Washing-resistant and perspiration-resistant chinlon fabric and preparation method thereof

Abstract

The invention relates to the field of chinlon fabrics, in particular to a washable and perspiration-resistant chinlon fabric and a preparation method thereof. The preparation method of the washing-resistant and perspiration-resistant chinlon fabric comprises the following steps: step 1, dyeing chinlon gray cloth by using cloth dyeing liquid to obtain dyed cloth; step 2, carrying out color fixing treatment on the dyed cloth by using a color fixing solution, namely step 2a, feeding water into a dye vat, and adding organic acid A under the condition of 75-85 DEG C; step 2b, adding a color fixing agent, a ginkgo biloba extract, a radix scutellariae extract and a lotus leaf extract into the material obtained in the step 2a to form a color fixing solution, and carrying out color fixing treatment; step 2c, cooling and draining; and step 3, loosening, drying and shaping the fabric to obtain the washable and perspiration-resistant chinlon fabric. According to the chinlon fabric provided by the invention, the color fastness of the chinlon fabric can be effectively improved, and the requirements of consumers on washing resistance and perspiration resistance of fluorescent yoga trousers are met.

Description

Technical Field

[0001] The present application relates to the field of nylon fabrics, and more specifically, to a nylon fabric that is resistant to water washing and sweat stains and a preparation method thereof. Background Art

[0002] In the fashion and sportswear market, especially in the field of yoga pants, fluorescent colors have won wide popularity with their bright visual impact. However, while most fluorescent yoga pants on the market pursue bright colors, they face a defect that cannot be ignored - insufficient color fastness. This problem not only weakens the visual beauty and durability of the product, but also may cause direct contact with human skin due to dye shedding, thus causing potential health risks.

[0003] The main reasons for the low color fastness of fluorescent yoga pants are: first, improper selection of dyes. Traditional fluorescent dyes have weak binding force with fibers and are easy to fall off under the action of washing or sweat stains; second, the dyeing process is unreasonable, and the dye fails to fully combine with the fiber, resulting in insufficient fixation of the dye inside the fiber. The fabric is prone to color fading and dye shedding under the erosion of water and sweat stains, which changes the fabric structure and weakens its water and sweat resistance. Summary of the invention

[0004] In order to solve the above problems, the present application provides a nylon fabric that is resistant to water washing and sweat stains and a preparation method thereof. The nylon fabric provided in the present application can effectively improve the color fastness of the nylon fabric and meet the consumer's demand for fluorescent color yoga pants in terms of water washing resistance and sweat stain resistance.

[0005] In a first aspect, the present application provides a method for preparing a nylon fabric that is resistant to water washing and sweat stains, using the following technical solution: A method for preparing a nylon fabric that is resistant to water washing and sweat stains, comprising the following steps: Step 1: dyeing the nylon grey fabric with a dyeing liquid to obtain a dyed fabric; Step 2: Use a fixing solution to fix the dyed fabric, including the following steps: Step 2a: Add water into the dyeing vat so that the bath ratio of the nylon grey cloth is 1:(15-30), and then add organic acid A at 75-85°C; Step 2b: Add a color fixing agent, ginkgo extract, scutellaria extract, and lotus leaf extract to the material of step 2a to form a color fixing solution, and soak the solution in a warm-keeping manner for color fixing treatment; Step 2c: Cool down to 35-45°C and drain; Step 3: Loosen the cloth, dry it, and shape it to obtain a nylon fabric that is resistant to water and sweat.

[0006] The synergistic combination of ginkgo extract, scutellaria extract and lotus leaf extract not only enhances the chemical bonding between the dye and the fiber, but also forms a protective adsorption layer on the fiber surface through local charge interaction. This adsorption layer can not only effectively block the erosion of water and sweat stains, but also further improve the overall performance of the fabric, making the nylon fabric more durable and long-lasting while maintaining its original excellent properties.

[0007] Specifically, in an acidic environment, the dyed cloth (nylon fabric) exhibits positive charge, which provides ideal adsorption conditions for ginkgo extract, scutellaria extract, and lotus leaf extract.

[0008] Ginkgo extract is rich in flavonoids, which have strong antioxidant properties. They can not only effectively remove free radicals and prevent the degradation of dye molecules due to oxidation, but also produce strong adsorption through the negative charge they carry and the positive charge on the surface of nylon fabrics, so that they can be tightly attached to the fiber surface. This tight adsorption not only protects the fiber and reduces the damage that may be caused during the color fixation process, but also optimizes the combination conditions of dye and fiber, laying a solid foundation for improving color fastness. Scutellaria baicalensis extract is also rich in flavonoids. These ingredients not only have antibacterial and anti-inflammatory effects, but also can interact with the positive charge on the surface of nylon fabrics through their specific functional groups, further consolidating the combination of dye and fiber.

[0009] The strong adsorption effect of Scutellaria baicalensis extract not only reduces the dye shedding caused by microbial activity and enhances the color fastness of the fabric, but also complements the ginkgo extract through its antioxidant properties to jointly maintain the stability of the dye molecules.

[0010] Lotus leaf extract, with its unique bioactive ingredients, such as nuciferine and flavonoids, further improves the performance of nylon fabrics. Under acidic conditions, certain components of lotus leaf extract strongly adsorb to the positive charges on the surface of nylon fabrics through charge interaction, thus forming a protective film on the fiber surface. This protective film not only improves the water resistance and sweat resistance of the fabric, but also further consolidates the color fastness, so that the nylon fabric can still maintain bright colors and excellent texture in long-term use.

[0011] Preferably, in the fixing solution, the concentration of organic acid A is 0.1-1 g / L, the concentration of ginkgo extract is 1-5 g / L, the concentration of scutellaria extract is 1-5 g / L, and the concentration of lotus leaf extract is 5-10 g / L; The dosage of the fixing agent is 10-20% of the mass of the nylon grey cloth.

[0012] Preferably, in the fixing solution, the concentration of organic acid A is 0.5 g / L, the concentration of ginkgo extract is 2 g / L, the concentration of scutellaria baicalensis extract is 3 g / L, and the concentration of lotus leaf extract is 8 g / L; The amount of fixing agent used is 15% of the mass of the nylon grey cloth.

[0013] By adopting the above technical scheme, the dosage and coordination relationship of each raw material in the fixing solution is further limited, and the synergistic coordination of ginkgo extract, scutellaria baicalensis extract and lotus leaf extract is fully utilized, so that the dye is more firmly adsorbed on the nylon fabric, and the chemical bond between the dye and the fiber is effectively enhanced, thereby improving the color fastness of the nylon fabric, and maintaining excellent performance even after multiple washings and sweat soaking.

[0014] Preferably, the organic acid A in the fixing solution includes a mixture of one or more of DL-malic acid and citric acid.

[0015] Preferably, when dyeing the nylon grey cloth with the dyeing liquid in step 1, the steps include: step 1a: mixing the dye, an appropriate amount of water, and 40-60% of an acid leveling agent until uniform, to obtain a pre-dyeing liquid; Step 1b: Pump a certain amount of water into the dyeing tank, and add the nylon grey fabric and the remaining leveling agent under the influence of the water flow; Step 1c: Add the pre-dyed cloth liquid to the material in step 1b and mix, control the amount of water so that the bath ratio of the nylon grey cloth is 1:(15-30), and heat to 75-85°C for insulation; Step 1d: adding organic acid B to the material of step 1c to form a dyeing liquid, and then keeping the temperature at 100-110°C for dyeing, and then cooling to 35-45°C, draining, and obtaining dyed cloth.

[0016] By further defining the specific dyeing treatment method, it is possible to ensure that nylon fabrics obtain more stable color fastness during the dyeing process, which helps to fully combine the dye with the fiber and reduce the shedding of the dye during washing, friction, etc., thereby improving the color fastness stability of the fabric. It also provides a good foundation for the subsequent combination of the fixing solution and the dyed fabric.

[0017] Preferably, in the dyeing liquid, the concentration of the acid leveling agent is 1-3 g / L, and the concentration of the organic acid B is 0.1-0.5 g / L; The amount of dye used is 1-5% of the mass of the nylon grey cloth.

[0018] Preferably, the organic acid B in the dyeing liquid includes a mixture of one or more of DL-malic acid and citric acid.

[0019] In a second aspect, the present application provides a nylon fabric that is resistant to washing and sweat stains.

[0020] The nylon fabric provided in this application not only retains the high strength, wear resistance and good elasticity of nylon, but also achieves significant improvements in water washing resistance and sweat resistance. Even after multiple washings or high-intensity exercise, the fabric can still maintain a stable color and texture, effectively avoiding color fading caused by dye shedding. In addition, its excellent durability and comfortable wearing experience also bring consumers a more worry-free and comfortable sports life.

[0021] In summary, this application has the following beneficial effects: 1. In the color fixing solution of the present application, the ginkgo extract, scutellaria extract and lotus leaf extract work synergistically to enhance the chemical bonding between the dye and the nylon fiber and form a protective adsorption layer on the fiber surface. This layer effectively blocks water and sweat stains, while improving the durability of the fabric, maintaining the original characteristics of nylon and extending its service life.

[0022] 2. This application further defines the specific treatment methods for dyeing and fixing, which can ensure that nylon fabrics obtain more stable color fastness during the dyeing process, help fully combine the dye with the fiber, reduce the shedding of the dye during washing, friction, etc., and thus improve the color fastness stability of the fabric. It also provides a good foundation for the subsequent combination of fixing solution and dyed fabric.

[0023] 3. The nylon fabric provided in this application not only retains the high strength, wear resistance and good elasticity of nylon, but also achieves significant improvements in water washing resistance and sweat resistance. Even after multiple washings or high-intensity exercise, the fabric can still maintain a stable color and texture, effectively avoiding color fading caused by dye shedding. In addition, its excellent durability and comfortable wearing experience also bring consumers a more worry-free and comfortable sports life. DETAILED DESCRIPTION

[0024] The present application is further described in detail below with reference to the embodiments.

[0025] The raw materials used in the following examples and comparative examples are all commercially available products. Example

[0026] Example 1 A method for preparing a nylon fabric that is resistant to water washing and sweat stains, comprising the following steps: Step 1: Use dyeing liquid to dye the nylon grey fabric.

[0027] The dyeing solution includes 2g / L acid leveling agent, 0.4g / L organic acid B, dye, and water.

[0028] The amount of dye used is 3.6% of the mass of the nylon grey cloth.

[0029] The acid leveling agent is commercially available as DM-2209 from Fujian Jinjiang Xindemei Chemical Co., Ltd.

[0030] Organic acid B is citric acid.

[0031] The dyes are CI Acid Red 52 at 2.7% of the weight of the nylon grey fabric and CI Acid Yellow 184 at 0.9% of the weight of the nylon grey fabric.

[0032] The dyeing process specifically includes the following steps: Step 1a: Put the dye into an open barrel, slowly add water, add 50% acid leveling agent, use a stirrer to stir until uniform, and obtain pre-dyed cloth liquid.

[0033] Step 1b: Place the nylon grey fabric into the dye vat and soak it in the remaining water. Add the remaining acid leveling agent linearly over 10 minutes and run for 5 minutes after addition.

[0034] Step 1c: Add the pre-dye solution to the dye tank linearly over 30 minutes and run for 5 minutes after addition.

[0035] The amount of water was controlled so that the bath ratio of the nylon grey cloth was 1:20, and then the temperature was raised to 80°C at a heating rate of 2°C / min and kept warm for 10 minutes.

[0036] Step 1d: Add organic acid B into the dyeing tank in a linear manner over 20 minutes to form the dyeing solution, and run for 10 minutes after addition.

[0037] The temperature was raised to 105°C at 1.5°C / min and kept for 30 min, then lowered to 40°C at 2°C / min and drained to obtain dyed cloth.

[0038] Step 2: Use fixing solution to fix the dyed cloth.

[0039] The color fixing solution includes 0.5 g / L organic acid A, a color fixing agent, 2 g / L ginkgo extract, 3 g / L scutellaria extract, 8 g / L lotus leaf extract, and water.

[0040] Organic acid A is citric acid.

[0041] The fixing agent is commercially available, namely Able-Fast FIX nylon active fixing agent, and the amount of the fixing agent used is 15% of the weight of the nylon grey fabric.

[0042] Ginkgo extract is commercially available and in this example was purchased from Gansu Yishengxiang Biotechnology Co., Ltd. with a specification of 10:1.

[0043] The scutellaria baicalensis extract is commercially available and in this example was purchased from Shanyang Lianfeng Biotechnology Co., Ltd. with a specification of 10:1.

[0044] Lotus leaf extract is commercially available and in this example was purchased from Shanyang Lianfeng Biotechnology Co., Ltd. with a specification of 10:1.

[0045] The color fixing process specifically includes the following steps: Step 2a: Refill the dye vat (with the dyed cloth in it) with water, and control the water volume so that the bath ratio of the dyed cloth is 1:20.

[0046] Add organic acid A and raise the temperature to 80°C at 3°C / min.

[0047] Step 2b: linearly add the fixing agent, ginkgo extract, scutellaria extract and lotus leaf extract into the dye vat for 10 minutes to form a fixing solution, and keep warm for 25 minutes.

[0048] Step 2c: Cool down to 40℃ at 2.5℃ / min and drain the water out of the tank.

[0049] Step 3: After the wet cloth comes out of the vat, it is loosened, dried, and the finished product is shaped to obtain a nylon fabric that is resistant to water washing and sweat stains.

[0050] Example 2 A method for preparing a washable and sweat-resistant nylon fabric, which is different from that of Example 1 in that: The dyeing solution includes 1g / L acid leveling agent, 0.1g / L organic acid B, dye, and water.

[0051] The amount of dye used is 1% of the mass of the nylon grey fabric.

[0052] The dyes are CI Acid Red 52 at 0.75% by weight of the nylon grey fabric and CI Acid Yellow 184 at 0.25% by weight of the nylon grey fabric.

[0053] The color fixing solution includes 0.1 g / L organic acid A, a color fixing agent, 1 g / L ginkgo extract, 1 g / L scutellaria extract, 5 g / L lotus leaf extract, and water.

[0054] The dosage of the fixing agent is 10% of the mass of the nylon grey cloth.

[0055] In step 1a, 40% of an acid leveling agent is added.

[0056] In step 1c, the pre-dyeing liquid is linearly added to the dyeing tank for 30 minutes, and the temperature is then raised to 75°C at 2°C / min and kept for 10 minutes. The bath ratio of the nylon grey cloth is 1:15.

[0057] In step 1d, organic acid B is added to the dyeing vat in a linear manner for 20 minutes, and the temperature is run for 10 minutes after the addition is completed; then the temperature is increased to 100°C at 1.5°C / min and kept for 30 minutes, and then the temperature is decreased to 35°C at 2°C / min and drained to obtain dyed cloth.

[0058] In step 2a, water is refilled into the dye vat (with the dyed cloth in the vat), organic acid A is added, and the temperature is raised to 75°C at 3°C / min. The bath ratio of the dyed cloth is 1:15.

[0059] Example 3 A method for preparing a washable and sweat-resistant nylon fabric, which is different from that of Example 1 in that: The dyeing solution includes 3g / L acid leveling agent, 0.5g / L organic acid B, dye, and water.

[0060] The amount of dye used is 5% of the mass of the nylon grey fabric.

[0061] The dyes are CI Acid Red 52 at 3.75% of the weight of the nylon grey fabric and CI Acid Yellow 184 at 1.25% of the weight of the nylon grey fabric.

[0062] The color fixing solution includes 1g / L organic acid A, a color fixing agent, 5g / L ginkgo extract, 5g / L scutellaria extract, 10g / L lotus leaf extract, and water.

[0063] The dosage of the fixing agent is 20% of the mass of the nylon grey cloth.

[0064] In step 1a, 60% of an acid leveling agent is added.

[0065] In step 1c, the pre-dyeing liquid is linearly added to the dyeing tank for 30 minutes, and the temperature is then raised to 85°C at 2°C / min and kept for 10 minutes. The bath ratio of the nylon grey cloth is 1:30.

[0066] In step 1d, organic acid B is added to the dyeing vat in a linear manner for 20 minutes, and the temperature is run for 10 minutes after the addition is completed; then the temperature is increased to 110°C at 1.5°C / min and kept for 30 minutes, and then the temperature is decreased to 35°C at 2°C / min and drained to obtain dyed cloth.

[0067] In step 2a, water is refilled into the dye vat (with the dyed cloth in the vat), organic acid A is added, and the temperature is raised to 85° C. at 3° C. / min. The bath ratio of the dyed cloth is 1:30.

[0068] Comparative Example Comparative Example 1 A method for preparing a nylon fabric that is resistant to water washing and sweat stains, which is different from Example 1 in that honeysuckle extract is used instead of ginkgo extract in the color fixing solution.

[0069] Honeysuckle extract is commercially available and was purchased from Shanyang Lianfeng Biotechnology Co., Ltd. in this comparative ratio with a specification of 10:1.

[0070] Comparative Example 2 A method for preparing a nylon fabric that is resistant to water washing and sweat stains, which is different from Example 1 in that a Sophora japonica flower extract is used in place of a Scutellaria baicalensis extract in the color fixing solution.

[0071] Sophora japonica extract is commercially available and was purchased from Shaanxi Bohong Health Industry Co., Ltd. in this comparative ratio with a specification of 10:1.

[0072] Comparative Example 3 A method for preparing a nylon fabric that is resistant to water washing and sweat stains, which is different from Example 1 in that aloe vera extract is used instead of lotus leaf extract in the color fixing solution.

[0073] Aloe vera extract is commercially available and was purchased from Shanyang Lianfeng Biotechnology Co., Ltd. in this comparative ratio with a specification of 10:1.

[0074] Comparative Example 4 A method for preparing a nylon fabric that is resistant to water washing and sweat stains, which is different from Example 1 in that ginkgo extract, scutellaria baicalensis extract, and lotus leaf extract are omitted in the color fixing solution.

[0075] Performance testing 1. Color fastness to water: According to the national standard GB / T 5713-2013 "Textiles - Tests for Color Fastness - Color Fastness to Water", the washable and sweat-resistant nylon fabrics of Examples 1-3 and Comparative Examples 1-4 were tested.

[0076] 2. Color fastness to perspiration: According to the national standard GB / T 3922-2013 “Textiles - Tests for Color Fastness - Color Fastness to Perspiration”, the washable and perspiration-resistant nylon fabrics of Examples 1-3 and Comparative Examples 1-4 were tested.

[0077] 3. Color fastness to rubbing: According to the national standard GB / T 3920-2008 "Textiles - Tests for Color Fastness - Color Fastness to Rubbing", the washable and sweat-resistant nylon fabrics of Examples 1-3 and Comparative Examples 1-4 were tested.

[0078] The test results are shown in Table 1.

[0079] Table 1 Comparative Example 4 is based on Example 1, omitting the ginkgo extract, scutellaria extract, and lotus leaf extract to perform color fixing treatment on the nylon fabric. According to the test data in Table 1, the nylon fabric of Comparative Example 4 is only at the level of 3-4 or 3 in terms of color fastness to water, color fastness to sweat, and color fastness to rubbing. The nylon fabrics of Examples 1-3 are at the level of more than 4 in terms of color fastness to water, color fastness to sweat, and color fastness to rubbing. By comparison, it can be seen that the results of the nylon fabrics of Examples 1-3 in each test are far better than those of Comparative Example 1. It is shown that the use of a color fixing solution containing ginkgo extract, scutellaria extract, and lotus leaf extract to treat the nylon fabric can indeed enhance the degree of bonding between the fiber and the dye, making it difficult for the dye to fall off, and having excellent color fastness to water, sweat, and rubbing.

[0080] Comparative Examples 1-3 are based on Example 1, and any of the ginkgo extract, scutellaria extract, and lotus leaf extract is replaced by other plant extracts. The obtained nylon fabric treated with the color fixing solution can only reach the level of 3-4 or 4 in the water color fastness, sweat color fastness, and rubbing color fastness tests. Although the results of Comparative Examples 1-3 are higher than those of Comparative Example 4, they are far less than the effect of Example 1. This shows that there is a special coordination effect between the ginkgo extract, scutellaria extract, and lotus leaf extract. If the combination of the three is destroyed, the special effect cannot be exerted, so that the treatment effect on the nylon fabric is greatly reduced, and the excellent water resistance, sweat resistance, and rubbing color fastness effects cannot be shown. Therefore, the ginkgo extract, scutellaria extract, and lotus leaf extract cannot be separated at will.

[0081] This specific embodiment is merely an explanation of the present application and is not a limitation of the present application. After reading this specification, those skilled in the art may make modifications to the present embodiment without any creative contribution as needed, but such modifications are protected by the patent law as long as they are within the scope of the claims of the present application.

Claims

1. A method for preparing a nylon fabric that is resistant to water washing and sweat stains, characterized in that: The following steps are involved: Step 1: dyeing the nylon grey fabric with a dyeing liquid to obtain a dyed fabric; Step 2: Use a fixing solution to fix the dyed fabric, including the following steps: Step 2a: Add water into the dyeing vat so that the bath ratio of the dyed cloth is 1:(15-30), and then add organic acid A at 75-85°C; Step 2b: Add a color fixing agent, ginkgo extract, scutellaria extract, and lotus leaf extract to the material of step 2a to form a color fixing solution, and soak the solution in a warm-keeping manner for color fixing treatment; Step 2c: Cool down to 35-45°C and drain; Step 3: Loosen the cloth, dry it, and shape it to obtain a nylon fabric that is resistant to water and sweat.

2. The method for preparing the washable and sweat-resistant nylon fabric according to claim 1, characterized in that: In the color fixing solution, the concentration of organic acid A is 0.1-1 g / L, the concentration of ginkgo extract is 1-5 g / L, the concentration of scutellaria extract is 1-5 g / L, and the concentration of lotus leaf extract is 5-10 g / L; The dosage of fixing agent is 10-20% of the mass of nylon grey cloth.

3. The method for preparing the washable and sweat-resistant nylon fabric according to claim 2, characterized in that: In the fixing solution, the concentration of organic acid A is 0.5 g / L, the concentration of ginkgo extract is 2 g / L, the concentration of Scutellaria baicalensis extract is 3 g / L, and the concentration of lotus leaf extract is 8 g / L; The amount of fixing agent used is 15% of the mass of nylon grey cloth.

4. The method for preparing the washable and sweat-resistant nylon fabric according to claim 1, characterized in that: The organic acid A in the fixing solution includes a mixture of one or more of DL-malic acid and citric acid.

5. The method for preparing the washable and sweat-resistant nylon fabric according to claim 1, characterized in that: When the step 1 uses the dyeing liquid to dye the nylon grey cloth, the following steps are included: Step 1a: Mix the dye, appropriate amount of water and 40-60% of acid leveling agent until uniform to obtain pre-dyed cloth liquid; Step 1b: Pump a certain amount of water into the dyeing tank, and add the nylon grey fabric and the remaining leveling agent under the influence of the water flow; Step 1c: Add the pre-dyed cloth liquid to the material in step 1b and mix, control the amount of water so that the bath ratio of the nylon grey cloth is 1:(15-30), and heat to 75-85℃ for insulation; Step 1d: adding organic acid B to the material of step 1c to form a dyeing liquid, and then keeping the temperature at 100-110°C for dyeing, and then cooling to 35-45°C, draining, and obtaining dyed cloth.

6. The method for preparing the washable and sweat-resistant nylon fabric according to claim 5, characterized in that: In the dyeing liquid, the concentration of the acid leveling agent is 1-3 g / L, and the concentration of the organic acid B is 0.1-0.5 g / L; The amount of dye used is 1-5% of the mass of nylon grey fabric.

7. The method for preparing the washable and sweat-resistant nylon fabric according to claim 5, characterized in that: The organic acid B in the dyeing liquid includes a mixture of one or more of DL-malic acid and citric acid.

8. A nylon fabric obtained by the method for preparing a washable and sweat-resistant nylon fabric according to any one of claims 1 to 7.

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