CN-121976400-A - Wear-resistant scratch-resistant outdoor fabric and preparation method thereof

Abstract

The application relates to the technical field of outdoor fabrics, and particularly discloses a wear-resistant scratch-resistant outdoor fabric and a preparation method thereof. The wear-resistant scratch-resistant outdoor fabric comprises base cloth and a wear-resistant scratch-resistant coating adhered to the surface of the base cloth, wherein the wear-resistant scratch-resistant coating is mainly prepared from, by weight, 45-55 parts of waterborne polyurethane, 15-25 parts of waterborne epoxy resin, 4-6 parts of isocyanate curing agent, 9-11 parts of modified nano silicon dioxide, 2-4 parts of thickener, 0.5-1.5 parts of leveling agent, 1-3 parts of ultraviolet absorbent, 0.5-1.5 parts of antioxidant and 25-35 parts of water, and the modified nano silicon dioxide is prepared by treating nano silicon dioxide with 3-methacryloxypropyl trimethoxysilane, 2- (trifluoromethyl) acrylic acid and hydrogen phosphate di (methacryloxyethyl) ester. The wear-resistant scratch-resistant outdoor fabric has the advantages of high wear resistance, good wear-resistant durability and strong adhesive force, and meets market demands.

Inventors

• CHEN LIXIA
• YU MING
• CHEN ZHENZHEN

Assignees

• 东莞市背派客信息科技有限公司

Dates

Publication Date

20260505

Application Date

20260130

Claims (10)

1. 1. The wear-resistant scratch-resistant outdoor fabric is characterized by comprising, by weight, 45-55 parts of a base fabric and a wear-resistant scratch-resistant coating adhered to the surface of the base fabric, wherein the wear-resistant scratch-resistant coating is mainly prepared from, by weight, 45-55 parts of waterborne polyurethane, 15-25 parts of waterborne epoxy resin, 4-6 parts of an isocyanate curing agent, 9-11 parts of modified nano silicon dioxide, 2-4 parts of a thickening agent, 0.5-1.5 parts of a leveling agent, 1-3 parts of an ultraviolet absorber, 0.5-1.5 parts of an antioxidant and 25-35 parts of water, and the modified nano silicon dioxide is prepared by treating nano silicon dioxide with 3-methacryloxypropyl trimethoxysilane, 2- (trifluoromethyl) acrylic acid and hydrogen phosphate di (methacryloxyethyl) ester.
2. 2. The wear-resistant and scratch-resistant outdoor fabric as claimed in claim 1, wherein the modified nano-silica is prepared by the following method: t1, mixing water and nano silicon dioxide at the temperature of 60-80 ℃, adding 3-methacryloxypropyl trimethoxy silane, stirring for 2-4 hours, and filtering to obtain silane grafted nano silicon dioxide; T2, under the protection of inert gas and at the temperature of 60-80 ℃, mixing N, N-dimethylformamide and silane grafted nano silicon dioxide, adding 2- (trifluoromethyl) acrylic acid and hydrogen phosphate di (methacryloyloxyethyl) ester, mixing, adding an organic initiator, stirring for 3-5h, filtering, washing and drying to obtain the modified nano silicon dioxide.
3. 3. The wear-resistant and scratch-resistant outdoor fabric as claimed in claim 2, wherein the weight ratio of the nano silicon dioxide to the 3-methacryloxypropyl trimethoxysilane to the 2- (trifluoromethyl) acrylic acid to the di (methacryloxyethyl) hydrogen phosphate to the organic initiator is 100 (5-15): 5-7): 3-5): 0.5-1.5.
4. 4. The wear-resistant and scratch-resistant outdoor fabric as claimed in claim 2, wherein the average particle size of the nano silicon dioxide is 10-50nm, and the specific surface area is 100-300m 2 /g.
5. 5. The wear-resistant and scratch-resistant outdoor fabric disclosed by claim 1 is characterized in that the aqueous polyurethane is one or more selected from aqueous polyurethane PU-3109, aqueous polyurethane PU-3777, aqueous polyurethane UW-5002E and aqueous polyurethane SEAPUR G75, and the aqueous epoxy resin is one or more selected from aqueous epoxy resin WQ-EP503, aqueous epoxy resin E-51, aqueous epoxy resin NPEW-254W60 and aqueous epoxy resin EPIKOTE 3520-WY-55A.
6. 6. The wear-resistant and scratch-resistant outdoor fabric as claimed in claim 1, wherein the isocyanate curing agent is one or more selected from the group consisting of an isocyanate curing agent Bayhydur XP 2655, an isocyanate curing agent Bayhydur XP 2547, an isocyanate curing agent Bayhydur XP 2487/1 and an isocyanate curing agent Bayhydur XP 2759.
7. 7. The wear-resistant and scratch-resistant outdoor fabric according to claim 1, wherein the thickener is one or more selected from the group consisting of a thickener ACRYSOL RM-8W, a thickener TACRYSOL TT-935, a thickener Rheosis AS 1125 and a thickener TEGO Viscoplus 3060, and the leveling agent is one or more selected from the group consisting of a leveling agent BYK-333, a leveling agent BYK-346, a leveling agent BYK-348 and a leveling agent BYK-378.
8. 8. The wear-resistant and scratch-resistant outdoor fabric as claimed in claim 1, wherein the ultraviolet absorber is one or more selected from ultraviolet absorber UV-327, ultraviolet absorber UV-328, ultraviolet absorber UV-1130 and ultraviolet absorber UV-1300, and the antioxidant is one or more selected from antioxidant 1010, antioxidant 1076, antioxidant 168 and antioxidant 626.
9. 9. The outdoor wear-resistant and scratch-resistant fabric of claim 1, wherein the wear-resistant and scratch-resistant coating has a thickness of 0.05-0.3mm.
10. 10. A method for preparing the wear-resistant scratch-resistant outdoor fabric as claimed in any one of claims 1 to 9, which is characterized by comprising the following steps: S1, mixing waterborne polyurethane, waterborne epoxy resin, isocyanate curing agent, modified nano silicon dioxide, thickening agent, leveling agent, ultraviolet absorbent, antioxidant and water to obtain coating working solution; S2, coating a coating working solution on the surface of the base fabric, heating to 80-100 ℃, carrying out heat preservation treatment for 3-5min, heating to 130-150 ℃, carrying out heat preservation treatment for 5-8min, heating to 160-180 ℃, carrying out heat preservation treatment for 8-12min, cooling to room temperature, and forming a wear-resistant scratch-resistant coating by using the coating working solution to obtain the wear-resistant scratch-resistant outdoor fabric.

Description

Wear-resistant scratch-resistant outdoor fabric and preparation method thereof Technical Field The application relates to the technical field of outdoor fabrics, in particular to a wear-resistant scratch-resistant outdoor fabric and a preparation method thereof. Background Outdoor fabrics are widely applied to products such as clothing, tents, backpacks, sunshades and the like, and often face the test of friction, rainwater erosion and the like. In the outdoor fabric in the prior art, a polyurethane coating is adhered to the surface of a base fabric, the base fabric is selected from polyester fabric or nylon fabric, and the polyurethane coating takes polyurethane as a matrix, so that the outdoor fabric has good rainwater erosion resistance but insufficient wear resistance. Some researchers have added silica to the raw materials of the polyurethane coating in order to improve the abrasion resistance. Silica has poor compatibility with polyurethane matrix and is easy to agglomerate. In order to improve the dispersibility of silica, some researchers modified silica with a silane coupling agent. For example, 3- (2, 3-epoxypropoxy) propyl trimethoxy silane or 3-methacryloxy propyl trimethoxy silane is adopted to modify silicon dioxide to obtain modified silicon dioxide, and the modified silicon dioxide is applied to polyurethane coating, so that the wear resistance is about 7.5 ten thousand times, the improvement of the wear resistance is limited, and the further improvement is needed. Disclosure of Invention The application provides a wear-resistant scratch-resistant outdoor fabric and a preparation method thereof, in order to improve the wear-resistant times of the wear-resistant scratch-resistant coating and further improve the wear resistance of the wear-resistant scratch-resistant outdoor fabric. In a first aspect, the application provides an abrasion-resistant scratch-resistant outdoor fabric, which adopts the following technical scheme: The wear-resistant scratch-resistant outdoor fabric comprises base fabric and a wear-resistant scratch-resistant coating adhered to the surface of the base fabric, wherein the wear-resistant scratch-resistant coating is mainly prepared from, by weight, 45-55 parts of waterborne polyurethane, 15-25 parts of waterborne epoxy resin, 4-6 parts of isocyanate curing agent, 9-11 parts of modified nano silicon dioxide, 2-4 parts of thickener, 0.5-1.5 parts of leveling agent, 1-3 parts of ultraviolet absorbent, 0.5-1.5 parts of antioxidant and 25-35 parts of water, and the modified nano silicon dioxide is prepared by treating nano silicon dioxide with 3-methacryloxypropyl trimethoxysilane, 2- (trifluoromethyl) acrylic acid and hydrogen phosphate di (methacryloxyethyl) ester. According to the wear-resistant scratch-resistant outdoor fabric, the wear-resistant scratch-resistant coating is arranged on the surface of the base fabric, and the wear-resistant times are more than 9 ten thousand times, the retention rate of wear-resistant times after washing for 50 times is more than 92%, and the peeling strength is more than 22 by utilizing the mutual coordination of the raw materials, so that the wear-resistant scratch-resistant outdoor fabric has the advantages of high wear resistance, good wear-resistant durability and strong adhesive force, has good comprehensive performance, and meets market demands. According to the wear-resistant scratch-resistant coating disclosed by the application, the water-based polyurethane and the water-based epoxy resin are added into the raw materials, and under the cooperation of the isocyanate curing agent, a resin network structure formed by interpenetrating polyurethane and epoxy resin is formed, so that the balance of hardness and softness is achieved, and the wear-resistant scratch-resistant coating has good flexibility and hardness. On the basis, modified nano silicon dioxide is added into the raw materials, 3-methacryloxypropyl trimethoxy silane, 2- (trifluoromethyl) acrylic acid and hydrogen phosphate di (methacryloxyethyl) are grafted on the nano silicon dioxide, a large number of groups such as silicon oxygen groups, ester groups, fluorine groups and phosphate groups are introduced, so that aggregation is reduced, dispersibility is improved, compatibility is also improved, a network structure is improved, compactness is improved, structural defects such as gaps and pinholes are reduced, stress transmission uniformity is improved, local stress concentration is reduced, interface binding force and stability are improved, triple synergistic firm combination of particle-resin-base cloth is formed, wear-resistant times are improved, wear-resistant times retention rate for 50 times in water washing and stripping strength are improved, service stability and service life are prolonged, and the wear-resistant scratch-resistant outdoor fabric has better comprehensive performance. Optionally, the modified nano-silica is prepared by the following method: t1,