CN105350299A - Automatic temperature adjustment breathable type outdoor sportswear fabric and preparation method - Google Patents

Abstract

An automatic temperature-regulating breathable outdoor sportswear fabric and a preparation method thereof. Warp yarns and weft yarns are interwoven into preforms, and the preforms are impregnated to obtain fabrics; wherein, the warp yarns are made of 20-30 parts of modified nylon fibers, modified It consists of 45-50 parts of viscose fiber and 20-35 parts of modified polyacrylonitrile fiber; the weft yarn consists of 50-60 parts of modified polyester fiber and 40-50 parts of milk fiber. The invention synthesizes the prepared warp yarn and weft yarn into a preform, places the preform in a suspending emulsion, immerses the preform under ultrasonic waves for 10-14 hours, takes it out and dries, and obtains the sportswear fabric. The prepared sportswear fabric has automatic temperature regulation, high air permeability and sweat absorption, which makes it more comfortable, safe and healthy during exercise.

Description

A kind of automatic temperature-regulating breathable outdoor sportswear fabric and its preparation method

technical field

The invention relates to the field of sportswear, in particular to an automatic temperature-regulating breathable outdoor sportswear fabric and a preparation method thereof.

Background technique

Clothing, food, housing, and transportation are the basic needs of people's lives. With the advancement of science and technology, people's living standards are gradually improving, and people's needs are also constantly improving. At present, outdoor sports have become an important sport for people after work. Since the human body produces heat and sweat during exercise, and ordinary sportswear is airtight and does not absorb sweat, people will feel very uncomfortable during exercise and reduce the enjoyment of exercise. Therefore, it is necessary to develop a high-breathability 1. Intelligent temperature-adjusting sports textiles provide people with a kind of heat release when cold and heat absorption when hot, eliminating the feeling of cold and heat caused by temperature changes during exercise, and improving people's enjoyment of exercise.

Now, with the vigorous development of the sports industry, temperature-regulating textiles have become a research hotspot of textile functional products at home and abroad. In China, the research and application of temperature-regulating fibers are still in their infancy, and there are no fully mature products in the market. However, because the temperature-regulating fiber has heat storage and temperature-regulating functions, and has excellent blending properties with other various fibers, its application range is extremely wide, so it will definitely have a broad market development space.

Contents of the invention

The purpose of the present invention is to overcome the deficiencies of the prior art, and provide an automatic temperature-regulating breathable outdoor sportswear fabric and a preparation method thereof.

The technical solution adopted by the present invention in order to solve the above problems is: an automatic temperature-regulating breathable outdoor sportswear fabric, which is interwoven with warp yarns and weft yarns into a prefabricated body, and the prefabricated body is impregnated to obtain a fabric; wherein the warp yarn is made of the following weight: Raw material composition of components: 20-30 parts of modified nylon fiber, 45-50 parts of modified viscose fiber and 20-35 parts of modified polyacrylonitrile fiber; the weft yarn is composed of raw materials with the following weight components: modified polyester fiber 50-60 servings and 40-50 servings of milk fiber.

In the present invention, the modified nylon fiber is polyethylene glycol grafted polyamide 6, wherein the molecular weight of polyethylene glycol is 4000-6000.

In the present invention, the modified viscose fiber is composed of the following raw materials by weight: 90-95 parts of viscose spinning solution, and 5-10 parts of microcapsule compound phase change material.

The modified polyester fiber in the present invention is polyethylene glycol grafted polyethylene terephthalate, wherein the molecular weight of polyethylene glycol is 1000-2000.

A method for preparing an automatic temperature-regulating breathable outdoor sportswear fabric, comprising the following steps:

Step 1. Prepare n-tetradecane, n-hexadecane, and n-eicosane with a weight ratio of 2:4:1 to form a mixed solution, place the mixed solution in a three-necked bottle and heat it in a water bath, and the temperature of the water bath is 70-80°C , after stirring at a speed of 1000-1300rpm for 10-15min, according to the weight ratio of mixed solution: emulsifier: PVA aqueous solution = 10:0.2:0.5-1.0, add emulsifier and PVA aqueous solution, and stir at a speed of 450-600rpm for 1- 1.5h to form an emulsion, then add dilute sulfuric acid with a concentration of 10%, adjust the pH of the emulsion to 4-5, and set aside;

Step 2: Put melamine and formaldehyde with a molar ratio of 1:4.5-5 in a container to form a solution, and stir in a sealed container at 75-80°C for 0.5h, then add a diluted solution of Na ₂ CO ₃ with a concentration of 10-15%, and adjust The pH of the solution is 9-10, and stirred at 45-50°C until the solution is clear and transparent; then according to the volume ratio of the solution:emulsion=3:5, add the solution to the emulsion prepared in step 1, stir for 2.5-3h, and form a suspension Separate the suspension with a centrifuge at a speed of 2500-3000rpm, wash the precipitate obtained by centrifugation with ethylene glycol and deionized water for 3-5 times, and then dry it in an oven at 40-50°C for 10- 12h, the microcapsule composite phase change material was prepared and set aside;

Step 3, according to the parts by weight of 90-95 parts of viscose spinning solution and 5-10 parts of microcapsule compound phase change material, weigh the viscose spinning solution and the microcapsule compound phase change material prepared in step 2 , mixed and extruded through a spinneret to obtain a modified viscose fiber for subsequent use;

Step 4, according to the parts by weight of 70-80 parts of UV-curable acrylate adhesive and 5-7 parts of microcapsule composite phase-change material, weigh the UV-curable acrylate adhesive and the microcapsule prepared in step 2. Capsules are compounded with phase change materials, mixed to obtain a composite adhesive, coated on the polyacrylonitrile fiber by the composite adhesive, and irradiated with ultraviolet light to obtain a modified polyacrylonitrile fiber, which is ready for use;

Step 5. Put the polyester fiber into the plasma treatment apparatus, vacuumize and treat it with oxygen for 0.5-1.5h, and then directly immerse the treated polyester fiber in a solution with a mass fraction of 20-35% polyethylene glycol. Soak at a temperature of 25-30°C for 6-7h, take it out and dry it, and then treat it with Ar plasma, the treatment time is 1-2.5min, the power is 100-200W, and the pressure is 50-60Pa. After treatment, it is ultrasonically cleaned with distilled water for 6 -8min, after drying, the modified polyester fiber is obtained, which is for subsequent use;

Step six, polyamide 6 and polyethylene glycol are placed in formic acid with a mass fraction of 98% according to the mass ratio of 50-90:10-50, and stirred at a temperature of 30-40°C for 1.5-2h to form a mass fraction It is 14-17% uniform spinning solution, which is spun by an electrospinning machine. The flow rate of the spinning solution is 0.2-0.4ml/h, and the nozzle diameter is 1-1.2mm, so as to obtain modified nylon fiber and set aside;

Step 7, according to the parts by weight of 20-30 parts of modified nylon fiber, 45-50 parts of modified viscose fiber and 20-35 parts of modified polyacrylonitrile fiber, the modified nylon fiber obtained in step 6 , the modified viscose fiber that step 3 makes, the modified polyacrylonitrile fiber synthetic light yarn that step 4 makes; According to the parts by weight of 50-60 parts of modified polyester fiber and 40-50 parts of milk fiber, milk The fiber and the modified polyester fiber prepared in step 5 synthesize the weft yarn; finally, the warp yarn and the weft yarn are synthesized into a prefabricated body for subsequent use;

Step 8, according to the following weight components, weigh each material and mix: 2-5 parts of chitosan, 2-3 parts of glycerol, 60-75 parts of ethanol, 2-2.5 parts of vegetable wax, 1-5 parts of negative ion powder part to prepare a suspoemulsion, place the prefabricated body prepared in step 7 in the suspoemulsion, immerse it under ultrasonic waves for 10-14 hours, take it out and dry it, and obtain a sportswear fabric.

Polyamide 6 has excellent properties such as high strength, good resilience, fatigue resistance, dyeability, corrosion resistance, and insect resistance. Its density is lower than most fiber varieties, and its wear resistance is better than other synthetic fibers. It is suitable for outdoor use In sportswear; polyethylene glycol can obtain a certain phase change enthalpy from amorphous to crystallization at room temperature, and absorb, store, and release it in the form of latent heat, and can be used as a phase change temperature adjustment and energy storage material.

In the present invention, polyethylene glycol is used as the phase change material, polyamide 6 (PA6) is used as the polymer carrier, and the temperature-regulating material polyethylene glycol is introduced into the polymer carrier PA6 through a blending electrospinning method to prepare the phase change material. Change nano temperature regulating fiber. In the experiment, it was found that the fibers spun out of the blended spinning of polyethylene glycol and PA6 did not appear separated phases, and the compatibility between the two was good, and there was a hydrogen bond between the PA6 macromolecule and polyethylene glycol, and with the polyethylene glycol The viscosity of the spinning solution is improved to a certain extent, which is beneficial to obtain fibers with regular shape and uniform distribution, and the diameter of nanofibers is increased to a certain extent. When the blending ratio of PA6 and polyethylene glycol is 1 Timing, PA6/polyethylene glycol blended nanofibers with regular morphology, no beads, and no adhesion between fibers can be obtained. The average diameter of the fibers is (100±12) nm; With the increase of alcohol blending ratio, the melting temperature and melting enthalpy of phase change nanofibers gradually increase, which is due to the energy stored in its solid-liquid phase transition with the increase of polyethylene glycol content in phase change nanofibers. It also increases gradually, and the melting temperature and enthalpy of phase change nanofibers with different blending ratios are lower than that of polyethylene glycol, which is due to the higher melting temperature of polymer material PA6, and its The shape of the solid state does not change in the temperature range and does not provide enthalpy; secondly, the formation of hydrogen bonding between PA6 and polyethylene glycol and the three-dimensional fiber network structure of phase-change nanofibers also affect the phase-change material polyethylene glycol. Alcohol has an inhibitory effect on the phase transition, resulting in the melting temperature and enthalpy of the phase change fiber being lower than that of the phase change material.

Viscose fiber has high strength and fatigue resistance, and has hygroscopicity, which can absorb sweat produced during exercise; add microcapsule compound phase change materials into viscose spinning solution, and extrude through the spinneret, The prepared modified viscose fiber containing the microcapsule compound phase change material not only has high strength, fatigue resistance and hygroscopicity, but also has self-regulating temperature performance, low price and cost, and is environmentally friendly.

Polyacrylonitrile fiber has the characteristics of softness, bulkiness, easy dyeing, bright color, light resistance, antibacterial, good elasticity and good air permeability. The microcapsule compound phase change material is bonded to the On the polyacrylonitrile fiber, the polyacrylonitrile fiber has the function of self-temperature adjustment on the basis of its own excellent performance. The UV-curable acrylate adhesive used is a photo-curable adhesive when the curing light source is ultraviolet light. The main component is acrylate, which can change the molecular chain structure and relative molecular weight of the adhesive. Hardness, flexibility, adhesion, medium resistance, durability and curing speed, and good strength after curing, high transparency: low curing temperature, can be cured at room temperature.

The recovery ability of polyester fiber to elongation, compression, bending and other deformations is close to that of wool. When applied to polyester fiber, active free radicals can be generated on the surface of the fiber, forming hydrophilic, improving the moisture absorption performance of the fiber, making it a sportswear material, which can absorb sweat generated during exercise.

Milk fiber has good abrasion resistance, anti-pilling, coloring, softness, skin-friendly, air permeability, moisture permeability, and has a maintenance effect on the skin; because it does not use formaldehyde azo additives or raw materials , fiber formaldehyde content is zero; rich in 18 kinds of amino acids that are beneficial to the human body, can promote the metabolism of human cells, prevent skin aging, itching, and nourish the skin; it has natural moisturizing factors, so it can maintain the moisture content of the skin and make the skin soft and smooth , reduce wrinkles, has broad-spectrum antibacterial function, strong persistence, natural antibacterial function of more than 99%, and antibacterial rate of more than 80%.

Beneficial effects: (1). The core body of the microcapsule composite phase change material used in the present invention is composed of n-tetradecane, n-hexadecane, and n-eicosane. When n-tetradecane, n-decane When hexane and n-eicosane are compounded according to the mass ratio of 2:4:1, the capsule wall material should use melamine/formaldehyde resin with excellent mechanical strength and heat resistance, and the prepared microcapsule compound phase change material When cooling down, the temperature change speed is small, the phase change time is long, the phase change temperature range basically coincides with the comfortable temperature range of the human body, and the heat resistance is good.

(2) In the present invention, polyethylene glycol is used to modify polyamide 6, so that polyamide 6 has a self-adjusting temperature function on the basis of its own excellent performance, and can improve polyamide 6 under the premise of satisfying the application. The flexibility of amide 6 fiber makes it more comfortable; use low-temperature plasma to treat polyester fiber, graft polyethylene glycol to polyester fiber, and obtain modified polyester fiber, which not only has the excellent performance of polyester fiber itself, but also improves It improves its own moisture absorption performance, which is conducive to the absorption of sweat during exercise.

(3) Through the modification and blending of the above several fibers, the final fabric can give full play to the excellent properties of various fibers to make up for the shortcomings, so that the prepared sportswear fabric has automatic temperature regulation, high air permeability and sweat absorption. Make the exercise process more comfortable, safe and healthy.

(4) Immersing the prepared preform in the suspending emulsion can make the surface of the prepared fabric have a dense anti-oxidation layer and improve the weather resistance of the fabric; ultrasonic treatment makes the active ingredients of the suspending emulsion evenly dispersed in the It is not easy to lose in the fiber of the fabric; chitosan and negative ion powder have certain antibacterial effect, so that the prepared fabric can prevent the erosion of human sweat while avoiding the growth of mold itself, decompose the molecular structure of odor, and avoid exercise Sweat stains and dirt odor from time to time; Vegetable wax is used as the protective layer of the fabric, which does not hinder the breathability of the fabric and improves the toughness of the fabric.

detailed description

An automatic temperature-regulating breathable outdoor sportswear fabric, which is interwoven with warp yarns and weft yarns to form a prefabricated body, and the prefabricated body is impregnated to obtain a fabric; wherein, the warp yarns are composed of raw materials with the following weight components: modified nylon fiber 20-30 45-50 parts of modified viscose fiber and 20-35 parts of modified polyacrylonitrile fiber; the weft yarn is composed of the following raw materials by weight: 50-60 parts of modified polyester fiber and 40-50 parts of milk fiber.

Example 1

A method for preparing an automatic temperature-regulating breathable outdoor sportswear fabric, comprising the following steps: step 1, preparing n-tetradecane, n-hexadecane, and n-eicosane in a weight ratio of 2:4:1 into a mixed solution , put the mixed solution in a three-necked flask and heat it in a water bath. The temperature of the water bath is 70°C. After stirring for 15 minutes at a speed of 1300rpm, add the emulsifier and PVA according to the weight ratio of the mixed solution: emulsifier: PVA aqueous solution = 10:0.2:1.0 The aqueous solution was stirred at a speed of 450rpm for 1.5h to form an emulsion, and then dilute sulfuric acid with a concentration of 10% was added to adjust the pH of the emulsion to 5 and set aside;

Step 2. Put melamine and formaldehyde with a molar ratio of 1:5 in a round-bottomed flask to form a solution. Stir at 80°C for 0.5h, then add 15% Na ₂ CO ₃ dilute solution to adjust the pH of the solution Stir to 10, 50°C until the solution is clear and transparent; then according to the volume ratio of the solution:emulsion = 3:5, add the solution to the emulsion prepared in step 1, stir for 3 hours to form a suspension, and use a centrifuge to process the suspension Separation, the centrifugation speed is 3000rpm, the precipitate obtained by centrifugation is washed 5 times with ethylene glycol and deionized water respectively, and then placed in an oven at 40°C for 12 hours to prepare a microcapsule compound phase change material for future use;

Step 3, according to the parts by weight of 95 parts of viscose spinning solution and 5 parts of microcapsule composite phase change material, take viscose spinning solution and the microcapsule composite phase change material prepared in step 2, mix and pass Spinneret is extruded, and modified viscose fiber is obtained, for subsequent use;

Step 4, according to the parts by weight of 80 parts of UV curable acrylate adhesive and 5 parts of microcapsule composite phase change material, weigh the UV curable acrylate adhesive and the microcapsule composite phase prepared in step 2 Change the material, mix to obtain a composite adhesive, apply the composite adhesive on the polyacrylonitrile fiber, and irradiate with ultraviolet light to obtain a modified polyacrylonitrile fiber, which is ready for use;

Step 5. Put the polyester fiber into the plasma treatment apparatus, vacuumize and treat it with oxygen for 1.5h, then directly immerse the treated polyester fiber in a solution with a mass fraction of 35% polyethylene glycol, at a temperature of 25°C Soak it down for 7 hours, take it out and dry it, then treat it with Ar plasma, the treatment time is 2.5min, the power is 200W, and the pressure is 50Pa. After the treatment, it is ultrasonically cleaned with distilled water for 8min, and after drying, the modified polyester fiber is prepared for future use;

Step 6. Put polyamide 6 and polyethylene glycol in formic acid with a mass fraction of 98% according to a mass ratio of 90:10, and stir at a temperature of 30°C for 2 hours to form a uniform spinning solution with a mass fraction of 17%. , spinning by an electrospinning machine, the flow rate of the spinning solution is 0.4ml/h, and the diameter of the nozzle is 1.2mm to obtain modified nylon fibers, which are ready for use;

Step 7, according to the parts by weight of 30 parts of modified nylon fibers, 50 parts of modified viscose fibers and 20 parts of modified polyacrylonitrile fibers, the modified nylon fibers obtained in step 6, the obtained The modified polyacrylonitrile fiber synthetic light yarn that modified viscose fiber, step 4 make; The fiber is synthesized into weft yarn; finally, the warp yarn and weft yarn are synthesized into a prefabricated body for standby;

Step 8, according to the following weight components, take each material and mix: 2 parts of chitosan, 3 parts of glycerol, 75 parts of ethanol, 2 parts of vegetable wax, 5 parts of negative ion powder, obtain suspoemulsion, and step 7 The prepared preform is placed in the suspoemulsion, soaked for 10-14 hours under ultrasonic waves, and then taken out and dried to obtain the sportswear fabric.

The molecular weight of polyethylene glycol (PEG) is much smaller than that of the high polymer PA6, and the molecular structure is simple. Therefore, with the increase of the PEG blending ratio, the flexibility of the molecular chains constituting PA6/PEG nanofibers is better than that of pure PA6 nanofibers. The increased flexibility of the material leads to an improved elongation at break of the blended nanofibers. Therefore, the phase change nanofiber prepared by introducing PEG into PA6 not only has the excellent properties of PA6 fiber, such as high strength, good resilience, fatigue resistance, dyeability, corrosion resistance, insect resistance, and light weight, but also has the advantages of PEG. Absorption, storage, and release of potential heat energy, etc., although PEG is added to PA6 fiber to reduce the breaking strength of the fiber, it still meets the mechanical requirements of clothing, and at the same time improves the flexibility of PA6 fiber and makes it more comfortable. Therefore, introducing PEG into PA6 fiber is a good choice for clothing Preferred self-regulating material.

Example 2

A method for preparing an automatic temperature-regulating breathable outdoor sportswear fabric, comprising the following steps: step 1, preparing n-tetradecane, n-hexadecane, and n-eicosane in a weight ratio of 2:4:1 into a mixed solution , put the mixed solution in a three-necked bottle and heat it in a water bath. The temperature of the water bath is 80 ° C. After stirring for 10 minutes at a speed of 1000 rpm, add the emulsifier and PVA according to the weight ratio of the mixed solution: emulsifier: PVA aqueous solution = 10: 0.2: 0.5 The aqueous solution was stirred at a speed of 600rpm for 1 hour to form an emulsion, and then 10% dilute sulfuric acid was added to adjust the pH of the emulsion to 4, and set aside;

Step 2: Put melamine and formaldehyde with a molar ratio of 1:4.5 in a round-bottomed flask to form a solution, and stir at 75°C for 0.5h, then add a 10% Na ₂ CO ₃ dilute solution to adjust the pH of the solution Stir to 9, 45°C until the solution is clear and transparent; then add the solution to the emulsion prepared in step 1 according to the volume ratio of the solution:emulsion = 3:5, stir for 2.5 hours to form a suspension, and use a centrifuge to dissolve the suspension Separation was carried out at a centrifugation speed of 2500 rpm, and the precipitate obtained by centrifugation was washed three times with ethylene glycol and deionized water respectively, and then dried in an oven at 50°C for 10 hours to obtain a microcapsule compound phase change material for future use;

Step 3, according to the parts by weight of 90 parts of viscose spinning solution and 10 parts of microcapsule composite phase change material, take viscose spinning solution and the microcapsule composite phase change material prepared in step 2, mix and pass Spinneret is extruded, and modified viscose fiber is obtained, for subsequent use;

Step 4, according to the parts by weight of 70 parts of UV curable acrylate adhesive and 7 parts of microcapsule composite phase change material, weigh the UV curable acrylate adhesive and the microcapsule composite phase prepared in step 2 Change the material, mix to obtain a composite adhesive, apply the composite adhesive on the polyacrylonitrile fiber, and irradiate with ultraviolet light to obtain a modified polyacrylonitrile fiber, which is ready for use;

Step 5. Put the polyester fiber into the plasma treatment apparatus, vacuumize it and treat it with oxygen for 0.5h, then directly immerse the treated polyester fiber in a solution with a mass fraction of 20% polyethylene glycol, at a temperature of 25°C Soak it down for 7 hours, take it out and dry it, then treat it with Ar plasma, the treatment time is 1min, the power is 100W, and the pressure is 50Pa. After the treatment, it is ultrasonically cleaned with distilled water for 6min, and after drying, the modified polyester fiber is prepared for future use;

Step 6. Put polyamide 6 and polyethylene glycol in formic acid with a mass fraction of 98% according to a mass ratio of 50:50, and stir at a temperature of 30°C for 1.5 hours to form a uniform spinning with a mass fraction of 14%. Liquid, spinning by electrospinning machine, spinning liquid flow rate is 0.2ml/h, nozzle aperture is 1mm, obtains modified nylon fiber, standby;

Step 7, according to the parts by weight of 20 parts of the modified nylon fiber, 45 parts of the modified viscose fiber and 35 parts of the modified polyacrylonitrile fiber, the modified nylon fiber made in the step 6, the made in the step 3 The modified polyacrylonitrile fiber synthetic light yarn that modified viscose fiber, step 4 makes; The fiber is synthesized into weft yarn; finally, the warp yarn and weft yarn are synthesized into a prefabricated body for standby;

Step 8, according to the following weight components, take each material and mix: 2 parts of chitosan, 2 parts of glycerin, 60 parts of ethanol, 2 parts of vegetable wax, 1 part of negative ion powder, make suspoemulsion, and step 7 The prepared preform is placed in the suspoemulsion, soaked for 10 hours under ultrasonic waves, and then taken out and dried to obtain a sportswear fabric.

Example 3

A method for preparing an automatic temperature-regulating breathable outdoor sportswear fabric, comprising the following steps: step 1, preparing n-tetradecane, n-hexadecane, and n-eicosane in a weight ratio of 2:4:1 into a mixed solution , put the mixed solution in a three-necked flask and heat it in a water bath, the temperature of the water bath is 76°C, and after stirring for 12 minutes at a speed of 1100rpm, add the emulsifier and PVA according to the weight ratio of the mixed solution: emulsifier: PVA aqueous solution = 10:0.2:0.7 The aqueous solution was stirred at a speed of 550rpm for 1.3h to form an emulsion, and then dilute sulfuric acid with a concentration of 10% was added to adjust the pH of the emulsion to 4, and set aside;

Step 2: Put melamine and formaldehyde with a molar ratio of 1:4.6 in a round-bottomed flask to form a solution, and stir at 77°C for 0.5h, then add a 13% Na ₂ CO ₃ dilute solution to adjust the pH of the solution Stir to 9, 47°C until the solution is clear and transparent; then add the solution to the emulsion prepared in step 1 according to the volume ratio of the solution:emulsion = 3:5, stir for 2.6 hours to form a suspension, and use a centrifuge to dissolve the suspension Separation was carried out at a centrifugation speed of 2800rpm, and the precipitate obtained by centrifugation was washed 4 times with ethylene glycol and deionized water respectively, and then placed in an oven at 45°C for 11.5 hours to obtain a microcapsule compound phase change material for future use;

Step 3, according to the parts by weight of 92 parts of viscose spinning solution and 9 parts of microcapsule composite phase change material, take viscose spinning solution and the microcapsule composite phase change material prepared in step 2, mix and pass through Spinneret is extruded, and modified viscose fiber is obtained, for subsequent use;

Step 4, according to the parts by weight of 75 parts of UV curable acrylate adhesive and 6 parts of microcapsule composite phase change material, weigh the UV curable acrylate adhesive and the microcapsule composite phase prepared in step 2 Change the material, mix to obtain a composite adhesive, apply the composite adhesive on the polyacrylonitrile fiber, and irradiate with ultraviolet light to obtain a modified polyacrylonitrile fiber, which is ready for use;

Step 5. Put the polyester fiber into the plasma treatment apparatus, vacuumize and treat it with oxygen for 1.1h, then directly immerse the treated polyester fiber in a solution with a mass fraction of 29% polyethylene glycol, at a temperature of 27°C After soaking for 6.3 hours, take it out and dry it, then treat it with Ar plasma, the treatment time is 2min, the power is 160W, and the pressure is 56Pa. After the treatment, it is ultrasonically cleaned with distilled water for 7min, and after drying, the modified polyester fiber is prepared for future use;

Step 6. Put polyamide 6 and polyethylene glycol in formic acid with a mass fraction of 98% according to the mass ratio of 70:30, and stir at a temperature of 35°C for 1.6h to form a uniform spinning with a mass fraction of 15%. Liquid, spinning by electrospinning machine, spinning liquid flow rate is 0.3ml/h, nozzle aperture is 1.1mm, obtains modified nylon fiber, standby;

Step 7, according to the parts by weight of 25 parts of the modified nylon fiber, 42 parts of the modified viscose fiber and 28 parts of the modified polyacrylonitrile fiber, the modified nylon fiber made in the step 6, the made in the step 3 The modified polyacrylonitrile fiber synthetic light yarn that modified viscose fiber, step 4 makes; According to the parts by weight of 54 parts of modified polyester fiber and 46 parts of milk fiber, the modified polyester made of milk fiber and step 5 The fiber is synthesized into weft yarn; finally, the warp yarn and weft yarn are synthesized into a prefabricated body for standby;

Step 8, according to the following weight components, each material is weighed and mixed: 2-5 parts of chitosan, 2.5 parts of glycerol, 67 parts of ethanol, 2.2 parts of vegetable wax, 3.2 parts of negative ion powder, obtained suspoemulsion, and The prefabricated body prepared in step 7 is placed in the suspoemulsion, soaked under ultrasonic waves for 12 hours, and then taken out and dried to obtain a sportswear fabric.

Claims (5)

1. An automatic temperature-regulating breathable outdoor sportswear fabric, characterized in that: warp yarns and weft yarns are interwoven into a prefabricated body, and after the prefabricated body is impregnated, the fabric is obtained; wherein the warp yarns are composed of raw materials of the following weight components: 20-30 parts of permanent nylon fiber, 45-50 parts of modified viscose fiber and 20-35 parts of modified polyacrylonitrile fiber; the weft yarn is composed of the following raw materials by weight: 50-60 parts of modified polyester fiber and milk fiber 40-50 servings. 2. A kind of automatic temperature-regulating breathable outdoor sportswear fabric according to claim 1, characterized in that: the modified nylon fiber is polyethylene glycol grafted polyamide 6, wherein the polyethylene glycol molecular weight For 4000-6000. 3. A kind of automatic temperature-regulating breathable outdoor sportswear fabric according to claim 1, characterized in that: the modified viscose fiber is made up of the raw materials of the following weight components: viscose spinning solution 90-95 parts, 5-10 parts of microcapsule compound phase change materials. 4. A kind of automatic temperature-regulating breathable outdoor sportswear fabric according to claim 1, characterized in that: the modified polyester fiber is polyethylene glycol grafted polyethylene terephthalate, wherein , The molecular weight of polyethylene glycol is 1000-2000. 5. the preparation method of a kind of automatic temperature-regulating breathable type outdoor sportswear fabric according to claim 1, is characterized in that, comprises the following steps: Step 1. Prepare n-tetradecane, n-hexadecane, and n-eicosane with a weight ratio of 2:4:1 to form a mixed solution, place the mixed solution in a three-necked bottle and heat it in a water bath, and the temperature of the water bath is 70-80°C , after stirring at a speed of 1000-1300rpm for 10-15min, according to the weight ratio of mixed solution: emulsifier: PVA aqueous solution = 10:0.2:0.5-1.0, add emulsifier and PVA aqueous solution, and stir at a speed of 450-600rpm for 1- 1.5h to form an emulsion, then add dilute sulfuric acid with a concentration of 10%, adjust the pH of the emulsion to 4-5, and set aside; Step 2: Put melamine and formaldehyde with a molar ratio of 1:4.5-5 in a container to form a solution, and stir in a sealed container at 75-80°C for 0.5h, then add a diluted Na ₂ CO ₃ solution with a concentration of 10-15%, and adjust The pH of the solution is 9-10, and stirred at 45-50°C until the solution is clear and transparent; then according to the volume ratio of the solution:emulsion=3:5, add the solution to the emulsion prepared in step 1, stir for 2.5-3h, and form a suspension Separate the suspension with a centrifuge at a speed of 2500-3000rpm, wash the precipitate obtained by centrifugation with ethylene glycol and deionized water for 3-5 times, and then dry it in an oven at 40-50°C for 10- 12h, the microcapsule composite phase change material was prepared and set aside; Step 3, according to the parts by weight of 90-95 parts of viscose spinning solution and 5-10 parts of microcapsule compound phase change material, weigh the viscose spinning solution and the microcapsule compound phase change material prepared in step 2 , mixed and extruded through a spinneret to obtain a modified viscose fiber for subsequent use; Step 4, according to the parts by weight of 70-80 parts of UV-curable acrylate adhesive and 5-7 parts of microcapsule composite phase-change material, weigh the UV-curable acrylate adhesive and the microcapsule prepared in step 2. Capsules are compounded with phase change materials, mixed to obtain a composite adhesive, coated on the polyacrylonitrile fiber by the composite adhesive, and irradiated with ultraviolet light to obtain a modified polyacrylonitrile fiber, which is ready for use; Step 5. Put the polyester fiber into the plasma treatment apparatus, vacuumize and treat it with oxygen for 0.5-1.5h, and then directly immerse the treated polyester fiber in a solution with a mass fraction of 20-35% polyethylene glycol. Soak at a temperature of 25-30°C for 6-7h, take it out and dry it, and then treat it with Ar plasma, the treatment time is 1-2.5min, the power is 100-200W, and the pressure is 50-60Pa. After treatment, it is ultrasonically cleaned with distilled water for 6 -8min, after drying, the modified polyester fiber is obtained, which is for subsequent use; Step six, polyamide 6 and polyethylene glycol are placed in formic acid with a mass fraction of 98% according to the mass ratio of 50-90:10-50, and stirred at a temperature of 30-40°C for 1.5-2h to form a mass fraction It is 14-17% uniform spinning solution, which is spun by an electrospinning machine. The flow rate of the spinning solution is 0.2-0.4ml/h, and the nozzle diameter is 1-1.2mm, so as to obtain modified nylon fiber and set aside; Step 7, according to the parts by weight of 20-30 parts of modified nylon fiber, 45-50 parts of modified viscose fiber and 20-35 parts of modified polyacrylonitrile fiber, the modified nylon fiber obtained in step 6 , the modified viscose fiber that step 3 makes, the modified polyacrylonitrile fiber synthetic light yarn that step 4 makes; According to the parts by weight of 50-60 parts of modified polyester fiber and 40-50 parts of milk fiber, milk The fiber and the modified polyester fiber prepared in step 5 synthesize the weft yarn; finally, the warp yarn and the weft yarn are synthesized into a prefabricated body for subsequent use; Step 8, according to the following weight components, weigh each material and mix: 2-5 parts of chitosan, 2-3 parts of glycerol, 60-75 parts of ethanol, 2-2.5 parts of vegetable wax, 1-5 parts of negative ion powder part to prepare a suspoemulsion, place the prefabricated body prepared in step 7 in the suspoemulsion, immerse it under ultrasonic waves for 10-14 hours, take it out and dry it, and obtain a sportswear fabric.