823 results about "Silk fiber" patented technology

The invention relates to the technical field of non-woven fabrics, in particular to a production process of a functional fiber woven non-woven fabric body, the non-woven fabric body comprises a non-woven fabric base body, middle layers are arranged on the upper portion and the lower portion of the non-woven fabric base body, and outer layer bodies are arranged on the outer sides of the middle layers; the middle layer is compounded with the upper part and the lower part of the non-woven fabric base body through polyurethane glue, and the dosage of the polyurethane glue is 20g / m < 2 >; the non-woven fabric body is formed by mutually matching a non-woven fabric base body, a middle layer and an outer layer body, the non-woven fabric base body is formed by weaving first modified spandex fibers and polyester fibers, the middle layer is formed by interweaving second modified polyester fibers and hemp fibers, and the outer layer body is formed by spraying an outer layer agent. The product is excellent in wear resistance, stain resistance, heat preservation and breaking strength, remarkable in comprehensive coordination effect and excellent in washing resistance and ultraviolet stability resistance.

The invention discloses an improved protein kapok silk fiber material and a preparation method thereof, and belongs to the technical field of natural fiber modification. Comprising the following steps: soaking pretreated kapok fibers obtained by soaking kapok fibers in an alkaline solution in an oxidizing agent solution to obtain oxidized kapok fibers; dipping the oxidized kapok fiber in a polyacrylic acid-levodopa solution, adding a diamine cross-linking agent, and mixing to obtain polyacrylic acid-levodopa modified kapok fiber; the polyacrylic acid-levodopa modified kapok fibers are soaked in the impregnation liquid, and the improved protein kapok silk fibers are obtained. The improved protein kapok fiber yarn fiber material prepared by the preparation method disclosed by the invention has good waterproof performance, mechanical strength and softness.

The invention relates to the technical field of high-performance polyester fibers, and discloses a dry skin-friendly fiber fabric, a preparation method thereof and application of the dry skin-friendly fiber fabric in underwear. The preparation method of the dry and comfortable skin-friendly fiber fabric comprises the following steps: carrying out reaction on terephthalic acid, ethylene glycol and an antibacterial modified diamide diol monomer to obtain modified polyester; the modified polyester and the polyester master batch are mixed and spun, and the modified profiled polyester fiber is obtained; dipping the modified profiled polyester fiber in a finishing liquid containing a biopolymer finishing agent to obtain the high-performance polyester fiber, blending and knitting high-performance polyester fibers, cotton fibers and mulberry silk fibers to obtain a dry skin-friendly fiber fabric; the dry and comfortable skin-friendly fiber fabric has excellent antibacterial performance, moisture absorption performance and skin-friendly performance, the skin can be kept dry and comfortable, safe and comfortable wearing experience is provided for a wearer, and the dry and comfortable skin-friendly fiber fabric can be used for underwear and other underwear materials.

The invention discloses a preparation method of visible-light-cured fibroin / sericin protein hydrogel, silk fibers containing different amounts of sericin are obtained by adjusting the concentration of a degumming reagent and the degumming time, the silk fibers are directly dissolved to prepare a fibroin / sericin protein composite aqueous solution by a one-step method, extra extraction of sericin or addition of sericin protein powder is not needed, and the preparation method is simple and convenient. The cost is reduced while the preparation process is greatly shortened; environment-friendly and nontoxic riboflavin (vitamin B2) is used as a photoinitiator, and crosslinking can be initiated under visible light without using ultraviolet light; the visible light curing fibroin / sericin hydrogel makes full use of respective performance advantages of silk fibroin and sericin in silk fibers, is safe in components, free of additional chemical cross-linking agents, good in light transmission, good in biocompatibility, high in elasticity, especially suitable for the field of biomedical materials, short in preparation process, short in time consumption and high in efficiency.

A terry fabric includes a first side configured to exhibit absorbency capabilities and a second side configured to exhibit cooling capabilities. The first side can include a spun fiber loop including a plurality of pile warp yarn, and the second side can include a plurality of weft yarn and a plurality of ground warp yarn, wherein at least one of the plurality of weft yarn and the plurality of ground warp yarn includes synthetic filament yarn.

The utility model provides a quick-dry cool stiff and smooth warp knitting fabric, which is formed by knitting at least two guide bars GB1 and GB2, yarns adopted by the guide bar GB1 are high mechanical elasticity synthetic fiber filaments with circular or special-shaped sections, the crimp shrinkage rate of the high mechanical elasticity synthetic fiber filaments must be greater than 25%, and the crimp shrinkage rate of the high mechanical elasticity synthetic fiber filaments must be greater than 25%. Yarns adopted by the GB2 guide bar are elastic polyurethane filaments, the thickness of the high-mechanical-elasticity synthetic fiber filaments is 20-50D, and the thickness of the elastic polyurethane filaments is smaller than or equal to 55D. The high-mechanical-elasticity synthetic fiber filaments with the special-shaped cross sections are adopted, the contact area between fibers and air is large, diffusion and evaporation of water on the surfaces of the fibers are facilitated, and a wearer has the experience of quick-dry and cool feeling after wearing the fabric; meanwhile, due to the high crimp rate of the high-mechanical-elasticity synthetic fiber filaments, the fabric can have high stiffness and smoothness; the fabric obtained by weaving the high-mechanical-elasticity synthetic fiber filaments and the elastic spandex filaments has good elasticity, and the wearing comfort of a user is improved.

The invention discloses a preparation method of a low-cost in-situ doped silicon nitride fiber, which comprises the following steps: taking one or two of vinyl liquid polycarbosilane and vinyl polysilazane as a precursor, adding a boron monomer, an organic solvent and metallocene, and doping to prepare a doped silicon nitride fiber containing boron, titanium, hafnium, zirconium and other elements; carrying out melt spinning on the doped precursor to obtain a doped precursor; then boron-containing active gas introduced in the crosslinking process can be combined with active sites on the surface of the protofilament fiber or directly deposited on the surface of the fiber; and finally, the boron-containing active gas reacts with ammonia gas in the high-temperature sintering process to generate a boron nitride (BN) surface coating. Thus, the temperature resistance of the silicon nitride fiber is improved, the problem that a coating of a prefabricated body of a silicon nitride fiber ceramic matrix composite material with a complex structure is not uniform is solved, meanwhile, high cost of a secondary coating and large damage to the fiber are avoided, the composite material preparation process flow is simplified, and the invention provides the low-cost preparation method for in-situ doping of the silicon nitride fiber.

The invention provides a meniscus implant and a preparation method thereof, and relates to the technical field of medical instruments. The meniscus implant provided by the invention comprises degradable hydrogel, composite fibers and platelet-rich plasma, according to the meniscus implant, degradable hydrogel is used as a matrix, and composite fibers are used as a framework; the composite fiber and the platelet-rich plasma are distributed in the degradable hydrogel; the composite fibers are mainly obtained by compounding and co-twisting degradable fibers and silk fibers; the degradable fiber releases calcium ions after being degraded. The meniscus implant is used for meniscus injury repair, an autologous collagenous fiber structure can be constructed in vivo in situ, an artificial meniscus similar to a natural meniscus is formed, and the requirements of articular cartilage biomechanics and biological activity are met. The preparation method provided by the invention can be used for performing customized design on the damaged part of the meniscus so as to meet the stable matching of joint movement behaviors and avoid loosening and slipping phenomena.

The invention discloses a controllable degradation antibacterial filament fiber and a preparation method thereof, a calcium alginate filament fiber is prepared by using a wet spinning technology, and the calcium alginate filament fiber is strongly modified by physical and chemical methods respectively. The chemical modification adopts a cross-linking agent for modification, and the physical modification adopts cellulose nanocrystal (CNC) as a reinforcing material. The tensile breaking strength is improved to 43.25 cN / dtex from 16.35 cN / dtex which is not modified, the tensile breaking strength is improved by 2.6 times, and the degradation period is prolonged to 7 days from 2 days. On the basis, berberine is introduced into the fiber, so that the mechanical enhancement effect can be further achieved by means of the electrostatic attraction effect between materials, the antibacterial performance is obtained, and the antibacterial rate can reach 95.28%.

The invention relates to a dry-jet wet-spinning ultra-high-performance polyacrylonitrile-based carbon fiber and a preparation method thereof, and belongs to the technical field of carbon fibers. A preparation method of dry-jet wet-spinning ultra-high-performance polyacrylonitrile-based carbon fiber comprises the following steps: S1, mixing acrylonitrile, a comonomer, a chain transfer agent, an initiator and a solvent, carrying out polymerization reaction through a solvent dropwise addition method, and preparing a spinning solution; wherein the comonomers comprise a first comonomer, a second comonomer and a third comonomer; s2, the spinning solution is subjected to solidification, water washing, water drawing, oiling, drying and steam drawing, and precursor fibers are obtained; s3, the precursor fiber is sequentially subjected to pre-oxidation, low-temperature carbonization, high-temperature carbonization, graphitization, surface treatment, sizing and drying, and the ultra-high-performance polyacrylonitrile-based carbon fiber is prepared. Wherein the pre-oxidation adopts four-stage pre-oxidation treatment. The strength and modulus of the carbon fiber can be effectively and synergistically optimized, and the carbon fiber with high strength and high modulus is prepared.

The invention discloses a flexible conductive carbon cloth and a preparation method thereof, acrylonitrile is used as a raw material, pre-oxidized fibers are obtained through polymerization and pre-oxidation, the pre-oxidized fibers are subjected to activation treatment for spinning and weaving, and the flexible conductive carbon cloth is obtained through high-temperature carbonization and surface activation treatment. A hydrophilic group is introduced into a polyacrylonitrile molecular chain, so that the affinity of the fiber to water is increased; meanwhile, the prepared pre-oxidized fibers are compounded with the carbon nanotubes, carbonization is performed in different temperature zones under inert gas, the pre-oxidized fibers and the carbon nanotubes generate relatively strong binding force, the specific surface area of the carbon cloth is increased, and the conductivity and the flexibility are improved; finally, chitosan is adopted to perform hydrophilic treatment on the carbon cloth, aldehyde groups on the two sides of glutaraldehyde react with the pre-oxidized fibers and-NH2 on the chitosan, chitosan molecules are grafted to the surfaces of the pre-oxidized fibers, meanwhile, chitosan molecular chains react with one another, the surfaces of the pre-oxidized fibers are coated with the chitosan molecular chains, the hydrophilicity of the carbon cloth is improved, and the carbon cloth has a good antibacterial effect. The defects that existing conductive carbon cloth is high in production cost and poor in hydrophilicity and electrochemical activity are overcome.

The utility model relates to a warm-keeping jean fabric and clothes. The warm-keeping jean fabric is formed by weaving warp yarns and weft yarns in a staggered mode. The weft yarn comprises a yarn core, middle yarn surrounding the periphery of the yarn core and outer-layer yarn surrounding the periphery of the middle yarn, the yarn core comprises spandex filaments, the middle yarn comprises polyester filament yarns, the outer-layer yarn comprises blended yarn obtained by blending first short fiber fibers and second short fiber fibers, and the first short fiber fibers and the second short fiber fibers are blended. The first staple fibers comprise at least one of cotton fibers, viscose fibers and modal fibers, and the second staple fibers comprise at least one of acrylic fibers and wool fibers. The warp yarns comprise pure spinning yarns of one or more of cotton fibers, viscose fibers, tencel fibers and modal fibers. According to the warm-keeping jean fabric, through yarn selection of the warp yarn and the weft yarn and cooperation of the organization structure, a good warm-keeping effect and good comfort can be achieved at the same time.

The invention relates to the technical field of hydrogel, in particular to oriented degummed silk fiber reinforced polyvinyl alcohol hydrogel as well as a preparation method and application thereof.The hydrogel comprises degummed silk fiber and polyvinyl alcohol, has an anisotropic structure and can effectively enhance the fracture toughness and crack propagation resistance of the hydrogel. Through the assembly of the bionic fibrous ring structure, the multi-scale architecture of the natural intervertebral disc fibrous ring is simulated, the native fibrous ring structure is copied, and the mechanical microenvironment of the fibrous ring is simulated. The hydrogel and the artificial intervertebral disc have high toughness, long-term stability and biocompatibility, are particularly suitable for intervertebral disc repair, can stably bear biological load for a long time in intervertebral disc repair, and have relatively high application value.

The invention discloses a nano fibroin fiber membrane with directional water transport and a preparation method thereof.The preparation method comprises the steps that firstly, renewable pure silk fibroin is extracted from natural silkworm cocoons, a fibroin film with a nanofiber structure is prepared through an electrostatic spinning method, and a methanol treatment method is adopted to induce the fibroin film to generate secondary structure transformation; the hydrophilic moisture absorption characteristic is realized. Octadecyltrichlorosilane (OTS) is sprayed on the fibroin fiber membrane by adopting a spraying process, a netted hydrophobic inner layer and a netted water transmission channel which are uniformly and regularly arranged are deposited on a single side, the prepared fibroin fiber membrane with the OTS coating has a better directional water transmission function, and the directional water transmission index R is as high as 978%. According to the preparation method provided by the invention, the directional water transmission function is realized under the condition of keeping the mechanical property and radiation cooling property of the original fibroin fiber membrane, and the preparation method is environment-friendly and simple and can be expanded on a large scale.

The utility model discloses a composite conductive elasticized yarn, which relates to the technical field of textile yarns and comprises a yarn body, the yarn body comprises non-conductive chemical fiber bunchy filament fibers and organic conductive bunchy filament fibers, and after the non-conductive chemical fiber bunchy filament fibers and the organic conductive bunchy filament fibers are stranded through an air network, the non-conductive chemical fiber bunchy filament fibers and the organic conductive bunchy filament fibers are stranded through an air network. And elasticizing by an elasticizer to form a curled structure. According to the utility model, the organic conductive bunchy filament fibers and the non-conductive chemical fiber bunchy filament fibers are combined, so that the surface friction of tows is reduced, the elasticity-enhancing crimp deformation processing of the low-denier conductive fibers is realized, the production state is greatly improved, the subsequent weaving is facilitated, and the production efficiency is improved. The purposes of stable production of the composite conductive elasticizing yarn and small damage to each part of elasticizing equipment are achieved.

Product use by means of the invention for dyeing and coloring or the like of substrates made of fibers, fiber cables, yarns made of cut and filament fibers, flat structures such as woven fabrics, knitted fabrics, warp-knitted fabrics, non-woven fabrics and ready-made clothing and home textiles and the like, in particular of textiles with 100% or with mixtures thereof. These can be made of plant and animal natural fibers, stem fibers, synthetic fibers of petrochemical or natural origin as well as special fibers such as soy fibers, milk fibers, bamboo fibers or fibers that are difficult to dye such as aramid, polypropylene.

The invention discloses a multifunctional coating with a compact-porous double-layer structure on the surface of magnesium alloy and a preparation method, and belongs to the technical field of biological materials. According to the multifunctional coating, magnesium alloy serves as a substrate, a compact layer and a porous layer are sequentially stacked from the substrate to the outside, and the compact layer is composed of two-dimensional transition metal carbide / nitride, calcium silicate nanowires and a positively charged polymer. The porous layer is composed of copper-containing complex / biopolymer composite fibers, mineralized silk fibers loaded with bioactive metal ions and astragalus polysaccharide on the surface, and natural polymers. According to the multifunctional coating with the compact-porous double-layer structure prepared on the surface of the magnesium alloy, the porous layer on the surface layer has a unique porous structure, growth and proliferation of osteoblasts can be well promoted, meanwhile, the multifunctional coating has the characteristics of pressure resistance, bacteria resistance and oxidation resistance, the compact layer on the bottom layer can improve the corrosion resistance of the magnesium alloy, and the service life of the magnesium alloy is prolonged. The coating is particularly suitable for surface coating of magnesium alloy implant materials and can be used in the field of medical instruments.

The application relates to a method for determining pre-oxidation process parameters of polyacrylonitrile-based carbon fibers, and belongs to the technical field of carbon fibers. The method for determining pre-oxidation process parameters of polyacrylonitrile-based carbon fibers comprises first-stage pre-oxidation, the first-stage pre-oxidation temperature is determined based on DSC of the original fiber, and the first-stage pre-oxidation time is determined based on a cyclization index of the fiber at the first-stage pre-oxidation temperature. More reasonable pre-oxidation parameters can be determined, and polyacrylonitrile-based carbon fibers with high strength and high modulus can be prepared.

The invention provides a flame-retardant real silk fiber material, a flame-retardant real silk fabric and a preparation method of the flame-retardant real silk fiber material and the flame-retardant real silk fabric. Silk fibers and the real silk fabric are modified through the following steps in sequence; immersing the real silk fiber and the real silk fabric in a mixed solution of hydroxylation modified lignosulfonate and metal salt at 70-85 DEG C, and preserving heat for 45-75 minutes; after the rolling detention rate is controlled to be 75%-100%, soaking in a mixed solution of chitosan, citric acid and tannic acid at the temperature of 70-85 DEG C, and preserving heat for 45-75 minutes; after the rolling detention rate is controlled to be 90%-120%, baking is conducted at the temperature of 120-150 DEG C; and after baking, washing with water and naturally airing. According to the flame-retardant real silk fiber material and the flame-retardant real silk fabric, modification is conducted in the mixed solution of the hydroxylation modified lignosulfonate and the metal salt and in the mixed solution of the chitosan, the citric acid and the tannic acid in sequence, the flame-retardant performance of the flame-retardant real silk fabric is improved, and the air permeability of the flame-retardant real silk fabric is not affected; and after multiple times of water washing, relatively high flame-retardant performance is still maintained.

The invention discloses a core-shell structure polystyrene / polylactic acid spinning fiber loaded with pheromone and a preparation method of the core-shell structure polystyrene / polylactic acid spinning fiber. A coaxial electrostatic spinning method is adopted for preparation, a core solution is a polylactic acid solution and sex pheromone mixed solution, a shell solution is a polystyrene solution, a formed spinning film is collected on an aluminum roller wrapped with sulfate transparent paper, and the polystyrene / polylactic acid spinning fiber of the core-shell structure is obtained. The fiber is uniform in spinning morphology and has a core-shell structure, and the diameter of the fiber is about 2.24-3.55 microns. The method is simple, economical and efficient, has good adjustability in solution preparation and electrostatic spinning processes, is suitable for preparing polystyrene / polylactic acid spinning fibers with core-shell structures capable of loading insect sex pheromones of different types and concentrations, and realizes long-acting slow release of sex information through a polystyrene and polylactic acid dual slow release system. The slow release period of the sex pheromone in the spinning fiber can reach 8-14 weeks, and the sex pheromone can be applied to the aspects of biological prevention and control of neutral pheromone isotropic interference prevention and control of pests for a long time.

The utility model relates to the field of fabrics, in particular to a moisture-absorbing and sweat-releasing blended fabric. The moisture-absorbing and sweat-releasing blended fabric comprises a moisture-absorbing layer and a breathable layer, wherein the moisture absorption layer is formed by weaving a plurality of first yarns and a plurality of second yarns; the first yarns comprise polyester fibers and multi-strand yarns wrapping the polyester fibers; the multi-strand yarn is formed by twisting tencel fibers and silver ion antibacterial fibers; the breathable layer is formed by weaving a plurality of third yarns, and the third yarns are formed by twisting linen fibers and cashmere fibers; a plurality of ventilation holes are formed in the ventilation layer; the first yarns have high elasticity, comfort, hygroscopicity and antibacterial activity, and the second yarns also endow the moisture absorption layer with excellent moisture conductivity; the breathable layer formed by weaving the third yarns is provided with a plurality of breathable holes, so that the moisture absorption layer after moisture absorption can be quickly dried, and the blended fabric has the excellent effects of moisture absorption, sweat releasing and quick drying.

The invention provides an aerogel composite sheet which comprises an upper base material, an aerogel heat insulation coating and a lower base material which are sequentially bonded from top to bottom, the upper base material and the lower base material are both glass fiber felts or pre-oxidized fiber felts, and the aerogel heat insulation coating is prepared from the following components in parts by weight: 65-85 parts of aerogel slurry, 5-10 parts of a flame retardant and 5-10 parts of a binder. 0.5-1 part of an opacifying agent and 5-10 parts of phase change microcapsules. The invention also provides a preparation method of the aerogel composite sheet. The aerogel composite sheet provided by the invention has relatively good heat-insulating property and flame-retardant property.

The invention relates to the technical field of wearable electronics, in particular to a silk fiber membrane, a preparation method and a flexible wearable electron. The preparation method of the silk fiber membrane comprises the following steps: providing a plurality of groups of silk fibroin fibers with different gram weights and a solvent, and putting the silk fibroin fibers into the solvent for stretching treatment; performing first drying treatment on the stretched silk fibroin fibers to obtain a plurality of silk fibroin fiber films; cutting each silk fibroin fiber film into fiber film blocks with the same size, wherein the fiber distribution densities of the fiber film blocks are different; providing hydroxylated titanium carbide solutions with various concentrations; and coating each fiber film block with hydroxylated titanium carbide solutions with different concentrations, and then carrying out second drying treatment to obtain the silk fiber film. The problem that a traditional silk fiber membrane is low in piezoelectric sensitivity is solved.

The invention relates to an ultrahigh down-proof down jacket fabric and a preparation process thereof.The preparation process includes the steps that silk fibers, spinning auxiliaries and modified SiO2 precursor sol are evenly mixed in proportion to obtain spinnable sol, the spinnable sol is prepared into a modified SiO2 nanofiber membrane through an electrostatic spinning technology, and after the modified SiO2 nanofiber membrane is dried, an aerogel elastic membrane is obtained; the fabric is attached to base cloth, and the ultrahigh down-proof down jacket fabric is prepared; wherein the spinning auxiliary agent is at least one of a polyvinyl acetal solution and a poly (butylene succinate) solution. The prepared ultrahigh down-proof down jacket fabric has high air permeability and high down-proof performance, and is good in toughness, good in elasticity and washable, so that the high air permeability and the high down-proof performance of the fabric can be kept for a longer time.

The invention discloses a ground directional drilling goaf passing leaking stoppage method which comprises the steps that hole data of a goaf are obtained, and the hole data comprise the hole depth and the crack width; when the width of the crack is larger than 5 mm, a foundation plugging material is adopted for conducting foundation plugging on the hole of the goaf, and the foundation plugging material is an inert material and cement paste; judging whether basic plugging fails or not to obtain a first judgment result; if the first judgment result shows that the basic plugging fails, a flexible plugging material is adopted for conducting medium-term plugging on the holes in the goaf, and the flexible plugging material is a material formed by mixing hemp fiber, sawdust, soybeans and water. According to foundation plugging, a large channel is filled through particle bridging, a primary plugging layer is formed after cement paste is solidified, the flexible material can adapt to trace deformation of surrounding rock through deformation filling, and micro cracks of a foundation layer are plugged. Through graded gradient filling, the leaking stoppage effect can be greatly improved.

According to the filament non-woven fabric and the manufacturing equipment thereof, the filament non-woven fabric is a fiber net composed of curled filament fibers with a spiral structure, the curled filament fibers are composed of high-melting-point resin and low-melting-point resin, the melting point difference of the high-melting-point resin and the low-melting-point resin is at least 20 DEG C, and at least part of the surface layer of each curled filament fiber is the low-melting-point resin. The low-melting-point resins on the surface layers of the adjacent curled filament fibers are mutually fused and bonded together, and the fluctuation ratio of the air permeability at different positions on the filament non-woven fabric is not more than 10%. Due to the fact that the curled filament fiber net is conveyed to the conveying net curtain or other fiber nets along with rotation of the rotary net, the impact force generated when the curled filament fiber net directly falls to the conveying net curtain or the previous fiber net is reduced, and the defects that fibers at different positions of the formed filament non-woven fabric are not evenly distributed, and the uniformity of the net face is poor can be overcome. Therefore, the filament non-woven fabric is uniform in mesh surface and has good air permeability and fluffiness.

According to the different-shrinkage elastic composite filament DTY fiber and the elasticity enhancing processing method thereof, the semi-dull polyester POY, the T8 modified polyester POY and the modified polyester FDY are selected and combined, the processing path is optimized, and the prepared composite filament fiber has bulkiness, high elasticity and different-shrinkage effects. Through introduction of T8 modified polyester and processing of the T8 modified polyester in a low-temperature first hot box, untwisting and orientation are completed, and the high-elasticity and soft characteristics are stimulated. Meanwhile, the second hot box is closed, so that the two false-twisted POY filaments are naturally and slowly cooled and shaped in the closed channel, damage to a T8 polyester curling structure is avoided, the high shrinkage potential of the T8 polyester is reserved, and meanwhile energy conservation and consumption reduction are achieved. Besides, the FDY is introduced through an independent low-tension path, and is combined with the POY at an outlet through a bottom net technology, so that the strength loss of the FDY caused by excessive drafting or high-temperature treatment is avoided, and the mechanical property of a final product is guaranteed while a unique three-dimensional texture is formed.

The invention discloses a preparation method of a fluorine-free super-hydrophobic and self-cooling synergistic silk fabric. The preparation method comprises the following steps: forming an M-O-Si bond from a silane coupling agent macromolecule and an inorganic metal oxide (MXOY) by using a covalent bond grafting method to obtain silane modified encapsulated MXOY particles; the obtained particles and amino-terminated organic silicon emulsion are subjected to an in-situ amination reaction on silk fibers to form the fluorine-free super-hydrophobic self-cooling synergistic organic-inorganic composite silk fabric. MXOY with high refractive index endows the silk fabric with a self-cooling function, and an organic silicon structure can change the roughness of the surface of the silk fabric and reduce the surface energy of the silk fabric, so that the silk fabric has fluoride-free super-hydrophobic performance. In addition, the MXOY shows better durability under the barrier action of an organic silicon structure. The fluorine-free super-hydrophobic self-cooling silk fabric prepared by the invention can be applied to the fields of high-end intelligent textiles, special protection and the like.

The invention belongs to the technical field of hemp double-layer fabrics, and relates to a production method of a moisture-absorbing and quick-drying hemp double-layer fabric. After the hemp fibers are pretreated, the surface structure is improved, the hydrophilicity is enhanced, sweat and moisture discharged by a human body can be rapidly absorbed, and the skin is kept dry and comfortable; the hemp blended yarn is spun by introducing moisture-conducting and quick-drying fibers, so that moisture can be quickly conducted and evaporated in the fabric, the quick-drying speed of the fabric is increased, and the wet feeling and discomfort are reduced; the spun silk fibers are introduced, so that the comfort of the fabric is improved, and meanwhile, the fabric has good hand feeling and comfort and does not irritate the skin.

The invention relates to the technical field of rail transit cables, in particular to a preparation method of a bending-resistant sensor cable for a high-speed motor train unit. The preparation method comprises the steps of conductor three-layer twisting and annealing, insulating layer gradient extrusion and plasma treatment, filling, twice wrapping, double-layer shielding, double-layer sheath co-extrusion and irradiation crosslinking post-treatment. The structure of the bending-resistant sensor cable sequentially comprises a high-elasticity fiber rope filler, a copper alloy conductor with a TPEE insulating layer, a thin flame-retardant cloth wrapping layer, an elastic silica gel inner shielding layer, a tinned copper wire and fiber filament outer shielding layer, a thin non-woven fabric wrapping layer and a cross-linked polyurethane double-layer sheath from inside to outside. The bending resistance of the cable exceeds 500,000 times, the cable works stably at the temperature of-50 DEG C to 125 DEG C, the service life is prolonged by 2-3 times, and the cable is suitable for the harsh environment of the high-speed motor train unit.