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514results about "Physical treatment" patented technology

Lightweight cut-resistant four-dimensional structure fabric based on high-performance composite fibers and preparation method thereof

The invention belongs to the technical field of personal protection equipment, and particularly relates to a lightweight cut-resistant four-dimensional structure fabric based on high-performance composite fibers and a preparation method of the lightweight cut-resistant four-dimensional structure fabric. The structure is based on a high-performance composite fiber material and a nano silicon carbide embedding technology of high-performance polyethylene fibers, the hardness bottleneck of a single material is broken through, and multi-fiber compatibility is improved through cooperation of polyurethane fiber surface activation and polyurethane fiber anti-melting modification. The gradient twist core sheath yarn is a high-performance composite yarn, and the strength and the flexibility are balanced. In the aspect of the oversleeve fabric structure, a three-dimensional protection system comprising a honeycomb structure, a silica gel liner and a skin-friendly inner layer is adopted, so that the integration of multiple functions of hydrophobicity, fusion resistance and buffering of a light-weight cut-resistant material is realized. Under the EN 388 standard, 5-level cutting prevention can be achieved, a single high-performance polyethylene fiber cutting prevention oversleeve can only reach 3-4 levels, the weight of the composite fiber material is reduced by 40% compared with that of a full aramid fiber oversleeve, the thickness is reduced by 25%, and the composite fiber material can be suitable for complex scenes such as petroleum and electric power.
Owner:JIANGSU SHUNTIAN YISHANG TECHNOLOGY CO LTD +1

Wear-resistant nanofiber-reinforced protective graphene fibers and their preparation methods and applications

The present invention belongs to the technical field of functional composite fibers, and discloses a wear-resistant nanofiber-reinforced and protected graphene fiber, a preparation method thereof and an application. The wear-resistant nanofiber-reinforced and protected graphene fiber comprises a graphene fiber bundle and nanofibers. The nanofibers coat the graphene fiber bundle in the form of a three-dimensional porous network to form a stress buffer layer; wear-resistant particles are uniformly loaded inside the three-dimensional porous network. The preparation method is as follows: fixing the surface-pretreated graphene fiber on an electrospinning nanofiber yarn machine, forming a nanofiber membrane by electrospinning and uniformly wrapping it on the surface-pretreated graphene fiber, then winding it into a roll, and then performing a hot roll treatment on the wound fiber bundle to obtain the wear-resistant nanofiber-reinforced and protected graphene fiber. The application is: used for weaving to obtain a graphene fiber fabric. The fiber prepared by the present invention and the fabric woven therefrom have excellent mechanical properties, wear resistance, electrical conductivity and thermal conductivity at the same time.
Owner:DONGHUA UNIV

Preparation process of cutting-resistant and puncture-proof protective gloves

The invention discloses a preparation process of cutting-resistant and puncture-proof protective gloves, and belongs to the technical field of preparation methods of protective gloves. According to the technology, the four steps of pretreatment, composite coating material dipping, dipping of different butadiene-acrylonitrile rubber latexes and partitioned vulcanization treatment are adopted, balance of protection performance and wearing comfort is achieved through combination of technology optimization and material innovation, the cutting resistance of the prepared protective gloves reaches the grade E of the GB24541-2022 standard, the puncture resistance and the tear resistance both reach the grade 4, and the service life of the protective gloves is prolonged. And the composite material is good in air permeability and excellent in durability, is particularly suitable for high-risk operation scenes such as military, security and metal processing, and has remarkable technical progress and industrialization value.
Owner:SHANDONG JINGYUANJI LABOR PROTECTION PROD CO LTD

Preparation method of high-strength low-shrinkage composite yarn for spinning

The invention belongs to the technical field of textile material processing, and particularly discloses a preparation method of high-strength low-shrinkage composite yarn for spinning. A preparation method of a high-strength low-shrinkage composite yarn for spinning comprises the following steps: (1) respectively drying ultra-high molecular weight polyethylene and PET polyester, adding maleic anhydride grafted PE, a treated metal organic framework material, boron carbide nanoparticles, cellulose acetate and a silane coupling agent KH550, uniformly mixing, and carrying out melt extrusion to obtain nascent fibers; (2) performing first-stage pre-drafting, second-stage high-temperature tension field drafting and third-stage low-temperature relaxation treatment on the nascent fiber to obtain treated fiber; and (3) dipping the treated fiber in an ethanol solution containing nano SiO, and performing infrared radiation curing to obtain the high-strength low-shrinkage composite yarn for spinning. The composite yarn has good mechanical strength, wear resistance and low contractibility, and the yarn has wide application due to the high breaking strength.
Owner:HANGZHOU LINGJIE LACE&COTTON THREAD CO LTD

All-polyester whole-core flame-retardant conveying belt and preparation method thereof

The invention discloses a full-polyester whole-core flame-retardant conveying belt and a preparation method thereof, and relates to the technical field of conveying belts. The conveying belt comprises a three-layer structure, wherein the inner layer is a plasma-treated full-polyester fiber belt core, the middle layer is a polyurethane flame-retardant composite layer, and the outer layer is a maleic anhydride modified nitrile rubber layer. The preparation method comprises the following steps: carrying out argon plasma treatment on the belt core, drying, preparing waterborne polyurethane resin, a phosphate flame retardant, nano-montmorillonite, a silane coupling agent and carbodiimide into impregnation liquid, carrying out vacuum impregnation on the belt core, and carrying out thermocuring to form the polyurethane composite layer, and finally, mixing the maleic anhydride grafted and modified nitrile rubber with an aluminum hydroxide flame retardant, and covering and vulcanizing. Through plasma activation, interface chemical bonding and a synergistic flame-retardant system, the product has excellent flame retardance and mechanical strength, and meanwhile the problem that layers of a traditional conveying belt are prone to layering is solved.
Owner:KANGWEI NEW MATERIALS TECHNOLOGY RESEARCH & DEVELOPMENT (SHANDONG) CO LTD

Preparation method of insect-proof lyocell fiber

The invention relates to a preparation method of an insect-proof lyocell fiber, and belongs to a functional fiber preparation method in the chemical field. The invention provides a bio-based microcell barrier packaging solution aiming at three major defects of easy breakage, non-environmental response release and toxicity of a chemical cross-linking agent in the existing microcapsule coating. The pH response type microcapsule is constructed through double-layer alternate self-assembly of chitosan and phytic acid, a compact network barrier is formed by electrostatic crosslinking of positive and negative charges, and the structural stability is enhanced by combining a natural cross-linking agent genipin; in the fiber loading stage, plasma pretreatment is adopted to increase the surface roughness, vacuum negative pressure drives microcapsule permeation, and steam setting promotes anchoring setting. Core innovations include an intelligent release mechanism, washability breakthrough, ecological safety and actually measured performance display. The method solves the problem that the lyocell fiber is difficult to decompose the permethrin in the NMMO solvent system, and has the advantages of efficient protection and environmental friendliness.
Owner:SHANGHAI LYOCELL FIBER DEV

Medical natural antibacterial and antiviral mildew-proof wet non-woven fabric, preparation method and application thereof

The application discloses a medical natural antibacterial and antiviral mildew-proof wet non-woven fabric and a preparation method and application thereof, and belongs to the technical field of medical polymer materials and textiles. The non-woven fabric is prepared from the following raw materials: polyethylene terephthalate long fibers, polyethylene terephthalate short fibers, vinylon fibers and natural antibacterial and antiviral ultraviolet slow-release glue solution. The non-woven fabric is endowed with natural and non-toxic antibacterial and antiviral effects by using the extract of Chinese herbal medicine effective components. Meanwhile, the mechanical properties and the antibacterial and antiviral capacity of the non-woven fabric can be effectively improved by adding nano materials with far infrared function after surface modification to prepare high-efficiency natural antibacterial and antiviral ultraviolet slow-release microcapsule glue solution. The method improves the added value and application field of the wet non-woven fabric and is convenient for large-scale processing and production. The prepared wet non-woven fabric has excellent performance indexes, good air permeability and an antibacterial and antiviral efficiency of 99.99%.
Owner:BAOJI JIAXIN FILTER MATERIALS TECH CO LTD

Reinforced composite yarn for array spinning and spinning method

The invention belongs to the technical field of textile processing, and provides an array spinning reinforced composite yarn and a spinning method. In the invention, the nano array is generated by performing multi-jet polarization and ionization on the unsaturated solution by a needle-free electrostatic array ionization device, and the surface tension and ionization state of the unsaturated solution are changed by controlling the concentration and electrostatic voltage of the unsaturated solution. The jet flow and the liquid drops are charged in the electric field and break through the Rayleigh limit to be broken to form the nano array. After being embedded into a micron fiber net, the nano arrays are stably anchored on the surfaces of micron fibers through extremely high Van der Waals force and hydrogen bonds, the specific surface area of the micron fibers and the contact area between the fibers are increased, fiber cohesion and friction in yarn are enhanced, and mechanical enhancement (especially breaking strength) and quality improvement of regenerated fiber textiles are achieved.
Owner:DONGHUA UNIV

Stretchable textile sensor wearable device for tracking one or more body metrics

This invention relates to smart textile wearable device with embedded yarn sensors and a computing device comprising a processor and a computer readable medium having encoded thereon a machine learning program that gathers sensor data from the wearable device and generates health parameter output data or real time or long-term feedback to a user for interaction, health and exercise purposes.
Owner:TEXAVIE TECHNOLOGIES INC

Bionic antithrombotic PMP gas-blood exchange membrane based on zwitter-ion gradient grafting and preparation method thereof

The invention belongs to the technical field of biomedical materials, and particularly relates to a poly-4-methyl-1-pentene (PMP) gas-blood exchange membrane for an extracorporeal membrane oxygenation (ECMO) system, which realizes a long-acting antithrombotic function through a bionic interface construction technology. The invention aims to provide a bionic antithrombotic PMP gas-blood exchange membrane based on zwitter-ion gradient grafting, and through material and process innovation, the following problems existing in a traditional ECMO gas-blood exchange membrane: an antithrombotic coating is easy to fall off, and the long-term effect is insufficient; the risk of blood injury caused by dependence on heparin or anticoagulants; and the surface modification process destroys the membrane pore structure and air permeability.
Owner:NANJING TECH UNIV +3

High throughput carbon fiber surface modification

Typical commercial surface treatments for continuous carbon fibers are often unavailable for discontinuous fibers. As such, there is little variety of chopped fiber surfaces leading to non-ideal coating solutions which result in poor interfacial compatibility between fibers and a composite matrix. A method of applying a highly effective coating using a high throughput technique for chopped carbon fibers. The method provides the ability to tune both the coating thickness and chemical functionality using processing parameters. The coatings are evaluated using X-ray photoelectron spectroscopy (XPS) for uniformity and composition. Using this technique, thermoplastic composites are highlighted showing an increase in interfacial shear strength (IFSS) of 25 MPa. This process shows promise for increasing the throughput of surface treatment of chopped fiber on the industrial scale.
Owner:DREXEL UNIV

High-liquid-conductivity composite sodium polyacrylate water-absorbent resin as well as preparation method and application thereof

The invention relates to the technical field of polymer absorbing materials, in particular to high-liquid-conductivity composite sodium polyacrylate water-absorbent resin, a preparation method and application. The water-absorbent resin is composed of a sodium polyacrylate matrix, low-melting-point ES fibers (accounting for 5-15% of the mass) activated through plasma or alkali etching and a surface cross-linking agent (such as glycerol and polyethylene glycol). The method comprises the following steps: melting a fiber sheath layer to coat SAP particles through one-time heat treatment (120-150 DEG C, 30-60 minutes), and meanwhile, constructing a surface chemical network by a cross-linking agent to form a physical-chemical dual structure. The composite SAP has excellent transverse drainage rate, wet compressive strength and circulation structure integrity, the liquid distribution efficiency and stability of the absorption core layer are remarkably improved, and the composite SAP is suitable for the field of hygienic products such as paper diapers and sanitary towels.
Owner:HANGZHOU COCO HEALTHCARE PRODS +3

Modification treatment process of carbon fibers

The invention discloses a modification treatment process for carbon fibers, and belongs to the related technical field of carbon fiber production and processing, the modification treatment process comprises the following steps: S1, pretreatment of carbon fiber powder: cleaning and drying the recycled carbon fiber powder, and performing surface pretreatment; s2, introduction and fixation of a nano material: uniformly dispersing the nano material on the surface of the carbon fiber powder, and fixing the nano material through a physical or chemical method; s3, surface treatment: carrying out surface treatment on the carbon fiber powder by using a chemical reagent; s4, mixing the multifunctional modifier with the carbon fiber powder, and performing mechanical stirring or ultrasonic dispersion to ensure uniform distribution; and S5, testing the mechanical property, the interface bonding force and the dispersity of the modified carbon fiber powder. According to the invention, cleaning and drying of the carbon fiber powder, introduction and fixation of a nano material, surface treatment, mixing of a multifunctional modifier and performance testing are carried out in sequence, and the process can significantly improve the mechanical properties, interface bonding force and dispersibility of the carbon fibers.
Owner:HUNAN CARBON VALLEY NEW MATERIALS CO LTD

Hollow heating fabric for warm keeping of winter gown and preparation process of hollow heating fabric

The invention relates to the technical field of functional textile materials, in particular to a hollow heating fabric for winter gown warm keeping and a preparation process thereof.The hollow heating fabric comprises an inner layer, an outer layer and a middle layer, and a layer fiber solution is sprayed between the inner layer and the middle layer and between the outer layer and the middle layer; the preparation process comprises the steps of premixing, double-field coupling synergistic spinning, foaming, surface modification, construction of the microfluidic moisture-conducting layer and three-stage heat setting. According to the invention, the spraying design of the layer fiber solution can enhance the interlayer binding force of the hollow heating fabric, and the addition of the PCM microcapsule suspension and the TPU base material can form a core-sheath structure of the fabric, thereby significantly improving the mechanical properties of the fabric; the silane coupling agent is added, so that interface bonding among different materials can be enhanced; the energy consumption can be reduced and the attenuation performance of the fabric can be reduced by double-field coupling synergistic spinning auxiliary fabric forming; the three-stage heat setting can improve the dynamic environment adaptability of the fabric.
Owner:NANTONG YIYI INTERLINING

Corrosion-resistant and fracture-resistant plastic woven bag and preparation method thereof

The invention belongs to the technical field of plastic woven bags, and particularly relates to a corrosion-resistant and fracture-resistant plastic woven bag which is prepared from the following raw materials: modified polypropylene particles, a silane coupling agent, modified lignin fiber powder, a corrosion-resistant agent, an antioxidant, a corrosion-resistant synergist, a lubricant and a flexibilizer. The preparation method comprises the following steps: S1, stirring the modified polypropylene particles, the silane coupling agent, the modified lignin fiber powder, the corrosion-resistant agent, the antioxidant, the corrosion-resistant synergist, the lubricant and the flexibilizer, then extruding, cutting into blank filaments, and drawing into flat filaments; s2, fixing the flat filament on a plasma processing device, and starting the plasma processing device to obtain a modified flat filament; and S3, the modified flat filaments are woven, and the corrosion-resistant and fracture-resistant plastic woven bag is obtained. The problems that in the prior art, woven bags are poor in interface compatibility, corrosive media are prone to permeating, and the fracture resistance is insufficient can be solved, and the mechanical property and the corrosion resistance of the polypropylene woven bag are remarkably improved.
Owner:GUANGXI ACAD OF SCI

Cross-linked polymer modified carbon fiber, preparation method and composite material

The invention belongs to the technical field of carbon fiber surface treatment, and particularly relates to a cross-linked polymer modified carbon fiber, a preparation method and a composite material. Aiming at the problem of insufficient interface bonding force between the existing polyarylsulfone / ketone thermoplastic sizing agent and the carbon fiber, the core of the invention is to apply a polyarylsulfone / ketone derivative of which a main chain or a side chain is provided with an electrochemically crosslinkable active group to the technical field of carbon fiber surface treatment. And constructing a covalent bond combined three-dimensional network structure coating on the surface of the carbon fiber in situ. According to the method, firm anchoring of the coating and the carbon fibers is achieved, and the interface load transmission efficiency and the interlayer shear strength of the carbon fiber / polyether-ether-ketone composite material can be remarkably improved. The method is mild in process condition, easy in parameter control and convenient in post-treatment, meets green manufacturing requirements, and has remarkable large-scale production advantages.
Owner:JILIN UNIVERSITY

Moisture-absorbing and quick-drying textile yarn and preparation method thereof

The invention relates to the technical field of textiles, in particular to a moisture-absorbing and quick-drying textile yarn and a preparation method thereof.Hydrophilic fibers (such as cotton and bamboo fibers) and hydrophobic fibers (such as polyester and polyethylene) are compounded to form a gradient moisture-absorbing structure with the inner absorbing function and the outer guiding function. The inner-layer hydrophilic fibers rapidly absorb sweat, the outer-layer hydrophobic fibers form a moisture guiding channel, directional transmission of liquid water is achieved through capillary pressure difference, moisture migration is driven through material surface energy difference, sweat retention is avoided, the special-shaped section and the blending technology are adopted, the porosity and the specific surface area in the yarn are increased, and the moisture absorption rate and the diffusion efficiency are improved. The finally prepared yarn has the advantages of efficient moisture absorption, rapid drying, optimized heat and moisture comfort, durability and functionality combination, and wide application prospects.
Owner:XINJIANG DONGCHUNXING TEXTILE CO LTD

Antibacterial warm-keeping fabric and preparation method thereof

The invention discloses a preparation method of an antibacterial warm-keeping fabric, and relates to the technical field of textiles. When the antibacterial warm-keeping fabric is prepared, firstly, (E)-butyl-2-ene-1, 4-diamine, glyoxal, formaldehyde and butyric acid are used as raw materials to synthesize a polyimidazolium salt antibacterial agent, then the polyimidazolium salt antibacterial agent is copolymerized with polytetrahydrofuran ether glycol and diphenylmethane diisocyanate to prepare an antibacterial polyurethane spinning solution, and the antibacterial fabric is obtained through wet spinning and weaving. The preparation method comprises the following steps: reacting L-cysteine with 3-amino propyl triethoxy silane to prepare cysteamine acyl propyl triethoxy silane, reacting with formaldehyde and phosphorous acid to obtain flame-retardant modified silane, and further preparing a silicon dioxide solution from the flame-retardant modified silane and sol-gel such as methyltrimethoxysilane; finally, the antibacterial fabric is treated with a benzophenone solution and then soaked with a silicon dioxide solution, and the antibacterial thermal fabric is prepared through ultraviolet irradiation, standing gelation, aging and hexane washing. The prepared fabric has excellent antibacterial property, heat retention property and flame retardant property.
Owner:JIANGSU BAILIN HOME TEXTILES CO LTD

Preparation method of nano waterproof fabric

The invention relates to a preparation method of a nano waterproof fabric. According to the method, ellagic acid is introduced in the self-polymerization process of dopamine for in-situ reduction, a polydopamine bonding layer and a silver nanoparticle anchoring layer are synchronously constructed on the surface of nano silicon dioxide, and then perfluorodecyltriethoxysilane is catalyzed by silver nanoparticles for a regioselective click chemical reaction, so that the nano silicon dioxide is obtained. The multifunctional bionic core-shell particles with catalytic activity and super-hydrophobicity are prepared. The particles are compounded with a fluorosilicone copolymer containing dynamic disulfide bonds, a fluorosilicone polymer containing boric acid ester groups and a tannic acid-metal complex to form a double-dynamic cross-linking finishing agent system. After a fabric is subjected to ultraviolet / ozone pretreatment, discontinuous polydopamine nanodot arrays are formed on the surfaces of fibers through short-time dopamine polymerization to serve as catalytic sites, then interface priority crosslinking is triggered by utilizing the sites, and finally, dynamic keys are driven to cooperatively exchange through ultraviolet light fixation and heat treatment, so that the intelligent dynamic waterproof membrane is formed.
Owner:ZHEJIANG GIUSEPPE GARMENT

A rutting-resistant low-carbon asphalt mixture and its preparation method

The application discloses a kind of anti-rutting low-carbon asphalt mixture and preparation method thereof, belong to bitumen processing technical field, for solving the technical problem that the rutting resistance and high temperature resistance of asphalt mixture in prior art need to be further improved, specifically includes the following steps: matrix asphalt is placed in stirrer, heated to 150-160 DEG C, stir 5-10min, add dicumyl peroxide and maleic anhydride, heat preservation reaction 1-2h, post-treatment obtains activated asphalt;The application is mixed with activated asphalt, modified epoxy resin, amino modified regenerated fiber, curing agent, recycled stone, steel slag powder and modified rubber powder, to obtain low-carbon asphalt mixture, not only improve the rutting resistance and high temperature resistance of asphalt mixture, but also improve its mechanical properties.
Owner:ZHONGYIFENG (SUZHOU) MATERIALS TECH CO LTD

Bleaching method and bleaching device

To provide a bleaching method capable of bleaching a colored fiber product even without high temperature treatment or using a chemical agent, and also to provide a bleaching device used for the bleaching method.SOLUTION: A bleaching method involves a step to irradiate a colored fiber with light including a wavelength of 360 to 600 nm in the presence of oxygen.SELECTED DRAWING: Figure 5
Owner:ASAHI KASEI KOGYO KABUSHIKI KAISHA

Preparation method of a partially fluorinated solid-state electrolyte and lithium ion battery

The application discloses a preparation method of a partially fluorinated solid electrolyte and a lithium ion battery, and belongs to the field of electrode materials. The application proposes a partial fluorination strategy, and finds that by changing the ratio of monofunctional polymerizable acrylate monomers and bifunctional polymerizable acrylate monomers in a polymerization precursor liquid and the ratio of polymerizable fluorinated acrylate monomers in a polymerizable acrylate monomer composition, the mechanical properties and ionic conductivity of the finally obtained solid electrolyte can be controlled. The partially fluorinated solid electrolyte prepared by the preparation method provided by the application is stable and reliable, has higher safety, and has excellent mechanical properties and higher ionic conductivity. The partially fluorinated solid electrolyte provided by the application can be used for preparing a lithium ion battery with better safety performance and more excellent electrochemical performance.
Owner:PEKING UNIV

Carbon fiber surface treatment method

The invention relates to a carbon fiber surface treatment method, which improves the interfacial compatibility of carbon fibers and a matrix material, improves the interfacial shear strength by 70-90%, and is simple and convenient to operate, easy to control and suitable for large-scale industrial production.
Owner:DONGHUA UNIV

Electrochemical grafting of carbon fibers with aliphatic amines for improved composite strength

The surface of a carbon fiber is electrochemically treated by a method to form nitrogen containing groups on the surface of the carbon fiber. The method comprises contacting a carbon fiber surface with an aqueous solution comprised of a non-cyclic aliphatic amine and water soluble inorganic hydroxide with said aqueous solution having a pH of at least 9. A positive electrical bias is then applied to the carbon fibers in the aqueous solution relative to another electrode in contact with the aqueous solution, wherein the positive electrical bias is at a voltage above the oxidation potential of water. The treated carbon fibers are useful for making epoxy reinforced carbon fiber composites.
Owner:DOW GLOBAL TECHNOLOGIES LLC

Preparation method of high-resilience expanded polytetrafluoroethylene sealing material

The invention discloses a preparation method of a high-resilience expanded polytetrafluoroethylene sealing material, and belongs to the technical field of high polymer material modification. According to the method, high-molecular-weight or modified polytetrafluoroethylene is used as a matrix, and high-orientation fibers are obtained through ultrasonic premixing, twin-screw melt extrusion, stretching and heat setting; dipping the fiber in a dispersion liquid containing high-entropy alloy nanoparticles, carbon nanotubes and graphene nanosheets, carrying out vacuum drying and gradient heat treatment to form a nano-reinforced precursor fiber, and constructing a porous anisotropic skeleton by adopting conventional or supercritical expansion and a specific weaving process; and interface strengthening and surface functionalization are realized through plasma surface treatment, silane coupling agent chemical grafting and wear-resistant coating coating. The obtained sealing material has low density, high strength, high resilience and low compression set, has excellent chemical medium resistance and anti-static performance, and is suitable for sealing parts of flanges, valves and the like under harsh working conditions of petrochemical engineering, electric power, hydrogen energy, aerospace and the like.
Owner:ANHUI ZHONGWANG KEXIMENG TECH CO LTD

Modified PI fiber, preparation method and polyimide film based on modified PI fiber

The invention relates to the technical field of PI fiber function modification, and discloses a modified PI fiber, a preparation method and a polyimide film based on the modified PI fiber, and specifically, the surface of the modified PI fiber is grafted with a carbon nanotube / carbon black hybrid conductive network through covalent bonds; the network is constructed by bridging a multifunctional connecting agent containing alkenyl, hydroxyl and a quaternary ammonium salt functional group, the hydroxyl of the connecting agent and an acylating chlorination carbon nanotube form an ester bond, the quaternary ammonium salt group electrostatically adsorbs carbon black, and the residual alkenyl and sulfhydrylated PI fiber are subjected to a sulfhydryl-alkene click reaction under the initiation of ultraviolet light to realize covalent grafting. The modified fiber is used as a functional filler, water-soluble polyamide acid is used as a film-forming matrix, and the flexible composite film is prepared through vacuum filtration and thermal imidization. The electromagnetic shielding effectiveness of the thin film in the X wave band reaches 37dB or above, and the tensile strength is gt; the elongation at break is gt; the cable has the advantages of high shielding performance, excellent mechanical strength and excellent flexibility.
Owner:HUIZHOU YIXIN NEW MATERIALS CO LTD

Antibacterial modified polyester blended fabric spinning device

The utility model discloses an antibacterial modified polyester blended fabric spinning device which comprises a supporting frame, a first transmission column and a second transmission column are rotationally installed at one end of the supporting frame, and a protection box is arranged between the first transmission column and the second transmission column. The polyester blended fabric transmitted between the first transmission column and the second transmission column penetrates through the protection box to be connected with the winding drum, the winding drum is rotationally installed at one end of the supporting frame, the protection box is fixedly installed at one end of the supporting frame, and an antibacterial mechanism is fixedly installed in the protection box and can apply antibacterial liquid to the polyester blended fabric penetrating through the protection box. According to the antibacterial polyester blended fabric, through the design of the antibacterial mechanism, titanium dioxide is sprayed, and active oxygen is generated through ultraviolet irradiation, so that the polyester blended fabric has a continuous antibacterial effect, a layer of protective film can be formed on the surface of the fabric through the antibacterial mechanism, bacteria can be continuously killed, bacteria breeding is effectively reduced, and the sanitary level of the fabric is improved.
Owner:JINHUA YINHAI BLEACHING & DYEING CO LTD

Drawing enhancement method and system for carbon nanotube fibers

The application discloses a kind of carbon nanotube fiber drawing enhancement method and system.The drawing enhancement method includes: providing carbon nanotube fiber, carbon nanotube fiber is twisted state;Carbon nanotube fiber is cabled and is treated, and fiber bundle is obtained;Protonation drawing and coagulation bath treatment are carried out to fiber bundle, and precursor fiber is obtained;Protonation reagent and / or coagulation bath reagent in precursor fiber are removed, and carbon nanotube reinforced fiber is obtained.The drawing enhancement method provided by the application is twisted and is cabled and is treated, after the internal each expansion fiber edge shape of fiber bundle is expanded by strong acid protonation, adaptive effect is generated;During drawing process, make stress more evenly be applied on each fiber, improve the stability in the process of fiber drawing, to realize higher drawing rate and drawing rate, finally significantly improve the mechanical strength and consistency of reinforced fiber, and bring very excellent continuity, very beneficial to the application of carbon nanotube fiber.
Owner:JIANGXI NANOTECHNOLOGY RES INST +1

Elastomeric-resin hybrid composite with elastomeric layers

A noise, vibration, harshness (NVH) mitigation material comprising a non-metallic woven fabric substrate impregnated with a resin and one or more elastomeric layers applied to at least one surface of the non-metallic woven fabric substrate is disclosed herein. A method to fabricate a noise, vibration, harshness (NVH) mitigation material comprising preparing an impregnating resin comprising a resin and one or more of a filler and a toughening agent; impregnating a non-metallic woven fabric substrate with the impregnating resin by soaking the non-metallic woven fabric substrate with the impregnating resin, drying the impregnated non- metallic woven fabric substrate, and curing the impregnated non-metallic woven fabric substrate; and applying one or more elastomeric coatings onto the impregnated non-metallic woven fabric substrate is also disclosed herein.
Owner:WOLVERINE ADVANCED MATERIALS LLC