Cotton-feeling comfortable elastic fragrant fabric made of two-component material and preparation method of cotton-feeling comfortable elastic fragrant fabric

Abstract

The invention relates to the technical field of fabric textile, in particular to a cotton-feeling comfortable elastic fragrant fabric made of a two-component material and a preparation method of the cotton-feeling comfortable elastic fragrant fabric. The cotton-feeling comfortable elastic fragrant fabric comprises the following raw materials in parts by weight: 50-70 parts of cotton fibers, 30-50 parts of polyester fibers, 8-15 parts of spandex fibers, 3-8 parts of functional fibers and 1-3 parts of an aromatic. According to the fabric, the sunflower stalk nanofibers are extremely fine in fiber structure and have the large specific surface area, the spent grain short fibers have the appropriate fiber form and performance, when the sunflower stalk nanofibers and the spent grain short fibers are mixed, the sunflower stalk nanofibers and the spent grain short fibers are ingeniously embedded into the overall structure of the fabric, the arrangement mode of the fibers is optimized, more fine gaps are increased, and the fabric is more comfortable to wear. Compared with the prior art, more channels are opened up for air circulation and water vapor emission, the air permeability and hygroscopicity of the fabric are remarkably enhanced, the fabric is interwoven and synergistic with other fibers, the overall structure of the fabric is more stable and rich in toughness, the softness and comfort of the fabric are greatly improved, and all-around comfortable experience is brought to wearers.

Description

Technical Field

[0001] The invention relates to the technical field of fabric textiles, in particular to a cotton-feeling, comfortable, elastic and fragrant fabric made of a two-component material and a preparation method thereof. Background Art

[0002] Consumers' demand for sportswear has shifted from basic functionality to the trinity of "technology + comfort + fashion", with particular attention paid to the breathability, elasticity, skin-friendliness and environmental friendliness of fabrics.

[0003] Conventional cotton fabrics, when made from pure cotton, have good moisture absorption but poor elasticity and are easily deformed, making them difficult to use for high-intensity exercise. Synthetic fibers, on the other hand, offer excellent elasticity but lack breathability and skin-friendliness. This invention addresses this issue by providing a two-component, cotton-like, comfortable, stretchy, and aromatic fabric and its preparation method. Summary of the Invention

[0004] The purpose of the present invention is to provide a two-component material cotton-feeling comfortable elastic fragrant fabric and a preparation method thereof. The cotton-feeling comfortable elastic fragrant fabric prepared by the present invention not only has good air permeability, moisture absorption and elasticity, but also has excellent antibacterial properties, effectively improving the use performance of the cotton-feeling comfortable elastic fragrant fabric.

[0005] To achieve the above objectives, the present invention provides the following technical solution: a two-component material with a cotton-feeling, comfortable, elastic and aromatic fabric, comprising the following raw materials in parts by weight: 50-70 parts of cotton fiber, 30-50 parts of polyester fiber, 8-15 parts of spandex fiber, 3-8 parts of functional fiber and 1-3 parts of aromatic agent.

[0006] Furthermore, the cotton fiber is long-staple cotton fiber or fine-staple cotton fiber, and the polyester fiber is shaped polyester with a cross-shaped cross section.

[0007] Furthermore, the spandex fiber is a mixed fiber of melt-spun spandex and dry-spun spandex, the mass ratio of melt-spun spandex to dry-spun spandex is (3-5):1, and a drafting machine is used to pre-stretch the fiber to three times its original length.

[0008] Furthermore, the functional fibers include sunflower stem nanofibers and malt grain short fibers, which are mixed using an air-laid machine with a uniformity CV≤8%. The mass ratio of the sunflower stem nanofibers to the malt grain short fibers is (2-4):1.

[0009] Furthermore, the sunflower stem nanofiber is prepared by the following method: agricultural waste sunflower stems are selected, cleaned, crushed and dried, and then soaked in a stainless steel basin filled with a mixed liquid, and the stainless steel basin is placed in a water bath, the temperature is set to 85-90°C, and the mixture is soaked for 3-4 hours. The stems are taken out and added to a double-threaded rod extruder, and continuously extruded at 160-180°C for 20-40 minutes, with a screw speed of 70-90r / min and an extrusion pressure of 10-14Mpa to obtain crude fibers. The crude fibers are placed in a ball mill with zirconia balls as the medium, the mass ratio of the crude fibers to the zirconia balls is 5:1, and the fibers are ground under nitrogen protection for 4-6 hours to obtain sunflower stem nanofibers.

[0010] Furthermore, the mixed liquid is prepared by mixing sodium sulfate, potassium hydroxide and deionized water, the mass ratio of the sodium sulfate, potassium hydroxide and deionized water is 1.5:4:100, the mass ratio of the mixed liquid to the sunflower stem is (12-18):1, the rotation speed of the ball mill is 200-300 r / min, and the moisture content of the crude fiber after extrusion is less than or equal to 8%.

[0011] Furthermore, the wheat grain short fiber is prepared by the following method: waste wheat grain is selected, washed with water, immersed in a reaction solution containing 2-4% cellulase and 0.5-1% xylanase, and placed in a water bath, the temperature is set to 45-50 ° C, the enzymatic hydrolysis reaction is 12-18 hours, the mass ratio of the wheat grain and the reaction solution is (12-18): 1, to obtain wheat grain cellulose, the wheat grain cellulose is placed in a reactor containing butylmethylimidazole chloride ionic liquid, and nano-silica is added at 3-5% of the mass of the wheat grain cellulose, the mass ratio of the wheat grain cellulose and the butylmethylimidazole chloride ionic liquid is 1: (13-19), the stirring speed is set to 300-500r / min, the temperature is set to 45-50 ° C, and the enzymatic hydrolysis reaction is 12-18 hours. The temperature of the coagulation liquid is set to 20-26°C, and the coagulation of the spent grains fiber is completed. The spent grains fiber is subjected to two-stage hot drawing treatment by a hot drawing device. The first-stage drawing rate is controlled at 25-35%, the bath temperature is 60°C during drawing, the second-stage drawing rate is 15-20%, and the bath temperature is raised to 90°C to complete the preparation of spent grains staple fiber.

[0012] Furthermore, the fragrance is prepared by the following method: adding β-cyclodextrin and deionized water to a stainless steel stirred reactor, setting the temperature to 40-60°C, and stirring at 300-500 r / min for 5-10 minutes, then adding lavender essential oil and peppermint essential oil to a clean stainless steel basin, and stirring with a stirrer at 300-500 r / min for 5-10 minutes, taking out and adding dropwise to the stainless steel stirred reactor, and continuously stirring and reacting at 600-800 r / min for 1-3 hours to obtain a fragrance liquid, wherein the mass ratio of the lavender essential oil to the peppermint essential oil is 3:1, taking deionized water, heating it to 50-80°C in a water bath, adding sodium alginate to the deionized water, and continuously stirring at 200-300 r / min for 1-2 hours to obtain a strengthener, cooling the fragrance liquid in the stainless steel stirred reactor to room temperature, adding the strengthener to the stainless steel stirred reactor, and continuously stirring at 200-500 r / min for 30-40 minutes to complete the preparation of the fragrance.

[0013] Furthermore, the mass ratio of the β-cyclodextrin to deionized water is 8:100, the total mass of the lavender essential oil and the peppermint essential oil is 2-2.5 times the mass of the β-cyclodextrin, the mass ratio of the sodium alginate to deionized water is 3:100, and the mass ratio of the fragrance liquid to the enhancer is 1:(1-1.5).

[0014] Furthermore, a method for preparing a cotton-feeling, comfortable, elastic, and aromatic fabric made of a bicomponent material comprises the following steps: Step 1: Select appropriate amounts of cotton fiber and polyester fiber as needed, open and remove impurities in an opener, and then mix them in a multi-bin cotton mixer to obtain mixed yarn. The mixed yarn and functional fiber are pre-mixed in an air-laid machine, and the mixing uniformity CV is controlled to be ≤8% to obtain functional yarn. Step 2: prepare the composite core-spun yarn by using a core-spun spinning machine with spandex fiber as the core yarn and functional spinning as the sheath, setting the spindle speed to 12000 r / min, the yarn guide hook angle to 50°, and the yarn tension to 12 cN; Step 3, weaving the composite core-spun yarn into fabric using a single-jersey circular knitting machine; Step 4: Place the fabric in an ultrasonic padding machine and use fragrance as a bath agent. The mass ratio of fabric to fragrance is 1:10. The fabric is treated at an ultrasonic frequency of 40kHz for 25 minutes to complete the fragrance treatment. Step 5: Place the finished fragrance-treated fabric in a microwave and hot air combined setting machine, set the temperature to 110-120° C., the speed to 15-20 m / min, the overfeed rate to 5-8%, the microwave system power to 8-10 kW, and the hot air system power to 55-70 kW to complete the fabric setting and preparation.

[0015] Compared with the prior art, the present invention has the following beneficial effects: 1. In the present invention, cotton fiber and polyester fiber are blended and spun, so that the fabric has both the comfortable skin-friendliness of cotton fiber and the durability and easy care of polyester fiber. The spandex fiber is a mixture of melt-spun spandex and dry-spun spandex and is pre-stretched, giving the fabric good elasticity. The fiber structure of sunflower stem nanofiber is extremely delicate and has a large specific surface area. The wheat grain short fiber has a suitable fiber morphology and performance. When the two are mixed, they are cleverly embedded in the overall structure of the fabric, further optimizing the arrangement between fibers, adding more tiny gaps, and opening up more channels for air circulation and water vapor dissipation, significantly enhancing the air permeability and moisture absorption of the fabric. It is interwoven and synergistic with other fibers to make the overall structure of the fabric more stable and resilient, greatly improving the softness and comfort of the fabric, and bringing a full range of comfortable experience to the wearer.

[0016] 2. In the present invention, the sunflower stalk nanofibers in the functional fibers have phenolic and flavonoid substances with antibacterial activity present during the preparation process. They will be released from the cell tissue under the action of alkaline environment and temperature, so that the fibers have certain antibacterial ability. At the same time, when the wheat grains short fibers are prepared, the cellulase and xylanase components in the reaction liquid will leave some oligosaccharides or oligosaccharide fragments on the surface or inside of the fibers, and become rougher, forming some tiny concave-convex structures, which can increase the contact area between the fibers and bacteria, making it easier for bacteria to be adsorbed on the fiber surface. At the same time, nano-silica has a large specific surface area and surface energy, can adsorb bacteria and interact with bacterial cell membranes, destroy the integrity of the bacterial cell membranes, and cause the substances in the cells to leak, thereby leading to the death of bacteria, so that the prepared fabrics have higher antibacterial function.

[0017] 3. In the present invention, the sunflower stalk nanofiber is made from discarded sunflower stalks, and the wheat grain short fiber is derived from discarded wheat grains, turning waste into treasure, improving resource utilization, reducing the pressure of waste on the environment, and opening up a new way for the treatment of agricultural waste, thereby reducing the cost of fabric production. DETAILED DESCRIPTION

[0018] The following will be combined with the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0019] It should be noted that the raw materials used in the following examples are all commercially available raw materials.

[0020] Example 1: A two-component cotton-feeling comfortable elastic aromatic fabric comprises the following raw materials in parts by weight: 50 parts of cotton fiber, 30 parts of polyester fiber, 8 parts of spandex fiber, 3 parts of functional fiber and 1 part of aromatic agent.

[0021] The cotton fiber adopts long-staple cotton fiber or fine-staple cotton fiber, and the polyester fiber adopts special-shaped polyester with a cross-shaped cross section.

[0022] The spandex fiber is a blend of melt-spun spandex and dry-spun spandex, the mass ratio of melt-spun spandex to dry-spun spandex is 3:1, and the fiber is pre-stretched to three times its original length using a drafting machine.

[0023] The functional fibers include sunflower stem nanofibers and wheat grains staple fibers, which are mixed using an air-laid web machine with a uniformity CV of ≤8%. The mass ratio of the sunflower stem nanofibers to the wheat grains staple fibers is 2:1.

[0024] Sunflower stem nanofibers are prepared by the following method: agricultural waste sunflower stems are selected, cleaned, crushed and dried, and then immersed in a stainless steel basin filled with a mixed liquid. The stainless steel basin is placed in a water bath, set to a temperature of 85°C, and immersed for 3 hours. The stems are taken out and added to a double-threaded rod extruder, and continuously extruded at 160°C for 20 minutes, with a screw speed of 70 r / min and an extrusion pressure of 10 MPa to obtain crude fibers. The crude fibers are placed in a ball mill with zirconia balls as the medium, and the mass ratio of crude fibers to zirconia balls is 5:1. The fibers are then ground under nitrogen protection for 4 hours to obtain sunflower stem nanofibers.

[0025] The mixed liquid is prepared by mixing sodium sulfate, potassium hydroxide and deionized water, the mass ratio of sodium sulfate, potassium hydroxide and deionized water is 1.5:4:100, the mass ratio of the mixed liquid to the sunflower stem is 12:1, the speed of the ball mill is 200 r / min, and the moisture content of the crude fiber after extrusion is less than or equal to 8%.

[0026] The spent grains staple fiber was prepared by the following method: waste spent grains were selected, washed with water, and then immersed in a reaction solution containing 2% cellulase and 0.5% xylanase, and placed in a water bath. The temperature was set at 45°C, and the enzymatic hydrolysis reaction was carried out for 12 hours. The mass ratio of spent grains to the reaction solution was 12:1 to obtain spent grains cellulose. The spent grains cellulose was placed in a reactor containing butylmethylimidazole chloride ionic liquid, and nano-silica was added at 3% of the mass of spent grains cellulose. The mass ratio of spent grains cellulose to butylmethylimidazole chloride ionic liquid was 1:13. The stirring speed was set at 300 r / min and the temperature was set at 50°C. , continue stirring for 3 hours, filter and obtain spinning solution, pass the spinning solution through a spinning equipment with a 0.1 mm spinneret, set the spinning speed to 40 m / min, and at the same time, place the spinning stream in a coagulation tank containing a coagulation liquid composed of 10% ethanol and 2% citric acid, with a residence time of 50 seconds, set the temperature of the coagulation liquid to 20°C, complete the coagulation of the spent grains fiber, and perform two-stage hot drawing treatment on the spent grains fiber through a hot drawing equipment. The first-stage drawing rate is controlled at 25%, the bath temperature during drawing is 60°C, the second-stage drawing rate is 15%, and the bath temperature is increased to 90°C to complete the preparation of spent grains staple fiber.

[0027] The fragrance is prepared by the following method: β-cyclodextrin and deionized water are added to a stainless steel stirred reactor, the temperature is set to 40°C, and the mixture is stirred at 300 r / min for 5 minutes. Lavender essential oil and peppermint essential oil are then added to a clean stainless steel basin and stirred at 300 r / min for 5 minutes. The essential oils are taken out and added dropwise to the stainless steel stirred reactor, and the mixture is stirred at 600 r / min for 1 hour to obtain a fragrance liquid, wherein the mass ratio of lavender essential oil to peppermint essential oil is 3:1. Deionized water is also taken and heated to 50°C in a water bath. Sodium alginate is added to the deionized water, and the mixture is stirred at 200 r / min for 1 hour to obtain a reinforcing agent. After the fragrance liquid in the stainless steel stirred reactor is cooled to room temperature, the reinforcing agent is added to the stainless steel stirred reactor, and the mixture is stirred at 200 r / min for 30 minutes to complete the preparation of the fragrance.

[0028] The mass ratio of β-cyclodextrin to deionized water is 8:100, the total mass of lavender essential oil and peppermint essential oil is twice the mass of β-cyclodextrin, the mass ratio of sodium alginate to deionized water is 3:100, and the mass ratio of fragrance liquid to enhancer is 1:1.

[0029] A method for preparing a cotton-feeling, comfortable, elastic, and aromatic fabric made of a two-component material comprises the following steps: Step 1: Select appropriate amounts of cotton fiber and polyester fiber as needed, open and remove impurities in an opener, and then mix them in a multi-bin cotton mixer to obtain mixed yarn. The mixed yarn and functional fiber are pre-mixed in an air-laid machine, and the mixing uniformity CV is controlled to be ≤8% to obtain functional yarn. Step 2: prepare the composite core-spun yarn by using a core-spun spinning machine with spandex fiber as the core yarn and functional spinning as the sheath, setting the spindle speed to 12000 r / min, the yarn guide hook angle to 50°, and the yarn tension to 12 cN; Step 3, weaving the composite core-spun yarn into fabric using a single-jersey circular knitting machine; Step 4: Place the fabric in an ultrasonic padding machine and use fragrance as a bath agent. The mass ratio of fabric to fragrance is 1:10. The fabric is treated at an ultrasonic frequency of 40kHz for 25 minutes to complete the fragrance treatment. Step 5: Place the finished fragrance-treated fabric in a microwave and hot air combined setting machine, set the temperature to 110°C, the speed to 15m / min, the overfeed rate to 6.5%, the microwave system power to 9kW, and the hot air system power to 55kW to complete the fabric setting and preparation.

[0030] Example 2: A two-component cotton-feeling, comfortable, elastic, and aromatic fabric comprises the following raw materials in parts by weight: 60 parts of cotton fiber, 40 parts of polyester fiber, 11 parts of spandex fiber, 5.5 parts of functional fiber, and 2 parts of aromatic agent.

[0031] The cotton fiber adopts long-staple cotton fiber or fine-staple cotton fiber, and the polyester fiber adopts special-shaped polyester with a cross-shaped cross section.

[0032] The spandex fiber is a blend of melt-spun spandex and dry-spun spandex, with a mass ratio of melt-spun spandex to dry-spun spandex of 4:1, and is pre-stretched to three times its original length using a drafting machine.

[0033] The functional fibers include sunflower stem nanofibers and wheat grains short fibers, which are mixed using an air-laid machine with a uniformity CV of ≤8%. The mass ratio of the sunflower stem nanofibers to the wheat grains short fibers is 3:1.

[0034] Sunflower stem nanofibers are prepared by the following method: agricultural waste sunflower stems are selected, cleaned, crushed and dried, and then immersed in a stainless steel basin filled with a mixed liquid. The stainless steel basin is placed in a water bath, set at a temperature of 87.5°C, and immersed for 3.5 hours. The stems are taken out and added to a double-threaded rod extruder, and continuously extruded at 170°C for 30 minutes, with a screw speed of 80 r / min and an extrusion pressure of 12 MPa to obtain crude fibers. The crude fibers are placed in a ball mill with zirconia balls as the medium, and the mass ratio of crude fibers to zirconia balls is 5:1. The fibers are then ground under nitrogen protection for 5 hours to obtain sunflower stem nanofibers.

[0035] The mixed liquid is prepared by mixing sodium sulfate, potassium hydroxide and deionized water, the mass ratio of sodium sulfate, potassium hydroxide and deionized water is 1.5:4:100, the mass ratio of the mixed liquid to the sunflower stem is 15:1, the speed of the ball mill is 250r / min, and the moisture content of the crude fiber after extrusion is less than or equal to 8%.

[0036] The spent grains short fiber was prepared by the following method: waste spent grains were selected, washed with water, and then immersed in a reaction solution containing 3% cellulase and 0.75% xylanase, and placed in a water bath. The temperature was set at 47.5°C, and the enzymatic hydrolysis reaction was carried out for 15 hours. The mass ratio of spent grains to reaction solution was 15:1 to obtain spent grains cellulose. The spent grains cellulose was placed in a reactor containing butylmethylimidazole chloride ionic liquid, and nano-silica with a mass ratio of 4% of the spent grains cellulose was added. The mass ratio of spent grains cellulose to butylmethylimidazole chloride ionic liquid was 1:16. The stirring speed was set at 400 r / min and the temperature was set at 75°C. The stirring was continued for 4.5 hours, and the spinning solution was obtained after filtration. The spinning solution was passed through a spinning device with a 0.125 mm spinneret, and the spinning speed was set to 50 m / min. At the same time, the spinning stream was placed in a coagulation tank containing a coagulation liquid composed of 12.5% ​​ethanol and 3% citric acid. The residence time was 60 seconds, and the temperature of the coagulation liquid was set to 23°C to complete the coagulation of the spent grains fiber. The spent grains fiber was subjected to two-stage hot drawing treatment by a hot drawing device. The first-stage drawing rate was controlled at 30%, the bath temperature during drawing was 60°C, the second-stage drawing rate was 17%, and the bath temperature was increased to 90°C to complete the preparation of spent grains staple fiber.

[0037] The fragrance is prepared by the following method: β-cyclodextrin and deionized water are added to a stainless steel stirred reactor, the temperature is set to 50°C, and the mixture is stirred at 400 r / min for 7.5 minutes. Lavender essential oil and peppermint essential oil are then added to a clean stainless steel basin and stirred at 400 r / min for 7.5 minutes. The essential oils are taken out and added dropwise to a stainless steel stirred reactor, and the mixture is stirred at 700 r / min for 2 hours to obtain a fragrance liquid, wherein the mass ratio of lavender essential oil to peppermint essential oil is 3:1. Deionized water is also taken and heated to 65°C in a water bath. Sodium alginate is added to the deionized water and the mixture is stirred at 250 r / min for 1.5 hours to obtain a reinforcing agent. After the fragrance liquid in the stainless steel stirred reactor is cooled to room temperature, the reinforcing agent is added to the stainless steel stirred reactor and the mixture is stirred at 350 r / min for 35 minutes to complete the preparation of the fragrance.

[0038] The mass ratio of β-cyclodextrin to deionized water is 8:100, the total mass of lavender essential oil and peppermint essential oil is 2.25 times the mass of β-cyclodextrin, the mass ratio of sodium alginate to deionized water is 3:100, and the mass ratio of fragrance liquid to enhancer is 1:1.25.

[0039] A method for preparing a cotton-feeling, comfortable, elastic, and aromatic fabric made of a two-component material comprises the following steps: Step 1: Select appropriate amounts of cotton fiber and polyester fiber as needed, open and remove impurities in an opener, and then mix them in a multi-bin cotton mixer to obtain mixed yarn. The mixed yarn and functional fiber are pre-mixed in an air-laid machine, and the mixing uniformity CV is controlled to be ≤8% to obtain functional yarn. Step 2: prepare the composite core-spun yarn by using a core-spun spinning machine with spandex fiber as the core yarn and functional spinning as the sheath, setting the spindle speed to 12000 r / min, the yarn guide hook angle to 50°, and the yarn tension to 12 cN; Step 3, weaving the composite core-spun yarn into fabric using a single-jersey circular knitting machine; Step 4: Place the fabric in an ultrasonic padding machine and use fragrance as a bath agent. The mass ratio of fabric to fragrance is 1:10. The fabric is treated at an ultrasonic frequency of 40kHz for 25 minutes to complete the fragrance treatment. Step 5: Place the finished fragrance-treated fabric in a microwave and hot air combined setting machine, set the temperature to 115°C, the speed to 17.5m / min, the overfeed rate to 6.5%, the microwave system power to 9kW, and the hot air system power to 62kW to complete the fabric setting and preparation.

[0040] Example 3: A two-component cotton-feeling, comfortable, elastic, and aromatic fabric, comprising the following raw materials in parts by weight: 70 parts of cotton fiber, 50 parts of polyester fiber, 15 parts of spandex fiber, 8 parts of functional fiber, and 3 parts of aromatic agent.

[0041] The cotton fiber adopts long-staple cotton fiber or fine-staple cotton fiber, and the polyester fiber adopts special-shaped polyester with a cross-shaped cross section.

[0042] The spandex fiber is a blend of melt-spun spandex and dry-spun spandex, with a mass ratio of melt-spun spandex to dry-spun spandex of 5:1, and is pre-stretched to three times its original length using a drafting machine.

[0043] The functional fibers include sunflower stem nanofibers and wheat grains staple fibers, which are mixed using an air-laid web machine with a uniformity CV of ≤8%. The mass ratio of the sunflower stem nanofibers to the wheat grains staple fibers is 4:1.

[0044] Sunflower stem nanofibers are prepared by the following method: agricultural waste sunflower stems are selected, cleaned, crushed and dried, and then immersed in a stainless steel basin filled with a mixed liquid. The stainless steel basin is placed in a water bath, set at a temperature of 90°C, and immersed for 4 hours. The stems are taken out and added to a double-threaded rod extruder, and continuously extruded at 180°C for 40 minutes, with a screw speed of 90 r / min and an extrusion pressure of 14 MPa to obtain crude fibers. The crude fibers are placed in a ball mill with zirconia balls as the medium, and the mass ratio of crude fibers to zirconia balls is 5:1. The fibers are then ground under nitrogen protection for 6 hours to obtain sunflower stem nanofibers.

[0045] The mixed liquid is prepared by mixing sodium sulfate, potassium hydroxide and deionized water, the mass ratio of sodium sulfate, potassium hydroxide and deionized water is 1.5:4:100, the mass ratio of the mixed liquid to the sunflower stem is 18:1, the rotation speed of the ball mill is 200-300r / min, and the moisture content of the crude fiber after extrusion is less than or equal to 8%.

[0046] The spent grains staple fiber was prepared by the following method: waste spent grains were selected, washed with water, immersed in a reaction solution containing 4% cellulase and 1% xylanase, placed in a water bath, set at 50°C, and subjected to enzymatic hydrolysis for 12-18 hours. The mass ratio of spent grains to reaction solution was 18:1 to obtain spent grains cellulose. The spent grains cellulose was placed in a reactor containing butylmethylimidazole chloride ionic liquid, and nano-silica was added at 5% of the mass of spent grains cellulose. The mass ratio of spent grains cellulose to butylmethylimidazole chloride ionic liquid was 1:19. The stirring speed was set at 500 r / min and the temperature was set at 80°C. , continue stirring for 6 hours, filter and obtain spinning solution, pass the spinning solution through a spinning equipment with a 0.15 mm spinneret, set the spinning speed to 60 m / min, and at the same time, place the spinning stream in a coagulation tank containing a coagulation liquid composed of 15% ethanol and 4% citric acid, with a residence time of 70 seconds, and set the temperature of the coagulation liquid to 26°C to complete the coagulation of the spent grains fiber. The spent grains fiber is subjected to two-stage hot drawing treatment by a hot drawing equipment, with the first-stage drawing rate controlled at 35%, the bath temperature during drawing being 60°C, the second-stage drawing rate being 20%, and the bath temperature being raised to 90°C to complete the preparation of spent grains staple fiber.

[0047] The fragrance is prepared by the following method: β-cyclodextrin and deionized water are added to a stainless steel stirred reactor, the temperature is set to 60°C, and the mixture is stirred at 500 r / min for 10 minutes. Lavender essential oil and peppermint essential oil are then added to a clean stainless steel basin and stirred at 500 r / min for 5-10 minutes. The essential oils are taken out and added dropwise to the stainless steel stirred reactor, and the mixture is stirred at 800 r / min for 1-3 hours to obtain a fragrance liquid, wherein the mass ratio of lavender essential oil to peppermint essential oil is 3:1. Deionized water is also taken and heated to 80°C in a water bath. Sodium alginate is added to the deionized water, and the mixture is stirred at 300 r / min for 2 hours to obtain a reinforcing agent. After the fragrance liquid in the stainless steel stirred reactor is cooled to room temperature, the reinforcing agent is added to the stainless steel stirred reactor, and the mixture is stirred at 500 r / min for 40 minutes to complete the preparation of the fragrance.

[0048] The mass ratio of β-cyclodextrin to deionized water is 8:100, the total mass of lavender essential oil and peppermint essential oil is 2.5 times the mass of β-cyclodextrin, the mass ratio of sodium alginate to deionized water is 3:100, and the mass ratio of fragrance liquid to enhancer is 1:1.5.

[0049] A method for preparing a cotton-feeling, comfortable, elastic, and aromatic fabric made of a two-component material comprises the following steps: Step 1: Select appropriate amounts of cotton fiber and polyester fiber as needed, open and remove impurities in an opener, and then mix them in a multi-bin cotton mixer to obtain mixed yarn. The mixed yarn and functional fiber are pre-mixed in an air-laid machine, and the mixing uniformity CV is controlled to be ≤8% to obtain functional yarn. Step 2: prepare the composite core-spun yarn by using a core-spun spinning machine with spandex fiber as the core yarn and functional spinning as the sheath, setting the spindle speed to 12000 r / min, the yarn guide hook angle to 50°, and the yarn tension to 12 cN; Step 3, weaving the composite core-spun yarn into fabric using a single-jersey circular knitting machine; Step 4: Place the fabric in an ultrasonic padding machine and use fragrance as a bath agent. The mass ratio of fabric to fragrance is 1:10. The fabric is treated at an ultrasonic frequency of 40kHz for 25 minutes to complete the fragrance treatment. Step 5: Place the finished fragrance-treated fabric in a microwave and hot air combined setting machine, set the temperature to 120°C, the speed to 20m / min, the overfeed rate to 8%, the microwave system power to 10kW, and the hot air system power to 70kW to complete the fabric setting and preparation.

[0050] Comparative Example 1: The difference between this comparative example and Example 1 is that no malt grain short fibers are added during the preparation of the functional fibers in this comparative example.

[0051] Comparative Example 2: The difference between this comparative example and Example 1 is that no sunflower stem nanofibers are added during the preparation of the functional fibers in this comparative example.

[0052] Comparative Example 3: This comparative example differs from Example 1 in that no polyester fiber is added during the preparation process of this comparative example.

[0053] Comparative Example 4: This comparative example differs from Example 1 in that sodium alginate is not added in the preparation of the fragrance in this comparative example.

[0054] Performance test: The fabrics prepared in Example 1, Example 2, Example 3, Comparative Example 1, Comparative Example 2, Comparative Example 3 and Comparative Example 4 were subjected to performance tests. The test items and test methods are as follows: The antibacterial property of fabrics is tested using the shaking flask method. A certain amount of fabric sample is placed in a culture medium containing a certain amount of bacteria. After shaking and culturing at a specific temperature for a certain period of time, the number of surviving bacteria in the culture medium is determined by the plate count method, and the antibacterial performance is evaluated by calculating the inhibition rate. The air permeability is tested using the YG461E digital fabric air permeability meter. The fabric sample is fixed on the test hole, and the instrument measures the amount of air passing through a unit area of ​​the fabric per unit time under a specified pressure difference. The hygroscopicity is tested using the weighing method. The fabric sample is balanced under standard atmospheric conditions and then weighed. It is then hung in an environment with specified humidity and temperature and weighed again after a certain period of time. The percentage of the weight of the moisture absorbed by the fabric to the original weight is calculated to express the hygroscopicity. The elasticity is tested using the LLY-061E electronic single yarn strength tester. A certain length of fabric sample is stretched at a certain stretching speed, and the elastic recovery rate of the fabric during the stretching process is measured to evaluate its elastic performance. The fragrance retention rate after washing is tested by using professional instruments such as an electronic nose to measure the concentration of residual aromatic substances on the fabric after the fabric has been subjected to multiple standard washing procedures. The concentration of the residual aromatic substances on the fabric is then compared with the concentration of the aromatic substances before washing to calculate the fragrance retention rate after washing.

[0055] The obtained test data are recorded in Table 1 below:

[0056] It can be seen that the antibacterial properties, air permeability, elasticity, moisture absorption and fragrance retention of the fabrics prepared in Comparative Examples 1, 2, 3 and 4 are lower than those in Examples 1, 2 and 3; Comparison and analysis of the relevant data in Table 1 demonstrate that the fabric treated with the bi-component cotton-feeling, comfortable, stretch, and aromatic fabric and its preparation method not only exhibits excellent antibacterial properties, breathability, and elasticity, but also possesses superior moisture absorption. This demonstrates that the bi-component cotton-feeling, comfortable, stretch, and aromatic fabric and its preparation method provided by the present invention have a broader market prospect and are more suitable for promotion.

[0057] Throughout this specification, references to terms such as "one embodiment," "example," and "specific example" indicate that the specific features, structures, materials, or characteristics described in conjunction with that embodiment or example are included in at least one embodiment or example of the present invention. In this specification, schematic representations of these terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.

[0058] The preferred embodiments of the present invention disclosed above are intended only to help illustrate the present invention. These preferred embodiments do not exhaustively describe all details, nor do they limit the present invention to the specific embodiments described. Obviously, many modifications and variations are possible based on the content of this specification. These embodiments are selected and described in detail in this specification to better explain the principles and practical applications of the present invention, thereby enabling those skilled in the art to better understand and utilize the present invention. The present invention is limited only by the claims and their full scope and equivalents.

Claims

1. A two-component cotton-feeling, comfortable, elastic, and aromatic fabric, characterized by: The invention comprises the following raw materials in parts by weight: 50-70 parts of cotton fiber, 30-50 parts of polyester fiber, 8-15 parts of spandex fiber, 3-8 parts of functional fiber and 1-3 parts of fragrance; The functional fibers include sunflower stalk nanofibers and malt dregs short fibers, which are mixed using an air-laid machine with a uniformity CV of ≤8%. The mass ratio of the sunflower stalk nanofibers to the malt dregs short fibers is (2-4):

1. The sunflower stalk nanofiber is prepared by the following method: selecting agricultural waste sunflower stalks, cleaning, crushing and drying them, and then soaking them in a stainless steel basin filled with a mixed liquid, and placing the stainless steel basin in a water bath, setting the temperature to 85-90°C, soaking for 3-4 hours, taking them out and adding them to a double-threaded rod extruder, continuously extruding for 20-40 minutes at 160-180°C, with a screw speed of 70-90 r / min and an extrusion pressure of 10-14 MPa to obtain crude fibers, placing the crude fibers in a ball mill, using zirconia balls as a medium, with a mass ratio of the crude fibers to the zirconia balls of 5:1, and grinding them under nitrogen protection for 4-6 hours to obtain sunflower stalk nanofibers.

2. The cotton-feeling, comfortable, elastic, and fragrant bi-component fabric according to claim 1, characterized in that: The cotton fibers are long-staple cotton fibers or fine-staple cotton fibers, and the polyester fibers are shaped polyester fibers with a cross-shaped cross section.

3. The cotton-feeling, comfortable, elastic, and fragrant bi-component fabric according to claim 1, characterized in that: The spandex fiber is a mixed fiber of melt-spun spandex and dry-spun spandex, the mass ratio of the melt-spun spandex to the dry-spun spandex is (3-5):1, and is pre-stretched to 3 times its original length using a drafting machine.

4. The cotton-feeling, comfortable, elastic, and fragrant bi-component fabric according to claim 1, characterized in that: The mixed liquid is prepared by mixing sodium sulfate, potassium hydroxide and deionized water, the mass ratio of the sodium sulfate, potassium hydroxide and deionized water is 1.5:4:100, the mass ratio of the mixed liquid to the sunflower stem is (12-18):1, the rotation speed of the ball mill is 200-300 r / min, and the moisture content of the crude fiber after extrusion is less than or equal to 8%.

5. The cotton-feeling, comfortable, elastic, and fragrant bi-component fabric according to claim 1, characterized in that: The wheat grain short fiber is prepared by the following method: waste wheat grains are selected, washed with water, immersed in a reaction solution containing 2-4% cellulase and 0.5-1% xylanase, placed in a water bath, set at a temperature of 45-50°C, and subjected to enzymatic hydrolysis for 12-18 hours, wherein the mass ratio of the wheat grains to the reaction solution is (12-18):1, to obtain wheat grain cellulose, the wheat grain cellulose is placed in a reactor containing butylmethylimidazole chloride ionic liquid, and nano-silica is added at 3-5% of the mass of the wheat grain cellulose, wherein the mass ratio of the wheat grain cellulose to the butylmethylimidazole chloride ionic liquid is 1:(13-19), the stirring speed is set at 300-500 r / min, the temperature is set at 50 -80℃, continue stirring for 3-6h, filter to obtain spinning solution, pass the spinning solution through a spinning device with a 0.1-0.15 mm spinneret, set the spinning speed to 40-60m / min, and at the same time, place the spinning stream in a coagulation tank containing a coagulation liquid composed of 10-15% ethanol and 2-4% citric acid, with a residence time of 50-70s, set the temperature of the coagulation liquid to 20-26℃, complete the coagulation of the spent grains fiber, and perform two-stage hot drawing treatment on the spent grains fiber through a hot drawing device, the first-stage drawing rate is controlled at 25-35%, the bath temperature during drawing is 60℃, the second-stage drawing rate is 15-20%, and the bath temperature is increased to 90℃ to complete the preparation of spent grains staple fiber.

6. The cotton-feeling, comfortable, elastic, and fragrant bi-component fabric according to claim 1, characterized in that: The fragrance is prepared by the following method: adding beta-cyclodextrin and deionized water to a stainless steel stirred reactor, setting the temperature to 40-60°C, and stirring at 300-500 r / min for 5-10 minutes; then adding lavender essential oil and peppermint essential oil to a clean stainless steel basin, stirring at 300-500 r / min for 5-10 minutes, taking out and adding dropwise to the stainless steel stirred reactor, and continuously stirring and reacting at 600-800 r / min for 1-3 hours to obtain a fragrance liquid, wherein the mass ratio of the lavender essential oil to the peppermint essential oil is 3:1; taking deionized water, heating it to 50-80°C in a water bath, adding sodium alginate to the deionized water, and continuously stirring at 200-300 r / min for 1-2 hours to obtain a strengthener; after cooling the fragrance liquid in the stainless steel stirred reactor to room temperature, adding the strengthener to the stainless steel stirred reactor, and continuously stirring at 200-500 r / min for 30-40 minutes to complete the preparation of the fragrance.

7. The cotton-feeling, comfortable, elastic, and fragrant bi-component fabric according to claim 6, characterized in that: The mass ratio of the β-cyclodextrin to deionized water is 8:100, the total mass of the lavender essential oil and the peppermint essential oil is 2-2.5 times the mass of the β-cyclodextrin, the mass ratio of the sodium alginate to deionized water is 3:100, and the mass ratio of the aromatic liquid to the enhancer is 1:(1-1.5).

8. The method for preparing the cotton-feeling comfortable elastic aromatic fabric made of a bicomponent material according to any one of claims 1 to 7, characterized in that: The following steps are involved: Step 1: Select appropriate amounts of cotton fiber and polyester fiber as needed, open and remove impurities in an opener, and then mix them in a multi-bin cotton mixer to obtain mixed yarn. The mixed yarn and functional fiber are pre-mixed in an air-laid machine, and the mixing uniformity CV is controlled to be ≤8% to obtain functional yarn. Step 2: prepare the composite core-spun yarn by using a core-spun spinning machine with spandex fiber as the core yarn and functional spinning as the sheath, setting the spindle speed to 12000 r / min, the yarn guide hook angle to 50°, and the yarn tension to 12 cN; Step 3, weaving the composite core-spun yarn into fabric using a single-jersey circular knitting machine; Step 4: Place the fabric in an ultrasonic padding machine and use fragrance as a bath agent. The mass ratio of fabric to fragrance is 1:

10. The fabric is treated at an ultrasonic frequency of 40kHz for 25 minutes to complete the fragrance treatment. Step 5: Place the finished fragrance-treated fabric in a microwave and hot air combined setting machine, set the temperature to 110-120° C., the speed to 15-20 m / min, the overfeed rate to 5-8%, the microwave system power to 8-10 kW, and the hot air system power to 55-70 kW to complete the fabric setting and preparation.

Images