193 results about "Nylon fiber" patented technology

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 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 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 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 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 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.

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 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 invention relates to the technical field of high-performance polyester, and discloses a moisture-absorbing and sweat-releasing braid, a preparation method thereof and application of the moisture-absorbing and sweat-releasing braid in underwear shoulder straps. The preparation method of the moisture-absorbing and sweat-releasing braid comprises the following steps: combining a guanidyl polymer with a modified quaternary ammonium salt compound to obtain a bi-component organic antibacterial agent; grafting a bi-component organic antibacterial agent to the modified composite inorganic antibacterial material to obtain an antibacterial modifier; mixing the polyester master batch and the antibacterial modifier, and carrying out melt spinning to obtain the modified profiled polyester fiber; the modified profiled polyester fibers are spun into modified polyester yarns, the nylon 6 fibers are spun into nylon yarns, and then the moisture absorption and sweat releasing braid is woven. The moisture absorption and sweat releasing braid made of the modified polyester fibers and the nylon fibers not only has the advantages of being good in mechanical property, high in elasticity, resistant to wear and skin-friendly, but also has excellent moisture absorption and sweat releasing performance and lasting antibacterial performance, and when the braid is used in underwear shoulder straps, comfortable, healthy and safe wearing experience can be provided for wearers.

This application relates to the field of webbing, and discloses a silk webbing. A silk webbing is woven and heat-set from a blended yarn containing silk fibers. The blended yarn is made from 55-60 wt% pretreated silk fibers, 18-23 wt% spandex fibers, and 19-24 wt% nylon fibers. The pretreated silk fibers are obtained by sequentially soaking, enzymatically hydrolyzing, fluffing, and drying the silk fibers. This application, through pretreatment of the silk fibers, produces a silk webbing with good breathability, softness, and shape retention. When used in underwear shoulder straps, it is less prone to deformation and shrinkage after long-term wear and washing, and it is less likely to cause sweating and skin irritation, thus improving comfort in contact with the skin.

The utility model relates to the technical field of canvas, in particular to anti-condensation moisture-resistant canvas which comprises a lining layer, heat preservation layers are bonded to the two sides of the lining layer respectively, a tensile layer is bonded to the side, away from the lining layer, of each heat preservation layer, and a moisture-resistant layer is bonded to the side, away from the corresponding heat preservation layer, of each tensile layer. A hydrophobic layer is bonded to the side, away from the tensile layer, of the moisture-resistant layer, the lining layer is formed by spinning doubling threads formed by mixing nylon fibers and polyester fibers, the mixing ratio of the nylon fibers to the polyester fibers is 2: 1, the heat preservation layer is formed by blending polyester fiber cotton and wool, and the blending ratio of the polyester fibers to the wool is 5: 1. And the tensile layer is formed by blending aramid fibers and polyester fibers. According to the anti-condensation canvas, the anti-condensation effect of the surface of the canvas can be improved through the canvas formed by compounding multiple layers, so that the influence and interference of condensation on a canvas product are reduced, and meanwhile, the moisture resistance of the canvas can be further improved.

The invention relates to a full fabric electrode-skin sensing array. The array comprises a front end angle interlocking structure and a rear end angle interlocking structure, and a spacing layer and an electrode layer are arranged between the front end angle interlocking structure and the rear end angle interlocking structure; wherein the spacing layer is located 0.5 mm-1. 5mm above the electrode layer, the left sides of the spacing layer and the electrode layer are connected through a front end angle linkage structure, and the right sides of the spacing layer and the electrode layer are connected through a rear end angle linkage structure; spacing layer holes are distributed in the spacing layer in a matrix manner; an array electrode of the electrode layer is prepared from silver-plated nylon fibers and nylon fibers; nylon yarns are arranged in the warp direction; silver-plated nylon yarn is only located under the projection of the holes in the spacing layer in the weft yarn direction. And the rest is nylon yarns. While excellent wearing comfort is kept, accurate detection of physiological signals such as limb movement and plantar pressure distribution can be achieved, and the intelligent health monitoring system is suitable for long-term and continuous health state monitoring scenes.

The invention discloses a processing method of high-solarization durable anti-ultraviolet functional knitted fabric, which comprises the following steps: preparing chinlon yarn with a core-sheath structure, a core layer of the chinlon yarn is full-dull chinlon in which nano titanium dioxide particles are uniformly dispersed, and a sheath layer comprises the following components in percentage by mass: 75-87% of chinlon fiber, 10-20% of rare earth oxide and 3-5% of coating agent, the mass ratio of the sheath layer in the chinlon yarn is 20-30%; performing ultrahigh stitch length weaving; and dyeing treatment. The knitted fabric woven by the method is compact in structure, good in uniformity and low in porosity, has excellent anti-ultraviolet performance, high light fastness and durability, can realize UPF100 < + >, high light fastness greater than or equal to 4-5 levels, T (UVA) AV < 4%, still keeps excellent anti-ultraviolet performance, color fastness and mechanical properties after long-term solarization and multiple washing, and has a wide application prospect. Unification of anti-ultraviolet functionality and durability is achieved, the service life of the fabric is long, and permanent and efficient sun protection can be provided for the human body.

The application relates to the technical field of silica gel, and discloses a preparation process of a silica gel-nylon composite material with high bonding strength, which comprises vinyl polydimethylsiloxane, glycidyl ether-based organosilicon polyamide, hydrogen-containing silicone oil, tackifier and alkyne alcohol inhibitor. The glycidyl ether-based organosilicon polyamide contains an epoxy group, can react with terminal amino groups in nylon polyamide molecular chains in a nylon fiber membrane, simultaneously contains an amide group, can interact with amide bonds in the nylon polyamide molecular chains through hydrogen bonds, significantly improves the bonding force and bonding strength between the silica gel adhesive and the nylon fiber membrane, and exhibits higher peel resistance and bonding performance. The glycidyl ether-based organosilicon polyamide has both rigid polyaramid structures and flexible siloxane structures, is beneficial to improving the tensile performance and tear strength of the adhesive, and exhibits higher mechanical performance.

This utility model discloses a pleated jacquard digital printing fabric, relating to the field of fabric technology. The key technical points are: it includes a base layer, on which several printing groups are fixedly connected; several through grooves are formed on the base layer; a wear-resistant sheet corresponding to each through groove is fixedly connected to the side of the base layer away from the printing groups; a support block is fixedly connected to the side of the wear-resistant sheet away from the base layer; and a support piece corresponding to each wear-resistant sheet is fixedly connected to the side of the base layer away from the printing groups. The support piece has a convex cross-sectional shape and lifts the support block so that the center of the wear-resistant sheet passes through the through groove. The wear-resistant sheet in this utility model uses nylon fiber, which has good abrasion resistance, increasing the abrasion resistance of the wear-resistant sheet and effectively extending its protection time for the printing components, thereby improving the overall durability of the fabric.

The utility model discloses an anti-cutting fabric for camouflage clothes, which belongs to the technical field of camouflage fabrics and comprises a camouflage fabric layer and an anti-cutting fabric layer which are compounded with each other. The camouflage fabric layer comprises a chinlon fabric base layer, and a camouflage printing layer is arranged on the surface of one side, far away from the anti-cutting fabric layer, of the chinlon fabric base layer; the anti-cutting fabric layer is formed by interweaving anti-cutting core-spun yarn, and the anti-cutting core-spun yarn comprises core yarn, and first wrapping silk yarn and second wrapping silk yarn which wrap the outer side of the core yarn and are arranged in opposite directions; the core yarn is an ultra-high molecular weight polyethylene filament, the first wrapping silk yarn is a PTFE split film filament, and the second wrapping silk yarn is an aramid fiber 1414 filament. According to the anti-cutting fabric for the camouflage clothes, the nylon fabric base layer adopts the nylon fibers, so that the anti-cutting fabric has a good wear-resistant effect. The ultra-high molecular weight polyethylene filaments, the high-strength polyester filaments and the aramid fiber 1414 filaments are used in the cut-resistant fabric, so that the fabric has a good cut-resistant effect.

The invention discloses a cool regenerated colored polyamide fiber and a preparation method thereof, and belongs to the technical field of chemical fiber preparation. The preparation method comprises the following steps: firstly, melting and spinning cool master batch, regenerated chinlon chips and other raw materials to prepare cool regenerated chinlon POY (Polyester Pre-Oriented Yarn) fibers; meanwhile, melt spinning is conducted on the color master batch, the regenerated chinlon slices and other raw materials, and stock solution coloring regenerated chinlon POY fibers are prepared; and finally, stranding the two functional POY fibers through a false twist texturing process to prepare the cool regenerated colored chinlon DTY fiber. By means of the step-by-step spinning and plying elasticizing integrated technology, the cool feeling, coloring and regeneration environment-friendly characteristics are combined in the fiber manufacturing stage, and the final product has the comprehensive advantages of being excellent in cool feeling durability, high in color fastness, simplified in production technology and environmentally friendly.

The utility model relates to the technical field of textile processing, and particularly discloses a copper antibacterial polyamide fiber processing device which comprises a melting barrel, a driving assembly is arranged on the melting barrel, a heating shell is fixed outside the melting barrel, a heating rod is arranged between the heating shell and the melting barrel, the front end of the melting barrel is fixedly communicated with a spinning cylinder, and the spinning cylinder is fixedly communicated with a spinning nozzle. A spinneret plate provided with a plurality of spinneret micropores is mounted at the front end of the spinneret cylinder, and a dredging assembly used for dredging the spinneret plate is arranged at the front end of the spinneret plate; the dredging assembly comprises a slidable heating piece, a plurality of microneedles are arranged on the side, facing the spinneret plate, of the heating piece, and the positions of the microneedles correspond to the positions of the spinneret micropores in a one-to-one mode. Under the action of the conveying lead screw, the heating piece can be pushed to one side of the spinneret plate, the spinneret plate is heated through the heating piece, meanwhile, the spinneret plate is dredged through the microneedle, and the spinneret plate does not need to be detached.

The invention discloses a three-dimensional warm-keeping flocculus with far infrared temperature rise and windproof performance and a preparation method of the three-dimensional warm-keeping flocculus. The three-dimensional warm-keeping flocculus comprises a first polyimide nanofiber layer, a far infrared temperature rise modified nylon fiber layer and a second polyimide nanofiber layer which are sequentially stacked from top to bottom, the far infrared temperature rise three-dimensional warm-keeping flocculus is prepared from a first polyamide acid nanofiber membrane, a far infrared temperature rise modified nylon fiber assembly and a second polyamide acid nanofiber membrane which are stacked in sequence. The far infrared temperature rise modified nylon fiber assembly is prepared from modified nylon fibers and polyamide acid nanofibers, and the modified nylon fibers are prepared from nylon slices, nano inorganic ceramic powder particles and inorganic nano SiO2 powder. The warm-keeping flocculus is good in structural stability, has far infrared temperature rise and windproof functions, is good in warm-keeping performance, is better in overall mechanical property, is simple to prepare, and is easy to realize large-scale production, and different components of the flocculus form crosslinking combination.

The present application relates to the field of textile printing and dyeing technology, and more particularly to an environmentally-friendly dyeing process for nylon fibers, comprising the following steps: S1, pretreatment; S2, ultrasonic-assisted low-temperature dyeing; S3, integrated treatment of phased temperature control and color fixing; S4, post-treatment; S5, drying and setting. The present application adopts the combination of ultrasonic-assisted dispersion, composite levelling agent synergy and phased temperature control, solves the long-standing problems of color mottle and color difference in nylon low-temperature dyeing, increases the one-time success rate of dyeing, almost eliminates the need for rework, and greatly improves the production efficiency. At the same time, the core dyeing temperature is reduced from the traditional high-temperature process of 95-100 DEG C to 65-75 DEG C, with a cooling range of 20-30 DEG C, which reduces the comprehensive energy consumption, greatly reduces the steam and power consumption, and fully meets the development of the textile industry.

The application provides a low-melting-point polyamide fiber and a preparation method thereof. The fiber is prepared by melt blending, spinning and forming of polyamide chip, 1-5wt% of a metal ion compound, 0.5-2wt% of nanoparticles and a stabilizer; the metal ion coordinates with the polyamide amide group to destroy the hydrogen bond network, the nanoparticles regulate the crystallization behavior, and the synergistic effect reduces the melting point of the fiber to 160-180 DEG C, while the strength is greater than 4 cN / dtex. The polyamide fiber has stable performance, low melting point and excellent mechanical properties, the process is simple and controllable, the problems of high melting point of traditional polyamide fiber, mechanical property reduction of existing modification method or complex process are solved, and the polyamide fiber is suitable for low-temperature processing scenes such as textiles, clothes and medical supplies, and has industrial application value.

The invention discloses calcium chloride powder modified nylon 66. The calcium chloride powder modified nylon 66 is obtained by spinning nylon 66 and calcium chloride powder through melt spinning. The CaCl2 can effectively reduce the crystallization rate and crystallinity of the PA66, the elongation at break of the PA66 fiber is remarkably improved along with the increase of the content of the CaCl2, and when the addition content of the CaCl2 is 1%, the fiber is changed from non-drafting to drafting, and the breaking strength of the drafted PA66 fiber is greatly improved.

This invention discloses a moisture-wicking and antibacterial multilayer chemical fiber composite fabric and its preparation method, belonging to the field of functional textile fabric technology. The invention comprises a 28%-32% close-fitting moisture-wicking layer; the close-fitting moisture-wicking layer comprises 64%-68% cross-section polyester fiber, 25%-29% polypropylene fiber, and 4%-6% spandex fiber; a 33%-37% interfacial antibacterial moisture-wicking layer; the interfacial antibacterial moisture-wicking layer comprises 60%-66% moisture-wicking bridging yarn, 26%-32% antibacterial anchoring yarn, and 6%-10% hot-melt polyester bonding fiber; and a 29%-34% outer diffusion layer; the outer diffusion layer comprises 70%-76% hydrophilic modified polyester fiber, 20%-26% nylon fiber, and 3%-5% spandex fiber. This invention achieves a partitioned arrangement of moisture-wicking components, antibacterial components, and adhesive components by setting a predetermined position for the main moisture channel and an antibacterial anchoring area in the interface antibacterial moisture-wicking layer, configuring the moisture-wicking bridging yarn in the predetermined position for the main moisture channel, and configuring the antibacterial anchoring yarn and hot-melt polyester bonding fiber in the antibacterial anchoring area, so that the main moisture channel connects the close-fitting moisture-wicking layer, the interface antibacterial moisture-wicking layer, and the outer diffusion layer.

The utility model discloses a light, thin and warm-keeping quilting fabric which comprises a fabric body (1), the fabric body (1) comprises a surface layer (2) and an inner layer (3), the surface layer (2) is made of densely-woven polyester fibers or nylon fibers, the inner layer (3) is made of bamboo fibers or modified fibers, and the thickness of the surface layer (2) and the thickness of the inner layer (3) range from 0.5 mm to 3 mm; a filling layer (4) is arranged between the surface layer (2) and the inner layer (3), the filling layer (4) is superfine fiber cotton, goose down, imitation goose down or a combination of the superfine fiber cotton, the goose down and the imitation goose down, and the thickness of the filling layer (4) is 2-20 mm; and the surface layer (2), the filling layer (4) and the inner layer (3) are fixed through a quilting process. The utility model not only can ensure light weight and warmth retention, but also has the advantages of better comfort, better air permeability, better waterproofness, better antibacterial property and better aesthetic property.

The invention provides a strong-conjugation high-polarity ultraviolet absorbent as well as a preparation method and application thereof. According to the invention, a triazine derivative structure of a hyperconjugated system of (para-ester-triazine-BP-2-triazine-para-ester) is designed, the conjugated system is extended, charges in molecules are transferred, an ultraviolet absorption spectrum is widened, and an ultraviolet light absorber with a strong absorption effect on UVA and UVB is formed. The para-ester is introduced into the ultraviolet absorbent, and the vinyl sulfone group of the para-ester can be subjected to Michael addition reaction with amino (-NH2) in nylon to form a stable covalent bond, so that the ultraviolet absorbent is firmly combined on nylon fibers, and the washability is enhanced.

According to the normal-temperature and normal-pressure dyeable polyester fiber and chinlon composite yarn one-bath-process dyeing method, normal-temperature and normal-pressure dyeable polyester fibers are adopted to replace conventional polyester, synchronous one-bath-process dyeing of polyester and chinlon composite yarn under the normal-pressure condition is achieved, and the technical problem caused by the difference of the dyeing characteristics of two kinds of fibers in a traditional technology is solved. A traditional multi-step two-bath method is integrated into one step, so that the technological process is shortened by more than 50%, and the production efficiency is greatly improved. High-temperature and high-pressure equipment is not needed, and the replacement frequency of the dye liquor is reduced, so that the steam energy consumption is reduced by about 40%, the water consumption and the wastewater discharge amount are reduced by about 35%, and the green manufacturing requirement is met. The mild dyeing conditions of the process effectively protect the mechanical properties of the polyamide fibers, so that the strength retention rate of the polyamide fibers is increased by 15% or above, and excellent leveling property and color fastness are ensured. The operability and reproducibility of the process are also enhanced by the single-bath process, and a reliable guarantee is provided for large-scale stable production.