382 results about "Nylon fiber" patented technology

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 relates to nylon resin with excellent dyeing performance and a preparation process thereof, through adjustment of copolymerization composition and polymerization process parameters, a long-chain nylon fiber prepared from the nylon resin is dyed at a relatively low temperature and then is subjected to cold crystallization color fixation at a relatively high temperature, so that the long-chain nylon fiber with excellent dyeing performance is obtained.

The invention relates to the technical field of layered composite fabrics, in particular to a bio-based antibacterial fiber fabric and a preparation method thereof. The preparation method comprises the following steps: carrying out a reaction on diisocyanate, polyether polyol, bio-based polyester polyol and hexamidine dihydroxyethyl sulfonate in N, N-dimethylacetamide, so as to obtain a polyurethane prepolymer solution; 2-(4-aminophenyl)-5-aminobenzimidazole and amino-modified nano-zinc oxide are sequentially added into the polyurethane prepolymer solution for a reaction, a prepared polyurethane spinning solution is subjected to dry spinning to prepare polyurethane fibers, and then the polyurethane fibers are sequentially spun into yarn and fabric; the bio-based nylon is subjected to melt spinning to obtain bio-based nylon fibers, and the bio-based nylon fibers are sequentially spun into yarns and fabrics; the bio-based antibacterial fiber fabric is prepared by taking a polyurethane fabric as an inner-layer fabric and taking a bio-based chinlon fabric as an outer-layer fabric, and the fabric is good in antibacterial performance and moisture absorption performance.

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.

The invention discloses a thermal antistatic fabric based on polyamide fibers and a preparation method thereof, and relates to the technical field of textile fibers. When the thermal antistatic fabric based on the polyamide fiber is prepared, caprolactam, a flame retardant and hexamethylenediamine react to prepare pre-modified polyamide; the pre-modified chinlon and 3-chloro-1-propanethiol are subjected to a reaction, and modified chinlon is prepared; the preparation method comprises the following steps: sequentially reacting graphene oxide with mercaptopropyltrimethoxysilane and 2-(2H-benzotriazole-2-yl)-4-methyl-6-(2-propenyl) phenol, so as to obtain modified graphene oxide; the modified chinlon and the modified graphene oxide are mixed and then subjected to melt spinning, and modified chinlon fibers are obtained; and twisting the modified polyamide fiber, spinning, and post-processing to obtain the thermal antibacterial fabric based on the polyamide fiber. The warm-keeping antistatic fabric based on the polyamide fiber has good warm-keeping, antistatic, flame-retardant, anti-aging and mechanical properties.

The present invention relates to the technical field of knitted fabrics, in particular to an antibacterial and anti-ultraviolet bio-based lyocell fabric and a preparation method thereof. The fabric comprises a three-layer composite structure connected by bio-based lyocell yarns: an outer layer is formed by weft-knitting a composite yarn formed by nylon-66 fiber and a first functional fiber, wherein the first functional fiber comprises bio-based lyocell fiber, thermochromic zinc oxide particles, nanosilver / graphene hybrid material, a hydrophobic pore switch polymer, and a cross-linking agent; an intermediate layer is formed by weft-knitting a second yarn formed by a second functional fiber, wherein the second functional fiber comprises bio-based lyocell fiber, temperature-sensitive microcapsules, a humidity-expanding gel, and is composed of an acrylic acid / sodium alginate interpenetrating network; a heat-conducting graphene sheet, and other functional additives; and a third functional fiber in the inner layer comprises bio-based lyocell fiber, Janus-type double-sided microcapsules, a porous graphene framework, a phase change material, and other regulators.

The invention belongs to the technical field of fabrics, and particularly relates to a graphene-based wear-resistant outdoor jacket fabric and a preparation method thereof. The graphene-based wear-resistant outdoor jacket fabric comprises base cloth and a wear-resistant layer on the surface of the base cloth, the base cloth comprises graphene polyamide fibers and polyester fibers; the wear-resistant layer comprises the following raw materials in parts by weight: 3-8 parts of a vinyl silane coupling agent modified wear-resistant agent, 1-4 parts of vinyl POSS, 1-5 parts of an emulsifier, 0.1-0.5 part of a photoinitiator and 100 parts of water; the wear-resistant agent comprises fluorinated graphene and cubic boron nitride. The wear-resistant outdoor jacket fabric provided by the invention has excellent wear resistance, water resistance and soaping resistance.

The utility model relates to the technical field of cloth, and discloses waterproof antistatic coated cloth which comprises a base cloth layer, a plurality of high-strength nylon fibers are fixedly connected to the right side of the inner wall of the base cloth layer at equal intervals, a plurality of cotton fibers are fixedly connected to the top walls of the high-strength nylon fibers, a polyurethane layer is fixedly connected to the top walls of the cotton fibers, and the polyurethane layer is fixedly connected to the right side of the inner wall of the base cloth layer. The top wall of the polyurethane layer is fixedly connected with an antistatic layer, the inner wall of the antistatic layer is fixedly connected with a plurality of conductive fibers, the top walls of the conductive fibers are fixedly connected with a plurality of reinforcing ribs, and the top walls of the reinforcing ribs are fixedly connected with a fluorocarbon resin layer. According to the waterproof antistatic fabric, the basic strength and the softness of the fabric are ensured by the base fabric layer which is interwoven in a plain weaving manner, and the fabric obtains a preliminary waterproof effect under the coating of the polyurethane layer, so that the final waterproof effect and the final antistatic performance are obtained under the connection of the conductive fibers and the fluorocarbon resin material.

The invention provides a nylon 12 fiber easy to dye and a preparation method thereof. The fiber comprises nylon 12 resin and a dyeable agent, and the content of amino-terminated groups of the nylon 12 resin is 2-5 times of the molar content of carboxyl-terminated groups. The preparation method comprises the following steps: mixing, extruding and granulating, melting and spinning, stretching and shaping and post-processing. The nylon 12 fiber is easy to dye and high in color fastness.

The invention discloses a moisture-absorbing breathable polyamide fiber fabric and a preparation method thereof, and relates to the technical field of polyamide fiber fabrics. The method comprises the following steps: preparing a nano silicon dioxide composite template agent, and blending the nano silicon dioxide composite template agent with chinlon slices to prepare modified master batches; after special-shaped hollow spinning and weaving, a pore-foaming agent is dissolved out through hot water treatment, and a porous structure is constructed in the fiber; then carrying out plasma activation on the fabric, and grafting monomers such as acrylic acid, acrylamide and stearyl methacrylate on the surface and in pores of the fiber by adopting a radiation grafting method to form a hydrophilic-hydrophobic dual-channel structure; then, pre-crosslinked composite particles prepared from chitosan, beta-cyclodextrin and the like are loaded in micropores of the fabric through a vacuum-positive pressure circulation process; and finally, treating by using a finishing liquid containing blocked isocyanate, and carrying out heat setting. The prepared fabric has high moisture absorption rate, large moisture absorption capacity and excellent wet air permeability, is washable and anti-yellowing, and is suitable for high-performance sports and outdoor clothes.

The present invention provides an automotive wiring harness tape and a preparation method thereof. The wiring harness tape consists of a shielding layer and a rubber coating layer. The shielding layer is prepared from materials such as polyester fiber, nylon fiber, glass fiber, carbon fiber and conductive composite fiber, and has excellent electromagnetic shielding capabilities. The rubber coating layer is formed by mixing an antioxidant, a light stabilizer and silicone rubber, which effectively reduces the VOC release of the tape while ensuring good aging resistance and mechanical properties. The preparation method includes the steps of fiber mixing, heat setting treatment, rubber coating layer preparation and cutting. By precisely controlling the proportion of each component and process parameters, the continuity and stability of the tape are ensured. The automotive wiring harness tape of the present invention not only has excellent electromagnetic shielding performance, but also has good low fogging and mechanical properties, and is suitable for complex automotive electromagnetic environments.

The invention provides a long-acting antibacterial chinlon composite fiber and a preparation process thereof, and belongs to the technical field of composite fibers. The preparation process comprises the following steps: preparing the modifier; preparing modified graphite; preparing the antistatic modified polyamide fiber; preparing an antibacterial treatment solution; and preparing the chinlon composite fiber. Cyanuric chloride and N, N-dimethyl propane diamine react to generate an intermediate, then the intermediate and 1, 3-propane sultone react to generate an antibacterial agent, the antibacterial agent is prepared into an antibacterial treatment solution, and after the antibacterial treatment solution is added into the pretreated antistatic modified polyamide fibers, the antibacterial agent can be connected to the surfaces of the fibers, so that the antistatic property of the fibers is improved. The anti-static modified polyamide fiber has better washing-resistant and antibacterial properties by adding the antibacterial agent into the polyamide fiber, and then the washing-resistant and antibacterial properties of the antibacterial agent can be further improved after bond energy is enhanced through heat treatment, so that the prepared polyamide composite fiber has a long-acting antibacterial effect.

The invention relates to the field of fabrics, in particular to a highly wear-resistant and waterproof fabric for outdoor use and a travel bag prepared therefrom. Nylon fiber and polyester fiber are selected as first warp threads and first weft threads, and the warp and weft threads are interwoven to obtain a base fabric; hemp fiber and nylon fiber are blended as second warp threads, and the blended fibers are interwoven with second weft threads of one of basalt fiber, bamboo charcoal fiber and hemp fiber to obtain a reinforced fabric; the base fabric and the reinforced layer are woven together by using nylon fiber to obtain a fabric body; the fabric body is subjected to a double-immersion and double-rolling treatment by using a fluorine-free waterproof finishing liquid, and then subjected to a light curing treatment.

The invention relates to the field of shirt fabrics, and discloses a novel antistatic and breathable wool worsted shirt fabric and a production method of the novel antistatic and breathable wool worsted shirt fabric. Comprising the following raw materials in parts by weight: 45-55 parts of wool fibers, 5-8 parts of graphene modified polyester fibers, 1-2 parts of carbon nanotube modified wool, 8-12 parts of hemp fibers, 3-5 parts of aerogel polyamide fibers, 1-2 parts of silver zeolite composite particles, 10-15 parts of chitosan quaternary ammonium salt viscose fibers, 2-3 parts of a fluoride-free super-hydrophobic nano coating (o.w.f) and 5-10 parts of sulfobetaine modified polyamide. The graphene modified polyester fiber and the carbon nanotube modified wool are mixed, a continuous and stable conductive network is formed in the fabric by utilizing high conductivity of graphene and excellent electron transmission capability of carbon nanotubes, charge accumulation is reduced essentially, and uniform distribution of the conductive fiber is ensured by adopting a siro spinning technology.

The invention relates to the technical field of polyamide fiber manufacturing, and provides a porous polyamide fiber preparation method which comprises the following steps: respectively feeding skin layer polyamide, a cross-linking agent and core layer polyamide into a mouth mold; the pore-foaming agent is decomposed to generate gas, and the gas forms a uniform closed-pore structure in situ on the core layer chinlon; in the fusion cavity, the cross-linking agent is sandwiched between the core layer chinlon and the skin layer chinlon to generate a chinlon material with a skin-core chinlon cross-linked structure; after being pulled out through a spinning nozzle, the chinlon material is bundled through an oiling roller, and after oiling, chinlon fiber tows are formed; the polyamide fiber tows are subjected to graded stretching and winding forming, and finished polyamide fiber products are obtained. Therefore, a uniform closed pore structure is formed in the core layer chinlon through the gas decomposed by the pore-forming agent; a skin-core chinlon cross-linked structure with chemical bonding and low-heat-conduction network functions is formed between the core layer and the skin layer through a cross-linking agent. The thermal conductivity and the weight of the polyamide fiber are remarkably reduced, meanwhile, the polyamide fiber has high strength, and the light and warm-keeping polyamide fiber is obtained.

The invention relates to the technical field of high polymer materials and synthetic fibers, and particularly discloses a high-wear-resistance polyamide fiber and a preparation method thereof. The fiber is prepared by taking polycaprolactam as a matrix, compounding spherical nano silicon carbide and molybdenum disulfide nanosheets as wear-resistant components, taking a maleic anhydride grafted hydrogenated styrene-ethylene-butadiene-styrene block copolymer as an interface compatilizer, and taking hyperbranched polyamide-amine as a dispersing agent. The polyester fiber is prepared through the processes of master batch preparation, melt spinning, multi-stage hot drafting and relaxation heat setting. Through the synergistic effect of all the components and the optimization process, the wear resistance of the fiber is remarkably improved, and meanwhile, the common problems of toughness reduction and fatigue resistance deterioration in high-wear-resistance modification are effectively solved. The polyamide fiber is tough and durable, is specially used for manufacturing high-safety-requirement products such as mountaineering ropes, rescue ropes and industrial lifting belts, and can reduce the fracture risk in repeated use and guarantee the use safety.

The application relates to the field of nylon fiber processing, and discloses a preparation device for high-strength nylon fibers, which comprises a cleaning chamber, a drying chamber fixedly connected to one side of the cleaning chamber, a cleaning mechanism arranged in the cleaning chamber, a drying mechanism arranged in the drying chamber, a tension control mechanism arranged at the middle part of the right end of the drying chamber, a broken wire alarm mechanism arranged at the upper side of the right end of the drying chamber, two fixing tables of the cleaning mechanism, the fixing tables being fixedly connected to the inner sides of the cleaning chamber, and rotating rings movably connected to the inner side ends of the fixing tables. The cleaning mechanism and the drying mechanism are added, the nylon fibers can be strongly cleaned before being stretched, the dirt remaining on the surface can be removed, the drying mechanism can gradually heat and dry, the internal structure of the material can be prevented from being damaged, the nylon fibers can be preheated, the stretching performance and the plasticity of the nylon fibers can be improved, and the strength of the finished product can be improved.

The present invention discloses a novel fine-denier special-shaped cross-section nylon fiber and a production process, and relates to the technical field of nylon fiber production. The nylon fiber includes a hollow triangular cross-sectional structure, which is the main body of the nylon fiber. A circular cross-sectional structure is arranged inside the hollow triangular cross-sectional structure, and diamond cross-sectional structures are arranged at the three vertex positions of the hollow triangular cross-sectional structure. When the circular cross-sectional structure serves as the core of the hollow triangular cross-sectional structure, the structural strength of the nylon fiber is effectively improved, and the nylon fiber has good breaking strength and breaking elongation. The diamond cross-sectional structures are arranged at the three corners of the hollow triangular cross-sectional structure as a trifoliate structure, so that the nylon fiber has good cohesion and is bulky and full. At the same time, the inclined surface of the diamond cross-sectional structure cooperates with the inclined surface of the hollow triangular cross-sectional structure to produce a "flash" effect, presenting a silk luster.

The wear-resistant antistatic garment fabric comprises a wear-resistant layer, a conductive transition layer and a comfortable substrate layer which are sequentially compounded from outside to inside, and is characterized in that the wear-resistant layer is of a nylon fiber woven structure, the single yarn fineness of the wear-resistant layer is 80-150D, the surface of the wear-resistant layer is coated with a polyurethane-silicon carbide composite coating, the thickness of the coating is 10-30mu m, and the thickness of the coating is 10-30mu m; the conductive transition layer is of a polyester filament yarn embedded graphene woven structure, and the comfortable substrate layer is of a silver ion fiber blended knitted structure, so that the problem that the fabric is common in comfort is solved. According to the technical scheme, the wear-resistant antistatic garment material is provided. By adopting the nylon fiber woven structure and the polyurethane-silicon carbide composite coating, the wear resistance of the fabric is remarkably improved while the softness of the fabric is kept, a graphene network and a polypyrrole coating layer in the conductive transition layer form an efficient static conduction channel, static electricity generated on the fabric can be conducted out in time, and the wear resistance of the fabric is improved. Static accumulation is avoided, and wearing comfort and safety are improved.

The invention discloses a modified chinlon chemical fiber strength detection device based on an intelligent sensor, and relates to the technical field of material science and engineering. Through the arrangement of the detection device, after the two ends of a chinlon chemical fiber are fixed respectively, the chinlon chemical fiber is fixed through a pressing plate and a winding cylinder, and skid resistance is achieved; the chinlon chemical fibers can be kept stable in the detection process, repeated operation caused by sliding is reduced, the detection efficiency is improved, after the chinlon chemical fibers are fixed, the chinlon chemical fibers are placed into the inner wall of the positioning cylinder to be positioned on the upper side and the lower side, otherwise, the chinlon chemical fibers possibly deform or break in the unexpected direction, and the detection accuracy is improved. The strength performance of the chinlon chemical fibers under the normal use condition cannot be truly reflected, after the chinlon chemical fibers on the two sides are fixed, the driving rod rotates to enable the mounting bases on the upper side and the lower side to move back to back, the chinlon chemical fibers are detected, and data are fed back to the control panel in real time through the pressure sensor.

The invention relates to an automatic catkin cleaning device for a transformer cooler, and provides a mechatronics solution for solving the problems that existing catkin cleaning depends on manpower, efficiency is low, coverage is incomplete, and secondary pollution is caused. The device comprises a transformer cooler main body and an automatic cleaning device, an electric rolling brush mechanism is cooperatively driven through a first electric sliding table and a second electric sliding table which are distributed in parallel, and a 1200 * 3000mm core area is covered; the design that the anti-static nylon fiber brush is combined with the rolling brush with the diameter of 210 mm is adopted, the dust screen is automatically cleaned in the whole process, the cleaning efficiency is improved, meanwhile, workers do not need to climb or make close contact with electrified equipment, and the electric shock risk in traditional manual cleaning is avoided.

The invention discloses a superfine denier nylon cotton-feeling fabric and a preparation method thereof, and the preparation method sequentially comprises the following steps: yarn configuration and weaving: weaving is carried out by adopting warp yarns and weft yarns, the weft yarns are nylon air textured yarns (ATY), and the weft yarns are prepared by FDY filaments with the filament number of not more than 10D through air texturing processing; the dyed fabric is subjected to padding treatment, adopted finishing liquid contains waterborne polyurethane and a fluoride-free waterproof agent, baking shaping is conducted after padding, and the fabric is subjected to humidifying and moisture regaining treatment during fabric discharging. According to the superfine denier nylon cotton feeling fabric and the preparation method thereof, the touch feeling of the nylon fabric is improved through the specific yarn structure design and the synergistic after-finishing technology, so that the nylon fabric has the soft comfort close to that of a cotton fabric, and meanwhile, the characteristics of high wear resistance and high strength of nylon fibers and the effective fluoride-free waterproof performance are kept.

The utility model discloses a double-sided flocked fabric, including a flocking base layer, one side of the flocking base layer is provided with a first fluff layer through a first flocking adhesive layer, and the other side is provided with a second fluff layer through a second flocking adhesive layer; the flocking base layer blocks the transfer of moisture from one side to the other side; the first fluff layer uses coarse denier nylon fiber with a fineness of 2.5D-5D and a length of 3-5mm; the second fluff layer uses ultra-fine denier viscose fiber with a fineness of 0.6-1.1dtex and a length of 1-2mm. The double-sided flocking fabric involved in the utility model uses coarse denier nylon fiber on one side, which can be used to wipe stubborn stains. The other side uses ultra-fine denier viscose fiber, which has a strong moisture absorption effect and can be used for drying after wiping. And the flocking base layer blocks moisture, so that when wiping on one side, moisture will not be transferred to the other side.

Embodiments of the present invention replace at least some flame retardant fibers (e.g., aramid fibers) in wadding traditionally used for thermal insulation liners with thermally stable polyamide fibers (e.g., nylon fibers). The TPP performance of garments incorporating thermal liner embodiments encompassed herein is comparable to garments formed with conventional thermal liners, even without being improved.

The application discloses a two-component nylon elastic yarn and a manufacturing process thereof, and relates to the technical field of textiles.The two-component nylon elastic yarn comprises an elastic yarn body which is composed of a yarn core and an outer surface layer arc ring part; the yarn core is a nylon polymer fiber; the outer surface layer arc ring part is an outer nylon fiber; and the elastic yarn body is obtained by blowing ATY yarn according to a blowing ratio of 1:0.8-2.8 between the nylon polymer fiber and the outer nylon fiber.The elastic yarn body is obtained by condensation of modified hexanediamine as monomer one and modified heptanedioic acid as monomer two, so that the stability of the elastic yarn body is increased, the dyeing temperature of the elastic yarn body is increased due to the π bond effect, the dyeing uniformity and elasticity are effectively improved, and the effect of high-temperature setting is suitable.

The utility model discloses a high-strength durable polyester fabric, and relates to the technical field of polyester fabrics. According to the key points of the technical scheme, the wear-resistant floor comprises a base layer, a plurality of through grooves are formed in the base layer, supporting pieces extending into the through grooves are fixedly connected to one side of the base layer, the thickness of the supporting pieces is smaller than the depth of the through grooves, and wear-resistant pieces with the same relative positions as the through grooves are fixedly connected to the other side of the base layer. One side, close to the base layer, of the wear-resisting piece is fixedly connected with a contact piece extending into the through groove, a plurality of deformation spaces are formed between the contact piece and the supporting piece, and a movable space is formed between the contact piece and the supporting piece. Therefore, the overall wear resistance and durability of the fabric are enhanced through the characteristics of the polyamide fibers.

The present application relates to a kind of high adhesive composite material for rubber dam and its preparation method, it is related to rubber dam technical field, wherein the high adhesive composite material for rubber dam includes the weatherproof layer of outer layer, the reinforcing layer of middle, inner layer self-repairing layer, by mass fraction, the weatherproof layer includes 90-110 parts high saturated nitrile rubber, 23-28 parts carbon black N550, 3-8 parts nano TiO2, 1-3 parts antioxidant 1010, 2-3 parts of dicumyl peroxide, the reinforcing layer includes 60-80 parts of ethylene-propylene-diene rubber, 25-35 parts of butadiene-styrene rubber, 13-15 parts, nylon fiber, 10-12 parts aramid fiber, 12-15 parts carbon black, 0.5-1.5 parts graphene, 1-2 parts of sulfur, 0.5-1.5 parts of accelerator CZ, the self-repairing layer includes 90-100 parts of silicone rubber, 5-10 parts nano SiO2, 5-8 parts self-repairing agent, 0.1-0.3 parts dispersant.The high adhesive composite material for rubber dam of the present application has good adhesion, can repair small crack in time, prevent the further expansion of crack.

The present invention discloses a method for preparing sunscreen fibers with aluminum and cerium co-doped zinc oxide quantum dots. By utilizing the local surface plasmon resonance of metal oxides to enhance the emissivity of the polymer substrate, a relatively high radiation cooling power is obtained. At the same time, the co-doped zinc oxide quantum dots have a relatively high ultraviolet absorption rate. Through a special shear oscillation melt extrusion process, the uniform dispersion of zinc oxide in nylon fibers is achieved. When the prepared fibers are irradiated by sunlight, the measured value of UPF is greater than 50, and the transmittance of UVA is less than 5%, meeting the requirements of ultraviolet protection products. In addition, when irradiated by the sun, the maximum temperature difference between the inside and outside of the zinc oxide nylon fibers reaches 4°C, showing an obvious cooling effect. The present invention has wide applications in sunscreen clothing.