Wear-resistant film-coated windproof fabric and preparation method thereof

Abstract

The invention relates to a wear-resistant film-covered windproof fabric and a preparation method thereof.The fabric comprises an inner layer and a film-covered windproof surface layer, the film-covered windproof surface layer is obtained by evenly coating the surface of base cloth with a modified polyurethane solution and then drying, and the modified polyurethane solution is prepared from, by weight, 20-30 parts of water. Comprising 60-68 parts of a waterborne polyurethane solution, 10-16 parts of a biomass extract, 12-16 parts of silicon dioxide, 5-8 parts of a thickening agent and 3-7 parts of a dispersing agent. The fabric prepared by the preparation method disclosed by the invention has high wear resistance, wind resistance, ultraviolet resistance and flame retardance, is a wear-resistant film-coated wind-resistant fabric, and can be used as a down jacket fabric, so that not only can the durability and protection performance of a down jacket be remarkably improved, but also the requirements of different users in diversified environments can be met, and the fabric is worthy of popularization and application. The method has important practical significance.

Description

Technical Field

[0001] The invention belongs to the technical field of fabrics, and in particular relates to a wear-resistant film-coated windproof fabric and a preparation method thereof. Background Art

[0002] With the rapid development of outdoor sports and functional clothing, the market demand for multifunctional down jacket fabrics that are wear-resistant, windproof, UV-resistant and flame-retardant is growing. These characteristics can not only improve the durability and protective performance of clothing, but also meet the needs of different users in diverse environments.

[0003] However, traditional polyester or nylon fabrics often have certain deficiencies in these functional aspects, such as poor UV resistance, which cannot effectively block the harm of ultraviolet rays to the human body; insufficient flame retardancy, and safety hazards, etc., which makes it difficult for the fabric to have high wear resistance, windproofness, UV resistance, and flame retardancy at the same time. To this end, the present invention provides a wear-resistant coated windproof fabric and a preparation method thereof to solve the above technical problems. Summary of the Invention

[0004] The purpose of the present invention is to provide a wear-resistant film-coated windproof fabric and a preparation method thereof in order to solve the above problems.

[0005] The present invention achieves the above-mentioned purpose through the following technical solutions:

[0006] A wear-resistant film-coated windproof fabric, comprising an inner layer and a film-coated windproof surface layer, wherein the film-coated windproof surface layer is obtained by uniformly coating a modified polyurethane solution on the surface of a base fabric and then drying the solution;

[0007] The raw materials for preparing the modified polyurethane solution include, by weight, 60-68 parts of 35-50% aqueous polyurethane solution, 10-16 parts of biomass extract, 12-16 parts of silicon dioxide, 5-8 parts of thickener, and 3-7 parts of dispersant.

[0008] As a further optimization solution of the present invention, the inner layer is cotton cloth; the warp and weft fineness of the cotton cloth is 35-50D, the weaving density of the warp yarn is 55-85 pieces / cm, and the weaving density of the weft yarn is 60-70 pieces / cm;

[0009] The base fabric is made of polyester or nylon fabric; the warp and weft fineness of the base fabric is 25-45D, the weaving density of the warp yarn is 70-100 yarns / cm, and the weaving density of the weft yarn is 55-80 yarns / cm.

[0010] As a further optimization solution of the present invention, the coating thickness is 0.1-0.5 mm.

[0011] As a further optimized solution of the present invention, the dispersant is at least one of sodium polyacrylate and polyvinyl pyrrolidone; and the thickener is at least one of guar gum, carboxymethyl cellulose and hydroxyethyl cellulose.

[0012] The present invention also provides a method for preparing a wear-resistant film-coated windproof fabric, which specifically comprises the following steps:

[0013] (1) stirring the biomass extract and the aqueous polyurethane solution under heat preservation and heating conditions to obtain a mixed system 1;

[0014] (2) adding silicon dioxide to the mixed system 1, and sequentially adding a dispersant and a thickener, and obtaining a modified polyurethane solution after ultrasonic dispersion treatment;

[0015] (3) The modified polyurethane solution is evenly coated on the surface of the base fabric, and after drying, a film-coated windproof surface layer is obtained, and the film-coated windproof surface layer and the inner layer fabric are hot-pressed to obtain a wear-resistant film-coated windproof fabric.

[0016] As a further optimization solution of the present invention, the heat preservation and heating time is 3-6 hours and the temperature is 35°C-45°C.

[0017] As a further optimization solution of the present invention, the power of the ultrasonic dispersion treatment is 100-150 W, the frequency is 35-50 kHz, the temperature is 35-40° C., and the time is 30-50 min.

[0018] As a further optimization scheme of the present invention, the method for obtaining the biomass extract is specifically as follows: the biomass is mixed with an acid solution with a mass concentration of 5%-20% and soaked for 5-8 hours, with a mass ratio of material to liquid being 1:10-16, and then oscillated and extracted at a temperature of 60-80°C for 2-3 hours, and the obtained supernatant is concentrated and dried to obtain the extract.

[0019] As a further optimized solution of the present invention, the biomass includes at least one of sesame meal, rapeseed meal, and wood chaff.

[0020] As a further optimized solution of the present invention, the acid solution is a hydrochloric acid solution or an acetic acid solution.

[0021] The beneficial effects of the present invention are:

[0022] 1) The fabric prepared by the preparation method of the present invention has high wear resistance, wind resistance, UV resistance, and flame retardancy, and is a wear-resistant, film-coated, windproof fabric. Using this fabric as a down jacket fabric can not only significantly improve the durability and protective performance of the down jacket, but also meet the needs of different users in diverse environments, which has important practical significance;

[0023] 2) The present invention adds a biomass extract obtained by extracting biomass with an acid solution (particularly a biomass extract obtained by extracting a mixture of sesame meal and wood chaff with an acid solution) to a mixed system of silica-modified waterborne polyurethane, and then coats the modified polyurethane solution on the surface of the fabric, which can significantly improve the wear resistance, windproofness, UV resistance and flame retardancy of the fabric, with significant effects. DETAILED DESCRIPTION

[0024] The present application is described in further detail below. It is necessary to point out that the following specific implementation methods are only used to further illustrate the present application and cannot be understood as limiting the scope of protection of the present application. Technicians in this field can make some non-essential improvements and adjustments to the present application based on the above application content.

[0025] 1. Materials

[0026] 1. Sodium polyacrylate and polyvinyl pyrrolidone were purchased from Shanghai Chuangsai Technology Co., Ltd. with a purity of 99%;

[0027] 2. Guar gum, carboxymethyl cellulose, and hydroxyethyl cellulose were purchased from Jiangsu Yihaotian Biotechnology Co., Ltd. with a purity of 99%;

[0028] 3. Waterborne polyurethane was purchased from Hubei Xinrunde Chemical Co., Ltd. with a purity of 99%. A 30-50% by mass aqueous polyurethane solution was obtained by mixing waterborne polyurethane with deionized water. The following experiments used a 38% by mass aqueous polyurethane solution.

[0029] 4. The base layer of the present invention is a polyester fabric; the warp and weft fineness of the base fabric is 28D, the weaving density of the warp yarn is 75 pieces / cm, and the weft yarn weaving density is 65 pieces / cm;

[0030] 5. The inner layer of the present invention is cotton cloth, the warp and weft fineness of the cotton cloth is 40D, the weaving density of the warp yarn is 65 pieces / cm, and the weaving density of the weft yarn is 60 pieces / cm.

[0031] In the following examples, any method not specified may be carried out according to conventional methods. Other materials and reagents used may be obtained through commercial channels unless otherwise specified.

[0032] 2. Methods

[0033] 2.1 Preparation of wear-resistant coated windproof fabric

[0034] A method for preparing a wear-resistant film-coated windproof fabric, the specific steps are as follows:

[0035] The raw materials for preparing the modified polyurethane solution are calculated by weight, including 68 parts of a 38% aqueous polyurethane solution, 10 parts of a biomass extract, 12 parts of silicon dioxide, 6 parts of a thickener, and 4 parts of a dispersant;

[0036] (1) Sesame meal was mixed with a 14% acid solution and soaked for 6 h at a material-liquid mass ratio of 1:12. The mixture was then shaken and extracted at 75°C for 2.5 h. The resulting supernatant was concentrated and dried to obtain a biomass extract.

[0037] (2) The biomass extract and a 38% by mass aqueous polyurethane solution were heated at 42° C. for 4 h while being continuously stirred and mixed, and a mixed system 1 was obtained after the heating and heating; silicon dioxide was added to the mixed system 1, and sodium polyacrylate and carboxymethyl cellulose were added in sequence, and a modified polyurethane solution was obtained after ultrasonic dispersion treatment;

[0038] (3) The modified polyurethane solution is evenly coated on the surface of the base fabric with a coating thickness of 0.35 mm. After drying, a film-coated windproof surface layer is obtained. The film-coated windproof surface layer and the inner layer fabric are hot-pressed to obtain a wear-resistant film-coated windproof fabric A1.

[0039] 2.2 Adjustment of raw materials for the preparation of wear-resistant coated windproof fabrics

[0040] In order to study the effects of different biomass extracts on the properties of fabrics, based on the preparation of the wear-resistant film-coated windproof fabric of group A1 above, the raw materials for the preparation of biomass extracts were adjusted. The specific adjustments are shown in Table 1:

[0041] Table 1 Adjustment details of raw materials for preparation of different biomass extracts

[0042]

[0043]

[0044] In order to study the effects of modified waterborne polyurethane with different biomass extracts and silica on the properties of fabrics, corresponding control and blank groups were also designed, as follows:

[0045] Control group 1: Based on group B3, the raw materials for preparing the modified polyurethane solution were adjusted. In this control group, the raw materials included 78 parts of a 38% aqueous polyurethane solution, 12 parts of silicon dioxide, 6 parts of a thickener, and 4 parts of a dispersant, calculated by weight.

[0046] Control group 2: Based on group B3, the raw materials for preparing the modified polyurethane solution were adjusted. In this control group, the raw materials included 80 parts of a 38% aqueous polyurethane solution, 10 parts of a biomass extract, 6 parts of a thickener, and 4 parts of a dispersant, by weight.

[0047] Control group 3: Based on group B3, the raw materials for preparing the modified polyurethane solution were adjusted. In this control group, the raw materials included 90 parts of a 38% aqueous polyurethane solution, 6 parts of a thickener, and 4 parts of a dispersant, calculated by weight.

[0048] Blank group: The base fabric without film coating was directly hot-pressed with the inner fabric to obtain the fabric.

[0049] 3. Performance Testing

[0050] 3.1. Fabric breathability test

[0051] The air permeability of fabrics in groups A1-A7, B1-B3, control groups 1-3, and a blank group was tested. According to the national standard (GB / T5433), the air permeability of the samples was tested using a YG461G automatic fabric air permeability meter. The experimental parameters were set as follows: ambient temperature 28°C, relative humidity 50%, pressure differential 110 Pa, and air permeability area 25 cm. 2 The diameter of the air nozzle is 0.6mm. The fabric samples were tested 5 times at different locations, and the average value was taken as the final air permeability data, which is recorded in Table 2:

[0052] Table 2 Fabric air permeability performance test data

[0053]

[0054] Experimental conclusion: From the data in Table 2, it can be seen that the air permeability of the fabrics in group A2, group A3, group A7, group B2, group B3 and control group 1 is poor, indicating that the fabrics have good windproof effect. Among them, the windproof effect of the fabrics in group A3, group A7 and group B3 is more prominent.

[0055] 3.2 Fabric wear resistance test

[0056] The fabrics of the above-mentioned groups A1-A7, B1-B3, control groups 1-3, and blank groups were subjected to a wear resistance test. The test was carried out in accordance with the standard GB / T21196.2-2007 "Determination of the Abrasion Resistance of Textiles by the Martindale Method" to detect their wear resistance index Ai (average mass loss per friction). The experimental data are recorded in Table 3:

[0057] Table 3 Fabric wear resistance test data

[0058]

[0059] Experimental conclusion: It can be seen from the data in Table 3 that compared with the control group and the blank group, the wear resistance of the fabrics in groups A3 and B3 is significantly improved. This shows that the biomass extract obtained by extracting biomass with an acid solution, especially the biomass extract obtained by extracting a mixture of sesame meal and wood chaff with an acid solution, is added to the mixed system of silica-modified waterborne polyurethane and then coated on the surface of the fabric. The wear resistance of the fabric can be significantly improved. Combined with the above-mentioned fabric air permeability experiment, it can be seen that the windproof effect of the fabrics in groups A3 and B3 is also good, and they can have both high wear resistance and high windproofness.

[0060] 3.3 Fabric UV resistance and flame retardant performance test

[0061] The fabrics in Groups A1-A7, B1-B3, and Control Groups 1-3 and the blank group were tested for UV resistance. Testing was performed using a UV-2000F textile UV resistance factor tester in accordance with GB / T 18830-2009, "Evaluation of the UV Protection of Textiles." Ten points were taken at different locations on each sample to measure the UV protection factor (UPF) against UV light with a wavelength of 200-400nm. This is used as an evaluation criterion for UV resistance. A higher UPF value indicates better UV protection. Generally, a UPF value greater than 40 indicates excellent UV protection.

[0062] The flame retardancy tests were conducted on the fabrics in the above-mentioned groups A1-A7, B1-B3, control groups 1-3, and blank groups. The tests were conducted in accordance with GB / T5455-1997 "Textiles Burning Performance Test Vertical Method". Fabric samples were cut into rectangular strips measuring 280 mm × 125 mm. The fabric samples were placed in the testing equipment and ignited at their lower ends. The testing equipment recorded the burning process of the samples and classified them into different grades based on their performance (the flame retardancy evaluation criteria are shown in Table 4).

[0063] Table 4 Flame retardant grade evaluation standards

[0064]

[0065] The test data of the fabric's UV resistance and flame retardancy are shown in Table 5:

[0066] Table 5 Test data of fabric's UV resistance and flame retardancy

[0067]

[0068]

[0069] Experimental conclusion: Based on the data in Table 5, it can be seen that the fabrics of group A3 and group B3 both show significant advantages in UV resistance. Among them, the fabric of group B3 is the best solution, and its flame retardant grade is also V-0. This shows that the fabric of group B3 is the best solution. This fabric has high wear resistance, windproofness, UV resistance, and flame retardancy. It is a wear-resistant coated windproof fabric. It also shows that there may be a certain synergistic effect between the biomass extract obtained by acid solution extraction of biomass mixed with sesame meal and wood chaff and silica, which can improve the wear resistance, windproofness, UV resistance and flame retardancy of the fabric.

[0070] The above-described embodiments merely illustrate several implementations of the present invention. While the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of the present invention. 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, and all such variations and improvements fall within the scope of protection of the present invention.

Claims

1. A wear-resistant film-coated windproof fabric, characterized by: The fabric comprises an inner layer and a film-coated windproof surface layer, wherein the film-coated windproof surface layer is obtained by uniformly coating a modified polyurethane solution on the surface of a base fabric and then drying the solution; The raw materials for preparing the modified polyurethane solution include, by weight, 60-68 parts of 35-50% aqueous polyurethane solution, 10-16 parts of biomass extract, 12-16 parts of silicon dioxide, 5-8 parts of thickener, and 3-7 parts of dispersant.

2. The wear-resistant film-coated windproof fabric according to claim 1, characterized in that: The inner layer is made of cotton cloth; the warp and weft fineness of the cotton cloth is 35-50D, the weaving density of the warp yarn is 55-85 yarns / cm, and the weaving density of the weft yarn is 60-70 yarns / cm; The base fabric is made of polyester or nylon fabric; the warp and weft fineness of the base fabric is 25-45D, the weaving density of the warp yarn is 70-100 yarns / cm, and the weaving density of the weft yarn is 55-80 yarns / cm.

3. The wear-resistant film-coated windproof fabric according to claim 1, characterized in that: The coating thickness is 0.1-0.5 mm.

4. The wear-resistant film-coated windproof fabric according to claim 1, characterized in that: The dispersant is at least one of sodium polyacrylate and polyvinyl pyrrolidone; the thickener is at least one of guar gum, carboxymethyl cellulose and hydroxyethyl cellulose.

5. A method for preparing the wear-resistant film-coated windproof fabric according to any one of claims 1 to 4, characterized in that: The specific steps include: (1) stirring the biomass extract and the aqueous polyurethane solution under heat preservation and heating conditions to obtain a mixed system 1; (2) adding silicon dioxide to the mixed system 1, and sequentially adding a dispersant and a thickener, and obtaining a modified polyurethane solution after ultrasonic dispersion treatment; (3) The modified polyurethane solution is evenly coated on the surface of the base fabric, and after drying, a film-coated windproof surface layer is obtained, and the film-coated windproof surface layer and the inner layer fabric are hot-pressed to obtain a wear-resistant film-coated windproof fabric.

6. The method for preparing a wear-resistant film-coated windproof fabric according to claim 5, characterized in that: The heat preservation and heating time is 3-6 hours, and the temperature is 35° C.-45° C.

7. The method for preparing a wear-resistant film-coated windproof fabric according to claim 5, characterized in that: The ultrasonic dispersion treatment has a power of 100-150W, a frequency of 35-50kHz, a temperature of 35-40°C, and a time of 30-50min.

8. The method for preparing a wear-resistant film-coated windproof fabric according to claim 5, characterized in that: The method for obtaining the biomass extract is specifically as follows: mixing the biomass with an acid solution with a mass concentration of 5%-20% and soaking them for 5-8 hours, with a mass ratio of material to liquid being 1:10-16, then extracting them by oscillation at a temperature of 60-80°C for 2-3 hours, and concentrating and drying the obtained supernatant.

9. The method for preparing a wear-resistant film-coated windproof fabric according to claim 8, characterized in that: The biomass includes at least one of sesame meal, rapeseed meal, and wood chaff.

10. The method for preparing a wear-resistant film-coated windproof fabric according to claim 8, characterized in that: The acid solution is a hydrochloric acid solution or an acetic acid solution.

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