Antibacterial, anti-mite and anti-static multifunctional China-hemp viscose composite yarn and processing method and application of antibacterial, anti-mite and anti-static multifunctional China-hemp viscose composite yarn

Abstract

The invention relates to an antibacterial, anti-mite and anti-static multifunctional China-hemp viscose composite yarn and a processing method and application thereof. China-hemp stalk cores serve as raw materials and are subjected to pretreatment, prehydrolysis, cooking, pulping and bleaching to obtain China-hemp pulp; then dipping, aging, sulfonating, dissolving and ripening the hemp viscose fiber by adopting a conventional viscose fiber preparation process method to obtain a hemp viscose spinning solution; the method comprises the following steps: pretreating waste wool to prepare a wool keratin multifunctional solution, mixing the China-hemp viscose spinning solution with the prepared wool keratin multifunctional solution according to a certain proportion to obtain a China-hemp-keratin composite spinning solution, and carrying out wet spinning to obtain China-hemp viscose-keratin composite fibers; and finally, blending the China-hemp viscose-keratin composite fiber and fine wool according to a certain proportion to obtain the China-hemp viscose-wool composite yarn. The yarn has antibacterial, anti-mite and antistatic effects.

Description

Technical Field

[0001] The present application relates to the field of a processing method for functional composite yarns, and in particular to a processing method and use of a multifunctional hemp-viscose composite yarn that is antibacterial, anti-mite and antistatic. Background Art

[0002] With the continuous improvement of living standards and health awareness, people have requirements for health functions of textiles that are in close contact with the skin, and pay more attention to the home living environment. In the living environment, various textiles such as underwear, socks, towels, pajamas, bedding textiles, etc. and the surface of human skin often inhabit many microorganisms. Most of these microorganisms are bacteria, the rest are molds and fungi, and there are countless mites, which use human secretions to grow and reproduce. Bacteria on the skin not only irritate the skin and cause itching, but also cause skin lesions, affecting people's lives and health. People hope that these textiles should have safety and health in addition to normal performance, and have certain antibacterial, deodorizing, anti-mite health functions and inhibit the reproduction of microorganisms to maintain hygiene and prevent infection and disease transmission.

[0003] Hemp fibers have certain antibacterial and mildew-proof effects. Hemp fibers generally contain beneficial substances such as antibacterial flavonol. Among them, hemp fibers contain a variety of trace elements that are beneficial to human health, as well as trace phenolic substances, which makes hemp fibers have natural bactericidal and disinfecting effects. Hollow hemp fibers are rich in oxygen, which also makes it difficult for anaerobic bacteria to survive. In addition, graphene, as a two-dimensional structured nanomaterial, has excellent comprehensive properties such as high mechanical strength, antibacterial properties, excellent thermal conductivity and electrical conductivity, and is often used as a material for antibacterial composite materials. By utilizing the special covalent bonding effect of ionic liquids and keratin on graphene, graphene can be well dispersed in a wool keratin solution dissolved by the ionic liquid method.

[0004] The present application prepares a hemp viscose spinning solution by viscoseizing hemp, and then adds a keratin functional solution containing graphene to wet spinning, blending and other processing procedures to finally prepare a multifunctional hemp viscose composite yarn with antibacterial and anti-mite properties and antistatic properties. The hemp viscose composite yarn has the functions of moisture absorption and breathability, antibacterial and anti-mite properties, softness and comfort, and antistatic properties. The hemp viscose composite yarn can be mixed with other types of yarns to weave composite fabrics, which can be used as fabrics for shirts, pants, underwear, socks, pajamas, towels, pillowcases, etc., providing ideas for the development of functional health textiles that meet the needs of the human body. Summary of the invention

[0005] In order to improve the antibacterial function of textiles, the present application provides a multifunctional hemp-viscose composite yarn with antibacterial, anti-mite and antistatic properties, as well as a processing method and use, which can meet people's needs for antibacterial and antistatic functional yarns and fabrics, and also help develop high-value utilization methods for waste wool and hemp stalk cores.

[0006] In the first aspect, the present application provides an antibacterial, anti-mite, antistatic multifunctional hemp viscose composite yarn and a processing method and use thereof, which adopt the following technical solutions:

[0007] A method for processing antibacterial, anti-mite and antistatic multifunctional hemp viscose composite yarn, comprising pre-treating hemp stalk core as raw material, pre-hydrolyzing, cooking, beating, bleaching and filtering to obtain hemp pulp;

[0008] Then, the hemp pulp is impregnated, aged, sulfonated, dissolved, and matured by a conventional viscose fiber preparation process to obtain a hemp viscose spinning solution; waste wool is pretreated to prepare a wool keratin multifunctional solution, the hemp viscose spinning solution and the prepared wool keratin functional solution are mixed in a certain proportion to obtain a hemp-keratin composite spinning solution, and hemp viscose-keratin composite fibers are prepared by wet spinning;

[0009] Finally, the hemp viscose-keratin composite fiber is blended with fine wool in a certain proportion to obtain the hemp viscose-wool composite yarn.

[0010] By adopting the above technical solution, by combining the hemp stalk core with wool keratin and fine wool, the advantages of each component are fully utilized, and multiple technical functions are achieved; first, hemp, as a natural plant fiber, has good air permeability and antibacterial properties, which can effectively inhibit the growth of bacteria and mites, and improve the hygiene and comfort of the fabric; secondly, keratin comes from waste wool, and uses its natural biocompatibility and antibacterial properties to form a natural antibacterial protective layer in the fiber, which enhances the antibacterial and anti-mite functions of the fiber. At the same time, the introduction of keratin can improve the softness and elasticity of the fiber, and enhance the feel and durability of the yarn. Furthermore, the hemp viscose-keratin composite fiber is processed by wet spinning, which not only retains the natural functions of hemp, but also improves the strength and durability of the fiber, making it suitable for high-intensity use occasions. The blending of fine wool further improves the warmth and hygroscopicity of the yarn. At the same time, fine wool itself has natural antistatic properties, so that the final composite yarn can still effectively avoid static electricity accumulation and hair adhesion after repeated wearing and washing. Through the triple combination of hemp, keratin and wool, the yarn has multiple excellent properties such as natural, environmentally friendly, antibacterial and antistatic, which meets the high requirements of modern textiles for health, safety, comfort and functionality.

[0011] Preferably, the hemp stalk core is pretreated as raw material, and the hemp stalk core is cut into a length of 2 to 3 cm after the hemp skin and stalk are separated, and then pre-wetted by spraying water through a sieve.

[0012] By adopting the above technical scheme, the hemp stalk core is cut to 2-3 cm and pre-wetted by spraying water through a screen, so that the hemp raw material is effectively pre-treated, which provides a good foundation for subsequent fiber extraction and processing, ensures that the hemp stalk core is evenly wetted, improves the flexibility and processability of its fiber, and reduces the breakage rate in the subsequent processing process. Precise cutting and pre-wetting treatment help to improve the quality of hemp pulp and enhance the extraction efficiency of cellulose. The final hemp viscose fiber has higher fiber strength and better overall performance, effectively removes some impurities, reduces the impurity content in the spinning solution, further improves the purity and comfort of the yarn, and ultimately enhances the antibacterial, anti-mite, anti-static and other multiple functions of the textile.

[0013] Preferably, the pre-hydrolysis is to put the pre-treated hemp stalk core and a proper amount of water into a cooking tank, and boil it after multiple stages of heating and exhaust.

[0014] By adopting the above technical scheme, the pretreated hemp stalk core is loaded into a cooking tank together with an appropriate amount of water, and is boiled after multiple stages of heating and exhaust. The fiber structure of hemp is effectively destroyed during the pre-hydrolysis process of hemp, making it easier for subsequent fiber extraction. By controlling the heating and exhaust processes, the dissolution and depolymerization effects of cellulose are optimized, and the natural cellulose components of hemp can be released to the maximum extent, thereby improving its water solubility and fiber quality. The high temperature and pressure in the boiling process help to remove impurities, resins and colloids in the plant, reduce obstacles to the subsequent spinning process, thereby improving the purity and spinning efficiency of hemp pulp. The hemp stalk core after boiling can be better compatible with the subsequent viscose fiber process, ensuring that the final product has stronger antibacterial, anti-mite and anti-static functional properties.

[0015] Preferably, the cooking is performed by adding a certain amount of sodium hydroxide, sodium sulfide and other additives into a cooking tank to remove lignin and hemicellulose from the hemp stalk core.

[0016] By adopting the above technical scheme, by adding appropriate amounts of sodium hydroxide, sodium sulfide and other additives during the cooking process, the lignin and hemicellulose in the hemp stalk core are effectively removed, the extraction efficiency of hemp fiber is greatly improved, the chemical bonds in lignin and hemicellulose are decomposed, and the insoluble components are effectively removed, thereby improving the purity and quality of the fiber, significantly improving the spinnability of the fiber, making the hemp fiber more slender and uniform, and after removing lignin and hemicellulose, the remaining cellulose components will have higher biodegradability and hydrophilicity, which will help to improve the comfort, hygroscopicity and environmental protection of the final fiber.

[0017] Preferably, the pulping, bleaching and filtering are to break up and separate, bleach, filter, squeeze and dry the pulp after cooking into flaky pulp.

[0018] By adopting the above technical scheme, the quality and processability of hemp pulp are effectively improved by beating, bleaching, filtering, extruding and drying the pulp after cooking, and the fibers in the pulp can be further dispersed and homogenized, and its fluidity and refinement degree can be improved, thus creating a good raw material basis for the subsequent spinning process. The bleaching treatment effectively removes pigments, impurities and residual harmful substances in the pulp, ensuring the purity of the spinning solution and avoiding factors affecting the fiber quality and the appearance of the final product. The filtering and extrusion steps further remove insoluble impurities in the pulp, ensuring the uniformity and stability of the pulp.

[0019] Preferably, the waste wool is pretreated, and the wool is ultrasonically cleaned with a detergent to remove impurities on the fiber surface, and then rinsed with distilled water and dried. Then, 200 mL of a mixed solution of ethanol and acetone in a volume ratio of 1:1 is put into a Soxhlet extractor, and a certain amount of washed wool is extracted and degreased for 12 hours. After the extraction and degreasing is completed, the ethanol and acetone remaining on the wool are washed with distilled water. Dry at 50°C for 1 hour, repeat the washing and drying, and then stand for 12 hours to fully dry. After drying, the wool is crushed to a length of about 0.5 cm.

[0020] By adopting the above technical scheme, the waste wool is pretreated by ultrasonic cleaning and Soxhlet extraction, which effectively removes impurities and fat on the surface of the wool, optimizes the quality of the wool and subsequent functional processing, can efficiently remove dust, oil and other impurities on the surface of the wool, ensure the purity of the fiber, improve its biocompatibility and textile properties, and use a mixed solution of ethanol and acetone in the extraction and degreasing process to remove natural fats and oils in the wool, thereby improving the adsorption capacity and fiber strength of the wool and avoiding the influence of residual oil on the subsequent keratin solution preparation and spinning process. After multiple washing and drying, the wool fiber is further degreased and the solvent residue is removed, ensuring the safety and environmental protection of the product. The wool after the crushing process has a uniform particle size, which is convenient for mixing with the hemp viscose solution, enhancing the functionality and spinnability of the final composite fiber, and improving the uniform distribution of wool keratin in the composite fiber, so that the fiber has stronger antibacterial, anti-mite, antistatic and other multiple functions.

[0021] Preferably, the multifunctional wool keratin solution is prepared by weighing a certain amount of imidazole ionic liquid such as [AMIM]+·Cl- and heating it; when the temperature rises to 80°C, adding a small amount of wool each time until it is completely dissolved and then adding again; after the wool is completely dissolved, the temperature is kept constant, and a certain amount of graphene and anti-mite finishing agent are added in sequence and mixed evenly to obtain a wool keratin functional solution.

[0022] By adopting the above technical scheme, by using imidazole ionic liquid [AMIM] +·Cl- to dissolve wool keratin and adding graphene and anti-mite finishing agent, the efficient preparation of wool keratin multifunctional solution is achieved, and the solution is given unique functionality. The imidazole ionic liquid is used as a solvent to efficiently dissolve wool keratin and maintain its biological activity, while avoiding the damage of traditional solvents to the protein structure. The addition of graphene gives the solution conductivity, enhances the strength and durability of the fiber, and improves the antibacterial property; the anti-mite finishing agent effectively enhances the anti-mite and antibacterial properties of the wool fiber, so that the final fiber has lasting anti-mite and antibacterial functions, which not only improves the comprehensive performance of the wool, but also improves the softness, comfort and durability of the final fiber, providing multiple additional functions for textiles.

[0023] Preferably, the hemp-keratin composite spinning solution is prepared by subjecting the prepared hemp pulp to viscose treatment and degassing to obtain the hemp viscose spinning solution; the hemp viscose spinning solution and the wool keratin functional solution are mixed in an appropriate proportion and stirred evenly.

[0024] By adopting the above technical scheme, after the hemp pulp is treated with viscose and degassed, the obtained hemp viscose spinning solution is mixed with the wool keratin functional solution in an appropriate proportion, thereby realizing the preparation of hemp-keratin composite spinning solution, which effectively combines the natural antibacterial and breathable properties of hemp fiber with the biocompatibility, antibacterial and antistatic functions of wool keratin, giving the final fiber composite multiple excellent properties. The hemp viscose spinning solution removes bubbles through the degassing process, which improves the stability and uniformity of the spinning solution and ensures the smoothness of the spinning process. The introduction of wool keratin not only enhances the antibacterial and antistatic properties of the fiber, but also improves the softness and comfort of the fiber, forming a composite fiber with high strength, durability and strong functionality during the wet spinning process.

[0025] Preferably, the wet spinning method for preparing hemp viscose-keratin composite fibers is to subject the hemp-keratin composite spinning solution to an acid bath and a drawing bath, and then coagulate and regenerate the hemp viscose-keratin composite fibers;

[0026] The hemp viscose-keratin composite fiber is blended with fine wool in a certain proportion, and 10%-30% of the hemp viscose-keratin composite fiber is blended with 70%-90% of the fine wool to obtain a blended yarn.

[0027] By adopting the above technical scheme, hemp viscose-keratin composite fibers are prepared by wet spinning and blended with fine wool in appropriate proportions to achieve composite yarns with excellent functionality and comfort. During the wet spinning process, the composite spinning solution is subjected to acid bath, drawing bath and coagulation regeneration treatment to ensure the high strength and stability of the fiber while maintaining the functional properties of hemp viscose and keratin. The blending ratio of hemp viscose-keratin composite fibers and fine wool (10%-30% composite fibers and 70%-90% wool) optimizes the softness, warmth retention and hygroscopicity of the yarn, so that the final yarn increases the durability and functionality of the composite fiber while maintaining the natural comfort of wool. Through this blending, the yarn not only has excellent antibacterial, antistatic and anti-mite functions, but also improves its environmental protection and sustainability.

[0028] In the second aspect, the present application provides a multifunctional hemp viscose composite yarn that is antibacterial, anti-mite and antistatic, and adopts the following technical solution:

[0029] A multifunctional hemp-viscose composite yarn with antibacterial, anti-mite and antistatic properties, wherein the hemp-viscose composite yarn is produced by the method of claims 1 to 9.

[0030] By adopting the above technical scheme, the antibacterial, anti-mite and anti-static multifunctional hemp-viscose composite yarn prepared by adopting the above technical scheme has a variety of excellent technical functions. The natural antibacterial properties of hemp fiber are combined with the spinnability of viscose, so that the composite yarn has excellent antibacterial effect, effectively inhibits the growth of bacteria and microorganisms, and improves the hygiene of the fabric. The introduction of keratin enhances the biocompatibility and antistatic properties of the fiber, which can effectively reduce static electricity accumulation, prevent clothing from absorbing dust and hair, and improve wearing comfort. The blending of wool improves the softness and warmth of the yarn, enhances the moisture absorption and breathability of the fiber, and adapts to the wearing needs under various environmental conditions. It has good anti-mite function and effectively prevents the breeding of mites. It is suitable for clothing and bedding for people with sensitive skin.

[0031] In summary, the present application includes at least one of the following beneficial technical effects:

[0032] 1. The yarn has a long-lasting antibacterial and anti-mite effect, which can effectively prevent the growth of microorganisms such as bacteria and mites around the product and keep the environment around the human body clean and hygienic;

[0033] 2. The yarn has good antistatic properties. Shirts, pants, underwear, socks, towels, pillowcases and other products woven with it as raw material are soft and comfortable, skin-friendly and breathable, and no static electricity occurs;

[0034] 3. Recycling and high-value utilization of hemp stalk cores and waste wool has the significance of ecological protection and green sustainable development. BRIEF DESCRIPTION OF THE DRAWINGS

[0035] Figure 1 The invention provides a production method for the multifunctional hemp-viscose composite yarn with antibacterial, anti-mite and antistatic properties;

[0036] Figure 2 The invention provides a method for preparing the wool keratin functional solution;

[0037] Figure 3 The final use of the multifunctional hemp viscose composite yarn with antibacterial, anti-mite and antistatic properties of the present invention is shown in FIG. Figure 1 ;

[0038] Figure 4 The final use of the multifunctional hemp viscose composite yarn with antibacterial, anti-mite and antistatic properties of the present invention is shown in FIG. Figure 2 ;

[0039] Figure 5 The final use of the multifunctional hemp viscose composite yarn with antibacterial, anti-mite and antistatic properties of the present invention is shown in FIG. Figure 3 . DETAILED DESCRIPTION

[0040] The following is combined with Figure 1-5 This application is described in further detail.

[0041] The present application discloses a method for producing a multifunctional hemp-viscose composite yarn that is antibacterial, anti-mite and antistatic. Figure 1The production method of the antibacterial, anti-mite and antistatic multifunctional hemp viscose composite yarn is as follows: using hemp stalk core as raw material for pretreatment, prehydrolysis, cooking, beating, bleaching and filtering to obtain hemp pulp; then using the conventional viscose fiber preparation process method to impregnate, age, sulfonate, dissolve, and mature the hemp pulp to obtain hemp viscose spinning liquid; pretreating waste wool to prepare a wool keratin multifunctional solution, mixing the hemp viscose spinning liquid with the prepared wool keratin functional solution in a certain proportion to obtain a hemp-keratin composite spinning liquid, and preparing hemp viscose-keratin composite fibers by wet spinning; finally, blending the hemp viscose-keratin composite fibers with fine wool in a certain proportion to obtain hemp viscose-wool composite yarns; using hemp stalk core as raw material, through pretreatment, prehydrolysis, cooking, beating, bleaching and filtering to obtain hemp pulp; then using the conventional viscose fiber preparation process method to impregnate, age, sulfonate, dissolve, and mature the hemp pulp to obtain a hemp viscose spinning liquid; pretreating waste wool to prepare a wool keratin multifunctional solution, mixing the hemp viscose spinning liquid with the prepared wool keratin functional solution in a certain proportion to obtain a hemp-keratin composite spinning liquid, and preparing hemp viscose-keratin composite fibers by wet spinning. The hemp pulp obtained through the steps of decomposition, cooking, beating, bleaching and filtering ensures the purity of the raw materials and the spinnability of the fiber. Then, the conventional preparation process of viscose fiber is used to treat the hemp pulp to obtain the hemp viscose spinning solution, which is combined with the wool keratin multifunctional solution to obtain the hemp-keratin composite fiber through wet spinning technology. This not only enhances the antibacterial and antistatic properties of the fiber, but also improves the softness, comfort and biodegradability of the fiber. In addition, through blending with fine wool, the hygroscopicity, air permeability and warmth retention of the composite yarn are further optimized, and the durability and wearing experience of the final yarn are improved, so that the yarn has the function of antibacterial and anti-mite, effectively inhibiting the breeding of bacteria and mites, and protecting the health of the wearer. The antistatic function reduces the accumulation of static electricity, avoids dust adhesion, and makes the textiles cleaner and more comfortable.

[0042] The hemp stalk core is used as raw material for pretreatment. After the hemp skin and stalk are separated, the hemp stalk core is cut into a length of 2-3 cm, and then pre-wetted by spraying water on a screen. After the hemp skin and stalk are separated, the hemp stalk core is cut into a length of 23 cm to ensure the consistency and suitable spinnability of the fiber, avoid the processing difficulty caused by too long or too short fibers, and ensure the uniformity and fluidity of the fiber in subsequent processes. The screen water spraying pre-wetting process helps to soften and hydrate the fiber, making it easier to disperse and break up, thereby enhancing the wettability of the fiber and laying a good foundation for the subsequent hydrolysis, cooking and spinning processes.

[0043] The pre-hydrolysis is to put the pre-treated hemp stalk core and an appropriate amount of water into a cooking tank, and then boil it after multiple stages of heating and exhaust. The cooking is to add a certain amount of sodium hydroxide, sodium sulfide and other additives in the cooking tank to remove lignin and hemicellulose in the hemp stalk core. The pulping, bleaching and filtering are to break up, separate, bleach, filter, squeeze and dry the pulp after cooking into flaky pulp. The hemp pulp is prepared by using the hemp stalk core as raw material through the steps of pretreatment, pre-hydrolysis, cooking, pulping, bleaching and filtering, which ensures the purity of the raw material and the spinnability of the fiber. The hemp pulp is treated by using the conventional viscose fiber preparation process. The hemp viscose spinning liquid obtained after treatment is combined with the wool keratin multifunctional solution to produce hemp-keratin composite fiber through wet spinning technology. It not only enhances the antibacterial and antistatic properties of the fiber, but also improves the softness, comfort and biodegradability of the fiber. In addition, through blending with fine wool, the hygroscopicity, air permeability and warmth retention of the composite yarn are further optimized, and the durability and wearing experience of the final yarn are improved. The yarn has antibacterial and anti-mite functions, which effectively inhibits the breeding of bacteria and mites and protects the health of the wearer. The antistatic function reduces static electricity accumulation, avoids dust adhesion, and makes textiles cleaner and more comfortable.

[0044] Pre-treat the waste wool by using detergent to ultrasonically clean the wool to remove impurities on the fiber surface, then rinse with distilled water and dry. Then take 200 mL of a mixed solution of ethanol and acetone with a volume ratio of 1:1 and put it into a Soxhlet extractor to extract and degrease a certain amount of washed wool for 12 hours. After the extraction and degreasing is completed, wash the residual ethanol and acetone on the wool with distilled water. Dry at 50℃ for 1 hour, repeat the washing and drying, and then let it stand for 12 hours to fully dry. After drying, the wool is crushed to a length of about 0.5 cm. Ultrasonic cleaning with detergent can effectively remove impurities and grease on the surface of the wool and improve the purity of the wool. Ultrasonic cleaning can decompose dust, dirt and oil on the surface of wool fibers through high-frequency vibration to ensure thorough cleaning and reduce mechanical damage. Rinse and dry with distilled water to remove residual detergent and moisture to ensure the cleanliness and dryness of the wool. During the degreasing process, a mixed solution of ethanol and acetone is used to extract the wool for a long time through a Soxhlet extractor, which can effectively remove natural oils and other insoluble substances in the wool and provide an ideal matrix for subsequent keratin dissolution. The residual solvent is washed with distilled water and dried at 50°C to ensure that the wool is completely dried and harmful solvents are removed. Finally, the dried wool is crushed to a length of about 0.5 cm to make it easier to mix with other ingredients, ensuring uniformity in subsequent processes and efficient use of fibers.

[0045] Wool keratin multifunctional solution, weigh a certain amount of imidazole ionic liquid such as [AMIM]

[0046] +·Cl- and heat; when the temperature rises to 80℃, add a small amount of wool each time until it is completely dissolved and add again. After the wool is completely dissolved, keep the temperature constant, add a certain amount of graphene and anti-mite finishing agent in turn and mix them evenly to obtain a wool keratin functional solution and a hemp-keratin composite spinning solution. The prepared hemp pulp is treated with viscose and defoamed to obtain a hemp viscose spinning solution; the hemp viscose spinning solution and the wool keratin functional solution are mixed in an appropriate proportion and stirred evenly. The wool is dissolved by heating the imidazole ionic liquid [AMIM]+·Cl- to form a wool keratin multifunctional solution, which can effectively extract keratin from the wool and maintain its biological activity. At 80℃, the wool is gradually added and allowed to Complete dissolution ensures the efficient solubility and stability of wool keratin, and then graphene and anti-mite finishing agent are added to further enhance the functionality of the solution. Graphene can enhance the mechanical strength and conductive properties of the fiber, while the anti-mite finishing agent gives the solution anti-mite and anti-bacterial functions, thereby improving the antibacterial and anti-mite properties of the fiber. The prepared hemp pulp is treated with viscose and degassed to obtain hemp viscose spinning solution, which is then mixed with wool keratin functional solution in appropriate proportions to achieve an organic combination of two different materials to form a spinning solution with composite properties, which not only maintains the natural antibacterial and antistatic properties of hemp fiber, but also gives it the softness and anti-mite function of wool keratin, ultimately improving the antibacterial, antistatic, anti-mite and other multiple functionalities of the composite fiber.

[0047] The hemp viscose-keratin composite fiber is prepared by wet spinning, that is, the hemp-keratin composite spinning solution is subjected to an acid bath, a drawing bath, and coagulation and regeneration to obtain the hemp viscose-keratin composite fiber; the hemp viscose-keratin composite fiber is blended with fine wool in a certain proportion, and 10%-30% of the hemp viscose-keratin composite fiber is blended with 70%-90% of the fine wool to obtain a blended yarn, and the hemp viscose-keratin composite fiber is prepared by wet spinning, and the spinning solution is rapidly coagulated in a liquid state through an acid bath, a drawing bath and a coagulation and regeneration process to form a stable fiber structure, which can ensure the good shape, strength and uniformity of the composite fiber, and provide high-quality raw materials for subsequent textile processing. Hemp viscose-keratin composite fiber is blended with fine wool in a certain proportion, combining 10%-30% of the composite fiber with 70%-90% of the fine wool. It not only enhances the antibacterial, antistatic, anti-mite and other functionalities of the yarn, but also gives the yarn better elasticity, softness and comfort. The blended yarn has both the natural strength of hemp fiber and the softness and comfort of wool. At the same time, the addition of keratin improves the health care function of the fiber, which is especially suitable for the production of high-performance and functional fabrics.

[0048] Reference Figure 2As shown, the wool keratin functional solution added to the hemp viscose spinning solution is obtained by adding graphene and anti-mite finishing agent to the waste wool after pretreatment and dissolution with ionic liquid. The solution has the properties of hydrophilicity, conductivity, antibacterial and anti-mite, and spinnability. It can be blended with other types of spinning solutions to prepare functional fibers. The wool keratin functional solution prepared by adding graphene and anti-mite finishing agent to the waste wool after pretreatment and dissolution with ionic liquid gives the solution a variety of excellent properties. First, the wool keratin maintains its natural biological activity during the dissolution process, making it have excellent hydrophilicity, which is essential for improving the hygroscopicity and comfort of the fiber; secondly, the added graphene gives the solution conductive properties, so that the final fiber can be used in the field of smart textiles or electronic textiles; the anti-mite finishing agent effectively enhances the antibacterial and anti-mite ability of the fiber and improves the health care performance of the fiber; because the solution is spinnable, it can be blended with other types of spinning solutions, thereby maintaining the characteristics of the raw materials while realizing the preparation of multifunctional composite fibers.

[0049] Reference Figure 3-Figure 5 As shown, the antibacterial, anti-mite and antistatic multifunctional hemp viscose-composite yarn produced can be used to further produce underwear, socks, towels and other textiles. The antibacterial, anti-mite and antistatic multifunctional hemp viscose-composite yarn produced has multiple functions such as antibacterial, anti-mite and anti-static, and is particularly suitable for the production of underwear, socks, towels and other textiles. These textiles require good hygiene, comfort and durability. Underwear made of the composite yarn can effectively inhibit the growth of bacteria, keep fresh and dry, and reduce skin allergies or discomfort; socks can effectively prevent foot odor, bacterial infection and tinea pedis and other problems, and improve the comfort and health of wearing; towels made of the yarn not only have antibacterial and anti-mite effects, but also can reduce static electricity to absorb dust, keep towels clean and hygienic, and extend service life; in addition, the antistatic properties of the fiber can also improve the anti-pollution property of textiles, making these daily necessities more durable, hygienic and comfortable. The suitability and matching degree of use are as follows

[0050] As shown in Table 1:

[0051]

[0052]

[0053] The implementation principle of the embodiment of the present application is a multifunctional hemp-viscose composite yarn with antibacterial, anti-mite and antistatic properties, as well as a processing method and use, as follows: the hemp stalk core is subjected to the steps of pretreatment, prehydrolysis, cooking, pulping, bleaching and filtration to obtain high-purity hemp pulp, and then the hemp viscose spinning solution is prepared by the conventional viscose fiber process; the waste wool is pretreated and dissolved with an imidazole ionic liquid, and graphene and an anti-mite finishing agent are added to prepare a wool keratin multifunctional solution, and then the hemp viscose spinning solution is mixed with the wool keratin solution, and the hemp-keratin composite fiber is obtained by wet spinning technology, and finally the multifunctional composite yarn is prepared by blending with fine wool in proportion; the yarn has multiple functions such as antibacterial, anti-mite and anti-static, can effectively inhibit the breeding of bacteria and mites, avoid static electricity accumulation, and improve wearing comfort and the hygienic properties of textiles.

[0054] The technical advantages of the antibacterial, anti-mite and antistatic multifunctional hemp viscose composite yarn and the processing method and use of the embodiment of the present application are:

[0055] 1. Antibacterial and anti-mite performance: By compounding the anti-mite finishing agent and antibacterial components in the wool keratin functional solution with hemp fiber, the yarn has strong antibacterial and anti-mite functions, which can effectively inhibit the breeding of bacteria and mites and protect the health of the wearer. It is especially suitable for the production of underwear, socks, towels and other close-fitting textiles.

[0056] 2. Antistatic performance: The addition of graphene materials makes the fiber have good conductivity, effectively reduces static electricity accumulation, avoids dust adhesion, keeps the textiles clean, and enhances their durability. It is especially suitable for daily wear clothing, household items, etc.

[0057] 3. Fiber softness and comfort: By blending with fine wool, the yarn is given better elasticity and softness, which improves the comfort of the textile and increases the pleasant wearing experience. The natural warmth retention of wool is combined with the antibacterial properties of hemp fiber, making the textile more refreshing and comfortable while maintaining warmth.

[0058] 4. Biodegradability and environmental friendliness: The hemp fiber used is natural and biodegradable. Combined with wool keratin and natural plant-based anti-mite finishing agents, the yarn not only has multiple functions, but is also environmentally friendly and sustainable, helping to reduce the burden on the environment.

[0059] 5. Wet spinning technology: Through the wet spinning process, hemp viscose-keratin composite fiber is blended with fine wool in proportion to ensure the uniformity, strength and durability of the yarn. The wet spinning process can effectively maintain the natural characteristics of the fiber and make the yarn have excellent performance, which is suitable for the production of high-performance fabrics.

[0060] 6. Process optimization: From the pretreatment, prehydrolysis and cooking of hemp stalk core to the pretreatment and degreasing of wool, and then to the preparation of spinning solution and wet spinning, the entire production process is highly integrated and optimized, ensuring the efficient production and high quality stability of the product.

[0061] 7. Wide application: This composite yarn can be widely used in the production of various textiles, especially underwear, socks, bedding, towels, etc. that require high-performance functionality and comfort, meeting the multiple needs of modern consumers for health, comfort, environmental protection and durability.

[0062] The above are all preferred embodiments of the present application, and the protection scope of the present application is not limited thereto. Therefore, any equivalent changes made according to the structure, shape, and principle of the present application should be included in the protection scope of the present application.

Claims

1. A method for processing antibacterial, anti-mite and antistatic multifunctional hemp viscose composite yarn, characterized in that: The method includes taking hemp stalk core as raw material and performing pretreatment, prehydrolysis, cooking, pulping, bleaching and filtering to obtain hemp pulp; Then, the hemp pulp is impregnated, aged, sulfonated, dissolved, and matured by a conventional viscose fiber preparation process to obtain a hemp viscose spinning solution; waste wool is pretreated to prepare a wool keratin multifunctional solution, the hemp viscose spinning solution and the prepared wool keratin functional solution are mixed in a certain proportion to obtain a hemp-keratin composite spinning solution, and hemp viscose-keratin composite fibers are prepared by wet spinning; Finally, the hemp viscose-keratin composite fiber is blended with fine wool in a certain proportion to obtain the hemp viscose-wool composite yarn.

2. The processing method of the antibacterial, anti-mite and antistatic multifunctional hemp-viscose composite yarn according to claim 1, characterized in that: The pretreatment of the hemp stalk core as raw material is to separate the hemp skin from the stalk, cut the hemp stalk core to a length of 2 to 3 cm, and then spray water through a screen to pre-wet it.

3. The processing method of the antibacterial, anti-mite and antistatic multifunctional hemp viscose composite yarn according to claim 1 is characterized in that: The pre-hydrolysis is to put the pre-treated hemp stalk core and a proper amount of water into a cooking tank, and then boil it after multiple stages of heating and exhaust.

4. The method for processing the antibacterial, anti-mite and antistatic multifunctional hemp-viscose composite yarn according to claim 1, characterized in that: The cooking process is to add a certain amount of sodium hydroxide, sodium sulfide and other additives into a cooking tank to remove lignin and hemicellulose from the hemp stalk core.

5. The processing method of the antibacterial, anti-mite and antistatic multifunctional hemp viscose composite yarn according to claim 1 is characterized in that: The pulping, bleaching and filtering are to break up and separate, bleach, filter, squeeze and dry the pulp after cooking into flaky pulp.

6. The method for processing the antibacterial, anti-mite and antistatic multifunctional hemp-viscose composite yarn according to claim 1, characterized in that: The waste wool is pretreated by ultrasonically cleaning the wool with detergent to remove impurities on the fiber surface, and then rinsed with distilled water and dried. Then, 200 mL of a mixed solution of ethanol and acetone with a volume ratio of 1:1 is put into a Soxhlet extractor, and a certain amount of washed wool is extracted and degreased for 12 hours. After the extraction and degreasing is completed, the residual ethanol and acetone on the wool are washed with distilled water. Dry at 50°C for 1 hour, repeat the washing and drying, and then stand for 12 hours to fully dry. After drying, the wool is crushed to a length of about 0.5 cm.

7. The method for processing the antibacterial, anti-mite and antistatic multifunctional hemp-viscose composite yarn according to claim 1, characterized in that: The multifunctional wool keratin solution is prepared by weighing a certain amount of imidazole ionic liquid such as [AMIM]+·Cl- and heating it; when the temperature rises to 80°C, adding a small amount of wool each time until it is completely dissolved and then adding again; after the wool is completely dissolved, the temperature is kept constant, and a certain amount of graphene and anti-mite finishing agent are added in sequence and mixed evenly to obtain a wool keratin functional solution.

8. The method for processing the antibacterial, anti-mite and antistatic multifunctional hemp-viscose composite yarn according to claim 1, characterized in that: The hemp-keratin composite spinning solution is prepared by subjecting the prepared hemp pulp to viscose treatment and degassing to obtain the hemp viscose spinning solution; the hemp viscose spinning solution and the wool keratin functional solution are mixed in an appropriate proportion and stirred evenly.

9. The method for processing the antibacterial, anti-mite and antistatic multifunctional hemp-viscose composite yarn according to claim 1, characterized in that: The wet spinning method for preparing hemp viscose-keratin composite fibers is to subject the hemp-keratin composite spinning solution to an acid bath and a drawing bath, and then coagulate and regenerate the hemp viscose-keratin composite fibers; The hemp viscose-keratin composite fiber is blended with fine wool in a certain proportion, and 10%-30% of the hemp viscose-keratin composite fiber is blended with 70%-90% of the fine wool to obtain a blended yarn.

10. A multifunctional hemp-viscose composite yarn with antibacterial, anti-mite and antistatic properties, characterized by: The hemp-viscosity composite yarn is produced by the method of claims 1-9.

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