitrogen protection, add 0.15 parts of potassium persulfate, and maintain the reaction temperature for 6 h; S3: After the reaction is complete, cool to 50°C, add ammonia to adjust the pH to 7, and filter to obtain the final product.

[0057] Acrylic ester prepolymer, AC-206 from ZINS AG, Germany.

[0058] The solid particles are a composition of boron nitride, barium zirconate and polyaniline fiber in a mass ratio of 2.5:2.5:1.

[0059] The boron nitride sheet is 6 nm thick, and the average particle size of barium zirconate is 55 nm.

[0060] The polyaniline fiber is from Qiyuan (Guangdong) Pharmaceutical & Chemical Co., Ltd., and has a diameter of 0.3μm.

[0061] The antioxidant is antioxidant 1330; the wetting agent is sodium polycarboxylate 5040 from Wuhan Huaxiang Kejie Biotechnology Co., Ltd.; the defoamer is silicone defoamer BYK-066N; the thickener is hydroxyethyl cellulose; and the leveling agent is an acrylate copolymer, EFKA-3777 from German company Zyxel.

[0062] The preparation method of the waterproof and abrasion-resistant functional jacket fabric described above in this embodiment specifically includes the following steps: S1: Polyester fiber and organic cotton fiber are blended in a certain proportion and woven into a base fabric with a weight of 140g / m². 2S1: The substrate is then immersed in an aqueous solution containing a crosslinking agent (the amount of deionized water is 20 times that of the crosslinking agent) for 4 hours, followed by drying at 110°C to obtain the base fabric layer; S2: Polyurethane resin, acrylic resin, solid particles and deionized water are added to a reaction vessel, stirred at 200 rpm for 40 minutes, heated to 50°C, and ultrasonically treated at 50 kHz for 30 minutes. The remaining raw materials are added sequentially, and stirred at 120 rpm until the viscosity stabilizes to obtain the coating liquid; S3: The coating liquid is evenly coated onto the base fabric layer, dried with hot air circulation at 80°C, and then heat-cured at 140°C for 6 minutes to obtain the waterproof coating. After being rolled by a double-roll calender, the final product is obtained.

[0063] Example 2

[0064] The only difference between this embodiment and Embodiment 1 is as follows: the waterproof coating, by weight, comprises the following raw materials: 85 parts polyurethane resin, 18 parts acrylic resin, 6 parts solid particles, 42 parts deionized water, 0.4 parts antioxidant, 2.1 parts wetting agent, 0.3 parts defoamer, 2.1 parts thickener, and 0.8 parts leveling agent.

[0065] All other implementation schemes are the same.

[0066] Example 3

[0067] The only difference between this embodiment and Embodiment 1 is as follows: the waterproof coating, by weight, comprises the following raw materials: 88 parts polyurethane resin, 15 parts acrylic resin, 7 parts solid particles, 42 parts deionized water, 0.4 parts antioxidant, 2.1 parts wetting agent, 0.3 parts defoamer, 2.1 parts thickener, and 0.8 parts leveling agent.

[0068] All other implementation schemes are the same.

[0069] Comparative Example 1

[0070] The only difference between this comparative example and Example 1 is as follows: the waterproof coating, by weight, comprises the following raw materials: 105 parts polyurethane resin, 5 parts acrylic resin, 6.5 parts solid particles, 42 parts deionized water, 0.4 parts antioxidant, 2.1 parts wetting agent, 0.3 parts defoamer, 2.1 parts thickener, and 0.8 parts leveling agent.

[0071] All other implementation schemes are the same.

[0072] Comparative Example 2

[0073] The only difference between this comparative example and Example 1 is as follows: the waterproof coating, by weight, comprises the following raw materials: 90 parts polyurethane resin, 20 parts acrylic resin, 1.5 parts solid particles, 42 parts deionized water, 0.4 parts antioxidant, 2.1 parts wetting agent, 0.3 parts defoamer, 2.1 parts thickener, and 0.8 parts leveling agent.

[0074] All other implementation schemes are the same.

[0075] Comparative Example 3

[0076] The only difference between this comparative example and Example 1 is as follows: the acrylate resin is a modified acrylate resin. The preparation method, by mass, specifically includes the following steps: S1: Mix 9.8 parts of acrylate prepolymer with 40 parts of DMF and stir at 65°C until homogeneous; S2: Add 1.5 parts of vinyltrimethoxysilane, 0.2 parts of isobornyl acrylate and 1.5 parts of 2-acrylamido-2-methylpropanesulfonic acid, heat to 80°C, stir at 200 rpm for 30 min, then heat again to 85°C under nitrogen protection, add 0.15 parts of potassium persulfate, and keep the reaction at this temperature for 6 h; S3: After the reaction is complete, cool to 50°C, add ammonia to adjust the pH to 7, and filter to obtain the final product.

[0077] All other implementation schemes are the same.

[0078] Comparative Example 4

[0079] The only difference between this comparative example and Example 1 is as follows: the acrylate resin is a modified acrylate resin. The preparation method, by mass, specifically includes the following steps: S1: Mix 15 parts of acrylate prepolymer with 40 parts of DMF and stir at 65°C until homogeneous; S2: Add 3 parts of vinyltrimethoxysilane, 0.5 parts of isobornyl acrylate and 0.1 parts of 2-acrylamido-2-methylpropanesulfonic acid, heat to 80°C, stir at 200 rpm for 30 min, then heat again to 85°C under nitrogen protection, add 0.15 parts of potassium persulfate, and keep the reaction at this temperature for 6 h; S3: After the reaction is complete, cool to 50°C, add ammonia to adjust the pH to 7, and filter to obtain the final product.

[0080] All other implementation schemes are the same.

[0081] Comparative Example 5

[0082] The only difference between this comparative example and Example 1 is that the solid particles are a composition of boron nitride, barium zirconate, and polyaniline fiber in a mass ratio of 5:1:1.

[0083] All other implementation schemes are the same.

[0084] Comparative Example 6

[0085] The only difference between this comparative example and Example 1 is that the solid particles are a composition of boron nitride, barium zirconate, and polyaniline fiber in a mass ratio of 1:1:3.

[0086] All other implementation schemes are the same.

[0087] Performance Evaluation

[0088] 1. Water resistance: The water drop test was conducted using the seat drop method. The fabric was cut into 2cm×2cm samples and 3μL of water was used for the seat drop test. The test time was 180s. The relative humidity of the test environment was 50% and the temperature was 25℃. The water contact angle at 180s was recorded. The results were the average of 10 tests and recorded in Table 1.

[0089] 2. Corrosion resistance: The fabric was cut into 2cm×2cm samples. The test environment temperature was 35±2℃, the humidity was 95±2%, the test solution was 5wt% NaCl solution, and the spraying rate was 2mL / 16h·80cm. 2 Record the corrosion resistance test time every 50 hours, and record the results in Table 1.

[0090] 3. Air permeability: The positive cup method was used to test the air permeability of a circular sample with a diameter of 70 mm (coated side facing up). The test was conducted at 25±1℃, with the inner side (inside the cup) at 50% RH and the outer side (environment) at 90% RH for 24 hours. The test was performed using a water vapor transmission rate tester, and the average of 10 tests was recorded in Table 1.

[0091] 4. Abrasion resistance: The test was conducted according to the Taber abrasion method of ASTM D4060. A 100×100mm square sample was prepared, and a CS-10 rubber wheel (pressure 500g) was used. The test was conducted 1,000 times (after 100 pre-abrasion cycles, the pressure was zeroed). The mass difference before and after abrasion was measured (accuracy 0.1mg). The average value of 10 tests was recorded in Table 1.

[0092] Table 1 Performance Test Results

[0093]

[0094] Based on the final performance test results of the examples and comparative examples, comparative examples 1 and 2 did not use appropriate amounts of modified acrylic resin and solid particles compared to the examples, resulting in a significant difference in the surface coating and overall performance of the fabric.

[0095] In contrast, Comparative Examples 3 and 4 did not use the correct methods and formulations to modify the acrylate prepolymer, resulting in limited performance improvement of the final acrylate resin for the fabric coating, and thus a significant performance decline compared to the examples.

[0096] Finally, in comparisons 5 and 6, the morphology and properties of the coating surface changed significantly due to the use of an inappropriate ratio of solid particles, which in turn led to a decline in the overall fabric performance.

Claims

1. A waterproof and abrasion-resistant functional outerwear fabric, characterized in that: It includes at least a base fabric layer and a waterproof coating covering the surface of the base fabric layer; The base fabric layer, by weight, comprises at least the following raw materials: 90-120 parts polyester fiber, 30-45 parts organic cotton fiber, and 3-10 parts crosslinking agent; The waterproof coating, by weight, comprises at least the following raw materials: 80-100 parts polyurethane resin, 15-25 parts acrylic resin, 3-10 parts solid particles, and 35-50 parts deionized water. The acrylate resin is a modified acrylate resin, and the preparation method specifically includes the following steps: S1: Mix the acrylate prepolymer with the solvent until uniform; S2: Add vinyltrimethoxysilane, isobornyl acrylate and 2-acrylamide-2-methylpropanesulfonic acid, heat and stir, then heat again under nitrogen protection and add potassium persulfate, and keep the reaction at the temperature; S3: After the reaction is completed, cool down and adjust the pH to 7-7.5, and filter to obtain the final product.

2. The waterproof and abrasion-resistant functional jacket fabric according to claim 1, characterized in that: The mass ratio of the polyurethane resin, acrylate resin and solid particles is (8.5-9.5):(1.5-2):(0.5-0.8).

3. The waterproof and abrasion-resistant functional jacket fabric according to claim 2, characterized in that: The average fiber length of the polyester fiber is 100-140 mm; the average fiber length of the organic cotton fiber is 30-45 mm; and the micronaire value of the organic cotton fiber is 3.5-4.

9.

4. The waterproof and abrasion-resistant functional jacket fabric according to claim 3, characterized in that: The crosslinking agent is at least one of water-based epoxy crosslinking agents.

5. The waterproof and abrasion-resistant functional jacket fabric according to claim 4, characterized in that: The preparation method of the modified acrylate resin specifically includes the following steps: S1: Mix the acrylate prepolymer with a solvent and stir at 60-70°C until homogeneous; S2: Add vinyltrimethoxysilane, isobornyl acrylate and 2-acrylamide-2-methylpropanesulfonic acid, heat to 75-80°C, stir at 200-250 rpm for 20-30 min, then heat again to 85-90°C under nitrogen protection, add potassium persulfate, and maintain the temperature for 5-6 h; S3: After the reaction is complete, cool to 50-55°C, add ammonia to adjust the pH to 7-7.5, and filter to obtain the final product.

6. The waterproof and abrasion-resistant functional jacket fabric according to claim 5, characterized in that: The mass ratio of the acrylate prepolymer, vinyltrimethoxysilane, isoborneol acrylate, and 2-acrylamide-2-methylpropanesulfonic acid is (9-12):(2-2.5):(1-1.4):(0.5-0.8).

7. The waterproof and abrasion-resistant functional jacket fabric according to claim 6, characterized in that: The solid particles are a composition of boron nitride, barium zirconate and polyaniline fiber in a mass ratio of (2-3):(2-3):(1-1.5).

8. The waterproof and abrasion-resistant functional jacket fabric according to claim 1, characterized in that: The waterproof coating, by weight, also includes the following raw materials: 0.3-0.6 parts antioxidant, 1.5-2.5 parts wetting agent, 0.3-0.5 parts defoamer, 1.5-3 parts thickener, and 0.6-1.2 parts leveling agent.

9. The waterproof and abrasion-resistant functional jacket fabric according to claim 8, characterized in that: The leveling agent is a polydimethylsiloxane or an acrylate copolymer.

10. A method for preparing a waterproof and abrasion-resistant functional jacket fabric according to any one of claims 8 to 9, characterized in that: Specifically, the following steps are included: S1: Polyester fiber and organic cotton fiber are blended in a certain proportion and woven into a base fabric with a weight of 120-150 g / m². 2 S1: After soaking in an aqueous solution containing a crosslinking agent for 3-4 hours, the substrate is dried at 100-120℃ to obtain the base fabric layer; S2: Polyurethane resin, acrylic resin, solid particles and deionized water are added to a reaction vessel and stirred at 200-300 rpm for 30-40 minutes, and heated to 40-50℃ and ultrasonically treated at 40-60 kHz for 30-35 minutes. The remaining raw materials are added sequentially and stirred at 100-150 rpm until the viscosity is stable to obtain the coating liquid; S3: The coating liquid is evenly coated on the base fabric layer, dried with hot air circulation at 80-85℃, and then heat-cured at 130-140℃ for 5-8 minutes to obtain the waterproof coating. After being rolled by a double roller calender, the coating is obtained.

Images