3853results about "Filament/thread forming" patented technology

The invention discloses a bionic nanofiber-hydrogel composite biological scaffold as well as a preparation method and application thereof. The bionic nanofiber-hydrogel composite biological scaffold is a composite scaffold for simulating a gray-white matter partition structure of a spinal cord tissue, and comprises bionic nanofibers and a bionic hydrogel material, wherein the bionic nanofibers are arranged in an oriented manner and simulate a white matter ordered structure around the spinal cord, and the bionic hydrogel material is combined with the bionic nanofibers and simulates gray matter in the center of the spinal cord. According to the bionic nanofiber-hydrogel composite biological scaffold, the biological activity of loaded stem cells or adult cells can be improved, the problem that a large number of transplanted exogenous cells die due to unbalanced oxidative stress generated after tissue damage can be solved, and it is guaranteed that the transplanted cells reside in a damaged area and play a role; therefore, the spinal cord microenvironment is improved, proliferation and differentiation of endogenous neural stem cells are promoted, functional recovery after spinal cord injury is finally promoted, and great potential is achieved in spinal cord injury treatment.

The invention discloses a phase change energy storage waterborne polyurethane nanofiber membrane and a preparation method thereof. Lignin-based phase change microcapsules are prepared by combining ultraviolet crosslinking with lignin shell packaging, and then the nanofiber membrane containing the phase change microcapsules is prepared through an electrostatic spinning technology. And finally, constructing the waterborne polyurethane phase change fiber membrane with asymmetric wettability through a low-temperature plasma technology. According to the invention, lignin is self-assembled to form nanoparticles, and ultraviolet light induces free radical polymerization to form a polymer film, so that the packaging capability of the phase change material is improved. The phase change microcapsule prepared by the method is high in packaging efficiency and excellent in phase change performance, the preparation process is green and environment-friendly, the technological operation is simple, the temperature of the prepared phase change energy storage waterborne polyurethane nanofiber membrane conforms to the comfortable temperature range of a human body, and the phase change energy storage waterborne polyurethane nanofiber membrane has excellent temperature regulation, waterproof and moisture permeable performance and is suitable for being used in the field of water treatment. Good application prospects are realized in the field of functional textiles with functions of intelligent temperature regulation, water resistance and air permeability and the like.

The invention relates to the technical field of film material preparation, and discloses a polylactic acid antibacterial packaging film and a preparation method thereof, the polylactic acid antibacterial packaging film comprises the following raw material components by weight: 60-80 parts of polylactic acid, 10-20 parts of polyvinyl alcohol, 10-20 parts of nano zinc oxide, 0.5-1.5 parts of nano cellulose, 1-3 parts of an antibacterial agent, and 10-15 parts of corn starch; the antibacterial agent is prepared from the following components in parts by weight: 5-10 parts of carboxymethylated chitosan and 0.5-2 parts of a dynamic disulfide bond cross-linking agent, the substitution degree of the carboxymethylated chitosan is greater than or equal to 80%, the antibacterial agent is prepared from tea tree essential oil and eugenol, and the dynamic disulfide bond cross-linking agent is bis (3-aminopropyl) disulfide. By adopting a composite system of carboxymethylated chitosan and a dynamic disulfide bond cross-linking agent, the technical effects of humidity-triggered self-repairing and mechanical property synergistic improvement are achieved, and compared with a packaging film with a single polymer base material in the prior art, the problem of antibacterial failure caused by mechanical damage is solved.

The invention provides a slit type bubble electrostatic spinning device assisted by hot air flow. The slit type bubble electrostatic spinning device comprises a hot air flow channel, a slit type metal solution channel, a bubble pipe and an electrostatic generator. The hot air flow channel and the slit type metal solution channel are circular truncated cone-shaped pipelines formed by gradually narrowing inner and outer pipes; the pipe diameter of an inner pipe of the hot air flow channel is the same as that of an outer pipe of the slit type metal solution channel; the slit type metal solution channel penetrates through the inner pipe of the hot air flow channel and is fixedly attached to the inner pipe of the hot air flow channel, the bubble pipe extends and is fixed to the inner pipe of the slit type metal solution channel, and the electrostatic generator is connected with the slit type metal solution guide pipe through a wire. The arrangement of polymer molecular chains in the solution is improved through the slit type metal solution channel, high-speed hot airflow is provided by the circular-truncated-cone-shaped hot airflow channel to upwards support bubbles from the periphery and assist the polymer molecular chains to be evenly distributed in parallel with the surfaces of the bubbles, and the enhanced nanofibers are prepared by improving the internal structure of the nanofibers.

The invention discloses a C5F10O mixed gas decomposition component adsorption material as well as a preparation method and application thereof. The adsorption material is a metal organic framework / nanofiber composite membrane which is prepared by uniformly dispersing a metal organic framework material on a nanofiber membrane obtained by an electrostatic spinning technology through a spraying doping method and is used for adsorbing decomposition components of C5F10O mixed gas. According to the adsorption material provided by the invention, through mutual cooperation of the metal organic framework material and the porous nanofiber membrane base material, a formed composite membrane has a larger specific surface area and more metal active sites, adsorption of gas molecules is promoted, permeation and diffusion of the gas molecules are also facilitated, and the adsorption efficiency is improved. Therefore, the gas sensitivity and the adsorption effect of the adsorption material are remarkably improved.

The invention discloses a Janus wound dressing with antibacterial and tissue repair promoting functions and a preparation method of the Janus wound dressing, belongs to the technical field of wound dressings, and aims to realize antibacterial, tissue repair promoting and moist wound healing microenvironment through freeze drying and electrostatic spinning technologies. Polycaprolactone (PCL), bioactive glass (BG) and curcumin Cur are used for preparing a hydrophobic inner layer capable of promoting tissue repair, methacrylated gelatin GelMA is used for preparing a hydrophilic outer layer with moisturizing performance, and the PCL-BG-Cur / GelMA composite wound dressing with antibacterial, moisturizing and repair promoting functions is constructed. Animal experiment results show that the dressing loaded with curcumin Cur and bioactive glass BG has multiple functions of synergistic antibiosis, moisturizing and the like, the result shows that the prepared dressing has the performance of promoting epithelization, collagen deposition, new hair follicle formation and the like, and the dressing has a considerable application prospect in the aspect of rapid wound repair.

The invention belongs to the technical field of functional fibers, and discloses a moisture-absorbing and sweat-releasing composite special-shaped chinlon 6 fiber and a preparation method and application thereof.The section of a skin layer of the moisture-absorbing and sweat-releasing composite special-shaped chinlon 6 fiber is in a three-leaf shape or a cross shape or a five-leaf shape, and the section of a core layer of the moisture-absorbing and sweat-releasing composite special-shaped chinlon 6 fiber is round; the preparation method comprises the following steps: by taking chinlon 6 slices as a core layer raw material and chinlon 6 absorbing and discharging master batches as a skin layer raw material, forming by adopting a skin-core composite spinning process to obtain fibers, sequentially soaking the fibers in a weak acid bath, a weak alkali bath and a clear water bath, taking out and drying to obtain the moisture-absorbing and sweat-releasing composite special-shaped chinlon 6 fibers, the chinlon 6 suction and discharge master batch is obtained by blending raw materials including chinlon 6 slices, boron nitride and calcium carbonate, and then melting, extruding and granulating through a double-screw extruder; according to the application, the prepared moisture absorption and sweat releasing composite special-shaped chinlon 6 fiber can be woven into a fabric. According to the invention, the mechanical property of the fiber is ensured, the moisture-conducting and sweat-discharging performance of the fiber is improved, and the sweat-discharging requirement of a human body after strenuous exercise can be met.

The invention discloses a photo-thermal phase change fiber material with a core-shell structure and a preparation method of the photo-thermal phase change fiber material. The method comprises the following steps: performing coaxial electrostatic spinning on a shell layer spinning solution and a core layer spinning solution to obtain core-shell structure nanofibers; soaking the core-shell structure nanofiber in the hydrophobic modification solution; and heating and drying the soaked fibers to obtain the photo-thermal phase change fiber material with the core-shell structure. The material can enhance adsorption of marine leaked crude oil through solar heating, can cope with complex weather conditions through heat storage of the phase change material, and has the advantages of simple preparation method, strong crude oil adsorption performance, environmental protection, harmlessness and the like.

The invention discloses a production process of antistatic polyamide fiber, and relates to the technical field of textile chemical fiber production, the antistatic polyamide fiber comprises the following raw materials by weight: 30-40 parts of polyethylene glycol terephthalate, 60-70 parts of polyamide, and 3.6-4.8 parts of master batch. The master batch is prepared from the following raw materials in parts by weight: 80 to 90 parts of polyamide, 2 to 4 parts of an antistatic agent, 0.7 to 0.9 part of an anti-ultraviolet agent, 0.7 to 0.9 part of an auxiliary agent, 2.5 to 3.5 parts of a toughening agent and 0.5 to 0.7 part of a dispersing agent. The synthesized antistatic agent contains carbon fibers, a polyether structure, an amide structure and a DOPO structure, so that the antistatic property and flame retardance of the antistatic polyamide fiber are improved. The synthesized anti-ultraviolet agent contains a benzimidazole structure, a sulfydryl ester structure, a hindered phenol structure and an amide structure, so that the ultraviolet aging resistance of the antistatic polyamide fiber is improved.

The invention discloses a low-strength polyester fully-drawn yarn and a preparation method and application thereof.The preparation method comprises the steps that a polyester melt is sprayed out of a yarn strip through a spinneret orifice with a flat cross section, the yarn strip is cooled and oiled, then the yarn strip makes frictional contact with a brittle damage part with a rough surface layer, the yarn strip enters a pre-interlacer to be treated, drawn and shaped, and the low-strength polyester fully-drawn yarn is obtained. The main network is interlaced; wherein the surface roughness Ra of the rough surface layer is 0.5-1.5, filaments located between the brittle damage part and the pre-interlacing device enter the pre-interlacing device at an included angle alpha, the acute included angle between the filaments entering the pre-interlacing device and the perpendicular normal of the end face, where the filaments enter, of the pre-interlacing device is the included angle alpha, and the included angle alpha is 10-30 degrees; according to the method, the ideal brittle damage effect of the polyester filaments can be achieved without being subjected to multiple treatments such as a high-temperature environment, strong alkali and alcohol, the energy consumption and the cost are low, and the prepared cloth has low tearing strength and is suitable for preparing medical adhesive tape, wiring harness adhesive tape or trademark cloth.

The invention provides an injectable short-fiber-based hydrogel tissue repair material with an electric response characteristic as well as a preparation method and application thereof, and the injectable short-fiber-based hydrogel tissue repair material with the electric response characteristic is prepared by taking a natural polymer material loaded with bioactive factors as a core layer material and a biodegradable material as a shell layer material through a coaxial electrostatic spinning technology. The method comprises the following steps: preparing short fibers with a core-shell structure, uniformly mixing the short fibers with a hydrogel matrix, injecting and filling a tissue defect part, and carrying out ultraviolet curing to form the tissue repair material. The injectable short-fiber-based hydrogel tissue repair material with the electrical response characteristic provided by the invention has piezoelectric characteristic and injectable characteristic, can generate electrical response through mechanical stimulation so as to promote cell proliferation and tissue repair, and also has controllable drug release capacity and good mechanical adaptability; the method is suitable for application scenes of complex tissue damage repair such as diabetes infected wound repair, articular cartilage repair, oral barrier membrane repair, abdominal wall defect repair and the like.

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

The invention discloses a skin-friendly antibacterial spinning yarn and a preparation method thereof, and relates to the field of spinning yarns. When the skin-friendly antibacterial spinning yarn is prepared, 3-amino-1, 2, 4-triazine and vinyl phosphonyl chloride are subjected to a reaction, and a phosphorus-nitrogen flame-retardant monomer is obtained; activating bamboo nano-cellulose with ammonium ceric nitrate, grafting a phosphorus-nitrogen flame-retardant monomer, and performing electrostatic spinning to obtain modified bamboo nano-cellulose coated fibers; dipping polyester filament yarns in dopamine hydrochloride and sodium hypochlorite in sequence to obtain modified polyester core yarns; the modified bamboo nano-cellulose wrapping fiber and the modified polyester core yarn are twisted through a ring spinning frame and then react with 3, 3 ', 4, 4'-benzophenone tetracarboxylic dianhydride, and the skin-friendly antibacterial spinning yarn is obtained. The skin-friendly antibacterial spinning yarn prepared by the method has excellent skin-friendly antibacterial property, flame retardance, aging resistance and mechanical property.

A medical appliance or prosthesis may comprise one or more layers of rotational spun nanofibers, including rotational spun polymers. The rotational spun material may comprise layers including layers of polytetrafluoroethylene (PTFE). Rotational spun nanofiber mats of certain porosities may permit tissue ingrowth into or attachment to the prosthesis. Additionally, one or more cuffs may be configured to allow tissue ingrowth to anchor the prosthesis.

The invention relates to a preparation method of a hydrophobic and oleophobic PTFE membrane, and belongs to the technical field of PTFE membrane preparation. Aiming at the problems that an existing PTFE membrane is difficult to construct a micro-nano multi-stage coarse structure and has a synergistic effect with low chemical surface energy, the hydrophobic and oleophobic properties are insufficient and the structural stability is poor, the key points of the technical scheme provided by the invention are as follows: firstly, carrying out ethanol ultrasonic cleaning on a PTFE base membrane of 20-30 microns, and carrying out vacuum plasma treatment to form a nano coarse structure and oxygen-containing polar group active sites; then, under the protection of nitrogen, immersing into an ethanol solution containing perfluorodecyltriethoxysilane, dibutyltin dilaurate and nano cellulose whiskers, carrying out hot-pressing compounding with PET non-woven fabric, carrying out heat treatment, and finally, coating with a fluorine-containing polymer nano fiber layer through an electrostatic spinning process; the composite hydrophobic layer with the synergistic effect of a micro-nano multistage coarse structure and chemical low surface energy is formed, the water contact angle is larger than or equal to 155 degrees, and the oil contact angle is larger than or equal to 130 degrees. The PTFE film prepared by the preparation method can be used in the fields of waterproof breathable materials, self-cleaning surfaces, oil-resistant packaging and the like.

The invention relates to a vertical orientation ceramic fiber / polymer composite solid electrolyte membrane and a preparation method and application thereof, the vertical orientation ceramic fiber / polymer composite solid electrolyte membrane is composed of an inorganic framework material with a vertical orientation structure and a toughening matrix material filled in the inorganic framework material, the inorganic framework material is an inorganic ceramic nanofiber with high lithium ion conductivity, the toughening matrix material is a polymer / lithium salt compound with relatively high lithium ion conductivity. The composite solid electrolyte membrane combines high modulus of an inorganic skeleton and high toughness of a polymer, has excellent mechanical properties, and can form good contact with a positive electrode and a negative electrode of a battery. More importantly, the unique vertical orientation fiber structure of the inorganic skeleton can greatly reduce the actual transmission path of ions in the operation process of the battery, and the ionic conductivity of the composite solid electrolyte membrane is greatly improved.

The present invention relates of a biodegradable and hydrophobic polylactic acid (PLA) non-woven material and a process for manufacturing thereof, said PLA non-woven material comprising a non-woven fabric for personal protective equipment, and a non-woven fabric for the three layer surgical mask; said PLA non-woven material comprising a layer of nanofiber membrane and a layer of biodegradable spunbond fabric which could fulfil the international biodegradation standard EN13432. Said non-woven fabric for the PPE has at least 45N breaking force, at least 15% elongation, and having passed level 3 fluid resistance test according to AATCC 42 and AATCC 127.

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

The invention relates to the field of fiber production, and particularly discloses a zinc oxide antibacterial ES fiber and a preparation method thereof. The zinc oxide antibacterial ES fiber comprises a core layer and a surface layer, and the surface layer comprises the following raw materials in parts by weight: 80-100 parts of polyethylene, 2-5 parts of a nano-zinc oxide composite material, 1-2 parts of a dispersing agent and 2-3 parts of a compatilizer; the nano-zinc oxide composite material is prepared from hydroxyapatite nanowires, a polyethylene glycol solution and coated nano-zinc oxide in a mass ratio of 1: (8-10): (1.5-2); the preparation method comprises the following steps: melting the material of the core layer to obtain a melt; mixing polyethylene, the nano-zinc oxide composite material, a dispersing agent and a compatilizer, and melting to obtain a polyethylene melt; and mixing the melt and the polyethylene melt, spinning, bundling, stretching, carrying out heat setting, curling and cutting off to obtain a finished product, the fiber has the advantages of being good in antibacterial property, high in mechanical strength, good in spinning stability and good in air permeability.

The invention belongs to the field of nano-enzyme preparation and biological application, and particularly relates to a preparation method and application of M2 type macrophage membrane coated FeMn diatomic nano-enzyme. The preparation method comprises the following steps: by taking nitrogen-doped carbon (BANT) as a carrier, loading Fe and Mn diatoms, synthesizing a novel nano material FeMnDA / BCNT diatomic nano-enzyme, extracting a macrophage membrane from natural macrophages, and coating the FeMnDA / BCNT nano material with the macrophage membrane to finally form M2 type macrophage membrane coated nano-particles, namely [MM] FeMnDA / BCNT. The [MM] FeMnDA / BCNT nano-enzyme prepared by the invention has good biological safety and simulated SOD and CAT enzyme activity, and the expression of inflammatory factors is reduced by removing excessive ROS (reactive oxygen species) in the cartilage cells induced by H2O2, so that the damage of oxidative stress to the cartilage cells is inhibited. The [MM] FeMnDA / BCNT nano-enzyme is not used for treating OA yet, so that a scientific basis is provided for further application and expansion of the diatomic nano-enzyme, and an effective strategy and a new thought are provided for treating osteoarthritis and chronic diseases related to oxidative stress in the future.

The invention discloses a fluoride-free waterproof sound-transmitting film and a preparation method thereof, and the fluoride-free waterproof sound-transmitting film comprises the following components in percentage by mass: 30-40% of a fluoride-free polymer; 4.5%-11.5% of a fluoride-free waterproof agent; 0.5%-3.5% of a cross-linking agent and 45%-65% of a solvent; the solvent is a mixed solvent of N 'N-dimethylformamide, N' N-dimethylacetamide, acetone and ethyl acetate, and the mass ratio of the amide solvent in the mixed solvent is 60%-85%; the preparation method of the fluoride-free waterproof sound-transmitting film comprises the following steps: preparing a spinning solution; carrying out electrostatic spinning by utilizing electrostatic spinning equipment to obtain a continuous and uniform nano spinning membrane; the method comprises the following steps: uniformly depositing nanofibers on a nano spinning film base material, and carrying out post-treatment to obtain a finished product of the fluoride-free waterproof sound-transmitting film, the fluorine-free safe and healthy product with good water resistance and air permeability, high rebound resilience and excellent acoustic performance is successfully prepared through selection of raw materials, preparation of a spinning solution, spinning process parameters and fine regulation and control of post-treatment conditions.

The utility model discloses a composite fiber which comprises a first component, a second component and a third component, the cross section, perpendicular to the length direction, of the composite fiber comprises a plurality of single-component areas and a plurality of separated double-component areas, and every two adjacent double-component areas are separated by a single-component area. The plurality of single-component areas are separated from one another or are connected with one another in the center of the cross section perpendicular to the length direction; the component of the single-component area is a third component, the component of the double-component area comprises a first component and a second component, the first component and the second component are arranged in parallel, the first component and the second component are respectively in contact with the third component, and the single-component area and the double-component area are detachably in contact connection; the composite fiber not only can be directly used, but also can be split into the superfine fiber and the single-component fiber with specific structures, and the elasticity, the glossiness and the strength such as the tearing strength of the superfine fiber are obviously improved at the same time.

The invention discloses a melt spinning cooling system which comprises a spinning box, a cooling cylinder section, a first heating assembly, a second heating unit and a recovery part, the first heating assembly outputs trace hot nitrogen, anti-oxidation protection of melt trickles is achieved, the oxidation risk possibly caused by direct contact of a traditional cooling medium is avoided, and the cooling efficiency is improved. Meanwhile, the second heating unit is matched to regulate and control the temperature of the cooling cylinder section, so that the whole-process temperature accurate control from oxidation prevention to high-temperature natural cooling and the high-temperature natural cooling and cold air supply-free operation process are realized, and the solidification orientation length and process of the melt trickle can be actively lengthened by combining gradient process temperature control; different from the defect of insufficient orientation caused by too fast cooling in the prior art, key conditions are provided for optimization of a fiber orientation structure; due to the coaxially stacked cooling cylinder sections and nitrogen recovery operation, a stable cooling environment is constructed, fiber shaking is avoided, the nitrogen utilization rate and the environmental safety are improved, and the process stability and economical efficiency are balanced.

The invention provides a preparation method of a full-hydrophilic composite material with a pore diameter gradient and a one-way moisture conduction function. A double-layer hydrophilic composite layer with a pore difference structure is prepared by adopting a means of combining an electrostatic spinning process and a spunlace non-woven process, so that the one-way moisture conduction function is realized. The preparation method comprises the following steps: firstly preparing a hemp / viscose spunlace non-woven layer, then preparing a polylactic acid / chitosan nanofiber membrane through an electrostatic spinning process, and finally compounding the hemp / viscose spunlace non-woven layer and the polylactic acid / chitosan nanofiber membrane to prepare the composite material with the one-way moisture conduction function. The two hydrophilic layers with fiber diameter difference and pore size difference are compounded through a double-layer assembly strategy, the composite material with a brand-new structure and a one-way moisture guiding function is constructed, the composite material has a good one-way liquid conveying function, the continuous one-way moisture guiding function is achieved, and the composite material is suitable for large-scale popularization and application. Wide application prospects are realized in the fields of textile clothing, medical and health materials and the like.

The invention provides a carbon fiber structure energy storage composite material based on a multistage conductive network and a preparation method and application thereof, and belongs to the technical field of energy storage materials. A conductive network with high conductivity and good interface bonding force is formed through the synergistic effect of CNTs, graphene and MXene, meanwhile, the uniformity and adhesive force of an electrode coating are remarkably improved by combining an electrostatic spinning or precise spraying technology, the surface energy of the carbon fibers is enhanced through low-temperature plasma treatment, and the conductivity of the electrode coating is improved. The adhesive force and the stability of a conductive network are improved, so that the interface bonding force of the conductive coating is remarkably improved. The high-performance carbon fiber structure energy storage composite material is prepared through construction of a multi-stage conductive network and optimization of a coating process, the mechanical performance and the electrochemical performance of the material are remarkably improved, and a foundation is laid for industrial application of the technology through the optimized coating process and the enhanced interface bonding force.

The invention discloses a three-fluid three-dimensional flow guide spinning head, electrostatic spinning equipment and a batch preparation method of three-chamber embedded parallel structure nanofibers, three different fluids are synchronously guided into a high-voltage electrostatic field by simultaneously arranging a plurality of nozzle outlets with combined structures, and a plurality of complex combined nozzle outlets are used as macroscopic templates, so that the three-chamber embedded parallel structure nanofibers are prepared under the high-voltage electrostatic field. Through interaction of a high-voltage electrostatic field and fluids, batch preparation of the three-chamber embedded and column-structured nanofibers by multi-fluid common electrospinning is realized. The three spinning solutions are guided to a common outlet through the first series of metal capillary tubes, the second series of metal capillary tubes and the spinning solution insulating container respectively; the first series of metal capillary tubes and the second series of metal capillary tubes are respectively dispersed from respective capillary tube gathering inlets, penetrate through the interior of the spinning solution insulating container to the bottom of the spinning solution insulating container and vertically penetrate out to form a plurality of outlets which are parallel in pairs; a through hole outlet is formed in any parallel outlet at the bottom of the spinning solution insulating container to form a common outlet of the three spinning solutions, and the three-chamber embedded and arrayed nano structure is directly prepared in batches in a single step.

The invention relates to the related technical field of warm-keeping fabrics, in particular to a hollow warm-keeping yarn fabric which is formed by weaving hollow fibers in a staggered plaid structure, the staggered plaid structure is formed by interweaving warp yarns and weft yarns in a spiral winding mode, and micro air chambers are formed at the interweaving points of the warp yarns and the weft yarns. The hollow fiber comprises a core layer and a sheath layer, the core layer is of a plum blossom petal-shaped multi-cavity structure formed by ultra-high molecular weight polyethylene, cavities are separated through radial connecting bridges, and the sheath layer sequentially comprises a heat conduction enhancing layer, an infrared reflecting layer and a dynamic temperature adjusting layer from inside to outside. Dynamic heat and humidity collaborative management, intelligent temperature response, radiation heat management and structural stability are effectively improved, the heat retention property and moisture permeability of the fabric are improved, self-adaptive adjustment can be achieved according to the body temperature of the human body, the heat radiation transmission efficiency is enhanced, the super-hydrophobic interface modification and covalent bonding technology is adopted, and the thermal radiation performance of the fabric is improved. And the functional layer can still keep high bonding strength after being washed repeatedly.

The invention relates to a method (100) for manufacturing a photocatalytic multi-component fiber including the following steps:Supplying a support mixture (110), including at least one thermoplastic polymer;Supplying an active mixture (120), including:at least one organic polymer,at least one photocatalyst at a concentration of at least 10% by weight relative to the weight of active mixture,at least one coupling agent resistant to oxidation,Spinning (130) a multi-component fiber from support and active mixtures;Eliminating (160) the at least one organic polymer on the surface of the multi-component fiber so as to generate a photocatalytic multi-component fiber.The invention also relates to a multi-component fiber, a textile and a filter.

The invention discloses a conductive yarn and a preparation method thereof, relates to the technical field of functional textile materials and composite conductive fiber preparation, and can solve the problems that an existing conductive yarn is poor in flexibility, insufficient in durability, prone to oxidation failure and difficult to integrate multiple functional performances. The preparation method comprises the following steps that S1, PBO yarn is soaked in a dopamine solution, a PDA modification layer is formed on the surface of the PBO yarn through a polydopamine self-polymerization reaction, and the PDA modification layer provides a chelation site and a bonding interface for metal deposition; s2, the PDA modified PBO yarn obtained in the step S1 is subjected to chemical silver plating, silver is deposited on a PDA modified layer to form a continuous conductive layer, and conductive PBO core yarn is prepared; s3, carrying out melt blending and granulation on the low-dielectric-constant flame-retardant filler and thermoplastic polymer resin to prepare flame-retardant composite particles; and S4, spinning by taking the conductive PBO core yarn prepared in the step S2 as a core layer and a melt formed by melting the flame-retardant composite particles prepared in the step S3 as a skin layer to prepare the conductive yarn.

The present invention relates to the field of plastic woven bag processing. The present invention discloses a plastic woven bag wire drawing device, and the problem to be solved by the present invention is that the existing wire drawing machine has low drying efficiency for the plastic film surface. The present invention is composed of a cooling box and an auxiliary drying mechanism. When the plastic woven bag wire drawing device moves back to back through two sliding frames, the upper sliding frame drives the compressed air cylinder to move upward, and the lower sliding frame drives the rectangular tube to move downward and drives the compressed air hollow plate to move downward in the compressed air cylinder, and the gas is pressed into the compressed air hollow plate through the second one-way valve on the lower side of the compressed air hollow plate and transported into the rectangular tube, so that the gas in the rectangular tube squeezes the T-shaped sealing plate to move downward and pushes the air guide tube to deflect with the cross bar of the U-shaped rod as the fulcrum, thereby driving the scraper to deflect and contact the side of the lower sponge roller, and then when the lower sponge roller rotates, the water adsorbed on it is squeezed to the upper side of the air guide tube, ensuring that the lower sponge roller continuously adsorbs the water adhering to the material.