CN112481760B - Antibacterial and antifouling organic cotton and kapok blended yarn and preparation method thereof - Google Patents
Antibacterial and antifouling organic cotton and kapok blended yarn and preparation method thereof Download PDFInfo
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- D—TEXTILES; PAPER
- D02—YARNS; MECHANICAL FINISHING OF YARNS OR ROPES; WARPING OR BEAMING
- D02G—CRIMPING OR CURLING FIBRES, FILAMENTS, THREADS, OR YARNS; YARNS OR THREADS
- D02G3/00—Yarns or threads, e.g. fancy yarns; Processes or apparatus for the production thereof, not otherwise provided for
- D02G3/02—Yarns or threads characterised by the material or by the materials from which they are made
- D02G3/04—Blended or other yarns or threads containing components made from different materials
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- D—TEXTILES; PAPER
- D01—NATURAL OR MAN-MADE THREADS OR FIBRES; SPINNING
- D01F—CHEMICAL FEATURES IN THE MANUFACTURE OF ARTIFICIAL FILAMENTS, THREADS, FIBRES, BRISTLES OR RIBBONS; APPARATUS SPECIALLY ADAPTED FOR THE MANUFACTURE OF CARBON FILAMENTS
- D01F1/00—General methods for the manufacture of artificial filaments or the like
- D01F1/02—Addition of substances to the spinning solution or to the melt
- D01F1/10—Other agents for modifying properties
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- D—TEXTILES; PAPER
- D01—NATURAL OR MAN-MADE THREADS OR FIBRES; SPINNING
- D01F—CHEMICAL FEATURES IN THE MANUFACTURE OF ARTIFICIAL FILAMENTS, THREADS, FIBRES, BRISTLES OR RIBBONS; APPARATUS SPECIALLY ADAPTED FOR THE MANUFACTURE OF CARBON FILAMENTS
- D01F2/00—Monocomponent artificial filaments or the like of cellulose or cellulose derivatives; Manufacture thereof
- D01F2/06—Monocomponent artificial filaments or the like of cellulose or cellulose derivatives; Manufacture thereof from viscose
- D01F2/08—Composition of the spinning solution or the bath
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- D—TEXTILES; PAPER
- D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
- D06M—TREATMENT, NOT PROVIDED FOR ELSEWHERE IN CLASS D06, OF FIBRES, THREADS, YARNS, FABRICS, FEATHERS OR FIBROUS GOODS MADE FROM SUCH MATERIALS
- D06M15/00—Treating fibres, threads, yarns, fabrics, or fibrous goods made from such materials, with macromolecular compounds; Such treatment combined with mechanical treatment
- D06M15/19—Treating fibres, threads, yarns, fabrics, or fibrous goods made from such materials, with macromolecular compounds; Such treatment combined with mechanical treatment with synthetic macromolecular compounds
- D06M15/37—Macromolecular compounds obtained otherwise than by reactions only involving carbon-to-carbon unsaturated bonds
- D06M15/643—Macromolecular compounds obtained otherwise than by reactions only involving carbon-to-carbon unsaturated bonds containing silicon in the main chain
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- D—TEXTILES; PAPER
- D10—INDEXING SCHEME ASSOCIATED WITH SUBLASSES OF SECTION D, RELATING TO TEXTILES
- D10B—INDEXING SCHEME ASSOCIATED WITH SUBLASSES OF SECTION D, RELATING TO TEXTILES
- D10B2201/00—Cellulose-based fibres, e.g. vegetable fibres
- D10B2201/01—Natural vegetable fibres
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- D—TEXTILES; PAPER
- D10—INDEXING SCHEME ASSOCIATED WITH SUBLASSES OF SECTION D, RELATING TO TEXTILES
- D10B—INDEXING SCHEME ASSOCIATED WITH SUBLASSES OF SECTION D, RELATING TO TEXTILES
- D10B2201/00—Cellulose-based fibres, e.g. vegetable fibres
- D10B2201/01—Natural vegetable fibres
- D10B2201/02—Cotton
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- D—TEXTILES; PAPER
- D10—INDEXING SCHEME ASSOCIATED WITH SUBLASSES OF SECTION D, RELATING TO TEXTILES
- D10B—INDEXING SCHEME ASSOCIATED WITH SUBLASSES OF SECTION D, RELATING TO TEXTILES
- D10B2201/00—Cellulose-based fibres, e.g. vegetable fibres
- D10B2201/20—Cellulose-derived artificial fibres
- D10B2201/22—Cellulose-derived artificial fibres made from cellulose solutions
- D10B2201/24—Viscose
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Abstract
The invention discloses an antibacterial and antifouling organic cotton and kapok blended yarn and a preparation method thereof. The method comprises the steps of loading nano zinc oxide on graphene, mixing the nano zinc oxide with viscose fiber spinning solution to prepare viscose fiber, loading a natural anti-mite agent on the viscose fiber through low pressure, drawing the viscose fiber and aloe fiber to obtain a modified kapok fiber core layer, and coating the modified kapok fiber core layer by using kapok fiber to obtain modified kapok fiber; preparing organic cotton and kapok yarns by a siro spinning process, and soaking the organic cotton and kapok yarns in a water-repellent and oil-repellent finishing agent containing organic silicon to obtain the organic cotton and kapok blended yarns with antifouling, water-proof, long-acting bacteriostasis and mite prevention functions; meanwhile, the natural anti-mite agent used in the invention has safe and harmless components, less skin irritation and good anti-mite effect; the modified graphene composite material is wrapped in the modified kapok fiber, so that the prepared organic cotton and kapok fiber is more resistant to washing and longer in service life.
Description
Technical Field
The invention relates to the technical field of blended yarns, in particular to an antibacterial and antifouling organic cotton and kapok blended yarn and a preparation method thereof.
Background
With the development of economy and the improvement of living standard, people select more and more textile materials, but in a plurality of textile fiber materials, people do not decrease the degree of love to natural fibers such as cotton, hemp, tencel and other fibers, but many natural fibers have the defects of easy deformation, no antibacterial property, easy shrinkage after cleaning and the like, have stronger hydrophilicity, are easy to adsorb oil stains, sweat stains, water stains and other stains, and greatly reduce the use experience of consumers.
Besides the above-mentioned properties, many natural fibers also have poor anti-mite properties; the acarid is a tiny arthropod which is difficult to be directly observed by naked eyes, is mainly inhabited in textiles such as clothes, bedding, sofas, carpets and the like, is eaten by dander tissues metabolized by human bodies, does not carry viruses, but can transmit pathogenic bacteria, the pathogenic bacteria can cause harm to the human bodies through the skin, respiratory tract and digestive system of the human bodies, and metabolites of the pathogenic bacteria can cause diseases such as allergy, asthma, infantile eczema and the like; many efforts are made to reduce the parasitic of mites on textiles, and the most common preparation methods of mite-proof fabrics include a fabric post-finishing method, a functional fiber method and a high-density weaving method; the anti-mite substance is directly added into the finishing agent to carry out dip finishing on the fabric, the adhesion capability of the anti-mite medicament on the surface of the fabric is insufficient, the anti-mite medicament is easy to run off after washing, so that the fabric loses the anti-mite performance, and a lot of organic medicaments exist in the anti-mite agent, so that the anti-mite medicament is easy to volatilize and decompose in the finishing process, and the anti-mite effect of the fabric is reduced; in order to solve the problems, people begin to prepare microencapsulated anti-mite microcapsules, wrap an anti-mite agent in the anti-mite microcapsules and then fix the anti-mite microcapsules on fabrics, the anti-mite agent of the anti-mite fabrics prepared by the method is not easy to run off in the washing process, and the anti-mite microcapsules have the slow release capacity so that the anti-mite effect is long-acting and stable; however, the microcapsule wall used for wrapping the anti-mite agent is generally composed of polymers such as urea-formaldehyde resin, polyurethane resin, polyamide and the like, harmful gas generated in the preparation process is large, the strength of the microcapsule is not high, the microcapsule is easy to break in daily washing and use of the anti-mite fabric, the medicine is directly released, and the long-acting anti-mite effect is difficult to achieve.
The kapok fiber contains a large amount of lignin and has a natural antibacterial effect, but the kapok fiber is not resistant to mold and worm damage, has the characteristics of oil absorption and water repellency, is easy to generate oil stains, is low in strength and poor in elasticity, is difficult to spin independently, and limits the application of the kapok fiber; the organic cotton is pure natural pollution-free cotton, has bright color, soft hand feeling and excellent rebound resilience, but has stronger hydrophilicity, and is easy to absorb stains such as sweat stains, oil stains and the like;
in order to solve the problems, an organic cotton and kapok blended yarn with excellent long-acting antibacterial, anti-mite and anti-fouling capabilities and a preparation process thereof are needed.
Disclosure of Invention
The invention aims to provide an antibacterial and antifouling organic cotton and kapok blended yarn and a preparation method thereof, so as to solve the problems in the background technology.
An antibacterial and antifouling organic cotton and kapok blended yarn comprises the following raw material components: 60-180 parts of modified kapok fiber, 50-100 parts of modified organic cotton fiber and 80-120 parts of antifouling finishing agent.
Further, the modified kapok fiber comprises the following raw material components, by weight, 30-40 parts of a modified graphene composite material, 90-100 parts of a viscose spinning solution, 20-26 parts of a natural anti-mite agent, 75-85 parts of aloe fiber and 120-140 parts of kapok fiber.
Further, the modified graphene composite material comprises the following raw material components: by weight, 20-40 parts of hexamethylenetetramine, 25-35 parts of zinc nitrate, 10-20 parts of sodium citrate, 15-25 parts of graphene, 10-14 parts of concentrated nitric acid, 18-24 parts of a first silane coupling agent, 20-30 parts of methacrylic acid, 20-30 parts of sodium bisulfite and 10-20 parts of an initiator; the graphene is a phosphorus flake graphene, and the initiator is ammonium persulfate.
According to the invention, firstly, zinc nitrate and citric acid react to generate nano zinc oxide, the nano zinc oxide has a hollow structure inside, the surface of the nano zinc oxide also has rich pores, and the nano zinc oxide is very suitable for being used as a container for storing natural mite-proof liquid, and the pores on the surface of the nano zinc oxide can continuously emit natural mite-proof agents, so that the fabric can achieve the effect of long-term mite prevention and inhibition; compared with the traditional mite-resistant agent microcapsule, the mite-resistant agent microcapsule taking the nano zinc oxide as the wall material is firmer, is not easy to break, has small irritation to skin and good slow release effect of the mite-resistant agent; meanwhile, the nano zinc oxide has certain photocatalysis and sterilization capability, has natural antibacterial and sterilization effects, is stable in property, avoids the additional addition of chemical bactericides, cannot cause the problems of sensitization and volatilization of the chemical bactericides caused by the chemical bactericides, and is more durable in antibacterial and bacteriostatic effects.
The graphene has rich active sites, strong attraction and large specific surface area, and also has certain bactericidal performance; the graphite in the invention expands under the action of concentrated nitric acid, the expanded graphene is mixed with nano zinc oxide, and under the condition of high-frequency ultrasonic dispersion, the nano zinc oxide is attracted by active groups on the expanded graphene and is further successfully embedded into a graphene sheet layer; the interlayer distance between graphene sheets can be effectively increased under the high-frequency ultrasonic dispersion condition, and a space is provided for embedding of the nano zinc oxide; the graphene is hard in texture, and can further protect the nano zinc oxide; the graphene has rich active functional groups such as hydroxyl, carboxyl, amino and the like, and can react with active hydroxyl in viscose fiber spinning solution to form a stable network so as to enhance the mechanical property of viscose fiber; the preparation method comprises the following steps of adding a first silane coupling agent into the powder C, wherein the first silane coupling agent is hydrolyzed in water to generate free ethoxy, the ethoxy is condensed with hydroxyl on the powder C to generate double bonds, and the double bonds are subjected to free radical polymerization under the action of methacrylic acid, so that a large amount of carboxyl is successfully grafted on the surface of the powder C to generate a modified graphene composite material; the modified graphene composite material effectively avoids the occurrence of the agglomeration phenomenon of nano materials, and has good dispersibility, compatibility and antibacterial property in viscose spinning solution; due to the fact that the nano zinc oxide is insufficient in adsorption capacity of the natural mite-proofing agent, the strong adsorption capacity of the graphene is utilized, and the loading capacity of the natural mite-proofing agent in the modified graphene composite material can be increased as much as possible under the condition of being held in a low-pressure environment.
The natural anti-mite agent is one of cypress essential oil, eucalyptus essential oil, wormwood essential oil and borneol.
Further, the kapok fiber is activated kapok fiber with phenolic hydroxyl on the surface.
The kapok fiber contains a large amount of groups such as phenolic hydroxyl, conjugated double bonds, alcoholic hydroxyl and the like, and also contains a certain amount of methoxyl. The method utilizes sodium hydrosulfide and sodium sulfite to convert part of methoxyl groups in the kapok fiber into phenolic hydroxyl groups, thereby increasing the number of active sites on the kapok fiber; the modified kapok fiber core layer can enable the kapok fiber and the modified kapok fiber core layer to be combined smoothly through esterification reaction due to the existence of a large number of carboxyl groups, the modified graphene composite material is wrapped in the modified kapok fiber, the loss of the modified graphene composite material in the washing and friction processes of the fabric made of the organic cotton and kapok blended yarns is reduced, and the modified kapok fiber core layer and the activated kapok fiber are bonded through chemical bonds, so that the slow release effect of a natural anti-mite agent in the modified graphene composite material cannot be influenced.
Further, the antifouling finishing agent comprises the following raw material components: by weight, 30-50 parts of organic silicon, 10-14 parts of a second silane coupling agent, 8-10 parts of protein molecules, 15-20 parts of lithium hydroxide, 0-14 parts of tween 801and 20-30 parts of an emulsifier.
The organic silicon is one or more of polydimethyldimethoxysilane and polymethylvinyl silicone resin.
Further, the first silane coupling agent is one or more of A150, A151 and A171; the second silane coupling agent is one or more of HD-110 and HD-109; the protein molecules are one or more of soybean protein, fibroin and milk protein.
Further, the modified organic cotton fiber comprises the following raw material components, by weight, 80-100 parts of organic cotton fiber, 20-40 parts of triethylene tetramine and 10-20 parts of sodium hydroxide;
according to the method, a small amount of lithium chloride and N, N-dimethylformamide are used for activating the surface of the organic cotton fiber, so that part of hydrogen bonds on the surface of the organic cotton fiber are destroyed and converted into active hydroxyl groups, the active hydroxyl groups react with triethylene tetramine, amino groups are successfully grafted on the surface of the kapok fiber, the modified organic cotton fiber is obtained, the amino groups on the modified organic cotton fiber and phenolic hydroxyl groups on the modified kapok fiber are subjected to dehydration condensation, and the binding force between the modified organic cotton fiber and the modified kapok fiber is enhanced.
A preparation method of antibacterial and antifouling organic cotton and kapok blended yarn comprises the following steps:
s1, preparing modified viscose:
(1) preparing a modified graphene composite material:
A. putting hexamethylenetetramine into deionized water, stirring and dispersing, sequentially adding zinc nitrate and sodium citrate, stirring for reaction, filtering, washing, drying and calcining to obtain powder A;
B. placing graphene in concentrated nitric acid, stirring, filtering, washing and calcining to obtain powder B;
C. putting the powder A and the powder B into an ethanol solution, uniformly stirring, performing ultrasonic treatment, performing suction filtration, and performing vacuum drying to obtain powder C;
D. placing the powder C in deionized water, stirring and dispersing, adding a first silane coupling agent, stirring, sequentially adding the first silane coupling agent and the second silane coupling agent, continuously stirring, adding an initiator, and performing suction filtration and drying to obtain a modified graphene composite material;
(2) placing the modified graphene composite material in viscose fiber spinning solution, uniformly stirring, and obtaining viscose fiber A by a wet spinning technology;
(3) standing the viscose fiber A in a low-pressure environment, adding a natural anti-mite agent, raising the pressure to normal pressure, and standing to obtain modified viscose fiber;
according to the invention, air in the modified graphene composite material on the viscose fiber A is extruded at low pressure, and then the natural anti-mite agent can be extruded into the nano zinc oxide as much as possible under the normal pressure environment.
S2, drawing the aloe fibers and the modified viscose fibers to obtain a modified kapok fiber core layer;
because the modified viscose fiber is provided with carboxyl, the activated kapok fiber is provided with phenolic hydroxyl, and the carboxyl reacts with the phenolic hydroxyl, the binding force between the modified kapok fiber core layer and the kapok fiber skin layer is increased; s3, taking the modified fiber core layer as a core yarn and the kapok fiber as an outer cladding layer, and weaving the modified kapok fiber with the sheath-core structure by adopting an eddy current spinning process;
viscose fibers are poor in elasticity and easy to deform; the aloe fiber is good in hydrophobic property and excellent in rebound resilience, has a certain nourishing effect on skin after being worn for a long time, and can improve the skin problem, but the aloe fiber is short and is difficult to spin directly; the modified kapok fiber core layer obtained by drawing the aloe fiber and the modified viscose fiber combines the advantages of the two fibers, has excellent resilience and good mechanical property, and is not easy to deform;
s3, placing sulfur powder in deionized water, stirring and dissolving, adding sodium hydrosulfide and sodium sulfite, stirring to obtain a solution A, adding kapok fiber, adding a sodium hydroxide solution, performing ultrasonic dispersion, standing, taking out and drying to obtain activated kapok fiber; taking the modified kapok fiber core layer as a core filament, taking the activated kapok fiber as an outer cladding layer, and weaving the modified kapok fiber with a skin-core structure by adopting an eddy current spinning process;
s4, preparing modified organic cotton: placing organic cotton fibers in deionized water, adding N, N-dimethylformamide, performing ultrasonic dispersion, adding lithium chloride, continuing ultrasonic dispersion, taking out and drying, placing in deionized water, adding triethylene tetramine, performing ultrasonic dispersion N, adding a sodium hydroxide solution, continuing ultrasonic dispersion, taking out and drying to obtain modified organic cotton;
s5, preparing an antifouling finishing agent: stirring the organic silicon and the second silane coupling agent, adding the protein molecules and the lithium hydroxide, continuing stirring, adding the Tween 80 and the emulsifier, and stirring to obtain the antifouling finishing agent;
s6, synthesizing blended yarns: preparing the modified kapok fiber and the modified organic cotton fiber into organic cotton and kapok yarns by adopting a siro spinning technology, soaking the organic cotton and the kapok yarns in an antifouling finishing agent, taking out and drying to obtain a finished product of the blended yarn.
The method specifically comprises the following steps:
s1, preparing modified viscose:
(1) preparing a modified graphene composite material:
A. putting hexamethylenetetramine into deionized water, stirring and dispersing, sequentially adding zinc nitrate and sodium citrate at the constant temperature of 75-105 ℃, stirring and reacting for 3-5h at the stirring speed of 200-300r/min, filtering, washing, drying, and calcining for 2-3h at the temperature of 400-500 ℃ to obtain powder A;
B. placing graphene in concentrated nitric acid, stirring and reacting for 15-20min, filtering, washing, and calcining at the temperature of 700-900 ℃ for 20-40s to obtain powder B;
C. putting the powder A and the powder B into an ethanol solution, uniformly stirring, carrying out ultrasonic treatment for 6-10h at the frequency of 35-45kHz, carrying out suction filtration, and carrying out vacuum drying to obtain powder C;
D. under the constant temperature condition of 45-65 ℃, placing the powder C in deionized water, stirring and dispersing, adding a first silane coupling agent, stirring and reacting for 1-3h, sequentially adding methacrylic acid and sodium bisulfite after the reaction is finished, continuously stirring and reacting for 3-5min, adding an initiator, stirring and reacting for 2-4h, cooling to room temperature, and performing suction filtration and drying to obtain a modified graphene composite material;
(2) placing the modified graphene composite material in viscose fiber spinning solution, uniformly stirring at the rotating speed of 400-;
(3) standing the viscose fiber A for 30-50min under the low pressure of 0.01-0.1Mpa, adding natural anti-mite agent, increasing the pressure to normal pressure, standing and reacting for 1-3h to obtain modified viscose fiber;
s2, drawing the aloe fibers and the modified viscose fibers to obtain a modified kapok fiber core layer;
s3, putting sulfur powder into deionized water, stirring and dissolving, adding sodium hydrosulfide and sodium sulfite, stirring and reacting for 3-5min to obtain a solution A, adding the kapok fiber, raising the temperature to 55-75 ℃, adding a sodium hydroxide solution with the mass fraction of 7-10%, ultrasonically dispersing for 35-45min at the frequency of 15-18kHz, standing for 3-5min, taking out and drying to obtain activated kapok fiber; taking the modified kapok fiber core layer as a core filament, taking the activated kapok fiber as an outer cladding layer, and weaving the modified kapok fiber with a skin-core structure by adopting an eddy current spinning process;
s4, preparing modified organic cotton: placing organic cotton fibers in deionized water, raising the temperature to 90-110 ℃, adding N, N-dimethylformamide, performing ultrasonic dispersion for 35-45min at the frequency of 15-18kHz, adding 5-10% by mass of lithium chloride, continuing to perform ultrasonic dispersion for 1-2h, taking out and drying when the temperature is reduced to room temperature, placing in deionized water, raising the temperature to 90-110 ℃, adding triethylene tetramine, performing ultrasonic dispersion for 35-45min at the frequency of 15-18kHz, adding 5-10% by mass of sodium hydroxide solution, continuing to perform ultrasonic dispersion for 1-2h, reducing the temperature to room temperature, taking out and drying to obtain modified organic cotton;
s5, preparing an antifouling finishing agent: stirring and reacting organic silicon and a second silane coupling agent for 20-30min at 90-100 ℃, adding protein molecules and lithium hydroxide, continuously stirring and reacting for 1-2h, adding tween 80 and an emulsifier, and stirring for 1-3h to obtain an antifouling finishing agent;
the antifouling finishing agent is mainly characterized in that a large number of active functional groups such as amino, carboxyl and hydroxyl on the side chain of a protein molecule are exposed under the action of a catalyst lithium hydroxide, and the active functional groups such as amino, carboxyl and hydroxyl are polymerized with organic silicon to obtain the antifouling finishing agent; the prepared blended yarn has excellent water and oil repellent capacity.
S6, synthesizing blended yarns: preparing the modified kapok fiber and the modified organic cotton fiber into organic cotton and kapok yarns by adopting a siro spinning technology, soaking the organic cotton and the kapok yarns in an antifouling finishing agent for reacting for 18-24h, taking out and drying to obtain a finished product of the blended yarn.
Compared with the prior art, the invention has the following beneficial effects:
the method comprises the steps of loading nano zinc oxide with a hollow porous structure on graphene, grafting carboxyl on the surface of the nano zinc oxide by using a first silane coupling agent to obtain a modified graphene composite material, mixing the modified graphene composite material with viscose fiber spinning solution, preparing viscose fibers by a wet spinning method, loading a natural anti-mite agent on the viscose fibers by a low-pressure method, drawing the viscose fibers and aloe fibers to obtain a modified kapok fiber core layer, coating activated kapok fibers on the modified kapok fiber core layer to obtain modified kapok fibers, preparing organic cotton and kapok yarns by the modified kapok fibers and the modified organic cotton fibers through a siro spinning process, and soaking the organic cotton and kapok fibers in a water-repellent oil-repellent finishing agent containing organic silicon to obtain the antifouling, waterproof, long-acting antibacterial and anti-mite machine cotton and kapok blended yarns.
The main components of the modified graphene composite material are nano zinc oxide and graphene, the modified graphene composite material has certain antibacterial and bactericidal functions, is hard in texture, can effectively adsorb and contain natural anti-mite agents, can continuously release anti-mite and antibacterial components, and can effectively inhibit growth and reproduction of microorganisms on the surface of a fabric and inhibit generation of mold through synergistic effect with organic cotton and kapok fibers; meanwhile, the natural anti-mite agent used in the invention has safe and harmless components, less skin irritation and good anti-mite effect; the modified graphene composite material is wrapped in the modified kapok fiber, so that the prepared organic cotton and kapok fiber is more resistant to washing and longer in service life.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Example 1
An antibacterial and antifouling organic cotton and kapok blended yarn comprises the following raw material components: 60 parts of modified kapok fiber, 50 parts of modified organic cotton fiber and 80 parts of antifouling finishing agent.
The modified kapok fiber comprises the following raw material components of 30 parts of modified graphene composite material, 90 parts of viscose spinning solution, 20 parts of natural anti-mite agent, 75 parts of aloe fiber and 120 parts of kapok fiber.
The modified graphene composite material comprises the following raw material components: 20 parts of hexamethylenetetramine, 25 parts of zinc nitrate, 10 parts of sodium citrate, 15 parts of graphene, 10 parts of concentrated nitric acid, 18 parts of first silane coupling agent, 20 parts of methacrylic acid, 20 parts of sodium bisulfite and 10 parts of initiator.
The antifouling finishing agent comprises the following raw material components: 30 parts of organic silicon, 10 parts of a second silane coupling agent, 8 parts of protein molecules, 15 parts of lithium hydroxide, 0 part of tween 8010 and 20 parts of an emulsifier.
The modified organic cotton fiber comprises the following raw material components, namely 80 parts of organic cotton fiber, 20 parts of triethylene tetramine and 10 parts of sodium hydroxide;
s1, preparing modified viscose:
(1) preparing a modified graphene composite material:
A. putting hexamethylenetetramine into deionized water, stirring and dispersing, sequentially adding zinc nitrate and sodium citrate at the constant temperature of 75 ℃, stirring and reacting for 3 hours at the stirring speed of 200r/min, filtering, washing and drying, and calcining for 2 hours at the temperature of 400 ℃ to obtain powder A;
B. placing graphene in concentrated nitric acid, stirring and reacting for 15min, filtering, washing, and calcining for 20s at 700 ℃ to obtain powder B;
C. putting the powder A and the powder B into an ethanol solution, uniformly stirring, performing ultrasonic treatment for 6 hours at the frequency of 35kHz, performing suction filtration, and performing vacuum drying to obtain powder C;
D. under the constant temperature condition of 45 ℃, placing the powder C in deionized water, stirring and dispersing, adding a first silane coupling agent, stirring and reacting for 1h, sequentially adding methacrylic acid and sodium bisulfite after the reaction is finished, continuously stirring and reacting for 3min, adding an initiator, stirring and reacting for 2h, and after the temperature is reduced to room temperature, carrying out suction filtration and drying to obtain a modified graphene composite material;
(2) placing the modified graphene composite material in viscose fiber spinning solution, uniformly stirring at a rotating speed of 400r/min, and obtaining viscose fiber A by a wet spinning technology;
(3) standing the viscose fiber A in a low-pressure environment of 0.01Mpa for 30min, adding a natural anti-mite agent, raising the pressure to normal pressure, standing and reacting for 1h to obtain modified viscose fiber;
s2, drawing the aloe fibers and the modified viscose fibers to obtain a modified kapok fiber core layer;
s3, placing sulfur powder into deionized water, stirring and dissolving, adding sodium hydrosulfide and sodium sulfite, stirring and reacting for 3min, adding the kapok fiber, raising the temperature to 55 ℃, adding a sodium hydroxide solution with the mass fraction of 7%, ultrasonically dispersing for 35min at the frequency of 15kHz, standing for 3min, taking out and drying to obtain activated kapok fiber; taking the modified kapok fiber core layer as a core filament, taking the activated kapok fiber as an outer cladding layer, and weaving the modified kapok fiber with a skin-core structure by adopting an eddy current spinning process;
s4, preparing modified organic cotton: placing organic cotton fibers in deionized water, raising the temperature to 90 ℃, adding N, N-dimethylformamide, performing ultrasonic dispersion for 35min at the frequency of 15kHz, adding 5% by mass of lithium chloride, continuing to perform ultrasonic dispersion for 1h, cooling to room temperature, taking out, drying, placing in deionized water, raising the temperature to 90 ℃, adding triethylene tetramine, performing ultrasonic dispersion for 35min at the frequency of 15kHz, adding 5% by mass of sodium hydroxide solution, continuing to perform ultrasonic dispersion for 1h, cooling to room temperature, taking out, and drying to obtain modified organic cotton fibers;
s5, preparing an antifouling finishing agent: stirring and reacting organic silicon and a second silane coupling agent for 20min at 90 ℃, adding protein molecules and lithium hydroxide, continuously stirring and reacting for 1h, adding Tween 80 and an emulsifier, and stirring for 1h to obtain an antifouling finishing agent;
s6, synthesizing blended yarns: preparing the modified kapok fiber and the modified organic cotton fiber into organic cotton and kapok yarns by adopting a siro spinning technology, soaking the organic cotton and the kapok yarns in an antifouling finishing agent for reacting for 18 hours, taking out and drying to obtain a finished product of the blended yarn.
Example 2
An antibacterial and antifouling organic cotton and kapok blended yarn comprises the following raw material components: the modified kapok fiber comprises, by weight, 120 parts of modified kapok fibers, 80 parts of modified organic cotton fibers and 100 parts of an antifouling finishing agent.
The modified kapok fiber comprises the following raw material components, by weight, 35 parts of a modified graphene composite material, 95 parts of viscose spinning solution, 23 parts of a natural anti-mite agent, 80 parts of aloe fiber and 130 parts of kapok fiber.
The modified graphene composite material comprises the following raw material components: the coating comprises, by weight, 30 parts of hexamethylenetetramine, 30 parts of zinc nitrate, 15 parts of sodium citrate, 20 parts of graphene, 12 parts of concentrated nitric acid, 21 parts of a first silane coupling agent, 25 parts of methacrylic acid, 25 parts of sodium bisulfite and 15 parts of an initiator.
The antifouling finishing agent comprises the following raw material components: the coating comprises, by weight, 40 parts of organic silicon, 12 parts of a second silane coupling agent, 9 parts of protein molecules, 17 parts of lithium hydroxide, 8012 parts of tween and 25 parts of an emulsifier.
The modified organic cotton fiber comprises the following raw material components, by weight, 90 parts of organic cotton fiber, 30 parts of triethylene tetramine and 15 parts of sodium hydroxide;
s1, preparing modified viscose:
(1) preparing a modified graphene composite material:
A. putting hexamethylenetetramine into deionized water, stirring and dispersing, sequentially adding zinc nitrate and sodium citrate at the constant temperature of 95 ℃, stirring and reacting for 4 hours at the stirring speed of 250r/min, filtering, washing, drying, and calcining for 2.5 hours at the temperature of 450 ℃ to obtain powder A;
B. placing graphene in concentrated nitric acid, stirring and reacting for 18min, filtering, washing, and calcining at 800 ℃ for 30s to obtain powder B;
C. putting the powder A and the powder B into an ethanol solution, uniformly stirring, carrying out ultrasonic treatment for 8 hours at the frequency of 40kHz, carrying out suction filtration, and carrying out vacuum drying to obtain powder C;
D. under the constant temperature condition of 55 ℃, placing the powder C in deionized water, stirring and dispersing, adding a first silane coupling agent, stirring and reacting for 2 hours, sequentially adding methacrylic acid and sodium bisulfite after the reaction is finished, continuously stirring and reacting for 4 minutes, adding an initiator, stirring and reacting for 3 hours, and after the temperature is reduced to room temperature, carrying out suction filtration and drying to obtain a modified graphene composite material;
(2) placing the modified graphene composite material in viscose fiber spinning solution, uniformly stirring at a rotating speed of 500r/min, and obtaining viscose fiber A by a wet spinning technology;
(3) standing the viscose fiber A for 40min under the low-pressure environment of 0.05-0.1Mpa, adding a natural anti-mite agent, raising the pressure to normal pressure, standing and reacting for 2h to obtain modified viscose fiber;
s2, drawing the aloe fibers and the modified viscose fibers to obtain a modified kapok fiber core layer;
s3, placing sulfur powder into deionized water, stirring and dissolving, adding sodium hydrosulfide and sodium sulfite, stirring and reacting for 4min, adding the kapok fiber, raising the temperature to 65 ℃, adding a sodium hydroxide solution with the mass fraction of 8%, ultrasonically dispersing for 40min at the frequency of 16kHz, standing for 4min, taking out and drying to obtain activated kapok fiber; taking the modified kapok fiber core layer as a core filament, taking the activated kapok fiber as an outer cladding layer, and weaving the modified kapok fiber with a skin-core structure by adopting an eddy current spinning process;
s4, preparing modified organic cotton: placing organic cotton fibers in deionized water, raising the temperature to 100 ℃, adding N, N-dimethylformamide, performing ultrasonic dispersion for 40min at the frequency of 16kHz, adding 8% by mass of lithium chloride, continuing to perform ultrasonic dispersion for 1.5h, cooling the temperature to room temperature, taking out, drying, placing in deionized water, raising the temperature to 100 ℃, adding triethylene tetramine, performing ultrasonic dispersion for 40min at the frequency of 16kHz, adding 8% by mass of sodium hydroxide solution, continuing to perform ultrasonic dispersion for 1.5h, cooling the temperature to room temperature, taking out, and drying to obtain modified organic cotton fibers;
s5, preparing an antifouling finishing agent: stirring and reacting organic silicon and a second silane coupling agent at 95 ℃ for 25min, adding protein molecules and lithium hydroxide, continuously stirring and reacting for 1.5h, adding Tween 80 and an emulsifier, and stirring for 2h to obtain an antifouling finishing agent;
s6, synthesizing blended yarns: preparing the modified kapok fiber and the modified organic cotton fiber into organic cotton and kapok yarns by adopting a siro spinning technology, soaking the organic cotton and the kapok yarns in an antifouling finishing agent for reaction for 22 hours, taking out and drying to obtain a finished product of the blended yarn.
Example 3
An antibacterial and antifouling organic cotton and kapok blended yarn comprises the following raw material components: 180 parts of modified kapok fiber, 100 parts of modified organic cotton fiber and 120 parts of antifouling finishing agent.
The modified kapok fiber comprises the following raw material components of 40 parts of modified graphene composite material, 100 parts of viscose spinning solution, 26 parts of natural anti-mite agent, 85 parts of aloe fiber and 140 parts of kapok fiber.
The modified graphene composite material comprises the following raw material components: 40 parts of hexamethylenetetramine, 35 parts of zinc nitrate, 20 parts of sodium citrate, 25 parts of graphene, 14 parts of concentrated nitric acid, 24 parts of first silane coupling agent, 30 parts of methacrylic acid, 30 parts of sodium bisulfite and 20 parts of initiator.
The antifouling finishing agent comprises the following raw material components: 50 parts of organic silicon, 14 parts of a second silane coupling agent, 10 parts of protein molecules, 20 parts of lithium hydroxide, 8014 parts of tween and 30 parts of an emulsifier.
The modified organic cotton fiber comprises the following raw material components, by weight, 100 parts of organic cotton fiber, 40 parts of triethylene tetramine and 20 parts of sodium hydroxide;
s1, preparing modified viscose:
(1) preparing a modified graphene composite material:
A. putting hexamethylenetetramine into deionized water, stirring and dispersing, sequentially adding zinc nitrate and sodium citrate at the constant temperature of 105 ℃, stirring and reacting for 5 hours at the stirring speed of 300r/min, filtering, washing, drying, and calcining for 3 hours at the temperature of 500 ℃ to obtain powder A;
B. placing graphene in concentrated nitric acid, stirring and reacting for 20min, filtering, washing, and calcining at 900 ℃ for 40s to obtain powder B;
C. putting the powder A and the powder B into an ethanol solution, uniformly stirring, performing ultrasonic treatment for 10 hours at the frequency of 45kHz, performing suction filtration, and performing vacuum drying to obtain powder C;
D. under the constant temperature condition of 65 ℃, placing the powder C in deionized water, stirring and dispersing, adding a first silane coupling agent, stirring and reacting for 3 hours, sequentially adding methacrylic acid and sodium bisulfite after the reaction is finished, continuously stirring and reacting for 5 minutes, adding an initiator, stirring and reacting for 4 hours, and after the temperature is reduced to room temperature, carrying out suction filtration and drying to obtain a modified graphene composite material;
(2) placing the modified graphene composite material in viscose fiber spinning solution, uniformly stirring at the rotating speed of 600r/min, and obtaining viscose fiber A by a wet spinning technology;
(3) standing the viscose fiber A for 50min in a low-pressure environment of 0.1Mpa, adding a natural anti-mite agent, raising the pressure to normal pressure, and standing for reacting for 3h to obtain modified viscose fiber;
s2, drawing the aloe fibers and the modified viscose fibers to obtain a modified kapok fiber core layer;
s3, placing sulfur powder into deionized water, stirring and dissolving, adding sodium hydrosulfide and sodium sulfite, stirring and reacting for 5min, adding the kapok fiber, raising the temperature to 75 ℃, adding a sodium hydroxide solution with the mass fraction of 10%, ultrasonically dispersing for 45min at the frequency of 18kHz, standing for 5min, taking out and drying to obtain activated kapok fiber; taking the modified kapok fiber core layer as a core filament, taking the activated kapok fiber as an outer cladding layer, and weaving the modified kapok fiber with a skin-core structure by adopting an eddy current spinning process;
s4, preparing modified organic cotton: placing organic cotton fibers in deionized water, raising the temperature to 110 ℃, adding N, N-dimethylformamide, performing ultrasonic dispersion for 45min at the frequency of 18kHz, adding 10% by mass of lithium chloride, continuing to perform ultrasonic dispersion for 2h, cooling to room temperature, taking out, drying, placing in deionized water, raising the temperature to 110 ℃, adding triethylene tetramine, performing ultrasonic dispersion for 45min at the frequency of 18kHz, adding 10% by mass of sodium hydroxide solution, continuing to perform ultrasonic dispersion for 2h, cooling to room temperature, taking out, and drying to obtain modified organic cotton fibers;
s5, preparing an antifouling finishing agent: stirring and reacting organic silicon and a second silane coupling agent for 30min at 100 ℃, adding protein molecules and lithium hydroxide, continuously stirring and reacting for 2h, adding Tween 80 and an emulsifier, and stirring for 3h to obtain an antifouling finishing agent;
s6, synthesizing blended yarns: preparing the modified kapok fiber and the modified organic cotton fiber into organic cotton and kapok yarns by adopting a siro spinning technology, soaking the organic cotton and the kapok yarns in an antifouling finishing agent for reaction for 24 hours, taking out and drying to obtain a finished product of the blended yarn.
Experiment: the blended yarn samples prepared in examples 1-9 were woven into 90mm × 90mm fabric and subjected to the following performance tests;
testing the anti-mite effect: and testing is carried out according to GB and T24253-2009 'evaluation of anti-mite performance of textiles'.
And (3) testing antibacterial performance: the bacteriostatic rate of the fabric samples of the examples 1-9 on staphylococcus aureus is determined by referring to GB and T20944.3-2008.
And (3) testing the water repellency: refer to AATCC 22-2005 water repellency test: and (4) testing according to the standard of the spray method.
Oil repellency test: reference to AATCC118-2007 oil repellency: hydrocarbon impedance test standard.
Easy stain release test: reference AATCC130-2004 "soil release properties: oily stain Release method test was performed according to the Standard.
Wash resistance test: a type-A washing machine, a 3A washing procedure and a F type drying procedure are selected according to GB and T8629-2001, the fabric samples in the examples 1-9 are subjected to standard washing and drying for 30 times, and then subjected to an anti-mite effect test, a water repellency test, an oil repellency test, an easy-decontamination performance test and an antibacterial performance test.
The data in the table show that the fabric samples prepared in the examples 1 to 3 have the mite avoidance rate and the bacteriostatic rate of more than 90% and have better mite prevention and bacteriostatic effects, and the mite avoidance rate is not obviously reduced after 30 times of washing, which shows that the fabric samples in the examples 1 to 3 have stronger washing resistance, the water repellency fraction of more than 90 parts, the oil repellency and stain resistance grade of five grades, stronger oil stain resistance and water stain resistance effects, higher comprehensive performance and very good use property, wherein the test results of various performances of the example 3 are the best.
Example 4
The difference from the embodiment 3 is that the graphene is not loaded with the nano zinc oxide with the hollow porous structure, and the nano zinc oxide is not used as a wall material to load the natural anti-mite agent, so that the load of the natural anti-mite agent on the modified graphene composite material is reduced, and compared with the embodiment 3, the anti-mite effect and the bacteriostatic effect are both reduced.
Example 5
The difference from the embodiment 3 lies in that the modified graphene composite material is not added, the prepared organic cotton and kapok blended yarn has less natural anti-mite agent loading amount and poor anti-mite effect, and the antibacterial effect of the organic cotton and kapok blended yarn is poor due to the lack of the antibacterial effect of the graphene and the nano zinc oxide in the modified graphene composite material.
Example 6
The difference from the embodiment 3 lies in that activation treatment is not performed on kapok fibers and organic cotton fibers, the common organic cotton fibers and the kapok fibers are used in the embodiment, the surfaces of the common organic cotton fibers and the common kapok fibers lack active functional groups, the binding force between the common organic cotton fibers and the modified organic cotton fiber core layer and between the common kapok fibers is insufficient, the amount of the natural mite-proofing agent flowing out of gaps between the fibers is increased, after 30 times of washing, the mite repelling rate is reduced compared with that of the embodiment 3, meanwhile, the antifouling finishing agent and the fibers lack functional groups for connection, and after 30 times of washing, the fabric prepared by the embodiment has poor antifouling, waterproof and oilproof capabilities.
Example 7
The difference from the embodiment 3 is that the modified graphene composite material and the antifouling finishing agent are directly mixed and attached to the surfaces of organic cotton and kapok fibers, and after the modified graphene composite material is washed by 30 times of water, the mite avoidance rate of the modified graphene composite material is slightly reduced compared with that of the embodiment 3, mainly because after a fabric sample is subjected to friction and water impact, part of the modified graphene composite material on the surface falls off, so that the mite avoidance rate is reduced.
Example 8
The difference from the embodiment 3 is that in the step (3) of the step s1, the viscose fiber a is placed in a normal pressure environment and stands for 50min, the natural anti-mite agent on the prepared viscose fiber has a small load, and the mite avoidance rate is reduced.
Example 9
The difference from the embodiment 3 is that the graphene is not pretreated by concentrated nitric acid, the distance between graphene sheets is too small, the loading capacity of the nano zinc oxide is small, the natural anti-mite agent loaded on the prepared modified viscose fiber is insufficient, and the anti-mite and antibacterial capacities of the prepared organic cotton and kapok fiber are insufficient.
From the above data and experiments, we can conclude that: the invention discloses an antibacterial and antifouling organic cotton and kapok blended yarn and a preparation method thereof. The preparation method comprises the steps of loading nano zinc oxide on graphene, mixing the nano zinc oxide with viscose fiber spinning solution to prepare viscose fiber, loading the natural anti-mite agent on the viscose fiber through low pressure, and coating the viscose fiber with kapok fiber to obtain modified kapok fiber; preparing organic cotton and kapok yarns by a siro spinning process, and soaking the organic cotton and kapok yarns in a water-repellent and oil-repellent finishing agent containing organic silicon to obtain the organic cotton and kapok blended yarns with antifouling, water-proof, long-acting bacteriostasis and mite prevention functions; meanwhile, the natural anti-mite agent used in the invention has safe and harmless components, less skin irritation and good anti-mite effect; the modified graphene composite material is wrapped in the modified kapok fiber, so that the prepared organic cotton and kapok fiber is more resistant to washing and longer in service life.
Finally, it should be noted that: although the present invention has been described in detail with reference to the foregoing embodiments, it will be apparent to those skilled in the art that changes may be made in the embodiments and/or equivalents thereof without departing from the spirit and scope of the invention. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (9)
1. A preparation method of antibacterial and antifouling organic cotton and kapok blended yarn is characterized by comprising the following steps: the method comprises the following steps:
s1, preparing modified viscose:
(1) preparing a modified graphene composite material:
A. putting hexamethylenetetramine into deionized water, stirring and dispersing, sequentially adding zinc nitrate and sodium citrate, stirring for reaction, filtering, washing, drying and calcining to obtain powder A;
B. placing graphene in concentrated nitric acid, stirring, filtering, washing and calcining to obtain powder B;
C. putting the powder A and the powder B into an ethanol solution, uniformly stirring, performing ultrasonic treatment, performing suction filtration, and performing vacuum drying to obtain powder C;
D. placing the powder C in deionized water, stirring and dispersing, adding a first silane coupling agent, stirring, sequentially adding the first silane coupling agent and the second silane coupling agent, continuously stirring, adding an initiator, and performing suction filtration and drying to obtain a modified graphene composite material;
(2) placing the modified graphene composite material in viscose fiber spinning solution, uniformly stirring, and obtaining viscose fiber A by a wet spinning technology;
(3) standing the viscose fiber A in a low-pressure environment, adding a natural anti-mite agent, raising the pressure to normal pressure, and standing to obtain modified viscose fiber;
s2, drawing the aloe fibers and the modified viscose fibers to obtain a modified kapok fiber core layer;
s3, placing sulfur powder in deionized water, stirring and dissolving, adding sodium hydrosulfide and sodium sulfite, stirring to obtain a solution A, adding kapok fiber, adding a sodium hydroxide solution, performing ultrasonic dispersion, standing, taking out and drying to obtain activated kapok fiber; taking the modified kapok fiber core layer as a core filament, taking the activated kapok fiber as an outer cladding layer, and weaving the modified kapok fiber with a skin-core structure;
s4, preparing modified organic cotton: placing organic cotton fibers in deionized water, adding N, N-dimethylformamide, performing ultrasonic dispersion, adding lithium chloride, continuing ultrasonic dispersion, taking out and drying, placing in deionized water, adding triethylene tetramine, performing ultrasonic dispersion, adding a sodium hydroxide solution, continuing ultrasonic dispersion, taking out and drying to obtain modified organic cotton;
s5, preparing an antifouling finishing agent: stirring the organic silicon and the second silane coupling agent, adding the protein molecules and the lithium hydroxide, continuing stirring, adding the Tween 80 and the emulsifier, and stirring to obtain the antifouling finishing agent;
s6, synthesizing blended yarns: preparing the modified kapok fiber and the modified organic cotton fiber into organic cotton and kapok yarns by adopting a siro spinning technology, soaking the organic cotton and the kapok yarns in an antifouling finishing agent, taking out and drying to obtain a finished product of the blended yarn.
2. The preparation method of the antibacterial and antifouling organic cotton and kapok blended yarn according to claim 1, characterized by comprising the following steps: the method specifically comprises the following steps:
s1, preparing modified viscose:
(1) preparing a modified graphene composite material:
A. putting hexamethylenetetramine into deionized water, stirring and dispersing, sequentially adding zinc nitrate and sodium citrate at the constant temperature of 75-105 ℃, stirring and reacting for 3-5h at the stirring speed of 200-300r/min, filtering, washing, drying, and calcining for 2-3h at the temperature of 400-500 ℃ to obtain powder A;
B. placing graphene in concentrated nitric acid, stirring and reacting for 15-20min, filtering, washing, and calcining at the temperature of 700-900 ℃ for 20-40s to obtain powder B;
C. putting the powder A and the powder B into an ethanol solution, uniformly stirring, carrying out ultrasonic treatment for 6-10h at the frequency of 35-45kHz, carrying out suction filtration, and carrying out vacuum drying to obtain powder C;
D. under the constant temperature condition of 45-65 ℃, placing the powder C in deionized water, stirring and dispersing, adding a first silane coupling agent, stirring and reacting for 1-3h, sequentially adding methacrylic acid and sodium bisulfite after the reaction is finished, continuously stirring and reacting for 3-5min, adding an initiator, stirring and reacting for 2-4h, cooling to room temperature, and performing suction filtration and drying to obtain a modified graphene composite material;
(2) placing the modified graphene composite material in viscose fiber spinning solution, uniformly stirring at the rotating speed of 400-;
(3) standing the viscose fiber A for 30-50min under the low pressure of 0.01-0.1Mpa, adding natural anti-mite agent, increasing the pressure to normal pressure, standing and reacting for 1-3h to obtain modified viscose fiber;
s2, drawing the aloe fibers and the modified viscose fibers to obtain a modified kapok fiber core layer;
s3, putting sulfur powder into deionized water, stirring and dissolving, adding sodium hydrosulfide and sodium sulfite, stirring and reacting for 3-5min to obtain a solution A, adding the kapok fiber, raising the temperature to 55-75 ℃, adding a sodium hydroxide solution with the mass fraction of 7-10%, ultrasonically dispersing for 35-45min at the frequency of 15-18kHz, standing for 3-5min, taking out and drying to obtain activated kapok fiber; taking the modified kapok fiber core layer as a core filament, taking the activated kapok fiber as an outer cladding layer, and weaving the modified kapok fiber with a skin-core structure;
s4, preparing modified organic cotton: placing organic cotton fibers in deionized water, raising the temperature to 90-110 ℃, adding N, N-dimethylformamide, performing ultrasonic dispersion for 35-45min at the frequency of 15-18kHz, adding 5-10% by mass of lithium chloride, continuing to perform ultrasonic dispersion for 1-2h, taking out and drying when the temperature is reduced to room temperature, placing in deionized water, raising the temperature to 90-110 ℃, adding triethylene tetramine, performing ultrasonic dispersion for 35-45min at the frequency of 15-18kHz, adding 5-10% by mass of sodium hydroxide solution, continuing to perform ultrasonic dispersion for 1-2h, reducing the temperature to room temperature, taking out and drying to obtain modified organic cotton;
s5, preparing an antifouling finishing agent: stirring and reacting organic silicon and a second silane coupling agent for 20-30min at 90-100 ℃, adding protein molecules and lithium hydroxide, continuously stirring and reacting for 1-2h, adding tween 80 and an emulsifier, and stirring for 1-3h to obtain an antifouling finishing agent;
s6, synthesizing blended yarns: preparing the modified kapok fiber and the modified organic cotton fiber into organic cotton and kapok yarns, soaking the organic cotton and kapok yarns in the antifouling finishing agent for reacting for 18-24h, taking out and drying to obtain a finished product of the blended yarn.
3. The preparation method of the antibacterial and antifouling organic cotton and kapok blended yarn according to claim 1, characterized by comprising the following steps: the raw material components are as follows: 60-180 parts of modified kapok fiber, 50-100 parts of modified organic cotton fiber and 80-120 parts of antifouling finishing agent.
4. The preparation method of the antibacterial and antifouling organic cotton and kapok blended yarn according to the claim 3, is characterized in that: the modified kapok fiber comprises the following raw material components, by weight, 30-40 parts of a modified graphene composite material, 90-100 parts of a viscose spinning solution, 20-26 parts of a natural anti-mite agent, 75-85 parts of aloe fiber and 120-140 parts of kapok fiber.
5. The preparation method of the antibacterial and antifouling organic cotton and kapok blended yarn according to claim 4, characterized by comprising the following steps: the modified graphene composite material comprises the following raw material components: the coating comprises, by weight, 20-40 parts of hexamethylenetetramine, 25-35 parts of zinc nitrate, 10-20 parts of sodium citrate, 15-25 parts of graphene, 10-14 parts of concentrated nitric acid, 18-24 parts of a first silane coupling agent, 20-30 parts of methacrylic acid, 20-30 parts of sodium bisulfite and 10-20 parts of an initiator.
6. The preparation method of the antibacterial and antifouling organic cotton and kapok blended yarn according to the claim 3, is characterized in that: the antifouling finishing agent comprises the following raw material components: by weight, 30-50 parts of organic silicon, 10-14 parts of a second silane coupling agent, 8-10 parts of protein molecules, 15-20 parts of lithium hydroxide, 0-14 parts of tween 801and 20-30 parts of an emulsifier.
7. The preparation method of the antibacterial and antifouling organic cotton and kapok blended yarn according to claim 5, characterized by comprising the following steps: the first silane coupling agent is one or more of A150, A151 and A171.
8. The preparation method of the antibacterial and antifouling organic cotton and kapok blended yarn according to claim 6, characterized by comprising the following steps: the second silane coupling agent is one or more of HD-110 and HD-109; the protein molecules are one or more of soybean protein, fibroin and milk protein.
9. The preparation method of the antibacterial and antifouling organic cotton and kapok blended yarn according to the claim 3, is characterized in that: the modified organic cotton fiber comprises, by weight, 80-100 parts of organic cotton fiber, 20-40 parts of triethylene tetramine and 10-20 parts of sodium hydroxide.
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