1636results about "Monocomponent polyamides artificial filament" patented technology

The invention relates to the technical field of textiles, and discloses a cool and washable bio-based nylon 56 fabric and a preparation method thereof. The preparation method of the cool and washable bio-based nylon 56 fabric comprises the following steps: loading modified nano aluminum oxide on modified aluminum nitride microchips to obtain a composite cool material; nylon 56, an ethylene-methyl acrylate-glycidyl methacrylate terpolymer, polypentamethylene guanidine hydrochloride and a composite cool feeling material are subjected to blending extrusion and melt spinning, and then the bio-based nylon 56 fabric is woven. Mixing the composite modified boron nitride and ethanol to obtain finishing liquid; spraying the finishing liquid on one side of the bio-based nylon 56 fabric, and drying to obtain the cool washable bio-based nylon 56 fabric. The cool and washable bio-based nylon 56 fabric disclosed by the invention has excellent cool feeling, antibacterial property, washable property, moisture absorption property and unidirectional perspiration property.

The invention discloses a hollow aramid aerogel fiber with a hierarchical pore structure as well as a preparation method and application of the hollow aramid aerogel fiber. The preparation method comprises the following steps: by using a coaxial wet spinning method, using a spinning solution A as a shell spinning solution and a spinning solution B as a core spinning solution, simultaneously extruding the spinning solution A and the spinning solution B into a coagulating bath, carrying out in-situ dynamic sol-gel conversion, and then carrying out specific drying to obtain the hollow aramid aerogel fiber with the hierarchical pore structure, the middle of the hollow aramid fiber aerogel fiber with the hierarchical pore structure is of a hollow structure, and the fiber wall is of the hierarchical pore structure. The prepared hollow aramid fiber aerogel fiber with the hierarchical pore structure has the advantages of being large in specific surface area and high in porosity, the inner diameter, the outer diameter and the wall thickness of the fiber and the size, the morphology and the pore size distribution of pores in the fiber wall can be adjusted and controlled, the preparation method has universality, the preparation process is simple, and large-scale production is easy to achieve.

The invention relates to the technical field of modified fibers, and discloses a high-strength polyamide fiber composite material and a preparation method thereof.4-vinylpyridine, 16-bromohexadecanoic acid, 2, 4, 6, 8-tetramethylcyclotetrasiloxane and the like are used as raw materials, a cyclic organosilicon quaternary ammonium salt carboxylic acid monomer is obtained through quaternization and hydrosilylation reaction and polymerized with ethidene diamine, and the high-strength polyamide fiber composite material is obtained. According to the similar compatibility principle, the organosilicon quaternary ammonium salt hyperbranched polyamide and PA6 slices are subjected to melt blending and spinning, and the high-strength polyamide fiber composite material is obtained. A quaternary ammonium salt structure and an amide structure have hydrophilicity, an alkyl long chain has hydrophobicity, and hydrophilic-hydrophobic combination is beneficial to penetration of quaternary ammonium salt molecules through bacterial cell membranes, so that a bactericidal effect is achieved; the cyclic organic silicon and the hyperbranched polyamide have large crosslinking density, stress can be better dispersed and transmitted when the cyclic organic silicon and the hyperbranched polyamide are subjected to external force, stress concentration is avoided, and therefore the effect of reinforcing and toughening the polyamide fiber is achieved.

The invention relates to the technical field of hollow gel fibers, in particular to a hollow aramid aerogel fiber and a preparation method thereof. By combining wet spinning with a chemical foaming method, the inner diameter, the outer diameter and the wall thickness of the fiber and the size on a fiber wall hole are regulated and controlled, the hollow aramid aerogel fiber with the high porosity is formed, and the hollow aramid aerogel fiber has high selectivity and high flux, has the properties of flame retardance, heat insulation, high mechanical strength and the like, and is suitable for large-scale production. The use performance and the application range of the aerogel fiber in the prior art are improved and expanded.

The invention discloses a preparation method of antistatic modified chinlon filaments, and relates to the field of chinlon filaments. When the antistatic modified chinlon filament is prepared, (formylmethyl) diethyl phosphate and 1-aminopyrrole react to prepare pyrrole diethyl phosphate; reacting the hydroxylated multi-walled carbon nanotube with pyrrole diethyl phosphate to obtain a modified multi-walled carbon nanotube; the preparation method comprises the following steps: reacting 2, 2 '-bipyridine-5, 5'-dicarboxylic acid with 2-amino-5-nitrophenol, and then reducing to obtain a benzoxazole diamine monomer; then, adipic acid, 1, 5-diaminopentane and a benzoxazole diamine monomer are subjected to a reaction, and modified polyamide is prepared; uniformly mixing the modified polyamide, the modified multi-walled carbon nanotubes, pyrrole, ferric trichloride and copper chloride, and performing melt spinning to obtain the antistatic modified polyamide filament. The antistatic modified chinlon filament prepared by the invention has excellent antistatic, flame-retardant, anti-aging and mechanical properties.

The invention discloses a high-strength polyamide fiber and a preparation method thereof, and relates to the technical field of chemical fiber, the high-strength polyamide fiber is prepared from the following raw materials by weight: 100 parts of functional polyamide, 3-5 parts of a coupling agent, 10-20 parts of reinforced fiber, 1-2 parts of an antioxidant, 0.6-1 part of a lubricant, and 1-3 parts of 2, 4, 6-trivinyl boroxane. The functional polyamide comprises a structural unit introduced by the following monomers: benzoguanamine, 2, 3-quinolindicarboxylic acid and 2, 2 '-bis (trifluoromethyl) diaminobiphenyl. The high-strength polyamide fiber is high in strength and excellent in ultraviolet aging resistance and heat aging resistance.

The invention discloses a heat insulation fabric and a preparation method thereof, and relates to the technical field of fabrics. The thermal insulation fabric is prepared by using a magnetic field to assist wet spinning of the modified silicon dioxide aerogel and the polyamide fiber and then oxidizing the acrylic acid at a high temperature; firstly, nano titanium dioxide is prepared through catalysis of modified polyurethane, the mechanical property of silicon dioxide aerogel is improved, and nano titanium dioxide has an excellent anti-ultraviolet effect and can further improve the heat insulation performance of the fabric; secondly, applying a magnetic field to assist the modified silicon dioxide aerogel and the polyamide fiber in wet spinning, and then decomposing acrylic acid at high temperature; the appearance of the nano titanium dioxide can be adjusted by applying a magnetic field, and the ultraviolet protection effect is improved; after the acrylic acid is decomposed, slender nano grooves and holes are left in the fabric, and the slender nano groove structure can increase the contact area between fibers and increase the heat transfer path, so that the fabric has an ultralow heat conductivity coefficient and achieves the effects of heat insulation and ultraviolet prevention.

The invention relates to a preparation method of a high-antibacterial hydrophobic polyamide fiber. The preparation method comprises the following steps: carrying out melt extrusion grafting on polyamide, a quaternary ammonium salt monomer, an initiator and an auxiliary agent to prepare quaternary ammonium salt grafted polyamide; and carrying out melt blending on the prepared quaternary ammonium salt grafted polyamide, polyamide, cuprous oxide and polydimethylsiloxane to obtain the high-antibacterial hydrophobic nylon composite material. And spinning the high-antibacterial hydrophobic nylon composite material to obtain the high-antibacterial hydrophobic polyamide fiber. The high-antibacterial hydrophobic nylon composite material prepared by the method disclosed by the invention can realize efficient antibacterial performance, and the high antibacterial hydrophobic performance of the prepared polyamide fiber is improved.

The invention relates to the technical field of synthetic fibers, in particular to a high-elasticity textile fiber and a preparation process thereof. The high-elasticity textile fiber is prepared from the polyurethane-polyamide elastomer and the modified diatomite master batch through melt spinning, drafting and winding. According to the invention, hydroxyl-terminated polydimethylsiloxane is used as polyol, and the molar ratio of the polyurethane prepolymer to the polyamide prepolymer is controlled, so that the prepared polyamide-polyurethane elastomer slice has good heat resistance; the molar ratio of isocyanate to polyol and the molar mass ratio of caprolactam to adipic acid are controlled, so that the prepared textile fiber is excellent in mechanical property; 2, 2-dimethylolpropionic acid is used for a chain extension reaction, the molar ratio is controlled, the moisture regain of the prepared textile fiber is 8.58%, and the moisture absorption is high; the diatomite is modified by the quaternary ammonium salt compound, and the addition proportion is adjusted, so that the prepared spinning fiber has good antibacterial performance.

The invention relates to the technical field of chemical materials, in particular to a para-aramid aerogel fiber and a preparation method thereof.The preparation method comprises the steps that S1, para-aramid polymer and silicon dioxide aerogel are dissolved and mixed in concentrated sulfuric acid, and a para-aramid spinning solution is obtained; the weight ratio of the para-aramid polymer to the silicon dioxide aerogel is 1: (0.01-0.05). S2, preparing para-aramid nascent fibers from the para-aramid spinning solution through dry jet wet spinning; and S3, replacing the para-aramid nascent fiber in an alkali solution, washing, and freeze-drying to obtain the para-aramid aerogel fiber. According to the preparation method, the para-aramid aerogel fiber is prepared in an inorganic compounding mode, the problem that an aerogel structure cannot be achieved due to the fact that para-aramid is high in strength, high in modulus and compact in molecular chain is solved, and the prepared para-aramid fiber aerogel is high in strength and capable of achieving flexible weaving performance.

A knit fabric includes a back layer including a first back yarn, the first back yarn having a minimum moisture regain of at least 6.0 weight percent. The first back yarn is plated with a back elastic yarn. The knit fabric also includes a face layer including a first face yarn having a maximum moisture regain of less than 5.5 weight percent. The first face yarn is plated with a face elastic yarn. The knit fabric further includes a connecting elastic yarn forming yarn connections between the face layer and the back layer binding together the layers. A denier of the face elastic yarn may be greater than a denier of the back elastic yarn and the connecting elastic yarn. One or both of the back layer or the face layer may comprise a full-feeder knit construction.

The invention relates to the technical field of multi-layer composite fabrics, and discloses a moisture-absorption antibacterial layered composite fabric and a preparation method thereof. The preparation method comprises the following steps: carrying out melt spinning on polyamide and an antibacterial agent to prepare the antibacterial polyamide fiber; blending antibacterial polyamide fibers, cotton fibers and special-shaped section polyamide fibers, and knitting to obtain a lining fabric crude product; blending the antibacterial polyamide fiber and the modified cotton fiber, and knitting to obtain a surface fabric crude product; respectively padding the surface fabric crude product and the lining fabric crude product in the finishing liquid to obtain a surface fabric and a lining fabric, and compounding the surface fabric and the lining fabric to obtain the moisture-absorbing antibacterial layered composite fabric. The composite fabric has excellent antibacterial performance and good moisture absorption performance.

The invention relates to the technical field of functional fibers, and particularly discloses a polyamide fiber containing active ingredients of fructus lycii, herba dendrobii and poria cocos and a preparation method of the polyamide fiber containing the active ingredients of the fructus lycii, the herba dendrobii and the poria cocos. Comprising the following raw materials in parts by weight: 100-300 parts of chinlon chips, 15-30 parts of a Chinese wolfberry extract, 10-20 parts of a dendrobium extract, 8-20 parts of a poria cocos extract and 10-20 parts of a modifier. And the modifier is obtained by acidifying bentonite with tartaric acid and then modifying with 1-butyl-3-methylimidazolium acetate, so that the modifier can stably adsorb plant active components, promote the plant active components to be kept on the fiber surface for a long time, and still keep the bacteriostatic activity after high-temperature treatment, so that the antibacterial property of the fiber is improved, and the antibacterial property of the fiber is improved. The antibacterial performance of the polyamide fiber has durability and stability, and the market prospect is wide.

The invention relates to the technical field of fibers, and discloses an antibacterial and antistatic fiber material based on silver ions and halamine and a preparation method of the antibacterial and antistatic fiber material. The preparation method comprises the following steps: loading a methyl methacrylate-based polymer on the surface of a silver-loaded molecular sieve through an in-situ polymerization method, and grafting a halamine antibacterial monomer chlorinated piperidinol through an ester exchange reaction to obtain an antibacterial agent; the preparation method comprises the following steps: carrying out reaction polymerization on caprolactam, quaternized polyether, polyethylene glycol, 2, 6-dipicolinic acid and adipic acid to obtain an antistatic agent; an antibacterial agent, an antistatic agent and nano-silver are added into chemical fiber slices, the antibacterial and antistatic fiber material based on silver ions and halamine is prepared after melt spinning, and the chemical fiber slices are polyester slices or chinlon slices or polypropylene slices. The fiber material has excellent antibacterial and antistatic properties.

The invention discloses a high-moisture-absorption cool-sense chinlon 6 master batch and a fiber and a preparation method thereof, and belongs to the technical field of chemical fibers. The preparation method comprises the following steps: respectively crushing and grinding chinlon 6 powder, a moisture absorption modifier, cool powder, an antioxidant and a dispersing agent, mixing to prepare mixed powder, and carrying out quantitative feeding, melting and plasticizing, screw transmission and shearing, water-cooling pelletizing, vibration screening and forced air drying to prepare the high-moisture-absorption cool chinlon 6 master batch. The preparation method comprises the following steps: uniformly mixing dried high-moisture-absorption cool-sense chinlon 6 master batches and chinlon 6 slices, metering, mixing, extruding and melting, spraying out through a special-shaped hole spinneret plate to form tows, sucking monomers, bundling, oiling, stretching, sizing, and finally winding and spooling to obtain the high-moisture-absorption cool-sense chinlon 6 fiber. The preparation method disclosed by the invention is simple in process, the moisture regain of the prepared high-moisture-absorption cool-feeling chinlon 6 fiber can reach 5-8%, meanwhile, the high-moisture-absorption cool-feeling chinlon 6 fiber shows cool feeling and good air permeability and comfort, and a woven fabric is soft, skin-friendly and smooth in hand feeling.

The invention discloses a silicon dioxide aerogel chinlon 6 composite fiber and a preparation method thereof, and belongs to the technical field of chemical fibers. The preparation method comprises the following steps: firstly, carrying out surface modification on silicon dioxide aerogel by adopting an alcohol ester method to obtain modified silicon dioxide aerogel powder with improved hydrophobicity, and then uniformly mixing and blending PA6 slices and the silicon dioxide aerogel powder to prepare the silicon dioxide aerogel chinlon 6 composite master batch. And finally, mixing and extruding the silicon dioxide aerogel and chinlon 6 composite master batch and PA6 slices, and carrying out melt spinning to finally prepare the silicon dioxide aerogel and chinlon 6 composite fiber. Hydrophobically modified silicon dioxide aerogel is uniformly dispersed in a chinlon 6 matrix, so that the heat conductivity coefficient of the silicon dioxide aerogel and chinlon 6 composite fiber is remarkably reduced, and the prepared silicon dioxide aerogel and chinlon 6 composite fiber has good light weight, flexibility and wear resistance while keeping high heat retention property; the bottleneck of poor mechanical property of the traditional aerogel composite material is broken through.

Provided is a polyamide resin, which is a copolymer of a biodegradable polyamide, such as polyamide 2 to polyamide 4, and another polyamide, the polyamide resin having enhanced biodegradability. The polyamide resin contains a structural unit represented by Formula (1) and another polyamide structural unit, and a difference between a degree of randomness determined based on a proportion of each structural unit as determined by 1H-NMR measurement when structural units are assumed to have an ideal random sequence and a degree of randomness determined based on a proportion of carbonyl carbon of an amide group linking different structural units with respect to a total peak integrated value for carbonyl carbon as determined by 13C-NMR measurement is 0.10 or less, where in Formula (1), x is an integer of 1 or greater and 3 or less.

The invention relates to the technical field of fibers, and discloses a graphene modified polyamide fiber preparation method, which comprises: mixing 0.05-0.5 part by weight of graphene oxide, 1-4 parts by weight of carboxyl-terminated hyperbranched polyesteramide and nylon 6, and carrying out melt blending spinning, drafting and cooling setting in a spinning machine to obtain the graphene modified polyamide fiber. The hyperbranched polyesteramide has good compatibility with nylon 6, plays a good toughening role, improves the interfacial compatibility of graphene oxide and nylon 6, and improves the breaking strength and elongation at break of the fiber. The end group of the hyperbranched polyesteramide contains a large amount of hydrophilic carboxyl, and the main chain contains hydrophilic amido bonds, so that the moisture regain of the polyamide fiber can be improved, and the hydrophilic moisture absorption performance can be improved.

The invention relates to the technical field of fibers, and discloses a preparation method of antibacterial modified fibers for textile fabrics, nylon 6 and copper-tea polyphenol-based hyperbranched polyamide are added into formic acid, the mixture is stirred and then spun by an electrostatic spinning machine, and the antibacterial modified fibers for the textile fabrics are obtained. The hyperbranched polyamide has good compatibility with nylon 6, contains a three-dimensional dendritic hyperbranched molecular chain, has a good toughening effect on nylon 6 fibers, and enables the fibers to maintain good breaking strength while improving the elongation at break of the fibers. The copper-tea polyphenol-based hyperbranched polyamide contains tea polyphenol active antibacterial substances and antibacterial copper ions, so that the antibacterial performance of the fiber is remarkably improved. Meanwhile, the copper ions, the tea polyphenol and the catechol-based hyperbranched polyamide form a tight and firm coordination effect, and the copper ions and the tea polyphenol are also difficult to elute from a fiber matrix, so that the fiber still keeps excellent antibacterial performance.

The invention belongs to the field of functional textile materials, and provides a cool-feeling anti-ultraviolet nylon fabric and a preparation method thereof, and the cool-feeling anti-ultraviolet nylon fabric adopts a design scheme of combining a boron nitride / titanium dioxide composite filler with a beta-hydroxyl ether type ultraviolet absorption silane coupling agent surface modification technology. Uniform loading of hexagonal boron nitride on the surface of anatase type titanium dioxide is realized through an in-situ heat treatment process, a composite structure with heat conduction and ultraviolet shielding functions is constructed, and a complete process flow of master batch preparation, melt spinning, weaving, after-treatment and the like is matched; the ultraviolet protection coefficient UPF of the fabric is not lower than 40, the UPF retention rate after 20 times of household washing cycles is not lower than 80%, and the cool feeling qmax at the contact moment is not lower than 0.20 W / cm, the technical problem that an existing nylon fabric is insufficient in ultraviolet resistance and cool feeling function is solved, and the fabric has wide industrial application value.

The invention relates to a multistage composite micro-nano particle with wide spectrum regulation and control performance and preparation and application thereof, the product comprises an inner core particle, an intermediate layer particle and an outer layer organic matter, the intermediate layer particle uniformly grows on the surface of the inner core particle and is coated by the outer layer organic matter; the preparation method comprises the following steps: firstly, pretreating the surfaces of inner core particles, then adding the pretreated inner core particles into a silane coupling agent solution for modification treatment to obtain silane coupling agent modified inner core particles, and finally forming intermediate layer nano-particles on the surfaces of the inner core particles by adopting a sol-gel method, a coprecipitation method, a hydrothermal method or an impregnation method to obtain the product. During application, the product and polymer master batches are uniformly mixed and dried, and then the fiber with the radiation refrigeration characteristic is prepared through a melt spinning process. The method is simple, and the product has a good radiation refrigeration effect; during application, the prepared fiber with the radiation refrigeration characteristic has the effects of dual regulation and control of solar radiation resistance and human body radiation refrigeration.

The present invention pertains to a long-fine aramid single fiber having a maximum fiber diameter of less than 2,000 nm and a minimum fiber length of greater than 10 μm, wherein the degree x of crystallinity determined by the expression x=(1-∆Qx / ∆Q0)×100 (%) (in the expression, ∆Qx is a heat capacity change amount before and after the glass transition point of the long-fine aramid single fiber, and ∆Q0 is a heat capacity change amount before and after the glass transition point of an amorphous aramid) is at least 60%. The present invention can provide an aramid single fiber which is very thin and long and has a high degree of crystallinity.

The invention relates to a Janus flexible super fabric capable of dynamically regulating and controlling infrared emissivity as well as a preparation method and application of the Janus flexible super fabric, and belongs to the technical field of high-performance fiber products. In order to solve the problem that the existing fabric capable of dynamically regulating and controlling the infrared emissivity cannot realize stepless wide-range infrared reflectivity dynamic regulation and control, the invention provides a Janus flexible super fabric capable of dynamically regulating and controlling the infrared emissivity, which has a sandwich structure, the hydrophobic nanofiber thin film layer, the low-emissivity coating and the hydrophilic nanofiber thin film layer are sequentially arranged from bottom to top. An anti-gravity unidirectional carrier transfer channel is constructed through surface binding energy difference of hydrophilic-hydrophobic Janus porous fabrics on two sides, a hydrophilic low-emissivity coating with ultralow infrared emissivity and the Janus porous fabrics form a sandwich structure, dielectric constants are adjusted through continuous and reversible change of carrier content, and accordingly, the infrared emission performance of the fabric is improved, and the infrared emission performance of the fabric is improved. Stepless regulation and control of humidity response self-adaptive ultra-wide range infrared emissivity at normal temperature are realized.

The invention belongs to the technical field of multifunctional fibers, and particularly relates to a preparation method of multifunctional jasmine, camellia and chamomile fibers, and the preparation method comprises the steps of preparation of beta-cyclodextrin microspheres, modification of carboxyl, adsorption, preparation of bis-aminated polyethylene glycol polycaprolactone and spinning. The prepared multifunctional jasmine, camellia and chamomile fiber has an excellent antibacterial effect and a natural antibacterial effect, the bacteriostasis rate to staphylococcus aureus is 98.5-99.2%, the bacteriostasis rate to candida albicans is 98.2-99%, the bacteriostasis rate to escherichia coli is 97.5-98.7% after the multifunctional jasmine, camellia and chamomile fiber is washed with water for 50 times, and the antibacterial standard of textiles is met; the antibacterial durability is good, and the average antibacterial loss rate after 50 times of washing is lower than 2%; the antioxidant and anti-mite effects are good, and the free radical scavenging rate is more than 96%; and the mite repelling rate is greater than 70%.

The invention discloses a special color master batch for high-efficiency cool chinlon and a preparation method of the special color master batch, and relates to the technical field of functional master batch and resin modification. The invention relates to a special color master batch for high-efficiency cool chinlon. The special color master batch is prepared from the following components in parts by mass: 40-70 parts of carrier resin, 15-25 parts of a cool functional material, 3-10 parts of a dispersing agent, 5-25 parts of pigment, 0.5-5 parts of an auxiliary processing aid and 1.5-1.5 parts of an antioxidant. Oxidation degradation of the color master batch in high-temperature processing and long-term use of the fabric can be effectively inhibited through oxidation resistance, the problems of yellowing, mechanical property reduction and the like are reduced, and the stable service cycle of the color master batch and the fabric is prolonged.

The invention discloses a para-aramid (PPTA) fiber as well as a preparation method and application thereof, belongs to the technical field of high polymer materials, and solves the problem that a PPTA material in the prior art cannot meet the requirement of an ultrahigh-end application field on material modulus. The invention discloses a preparation method of para-aramid fiber, which comprises the following steps: uniformly dispersing a covalent organic framework material in concentrated sulfuric acid at room temperature to obtain a sulfuric acid solution of the covalent organic framework material; dissolving poly (p-phenylene terephthalamide) in a sulfuric acid solution of a covalent organic framework material to obtain spinning slurry; filtering, defoaming and spinning the spinning slurry in sequence; and carrying out purification operation to obtain the para-aramid fiber. According to the preparation method provided by the invention, the condensed state of a PPTA molecular chain is regulated and controlled by adding the COFs structural material, and intermolecular microdefects of the PPTA molecular chain are reduced, so that the strength and modulus of the para-aramid fiber are improved, and the application field of the para-aramid fiber is expanded.

The invention provides a preparation method of meta-aramid fibrid, which comprises the following steps: a) pre-polymerizing m-phenylenediamine and isophthaloyl dichloride in a reaction kettle to obtain a prepolymer; b) polymerizing, diluting and neutralizing the prepolymer in a twin-screw reactor to obtain a meta-aramid fibrid stock solution; and c) dispersing and forming the meta-aramid fibrid stock solution and a coagulating bath under the action of high shear, and washing the obtained product with water to obtain the meta-aramid fibrid. The invention also provides the meta-aramid fibrid prepared by the method provided by the technical scheme. The meta-aramid fibrid prepared by the method provided by the invention is in a film shape or a fiber strip shape, and has excellent mechanical properties, chemical stability and flame retardance and outstanding high temperature resistance and insulating property. The preparation method of the meta-aramid fibrid, provided by the invention, is simple in process, stable in product performance and suitable for industrial production.

The invention discloses an organic / inorganic composite anti-ultraviolet polyamide 66 fiber master batch, a preparation method thereof and a functional fiber. The organic / inorganic composite anti-ultraviolet polyamide 66 fiber master batch is prepared from the following raw materials in parts by weight: 50-85 parts of polyamide 66 resin; 10 to 45 parts of an organic / inorganic composite anti-ultraviolet nano material; 0.5 to 10 parts of a fluorescent whitening agent; 0.2 to 5.0 parts of a dispersant; the organic / inorganic composite anti-ultraviolet nano material is prepared from an inorganic anti-ultraviolet material, a coupling agent and an organic ultraviolet absorbent. The fiber and the fabric which are made of the master batch have an anti-ultraviolet function, and also have higher strength, smaller fineness, soft luster, soft hand feeling and comfort.

The present invention discloses an antistatic and quick-drying multi-layer composite nylon fabric and a preparation method thereof. The antistatic and quick-drying multi-layer composite nylon fabric sequentially includes, from the outside to the inside: a modified layer, a carbon bead layer, and a moisture absorption layer; the modified layer is prepared by mixing bio-based nylon and modified graphene to obtain a modified graphene nylon fabric, and then blending it into yarn and weaving it; the carbon bead layer is prepared from carbon powder, phenolic resin, nano silver, and a surfactant; the moisture absorption layer is prepared by soaking bio-based nylon in a moisture absorbent, blending it into yarn, and weaving it; when polypropylene / modified graphene fiber modifies the existing bio-based nylon, it not only improves the antistatic resistance but also maintains a relatively high mechanical strength as much as possible. The prepared composite fabric has better antistatic, antibacterial, and moisture absorption properties, effectively solving the problem of the decrease in breaking strength and service performance caused by the improvement of antistatic properties.

The invention relates to the technical field of fibers, and discloses a preparation method of a high-elasticity nylon fiber for a tennis racket string, nylon 6 and polyether modified polyimide with the mass ratio of 100: (10-30) are subjected to melt blending spinning in a spinning machine, then drafting and sizing are performed through a hot roller drafting machine, and the high-elasticity nylon fiber for the tennis racket string is obtained. The polyether modified polyimide contains the same amido bond structural unit as nylon 6, so that the polyether modified polyimide has good compatibility with nylon 6, the polyether modified polyimide can be uniformly dispersed in a nylon fiber matrix, and a flexible polyethylene glycol molecular chain is introduced into a polyimide molecular chain, so that the polyether modified polyimide improves the toughness and elasticity of the nylon fiber; therefore, the high elongation at break and the high elastic recovery rate are shown. The nylon fiber disclosed by the invention has good practical application in the aspects of tennis racket lines and the like.