Nano micro-molecular wool and cashmere fabric and preparation method thereof

Abstract

The invention relates to a nano micro-molecular wool / cashmere fabric and a preparation method thereof. The preparation method comprises the following steps: proportioning 15-20 parts of nano micro-molecular capsules, 2-5 parts of a softening agent, 1-3 parts of a nonionic surfactant, 1-4 parts of citric acid, 55-65 parts of an ethyl acrylate-methyl methacrylate copolymer aqueous dispersion and 10-20 parts of a chitosan solution to obtain a tilting agent; mixing with water to obtain a tilting solution, performing tilting treatment on the wool / cashmere yarn by using the tilting solution, and performing curing treatment to obtain the nano micro-molecular wool / cashmere yarn. The preparation method comprises the following steps: adsorbing eucalyptus essential oil, lemon grass essential oil, medium-chain triglyceride, nano-zinc oxide and nano-silver by using biomass activated carbon, coating with an ethyl acrylate-methyl methacrylate copolymer and chitosan to prepare a nano-micromolecule capsule, adding the nano-micromolecule capsule into a rolling solution system, and rolling to obtain the nano-micromolecule capsule containing the eucalyptus essential oil, the lemon grass essential oil, the medium-chain triglyceride, the nano-zinc oxide and the nano-silver. And after the wool and cashmere yarns are rolled and cured, the wool and cashmere yarns have lasting bacteriostasis, and the wear resistance and shrink resistance of the wool and cashmere fabric are enhanced.

Description

Technical Field

[0001] This invention belongs to the field of wool and cashmere fabric technology, specifically relating to a nano-micro molecular wool and cashmere fabric and its preparation method. Background Technology

[0002] Wool and cashmere fibers have long been regarded as high-end textile raw materials due to their excellent softness, warmth, moisture absorption, and comfort, and are widely used in clothing, home textiles and other fields. However, the surface of wool and cashmere fibers has a scaly layer structure, which is prone to entanglement under washing and friction, resulting in fabric shrinkage, pilling and deformation. At the same time, wool and cashmere fibers themselves are easy to absorb moisture, providing conditions for the growth of microorganisms (such as bacteria and fungi), making them prone to odor, mold and even skin allergies during wearing and storage.

[0003] To address the aforementioned issues, existing technologies typically employ chemical finishing methods, such as using resin finishing agents, softeners, and antibacterial agents to treat wool and cashmere fabrics. However, traditional antibacterial finishing methods often involve directly adding antibacterial agents (such as quaternary ammonium salts and silver ions), which suffers from poor antibacterial durability and easy washing off. Furthermore, while conventional finishing agents may improve a particular property (such as antibacterial properties), they often fail to simultaneously enhance other properties (such as abrasion resistance and shrinkage resistance). Therefore, this application provides a nano-molecular wool and cashmere fabric and its preparation method to solve the aforementioned technical problems. Summary of the Invention

[0004] The purpose of this invention is to provide a nano-molecular wool and cashmere fabric and its preparation method in order to solve the above-mentioned problems.

[0005] The present invention achieves the above objectives through the following technical solutions: A method for preparing a nano-molecular wool and cashmere fabric specifically includes the following steps: Step 1: Prepare a rolling agent by mixing 15-20 parts of nano-microcapsules, 2-5 parts of softener, 1-3 parts of nonionic surfactant, 1-4 parts of citric acid, 55-65 parts of ethyl acrylate-methyl methacrylate copolymer aqueous dispersion, and 10-20 parts of chitosan solution. Mix the rolling agent with water to obtain a rolling solution. Use this rolling solution to roll and treat wool and cashmere yarn. After curing treatment, obtain nano-micro-molecule wool and cashmere yarn. The method for obtaining the nano-microcapsules is as follows: after adsorbing eucalyptus oil, lemongrass oil, medium-chain triglycerides, nano zinc oxide, and nano silver with biomass activated carbon, the mixture is then mixed with a nano-microcapsule suspension made of ethyl acrylate-methyl methacrylate copolymer and chitosan and spray-dried. The raw materials for preparing the nano-molecular capsules, by weight, include 1-5 parts of biomass activated carbon, 2-5 parts of eucalyptus essential oil, 2-5 parts of lemongrass essential oil, 8-12 parts of medium-chain triglycerides, 1-3 parts of nano zinc oxide, 1-3 parts of nano silver, 55-65 parts of ethyl acrylate-methyl methacrylate copolymer aqueous dispersion, and 15-25 parts of chitosan solution. Step 2: Use nano-micro molecular wool and cashmere yarn as warp and weft threads to obtain nano-micro molecular wool and cashmere fabric.

[0006] As a further optimization of the present invention, in step one, the method for obtaining the biomass activated carbon is as follows: loofah sponge and coconut shell fiber are mixed at a mass ratio of (1-2):(1-2), heated to 300-450℃ at a heating rate of 8-12℃ / min under a nitrogen atmosphere, and carbonized for 2.5-4.5h; then heated to 500-600℃ at a heating rate of 3-8℃ / min, and carbonized for 2-3h; washed with water until neutral and vacuum dried to obtain the activated carbon.

[0007] As a further optimization of the present invention, in step one, the method for obtaining the nano-molecular capsules is as follows: biomass activated carbon is mixed with eucalyptus essential oil, lemongrass essential oil, medium-chain triglycerides, nano zinc oxide, and nano silver in deionized water at a solid-liquid ratio of 1:20 (w / v). After ultrasonic dispersion, 1-3.5 wt% chitosan solution (chitosan is obtained by dissolving in 1-2% acetic acid solution) is added, and stirring is continued for 10-20 minutes. Then, 25-35% ethyl acrylate-methyl methacrylate copolymer is added. The aqueous dispersion of the substance was adjusted to pH 5.0-5.5 and stirred at 50-60℃ for 2-3 hours to form a nano-microcapsule suspension. The suspension was then centrifuged (3000-4000 r / min, 10 minutes), washed 2-3 times with deionized water, and spray-dried at an inlet temperature of 130-140℃ and an outlet temperature of 70-80℃, with an atomizer speed of 20000-25000 r / min to obtain a powdered microcapsule product. This powder was then sieved through a 100-200 mesh standard sieve to collect the nano-microcapsules.

[0008] As a further optimization of the present invention, the ultrasonic dispersion frequency is 35-50KHz, the power is 200-300W, the time is 10-20min, and the temperature is 28-35℃.

[0009] As a further optimization of the present invention, in step one, 10-20g of rolling agent and 100-150g of wool and cashmere yarn are added to every 1kg of rolling solution. The rolling process involves immersing the material at 30-40°C for 10-20 minutes, resulting in a roll residue rate of 70-85%. The curing process involves pre-baking at 60-70℃ for 5-8 minutes and then baking at 80-90℃ for 2-5 minutes.

[0010] As a further optimization of the present invention, the softener is an amino-modified silicone oil, and the nonionic surfactant is at least one of fatty acid polyoxyethylene ester and fatty alcohol polyoxyethylene ether.

[0011] As a further optimization of the present invention, in step two, the weaving structure of the nano-micro molecular wool and cashmere fabric is a plain weave; the warp weaving density is 60-80 threads / cm, and the weft weaving density is 50-65 threads / cm.

[0012] A nano-molecular wool and cashmere fabric is prepared by any of the preparation methods described above.

[0013] The beneficial effects of this invention are as follows: This invention prepares biomass activated carbon using loofah sponge and coconut shell fiber as biomass raw materials. After adsorbing eucalyptus oil, lemongrass oil, medium-chain triglycerides, nano zinc oxide, and nano silver, it is then coated with ethyl acrylate-methyl methacrylate copolymer and chitosan to prepare nano-microcapsules. The nano-microcapsules are added to a rolling solution system containing ethyl acrylate-methyl methacrylate copolymer aqueous dispersion and chitosan solution. The wool and cashmere yarn obtained after rolling and curing treatment has a long-lasting antibacterial effect. The wool and cashmere fabric woven from the wool and cashmere yarn also has high abrasion resistance and high shrinkage resistance. The loofah sponge and coconut shell fiber of this invention have a certain synergistic effect, which can significantly improve the antibacterial durability, and also improve the abrasion resistance and shrinkage resistance of wool and cashmere fabrics, making them more suitable for various applications. Detailed Implementation

[0014] The present application will now be described in further detail. It should be noted that the following specific embodiments are only used to further illustrate the present application and should not be construed as limiting the scope of protection of the present application. Those skilled in the art can make some non-essential improvements and adjustments to the present application based on the above application content.

[0015] Material 1. Medium-chain triglycerides: purchased from Xi'an Lavia Biotechnology Co., Ltd., purity 99%; 2. Eucalyptus essential oil: Purchased from Taian Jiangzhou Biotechnology Co., Ltd., with a purity of 99%; 3. Lemongrass essential oil: purchased from Wuhan Nengren Pharmaceutical Chemical Co., Ltd., purity 99%; 4. Nano zinc oxide and nano silver: purchased from Yumu (Ningbo) New Materials Co., Ltd., with a purity of 99.9%; 5. Ethyl acrylate-methyl methacrylate copolymer aqueous dispersion: purchased from Wuhan Penglei Biotechnology Co., Ltd., with a solid content of 30%; 6. Chitosan solution: Chitosan (purchased from Xi'an Kangnuo Chemical Co., Ltd., purity 99%) was dissolved in 1-2% (1.8% is preferred in the following experiments) acetic acid solution to obtain the solution; 7. Wool and cashmere yarn: 75% wool, 25% cashmere; 8. Softener: amino-modified silicone oil; nonionic surfactant: at least one of fatty acid polyoxyethylene ester and fatty alcohol polyoxyethylene ether, with fatty acid polyoxyethylene ester used in the following experiments; 9. Commercially available coconut shell activated carbon: purchased from Suzhou Senfida Chemical Co., Ltd., with a purity of 99%, and used after being screened through a 120-mesh sieve; Note: The following experiments in this invention all use preferred parameters; Unless otherwise specified, all methods used in the following examples can be performed using conventional methods. Other materials and reagents used can be obtained commercially unless otherwise specified.

[0016] method Example 1 In this embodiment, a method for preparing a nano-molecular wool and cashmere fabric includes the following specific steps: (1) Preparation of biomass activated carbon In this embodiment, the biomass activated carbon is obtained by mixing loofah sponge and coconut shell fiber at a mass ratio of 1:1, heating to 400°C at a heating rate of 10°C / min under a nitrogen atmosphere, carbonizing for 4 hours, washing with water until neutral, and then vacuum drying.

[0017] (2) Preparation of nano-molecular capsules In this embodiment, the raw materials for preparing the nano-microcapsules, by weight, include 1 part of biomass activated carbon, 5 parts of eucalyptus essential oil, 4 parts of lemongrass essential oil, 12 parts of medium-chain triglycerides, 2 parts of nano zinc oxide, 1 part of nano silver, 60 parts of ethyl acrylate-methyl methacrylate copolymer aqueous dispersion, and 15 parts of chitosan solution. In this embodiment, the method for obtaining nano-microcapsules is as follows: Biomass activated carbon is mixed with eucalyptus oil, lemongrass oil, medium-chain triglycerides, nano zinc oxide, and nano silver in deionized water at a solid-liquid ratio of 1:20 (w / v). After ultrasonic dispersion (frequency 40 kHz, power 230 W, time 12 min, temperature 30 °C), 1.5 wt% chitosan solution is added, and stirring is continued for 15 min. Then, 30% solid content ethyl acrylate-methyl methacrylate copolymer aqueous dispersion is added, the pH is adjusted to 5.3, and the mixture is stirred at 55 °C for 2.5 hours to form a nano-microcapsule suspension. The suspension is then centrifuged (3600 r / min, 10 min), washed 2-3 times with deionized water, and spray-dried at an inlet temperature of 135 °C, an outlet temperature of 75 °C, and an atomizer speed of 22000 r / min to obtain a powdered microcapsule product. This powder is then sieved through a 150-mesh standard sieve to collect the nano-microcapsules.

[0018] (3) Preparation of nano-molecular wool and cashmere yarns and fabrics The raw materials for preparing nano-micro molecular wool and cashmere yarn, by weight, include 15 parts of nano-micro molecular capsules, 5 parts of softener, 1 part of nonionic surfactant, 4 parts of citric acid, 60 parts of ethyl acrylate-methyl methacrylate copolymer aqueous dispersion, and 15 parts of chitosan solution. The tackifier is prepared according to the above ratio. The tackifier is mixed with water to obtain a tackifier solution. Wool and cashmere yarn is tackified using this solution. 16g of tackifier and 120g of wool and cashmere yarn are added to every 1kg of tackifier solution. The yarn is soaked at 35℃ for 15 minutes, resulting in a pick-up rate of 78%. The tack-treated wool and cashmere yarn is then cured by pre-drying at 60℃ for 8 minutes and then drying at 85℃ for 5 minutes. After curing, nano-micro-molecular wool and cashmere yarn is obtained. This nano-micro-molecular wool and cashmere yarn is used as warp and weft yarns to produce a nano-micro-molecular wool and cashmere fabric. The fabric has a plain weave structure with a warp density of 70 threads / cm and a weft density of 55 threads / cm.

[0019] Example 2 In this embodiment, a method for preparing a nano-molecular wool and cashmere fabric includes the following specific steps: (1) Preparation of biomass activated carbon In this embodiment, the biomass activated carbon is obtained by mixing loofah sponge and coconut shell fiber at a mass ratio of 1:1, heating to 400°C at a heating rate of 10°C / min under a nitrogen atmosphere, carbonizing for 4 hours, washing with water until neutral, and then vacuum drying.

[0020] (2) Preparation of nano-molecular capsules In this embodiment, the raw materials for preparing the nano-microcapsules, by weight, include 3 parts of biomass activated carbon, 2 parts of eucalyptus essential oil, 3 parts of lemongrass essential oil, 8 parts of medium-chain triglycerides, 2 parts of nano zinc oxide, 2 parts of nano silver, 60 parts of ethyl acrylate-methyl methacrylate copolymer aqueous dispersion, and 20 parts of chitosan solution. In this embodiment, the method for obtaining nano-microcapsules is as follows: Biomass activated carbon is mixed with eucalyptus oil, lemongrass oil, medium-chain triglycerides, nano zinc oxide, and nano silver in deionized water at a solid-liquid ratio of 1:20 (w / v). After ultrasonic dispersion (frequency 40 kHz, power 230 W, time 12 min, temperature 30 °C), 1.5 wt% chitosan solution is added, and stirring is continued for 15 min. Then, 30% solid content ethyl acrylate-methyl methacrylate copolymer aqueous dispersion is added, the pH is adjusted to 5.3, and the mixture is stirred at 55 °C for 2.5 hours to form a nano-microcapsule suspension. The suspension is then centrifuged (3600 r / min, 10 min), washed 2-3 times with deionized water, and spray-dried at an inlet temperature of 135 °C, an outlet temperature of 75 °C, and an atomizer speed of 22000 r / min to obtain a powdered microcapsule product. This powder is then sieved through a 150-mesh standard sieve to collect the nano-microcapsules.

[0021] (3) Preparation of nano-molecular wool and cashmere yarns and fabrics The raw materials for preparing nano-micro molecular wool and cashmere yarn, by weight, include 15 parts of nano-micro molecular capsules, 5 parts of softener, 1 part of nonionic surfactant, 4 parts of citric acid, 60 parts of ethyl acrylate-methyl methacrylate copolymer aqueous dispersion, and 15 parts of chitosan solution. The tackifier is prepared according to the above ratio. The tackifier is mixed with water to obtain a tackifier solution. Wool and cashmere yarn is tackified using this solution. 16g of tackifier and 120g of wool and cashmere yarn are added to every 1kg of tackifier solution. The yarn is soaked at 35℃ for 15 minutes, resulting in a pick-up rate of 78%. The tack-treated wool and cashmere yarn is then cured by pre-drying at 60℃ for 8 minutes and then drying at 85℃ for 5 minutes. After curing, nano-micro-molecular wool and cashmere yarn is obtained. This nano-micro-molecular wool and cashmere yarn is used as warp and weft yarns to produce a nano-micro-molecular wool and cashmere fabric. The fabric has a plain weave structure with a warp density of 70 threads / cm and a weft density of 55 threads / cm.

[0022] Example 3 In this embodiment, a method for preparing a nano-molecular wool and cashmere fabric includes the following specific steps: (1) Preparation of biomass activated carbon In this embodiment, the biomass activated carbon is obtained by mixing loofah sponge and coconut shell fiber at a mass ratio of 1:1, heating to 400°C at a heating rate of 10°C / min under a nitrogen atmosphere, carbonizing for 4 hours, washing with water until neutral, and then vacuum drying.

[0023] (2) Preparation of nano-molecular capsules In this embodiment, the raw materials for preparing the nano-microcapsules, by weight, include 5 parts of biomass activated carbon, 2 parts of eucalyptus essential oil, 2 parts of lemongrass essential oil, 10 parts of medium-chain triglycerides, 1 part of nano zinc oxide, 3 parts of nano silver, 55 parts of ethyl acrylate-methyl methacrylate copolymer aqueous dispersion, and 22 parts of chitosan solution. In this embodiment, the method for obtaining nano-microcapsules is as follows: Biomass activated carbon is mixed with eucalyptus oil, lemongrass oil, medium-chain triglycerides, nano zinc oxide, and nano silver in deionized water at a solid-liquid ratio of 1:20 (w / v). After ultrasonic dispersion (frequency 40 kHz, power 230 W, time 12 min, temperature 30 °C), 1.5 wt% chitosan solution is added, and stirring is continued for 15 min. Then, 30% solid content ethyl acrylate-methyl methacrylate copolymer aqueous dispersion is added, the pH is adjusted to 5.3, and the mixture is stirred at 55 °C for 2.5 hours to form a nano-microcapsule suspension. The suspension is then centrifuged (3600 r / min, 10 min), washed 2-3 times with deionized water, and spray-dried at an inlet temperature of 135 °C, an outlet temperature of 75 °C, and an atomizer speed of 22000 r / min to obtain a powdered microcapsule product. This powder is then sieved through a 150-mesh standard sieve to collect the nano-microcapsules.

[0024] (3) Preparation of nano-molecular wool and cashmere yarns and fabrics The raw materials for preparing nano-micro molecular wool and cashmere yarn, by weight, include 15 parts of nano-micro molecular capsules, 5 parts of softener, 1 part of nonionic surfactant, 4 parts of citric acid, 60 parts of ethyl acrylate-methyl methacrylate copolymer aqueous dispersion, and 15 parts of chitosan solution. The tackifier is prepared according to the above ratio. The tackifier is mixed with water to obtain a tackifier solution. Wool and cashmere yarn is tackified using this solution. 16g of tackifier and 120g of wool and cashmere yarn are added to every 1kg of tackifier solution. The yarn is soaked at 35℃ for 15 minutes, resulting in a pick-up rate of 78%. The tack-treated wool and cashmere yarn is then cured by pre-drying at 60℃ for 8 minutes and then drying at 85℃ for 5 minutes. After curing, nano-micro-molecular wool and cashmere yarn is obtained. This nano-micro-molecular wool and cashmere yarn is used as warp and weft yarns to produce a nano-micro-molecular wool and cashmere fabric. The fabric has a plain weave structure with a warp density of 70 threads / cm and a weft density of 55 threads / cm.

[0025] Example 4 In this embodiment, a method for preparing a nano-micro molecular wool and cashmere fabric is based on Example 2. The raw materials for preparing nano-micro molecular wool and cashmere yarn in step (3) have been adjusted. After adjustment, the raw materials for preparing nano-micro molecular wool and cashmere yarn, by weight, include 18 parts of nano-micro molecular capsules, 3 parts of softener, 2 parts of nonionic surfactant, 3 parts of citric acid, 60 parts of ethyl acrylate-methyl methacrylate copolymer aqueous dispersion, and 14 parts of chitosan solution. Everything else is consistent with Example 2.

[0026] Example 5 In this embodiment, a method for preparing a nano-molecular wool and cashmere fabric is based on Example 2. The raw materials for preparing nano-molecular wool and cashmere yarn in step (3) have been adjusted. After adjustment, the raw materials for preparing nano-molecular wool and cashmere yarn, by weight, include 20 parts of nano-molecular capsules, 2 parts of softener, 3 parts of nonionic surfactant, 1 part of citric acid, 56 parts of ethyl acrylate-methyl methacrylate copolymer aqueous dispersion, and 18 parts of chitosan solution. Everything else is consistent with Example 2.

[0027] Example 6 In this embodiment, a method for preparing a nano-micro molecular wool and cashmere fabric is based on Example 4, with adjustments made to the method for obtaining biomass activated carbon in step (1). After adjustment, the method for obtaining biomass activated carbon is as follows: loofah sponge and coconut shell fiber are mixed in a mass ratio of 1:1, heated to 400°C at a heating rate of 10°C / min under a nitrogen atmosphere, carbonized for 4 hours, then heated to 550°C at a heating rate of 6°C / min, carbonized for 2.5 hours, washed with water until neutral and vacuum dried to obtain the product. Everything else is the same as in Example 4.

[0028] Comparative Example 1 In this comparative example, a method for preparing a nano-micro molecular wool and cashmere fabric is based on Example 6, with adjustments made to the method for obtaining biomass activated carbon in step (1). After adjustment, the method for obtaining biomass activated carbon is as follows: loofah sponge is heated to 400°C at a heating rate of 10°C / min under a nitrogen atmosphere, carbonized for 4 hours, then heated to 550°C at a heating rate of 6°C / min, carbonized for 2.5 hours, washed with water until neutral, and vacuum dried to obtain the product. Everything else is consistent with Example 6.

[0029] Comparative Example 2 In this comparative example, a method for preparing a nano-micro molecular wool and cashmere fabric is based on Example 6, with adjustments made to the method for obtaining biomass activated carbon in step (1). After adjustment, the method for obtaining biomass activated carbon is as follows: coconut shell fiber is heated to 400°C at a heating rate of 10°C / min under a nitrogen atmosphere, carbonized for 4 hours, then heated to 550°C at a heating rate of 6°C / min, carbonized for 2.5 hours, washed with water until neutral, and vacuum dried to obtain the product. Everything else is consistent with Example 6.

[0030] Comparative Example 3 In this comparative example, a method for preparing a nano-micro molecular wool and cashmere fabric is based on Example 6, in which commercially available coconut shell activated carbon is used to replace the biomass activated carbon obtained in step (1) of this application for the preparation of nano-micro molecular capsules. Everything else is consistent with Example 6.

[0031] Blank Group 1 In this blank group, a method for preparing a nano-micro molecular wool and cashmere fabric is based on Example 6, with steps (1) and (2) omitted and step (3) adjusted. The adjusted step (3) is as follows: the raw materials for preparing nano-micro molecular wool and cashmere yarn, by weight, include 5 parts softener, 1 part nonionic surfactant, 4 parts citric acid, 60 parts ethyl acrylate-methyl methacrylate copolymer aqueous dispersion, and 15 parts chitosan solution. The tackifier is prepared according to the above ratio. The tackifier is mixed with water to obtain a tackifier solution. Wool and cashmere yarn is tackified using this solution. 16g of tackifier and 120g of wool and cashmere yarn are added to every 1kg of tackifier solution. The yarn is soaked at 35℃ for 15 minutes, resulting in a pick-up rate of 78%. The tack-treated wool and cashmere yarn is then cured by pre-drying at 60℃ for 8 minutes and then drying at 85℃ for 5 minutes. After curing, nano-micro-molecular wool and cashmere yarn is obtained. This nano-micro-molecular wool and cashmere yarn is used as warp and weft yarns to produce a nano-micro-molecular wool and cashmere fabric. The fabric has a plain weave structure with a warp density of 70 threads / cm and a weft density of 55 threads / cm. Performance testing (1) Antibacterial performance test Fabric samples washed 50 times: According to the procedures specified in GB / T 8629—2001 Textile Testing - Household Washing and Drying Procedures, the fabric samples of Examples 1-6, Comparative Examples 1-3, and the blank group were subjected to washing tests using a horizontal rotary drum washing machine with a total load of 3.5 kg, a washing temperature of 28°C for 24 min, and 50 washing cycles. After the last washing cycle, the samples were dehydrated for 6 min and dried at 40°C ± 3°C. Antibacterial performance test: Antibacterial performance tests were conducted on the fabric samples of Examples 1-6, Comparative Examples 1-3, and the blank group according to the standard GB / T 20944.2-2007 Evaluation of Antibacterial Properties of Textiles Part 2: Absorption Method. The test bacteria were Staphylococcus aureus (Gram-positive bacteria) and Escherichia coli (Gram-negative bacteria). As per the standard, each fabric sample was cut into 20mm × 20mm pieces. Antibacterial tests were performed on the unwashed fabric samples of Examples 1-6, Comparative Examples 1-3, and the blank group, as well as on fabric samples washed 50 times. The test data are shown in Table 1. Table 1. Data Recording Sheet for Fabric Antibacterial Performance Tests ; Experimental Conclusions: Based on the analysis in Table 1, it can be seen that among Examples 1-6, the fabric sample prepared according to the preparation method of Example 6 has the best antibacterial properties and can still maintain high antibacterial properties after multiple washes. Through comparative analysis, it can be seen that the biomass activated carbon prepared from loofah and coconut shell fiber as biomass raw materials, after adsorbing eucalyptus oil, lemongrass oil, medium-chain triglycerides, nano zinc oxide, and nano silver, is then coated with ethyl acrylate-methyl methacrylate copolymer and chitosan to prepare nano-microcapsules. When these nano-microcapsules are added to a rolling solution system containing ethyl acrylate-methyl methacrylate copolymer aqueous dispersion and chitosan solution, wool and cashmere yarn is rolled and cured to obtain wool and cashmere yarn with a long-lasting antibacterial effect. Among them, there is a certain synergistic effect between loofah and coconut shell fiber, which can significantly improve the antibacterial durability.

[0032] (2) Wear resistance test Abrasion resistance index Ai test: Referring to the standard GB / T21196.2-2007 "Textiles - Determination of Abrasion Resistance of Fabrics by Martindale Method", abrasion resistance tests were conducted on the fabric samples of Examples 1-6, Comparative Examples 1-3, and the blank group under the same experimental conditions; their abrasion resistance index Ai (average mass loss per rub) was measured, and the test results were recorded in Table 2 below: Table 2. Data Recording Sheet for Fabric Abrasion Resistance Tests ; Experimental conclusions: Based on the data analysis in Table 2, it can be seen that the addition of nano-microcapsules to the rolling solution system containing ethyl acrylate-methyl methacrylate copolymer aqueous dispersion and chitosan solution, after solidification, can significantly improve the abrasion resistance of the fabric sample. Furthermore, the biomass activated carbon prepared from loofah and coconut shell fiber as biomass raw materials, after adsorbing nano-zinc oxide and nano-silver, when added to it, enhances the strength of the skeleton support structure, significantly improves abrasion resistance, is not easy to fall off, and has strong durability.

[0033] (3) Shrinkage resistance test Shrinkage test: The fabric samples of Examples 1-6, Comparative Examples 1-3, and the blank group were tested for shrinkage resistance under the same experimental conditions. Each fabric sample was folded in half and sewn with polyester thread, with a cross mark made at each end. The size L0 before shrinkage was recorded. The samples were then washed continuously in a washing machine for 30 hours at a speed of 1200 r / min and a temperature of 32℃, and dried at 45℃±5℃. The size L1 after shrinkage was recorded. The shrinkage rate of the samples was calculated based on L0 and L1 using the formula: [(L0-L1) / L0]×100%. The calculated test results are shown in Table 3. Table 3. Fabric Shrinkage Performance Test Data Recording Table ; Experimental conclusions: Based on the data analysis in Table 3, it can be seen that the addition of nano-microcapsules to the rolling solution system containing ethyl acrylate-methyl methacrylate copolymer aqueous dispersion and chitosan solution, after solidification, can significantly improve the shrinkage resistance of the fabric sample. Furthermore, the biomass activated carbon prepared from loofah and coconut shell fiber as biomass raw materials, after adsorbing nano-zinc oxide and nano-silver, when added to it, enhances the strength of the skeleton support structure, significantly improving the shrinkage resistance of the fabric sample, making it less prone to shrinkage and deformation after washing, with better results.

[0034] The above embodiments merely illustrate several implementation methods of the present invention, and their descriptions are relatively specific and detailed, but they should not be construed as limiting the scope of the present invention. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of the present invention, and these all fall within the protection scope of the present invention.

Claims

1. A method for preparing nanomicro-molecular wool cashmere fabric, characterized in that: Specifically comprising the following steps: Step one: the nano micro molecular capsule 15-20 parts, softener 2-5 parts, non-ionic surfactant 1-3 parts, citric acid 1-4 parts, ethyl acrylate-methyl methacrylate copolymer water dispersion 55-65 parts, chitosan solution 10-20 parts are matched to obtain the dip agent, and the dip solution is obtained after mixing with water, the wool cashmere thread is treated by using the dip solution, and the nano micro molecular wool cashmere thread is obtained after curing treatment; The method for obtaining the nano micro molecular capsule is mixing, spray drying nano microcapsule suspension prepared by using biomass activated carbon, eucalyptus oil, lemon grass oil, medium-chain triglyceride, nano zinc oxide and nano silver, and ethyl acrylate-methyl methacrylate copolymer and chitosan; The preparation raw material of the nano micro molecular capsule comprises, by weight fraction, biomass activated carbon 1-5 parts, eucalyptus oil 2-5 parts, lemon grass oil 2-5 parts, medium-chain triglyceride 8-12 parts, nano zinc oxide 1-3 parts, nano silver 1-3 parts, ethyl acrylate-methyl methacrylate copolymer water dispersion 55-65 parts, and chitosan solution 15-25 parts; Step two: the nano micro molecular wool cashmere fabric is obtained by spinning the nano micro molecular wool cashmere thread as warp and weft.

2. A method of preparing nanomicro-molecular wool and cashmere fabric according to claim 1, characterized in that: In step one, the method for obtaining the biomass activated carbon is mixing loofah sponge and coconut fiber at a mass ratio (1-2):(1-2), heating to 300-450 DEG C at a heating rate of 8-12 DEG C / min under a nitrogen atmosphere, carbonizing for 2.5-4.5 h, then heating to 500-600 DEG C at a heating rate of 3-8 DEG C / min, carbonizing for 2-3 h, washing to neutral and vacuum drying to obtain the biomass activated carbon.

3. The method for preparing a nano-molecular wool and cashmere fabric according to claim 2, characterized in that: In step one, the method for obtaining the nano micro molecular capsule is mixing biomass activated carbon, eucalyptus oil, lemon grass oil, medium-chain triglyceride, nano zinc oxide and nano silver in deionized water, the solid-liquid ratio is 1:20, after ultrasonic dispersion treatment, adding 1-3.5wt% chitosan solution, continuing to stir for 10-20 min, then adding ethyl acrylate-methyl methacrylate copolymer water dispersion with a solid content of 25-35%, adjusting the pH to 5.0-5.5, stirring at 50-60 DEG C for 2-3 h to form nano microcapsule suspension, then centrifuging, washing with deionized water for 2-3 times, spray drying and sieving to collect the nano micro molecular capsule.

4. The method for preparing a nano-molecular wool and cashmere fabric according to claim 3, characterized in that: The frequency of the ultrasonic dispersion is 35-50 KHz, the power is 200-300 W, the time is 10-20 min, and the temperature is 28-35 DEG C.

5. The method as claimed in claim 1, wherein the method of manufacturing nano-micro molecule wool and cashmere fabric is characterized by: In step one, 10-20 g of the dip agent is added to 1 kg of the dip solution, and 100-150 g of the wool cashmere thread is added; The dip treatment is soaking for 10-20 min under the condition of 30-40 DEG C, and the rolling rate is 70-85%; The curing treatment is pre-drying for 5-8 min at 60-70 DEG C, and drying for 2-5 min at 80-90 DEG C.

6. The method for preparing a nano-molecular wool and cashmere fabric according to claim 1, characterized in that: The softener is an amino-modified silicone oil, and the non-ionic surfactant is at least one of a fatty acid polyoxyethylene ester and a fatty alcohol polyoxyethylene ether.

7. The method as claimed in claim 1, wherein the method of manufacturing nano-micro molecule wool and cashmere fabric is characterized by: In step two, the weaving organization of the nanometer micro-molecular wool cashmere fabric is plain weave; the weaving density of the warp is 60-80 roots / cm, and the weaving density of the weft is 50-65 roots / cm.

8. A nanomicro molecular wool and cashmere fabric, characterized in that: The method is prepared by the method of any one of claims 1-7.