Machine-washable real silk wool outdoor fabric and preparation process thereof

Abstract

The invention relates to a machine washable real silk wool outdoor fabric and a preparation process thereof, and the preparation process specifically comprises the following steps: spinning polyester fibers and real silk fibers as raw materials to obtain a surface layer fabric, and carrying out padding treatment on the surface layer fabric by using an adhesive mixture; wherein the adhesive mixture is prepared from the following raw materials in parts by weight: 35 to 50 parts of polyacrylamide, 12 to 18 parts of cladophora protein, 10 to 16 parts of sericin, 20 to 30 parts of sodium alginate, 1 to 3 parts of benzoyl peroxide and 3 to 5 parts of epoxy chloropropane; the superfine wool yarn subjected to cleaning, degreasing and wax removal treatment is subjected to shrink-proof treatment through a wool shrink-proof treatment agent, shrink-proof superfine wool yarn is obtained, and then the bottom layer fabric is obtained through spinning. The pure wool bottom layer fabric is subjected to shrink-proof treatment through the wool shrink-proof finishing agent, so that the wear resistance of the bottom layer fabric is remarkably improved, the surface layer fabric containing real silk fibers is subjected to padding treatment through the adhesive mixture, the wear resistance of the surface layer fabric is improved, the shrink-proof performance of the whole fabric is improved, and the fabric is convenient to wash by a machine.

Description

Technical Field

[0001] This invention belongs to the field of fabric technology, specifically relating to a machine-washable silk and wool outdoor fabric and its preparation process. Background Technology

[0002] Silk and wool fibers, as natural protein fibers, have long been widely used in high-end clothing and home textiles due to their excellent warmth retention, moisture absorption and breathability, and comfortable wearing experience. Silk fibers have a smooth surface and elegant luster, but low strength and poor abrasion resistance; while wool fibers have excellent warmth retention and elasticity, their scaly structure makes them prone to felting shrinkage under moisture, heat, and mechanical action. Traditional silk and wool products usually require hand washing or dry cleaning, and machine washing can easily cause severe shrinkage and deformation, resulting in inconvenience in use and maintenance.

[0003] To improve the performance defects of silk and wool fabrics, existing technologies often employ chemical finishing methods, such as anti-shrinkage treatment for wool (e.g., chlorination / resin method), blending with other fibers, and adhesive treatment for silk, in order to enhance their abrasion resistance and dimensional stability. However, adhesive treatment can easily cause a decrease in the luster of silk fibers.

[0004] In addition, in the context of outdoor clothing applications, fabrics also need to have certain functionalities (such as windproof, waterproof, rainproof, snowproof, breathable and moisture-wicking functions). Traditional single fiber or simple composite processes are difficult to fully meet the usage requirements. A nanofiber membrane can be composited between the inner and outer layers of fabric. Based on this, the present invention provides a machine-washable silk and wool outdoor fabric and its preparation process. Summary of the Invention

[0005] The purpose of this invention is to provide a machine-washable silk and wool outdoor fabric and its preparation process in order to solve the above-mentioned problems.

[0006] The present invention achieves the above objectives through the following technical solutions: A manufacturing process for a machine-washable silk and wool outdoor fabric specifically includes the following steps: Step 1: The surface fabric is obtained by weaving polyester fiber and silk fiber as raw materials, and the surface fabric is impregnated with an adhesive mixture. The raw materials for preparing the adhesive mixture include, by weight, 50-65 parts of polyacrylamide, 12-18 parts of filamentous algae protein, 10-16 parts of sericin, 5-10 parts of sodium alginate, 1-3 parts of benzoyl peroxide, and 3-5 parts of epichlorohydrin. Step 2: After washing, degreasing and dewaxing the superfine wool yarn, use a wool anti-shrinkage treatment agent to treat it to prevent shrinkage and obtain anti-shrinkage superfine wool yarn. Use this anti-shrinkage superfine wool yarn to weave the base fabric. Step 3: Place the bottom layer fabric, the bio-based nanofiber membrane, and the top layer fabric in sequence. After hot pressing and cooling shaping, a machine-washable silk and wool outdoor fabric is obtained.

[0007] Bio-based nanofiber membranes are composited between the bottom and top layers of fabric, achieving certain functions such as windproof, waterproof, rainproof, snowproof, and breathable.

[0008] As a further optimization of the present invention, in step one, the weaving structure of the surface fabric is a plain weave; the weaving density of the warp yarns of the surface fabric is 60-80 yarns / cm, and the weaving density of the weft yarns is 40-65 yarns / cm. The surface fabric has the same warp and weft yarns, and is spun from polyester fiber and silk fiber in a mass ratio of 1-2.5; wherein the polyester fiber has a fineness of 40D-60D and the silk fiber has a fineness of 20D.

[0009] As a further optimization of the present invention, the padding treatment specifically involves adding 4-8 wt% of adhesive mixture to deionized water to prepare an adhesive mixture finishing solution, immersing the surface fabric in the adhesive mixture finishing solution at a mass ratio of 1:12-18, adjusting the pH to 6-8, soaking at 60-70℃ for 1-2 hours, raising the temperature to 100-135℃ at a rate of 2-5℃ / min and soaking for another 3-5 hours, and then drying at room temperature for later use.

[0010] As a further optimization of the present invention, the method for obtaining the Cladophora protein is as follows: take dried Cladophora powder, pass it through an 80-mesh sieve, mix it with water at a material-to-liquid ratio of 1:20 g / mL, adjust the pH to 7-8, extract with ultrasonic assistance, centrifuge, precipitate, freeze dry to obtain powdered Cladophora protein. The ultrasonic assistance extraction power is 100-250W, the frequency is 15-25kHz, the time is 30-40min, and the temperature is 50-65℃.

[0011] As a further optimization of the present invention, the weaving structure of the bottom layer fabric is a plain weave; the weaving density of the warp yarns of the bottom layer fabric is 50-75 yarns / cm, and the weaving density of the weft yarns is 45-60 yarns / cm. The bottom fabric has the same warp and weft yarns, both of which are 90-120 count wool yarn, and the wool is Merino wool with a fineness of 14-16um.

[0012] As a further optimization of the present invention, the shrinkage prevention treatment specifically involves dissolving a wool shrinkage prevention agent in deionized water to obtain a 2-5 wt% shrinkage prevention treatment solution, immersing the bottom fabric in the shrinkage prevention treatment solution at a mass ratio of 1:25-30, adjusting the pH to 6-7, treating at 50-65℃ for 40-60 minutes, and then drying for later use.

[0013] As a further optimization of the present invention, the method for obtaining the bio-based nanofiber membrane is as follows: bio-based TPU is dissolved in N,N-dimethylformamide and stirred evenly to obtain a spinning solution, and then electrospinned to obtain a bio-based nanofiber membrane, wherein the mass percentage of bio-based TPU in the bio-based nanofiber membrane is 15-22 wt%.

[0014] As a further optimization of the present invention, in step three, the hot pressing time is 4-8 min, the pressure is 3-5 MPa, and the temperature is 110-130℃.

[0015] A machine-washable silk and wool outdoor fabric is prepared by the above-mentioned process.

[0016] The beneficial effects of this invention are as follows: This invention uses a wool anti-shrink finishing agent to treat the pure wool base fabric to prevent shrinkage, which significantly improves the abrasion resistance of the base fabric. It also uses an adhesive compound to impregnate the surface fabric containing silk fibers, which improves the abrasion resistance of the surface fabric and enhances the overall fabric's anti-shrink performance, making the fabric easy to machine wash. This invention significantly improves the abrasion resistance and shrinkage resistance of the surface fabric through the synergistic effect of sodium alginate and sericin. Furthermore, the synergistic effect of filamentous algae protein and sodium alginate effectively improves the significant decrease in gloss of the surface fabric caused by the mixed system composed of polyacrylamide, benzoyl peroxide, epichlorohydrin, and sericin. Detailed Implementation

[0017] 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.

[0018] Material 1. Outer Fabric: The outer fabric is woven in a plain weave; the warp density is 60-80 yarns / cm (preferably 70 yarns / cm), and the weft density is 40-65 yarns / cm (preferably 45 yarns / cm). The warp and weft yarns are the same, and the outer fabric is woven from polyester fiber and silk fiber in a mass ratio of 1-2.5.5 (preferably 1:2); wherein the polyester fiber has a fineness of 40D-60D (preferably 45D), and the silk fiber has a fineness of 20D. 2. Bio-based nanofiber membrane: Bio-based TPU (purchased from Shenzhen Wansuyuan Rubber & Plastics Co., Ltd., bio-based content 54%) was dissolved in N,N-dimethylformamide and stirred evenly to obtain a spinning solution. A metal woven mesh with a roughened receiving surface was used as a receiving template. The spinning solution was electrospun onto the receiving template to obtain a bio-based nanofiber membrane (spinning voltage 18kV, receiving distance 25cm, temperature 28℃, relative humidity 52%, metal woven mesh pore size 500μm). The mass percentage of bio-based TPU in the bio-based nanofiber membrane was 15-22wt% (preferably 18wt%). 3. Base Fabric: The weave structure is plain weave; the warp density of the base fabric is 50-75 yarns / cm (preferably 65 yarns / cm), and the weft density is 45-60 yarns / cm (preferably 50 yarns / cm); the warp and weft yarns of the base fabric are the same, both using 90-120 metric count wool yarn (preferably 105 metric count), the wool is Merino wool, and the fineness is 14-16um (preferably 15um). 4. Cladosporium protein: Take dried Cladosporium powder (purchased from Longhai Donghai Bay Seaweed Aquaculture Comprehensive Development Co., Ltd.), pass it through an 80-mesh sieve, mix it with water at a material-to-liquid ratio of 1:20 g / mL, adjust the pH to 7-8 using sodium hydroxide (NaOH), and after ultrasonic-assisted extraction, centrifuge, precipitate, and freeze-dry to obtain powdered Cladosporium protein. The ultrasonic-assisted extraction power is 100-250W, the frequency is 15-25kHz, the time is 30-40min, and the temperature is 50-65℃ (preferably 150W, 18kHz, 35min, and 55℃). 5. Sericin: Purchased from Hubei Guangao Biotechnology Co., Ltd., CAS: 60650-89-7, purity 99%; 6. Wool shrink-proofing agent: PROTOLAN367 (Rotta, Germany) is selected as the wool shrink-proofing agent. 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.

[0019] method Example 1 2.1 Preparation of machine-washable silk and wool outdoor fabrics 2.1.1 The surface fabric (woven from polyester fiber and silk fiber) is subjected to padding treatment using an adhesive mixture. Specifically, the padding treatment involves adding 4 wt% of the adhesive mixture to deionized water to prepare an adhesive mixture finishing solution. The surface fabric is then immersed in the adhesive mixture finishing solution at a mass ratio of 1:12-18 (preferably 1:16). The pH is adjusted to 6-8, and the fabric is immersed at 60-70℃ for 1-2 hours (preferably at pH 7.5, immersed at 65℃ for 1.5 hours). The temperature is then increased to 100-135℃ at a rate of 2-5℃ / min, and the fabric is immersed for another 3-5 hours (preferably at a rate of 3℃ / min, the temperature is increased to 125℃, and the fabric is immersed for another 3.5 hours). After cooling to room temperature, the fabric is dried for later use. The raw materials for preparing the adhesive mixture, by weight, include 40 parts polyacrylamide, 18 parts filamentous algae protein, 16 parts sericin, 20 parts sodium alginate, 2 parts benzoyl peroxide, and 4 parts epichlorohydrin.

[0020] 2.1.2. After washing, degreasing and dewaxing, the superfine wool yarn is treated with a wool anti-shrinkage agent to obtain anti-shrinkage superfine wool yarn. The anti-shrinkage superfine wool yarn is then used to spin the base fabric. Specifically, the anti-shrinkage treatment involves dissolving the wool anti-shrinkage agent in deionized water to obtain a 2-5wt% anti-shrinkage finishing solution (preferably 2wt%). The base fabric is then immersed in the anti-shrinkage finishing solution at a mass ratio of 1:25-30 (preferably 1:28), the pH is adjusted to 6-7, and the fabric is treated at 50-65℃ for 40-60 minutes (preferably the pH is adjusted to 6.5 and the fabric is treated at 55℃ for 45 minutes) and then dried for later use.

[0021] 2.1.3. Place the bottom layer fabric, the bio-based nanofiber membrane, and the top layer fabric in sequence. After hot pressing (hot pressing time is 48 min, pressure is 3-5 MPa, temperature is 110-130℃; preferably hot pressing time is 5 min, pressure is 3 MPa, temperature is 125℃) and cooling and shaping treatment, machine washable silk and wool outdoor fabric A is obtained.

[0022] Example 2 Machine-washable silk and wool outdoor fabric B: Based on the above Example 1, the raw materials for preparing the adhesive mixture in step 2.1.1 are adjusted. After adjustment, the raw materials for preparing the adhesive mixture, by weight, include 42 parts of polyacrylamide, 12 parts of filamentous algae protein, 10 parts of sericin, 30 parts of sodium alginate, 3 parts of benzoyl peroxide, and 3 parts of epichlorohydrin. The rest are consistent with Example 1.

[0023] Example 3 Machine-washable silk and wool outdoor fabric C: Based on the above Example 1, the raw materials for preparing the adhesive mixture in step 2.1.1 are adjusted. After adjustment, the raw materials for preparing the adhesive mixture, by weight, include 40 parts of polyacrylamide, 16 parts of filamentous algae protein, 14 parts of sericin, 24 parts of sodium alginate, 2 parts of benzoyl peroxide, and 4 parts of epichlorohydrin. The rest are consistent with Example 1.

[0024] Example 4 Machine-washable silk and wool outdoor fabric D: Based on the above Example 3, the padding process in step 2.1.1 was adjusted, and the amount of adhesive mixture was adjusted, that is, 6 wt% adhesive mixture was added to deionized water to make adhesive mixture finishing solution, and the rest remained the same as in Example 3.

[0025] Example 5 Machine washable silk and wool outdoor fabric E: Based on the above Example 3, the padding process in step 2.1.1 was adjusted, and the amount of adhesive mixture was adjusted, that is, 8 wt% adhesive mixture was added to deionized water to make adhesive mixture finishing solution, and the rest remained the same as in Example 3.

[0026] Comparative Example 1 Fabric D1: Based on the above Example 4, the raw materials for preparing the adhesive mixture in step 2.1.1 are adjusted. After adjustment, the raw materials for preparing the adhesive mixture, by weight, include 40 parts of polyacrylamide, 30 parts of filamentous algae protein, 24 parts of sodium alginate, 2 parts of benzoyl peroxide, and 4 parts of epichlorohydrin. The rest are consistent with Example 4.

[0027] Comparative Example 2 Fabric D2: Based on the above Example 4, the raw materials for preparing the adhesive mixture in step 2.1.1 are adjusted. After adjustment, the raw materials for preparing the adhesive mixture, by weight, include 40 parts of polyacrylamide, 30 parts of sericin, 24 parts of sodium alginate, 2 parts of benzoyl peroxide, and 4 parts of epichlorohydrin. The rest are consistent with Example 4.

[0028] Comparative Example 3 Fabric D3: Based on the above Example 4, the raw materials for preparing the adhesive mixture in step 2.1.1 were adjusted. After adjustment, the raw materials for preparing the adhesive mixture, by weight, include 40 parts of polyacrylamide, 16 parts of filamentous algae protein, 14 parts of sericin, 24 parts of dopamine, 2 parts of benzoyl peroxide, and 4 parts of epichlorohydrin. The rest are consistent with Example 4.

[0029] Comparative Example 4 Fabric D4: Based on the above Example 4, the raw materials for preparing the adhesive mixture in step 2.1.1 were adjusted. After adjustment, the raw materials for preparing the adhesive mixture, by weight, include 40 parts of polyacrylamide, 16 parts of filamentous algae protein, 14 parts of sericin, 24 parts of polyvinyl alcohol, 2 parts of benzoyl peroxide, and 4 parts of epichlorohydrin. The rest are consistent with Example 4.

[0030] Comparative Example 5 Fabric D5: Based on the above Example 4, the raw materials for preparing the adhesive mixture in step 2.1.1 are adjusted. After adjustment, the raw materials for preparing the adhesive mixture, by weight, include 40 parts of polyacrylamide, 16 parts of filamentous algae protein, 14 parts of sericin, 2 parts of benzoyl peroxide, and 4 parts of epichlorohydrin. The rest are consistent with Example 4.

[0031] Comparative Example 6 Fabric D6: Based on the above Example 4, the raw materials for preparing the adhesive mixture in step 2.1.1 are adjusted. After adjustment, the raw materials for preparing the adhesive mixture, by weight, include 40 parts of polyacrylamide, 14 parts of sericin, 24 parts of sodium alginate, 2 parts of benzoyl peroxide, and 4 parts of epichlorohydrin. The rest are consistent with Example 4.

[0032] Comparative Example 7 Fabric D7: Based on the above Example 4, the raw materials for preparing the adhesive mixture in step 2.1.1 are adjusted. After adjustment, the raw materials for preparing the adhesive mixture, by weight, include 40 parts of polyacrylamide, 16 parts of filamentous algae protein, 24 parts of sodium alginate, 2 parts of benzoyl peroxide, and 4 parts of epichlorohydrin. The rest are consistent with Example 4.

[0033] Blank Group 1 Blank group fabric 1: Based on the above Example 4, the raw materials for preparing the adhesive mixture in step 2.1.1 are adjusted. After adjustment, the raw materials for preparing the adhesive mixture, by weight, include 40 parts of polyacrylamide, 2 parts of benzoyl peroxide, and 4 parts of epichlorohydrin. The rest are consistent with Example 4.

[0034] Blank Group 2 Blank group fabric 2: Based on the above embodiment 4, the impregnation treatment in step 2.1.1 is omitted, and the rest is consistent with embodiment 4.

[0035] Blank Group 3 Blank fabric group 3: Based on the above embodiment 4, the anti-shrinkage treatment in step 2.1.3 is omitted, and the rest is consistent with embodiment 4.

[0036] Performance testing 3.1 Wear resistance test Abrasion resistance index Ai test: Referring to GB / T21196.2-2007 "Textiles - Determination of Abrasion Resistance of Fabrics by Martindale Method", abrasion resistance tests were conducted on the front and back sides (front side for the outer layer fabric; back side for the inner layer fabric) of the fabric samples from Examples 1-5, Comparative Examples 1-7, and Blank Groups 1-3 under the same experimental conditions. The abrasion resistance index Ai (average mass loss per rub) was measured, and the test results were recorded in Table 1 below: Table 1. Data Recording Sheet for Fabric Abrasion Resistance Tests ; Experimental conclusions: Based on the data in Table 1, it can be seen that the mixed system of polyacrylamide, benzoyl peroxide, and epichlorohydrin can improve the abrasion resistance of the surface fabric to a certain extent. Furthermore, by adding sodium alginate and sericin to this system, a highly stable mesh structure can be formed on the fiber surface of the surface fabric through their synergistic effect, thereby further improving the abrasion resistance of the surface fabric. In addition, the abrasion resistance of the bottom fabric is also significantly improved after being treated with the wool shrink-resistant finishing agent PROTOLAN367. This improved abrasion resistance facilitates machine washing of the fabric.

[0037] 3.2 Shrinkage Resistance Test Shrinkage test: The fabric samples of Examples 1-5, Comparative Examples 1-7, and Blank Groups 1-3 were tested for shrinkage resistance under the same experimental conditions. Each fabric sample was folded in half and sewn with polyester thread. A cross mark was made at each end, and the size L0 before shrinkage was recorded. The samples were then washed continuously in a washing machine for 3 hours at a speed of 1200 r / min and a temperature of 32℃, and dried at 50℃. 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 2. Table 2. Fabric Shrinkage Performance Test Data Recording Table ; Experimental Conclusions: Based on the data analysis in Table 2, it can be seen that the abrasion resistance of the bottom layer fabric is significantly improved after being treated with the wool shrink-resistant finishing agent PROTOLAN367. The mixed system composed of polyacrylamide, benzoyl peroxide, and epichlorohydrin can improve the shrink-resistant performance of the top layer fabric to a certain extent. Furthermore, by adding sodium alginate and sericin to this mixed system, the shrink-resistant performance of the top layer fabric can be significantly improved. This indicates that the synergistic effect of sodium alginate and sericin is better, and the improved shrink-resistant performance makes the fabric more suitable for machine washing.

[0038] 3.3 Gloss performance test Glossiness Test: According to the textile industry standard FZ / T 01097-2006 "Test Method for Fabric Gloss", the glossiness of the fabric samples (surface fabric) of Examples 1-5, Comparative Examples 1-7, and Blank Groups 1-3 were tested under the same experimental conditions. The experimental instrument was an M524 fabric glossiness tester manufactured by Qingdao Shanfang Instrument Co., Ltd. The glossiness was calculated based on the test results using the following formula: ; Among them, G C G represents the fabric's luster. S The positive reflective gloss of the fabric, %; G R The difference between the gloss of the fabric's reflected light and the gloss of its diffused light, %; test data are shown in Table 3: Table 3. Data Recording Sheet for Fabric Gloss Performance Tests ; Experimental Conclusion: While padding the surface fabric with a mixture of polyacrylamide, benzoyl peroxide, epichlorohydrin, and sericin can improve its abrasion resistance and shrinkage resistance, it also significantly reduces the fabric's gloss. However, adding filamentous algae protein and sodium alginate to this mixture restores the fabric's gloss to a level comparable to that without the adhesive mixture. This indicates that the synergistic effect of filamentous algae protein and sodium alginate can effectively improve the significant decrease in gloss caused by the mixture of polyacrylamide, benzoyl peroxide, epichlorohydrin, and sericin. Furthermore, the padding treatment also imparts certain antibacterial and deodorizing properties to the surface fabric.

[0039] 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 manufacturing process for machine-washable silk and wool outdoor fabric, characterized in that: Specifically, the following steps are included: Step 1: The surface fabric is obtained by weaving polyester fiber and silk fiber as raw materials, and the surface fabric is impregnated with an adhesive mixture. The raw materials for preparing the adhesive mixture include, by weight, 35-50 parts of polyacrylamide, 12-18 parts of filamentous algae protein, 10-16 parts of sericin, 20-30 parts of sodium alginate, 1-3 parts of benzoyl peroxide, and 3-5 parts of epichlorohydrin. Step 2: After washing, degreasing and dewaxing the superfine wool yarn, use a wool anti-shrinkage treatment agent to treat it to prevent shrinkage and obtain anti-shrinkage superfine wool yarn. Use this anti-shrinkage superfine wool yarn to weave the base fabric. Step 3: Place the bottom layer fabric, the bio-based nanofiber membrane, and the top layer fabric in sequence. After hot pressing and cooling shaping, a machine-washable silk and wool outdoor fabric is obtained.

2. The preparation process of a machine-washable silk and wool outdoor fabric according to claim 1, characterized in that: In step one, the surface fabric is woven in a plain weave; the warp density of the surface fabric is 60-80 yarns / cm, and the weft density is 40-65 yarns / cm. The surface fabric has the same warp and weft yarns, and is spun from polyester fiber and silk fiber in a mass ratio of 1-2.5; wherein the polyester fiber has a fineness of 40D-60D and the silk fiber has a fineness of 20D.

3. The preparation process of a machine-washable silk and wool outdoor fabric according to claim 2, characterized in that: The padding process specifically involves adding 4-8 wt% adhesive mixture to deionized water to prepare an adhesive mixture finishing solution. The surface fabric is then immersed in the adhesive mixture finishing solution at a mass ratio of 1:12-18. The pH is adjusted to 6-8, and the fabric is immersed at 60-70℃ for 1-2 hours. The temperature is then increased to 100-135℃ at a rate of 2-5℃ / min, and the fabric is immersed for another 3-5 hours. After cooling to room temperature, the fabric is dried for later use.

4. The preparation process of a machine-washable silk and wool outdoor fabric according to claim 3, characterized in that: The method for obtaining the Cladophora protein is as follows: take dried Cladophora powder, pass it through an 80-mesh sieve, mix it with water at a material-to-liquid ratio of 1:20 g / mL, adjust the pH to 7-8, extract with ultrasonic assistance, centrifuge, precipitate, freeze dry to obtain powdered Cladophora protein. The ultrasonic assistance extraction power is 100-250W, the frequency is 15-25kHz, the time is 30-40min, and the temperature is 50-65℃.

5. The preparation process of a machine-washable silk and wool outdoor fabric according to claim 1, characterized in that: The bottom layer fabric is woven in a plain weave; the warp density of the bottom layer fabric is 50-75 yarns / cm, and the weft density is 45-60 yarns / cm. The bottom fabric has the same warp and weft yarns, both of which are 90-120 count wool yarn, and the wool is Merino wool with a fineness of 14-16um.

6. The preparation process of a machine-washable silk and wool outdoor fabric according to claim 5, characterized in that: The shrinkage prevention treatment specifically involves dissolving a wool shrinkage prevention agent in deionized water to obtain a 2-5 wt% shrinkage prevention treatment solution. The bottom fabric is then immersed in the shrinkage prevention treatment solution at a mass ratio of 1:25-30, the pH is adjusted to 6-7, and the fabric is treated at 50-65℃ for 40-60 minutes before drying for later use.

7. The preparation process of a machine-washable silk and wool outdoor fabric according to claim 1, characterized in that: The method for obtaining the bio-based nanofiber membrane is as follows: bio-based TPU is dissolved in N,N-dimethylformamide and stirred evenly to obtain a spinning solution, and then electrospinned to obtain a bio-based nanofiber membrane. The bio-based TPU in the bio-based nanofiber membrane is 15-22 wt%.

8. The preparation process of a machine-washable silk and wool outdoor fabric according to claim 1, characterized in that: In step three, the hot pressing time is 4-8 minutes, the pressure is 3-5 MPa, and the temperature is 110-130℃.

9. A machine-washable silk and wool outdoor fabric, characterized in that: It is prepared by any of the preparation processes described in 1-8 above.