32 results about "Textile composite" patented technology

The invention provides a textile composite material impact energy absorption simulation method, system and device and a medium, and the method comprises the steps: carrying out the connected domain analysis of a tomography image, and determining the equivalent diameter distribution characteristics of pore defects in a textile composite material; performing stochastic simulation based on the equivalent diameter distribution characteristics in combination with a mesoscopic geometric model of the textile composite material to obtain stochastic pore space distribution of the textile composite material in the resin enrichment area; geometric difference is carried out on the random pore space distribution and the mesoscopic geometric model, and then a mesoscopic finite element model containing pore defects is constructed; and endowing the mesoscopic finite element model with material attributes and carrying out explicit kinetic analysis on impact load, and further determining the impact energy absorption performance of the textile composite material prepared in the batch according to an analysis result. By adopting the scheme of the invention, systematic deviation of impact energy absorption performance prediction caused by model idealization can be reduced.

The invention relates to the technical field of composite fiber preparation, and particularly discloses an anti-pilling textile composite fiber material and a preparation method thereof.The anti-pilling textile composite fiber material is prepared through the following steps that S1, functional fibers are prepared; s2, preparing modified covering yarn; s3, twisting and yarn manufacturing; s4, preparing a composite fiber material; according to the heat-resistant anti-pilling functional fiber, the heat-resistant anti-pilling component is added into the functional fiber, and a flexible long alkyl chain containing unsaturated double bonds on the heat-resistant anti-pilling component can be chemically crosslinked with sulfydryl on the modified sodium alginate to form a three-dimensional network structure; a rigid benzene ring structure contained in the functional fiber and a rigid pyrimidine ring structure contained in the modified sodium alginate can generate pi-pi interaction, and through the combined action of the rigid benzene ring structure and the rigid pyrimidine ring structure, the anti-pilling property, the ultraviolet resistance and the heat resistance of the composite fiber material are improved.

The application discloses an ultra-high molecular weight polyethylene non-woven fabric modified based on liquid metal and MXene and a preparation method thereof, and belongs to the technical field of protective functional textile composite materials. After the ultra-high molecular weight polyethylene non-woven fabric is pretreated through hydrophilic modification, a composite coating material composed of magnetic liquid metal formed by iron powder and liquid metal gallium and MXene is sprayed, then the liquid metal is spread between fibers and bridges MXene and iron powder through rolling treatment, a continuous conductive / magnetic double network is formed, a packaging layer is coated at last, and the ultra-high molecular weight polyethylene non-woven fabric modified based on liquid metal and MXene is obtained. The finishing process of spraying combined with rolling is simple, low in cost and easy to be industrialized; the prepared ultra-high molecular weight polyethylene non-woven fabric modified based on liquid metal and MXene has an electromagnetic shielding efficiency greater than 35 dB in the X wave band, meanwhile, excellent characteristics such as flexibility and wear resistance are maintained, and the unification of light weight and high performance is realized.

The invention belongs to the field of textile composite materials, and provides a PLA and regenerated PET composite moisture-permeable waterproof three-layer fabric. The stereo composite polylactic acid microporous membrane is used as the middle layer, the regenerated polyethylene glycol terephthalate fiber fabric is used as the outer layer, the PLA or PLA / rPET knitted fabric is used as the inner layer, and the three-layer structure is formed by bonding through the reversible ester exchange copolyester hot melt adhesive layer, so that the cooperation and unification of high hydrostatic pressure shielding and high water vapor permeability are realized; wherein the mass fraction of poly (L-lactic acid) and poly (D-lactic acid) of the stereocomplex polylactic acid film is 48-52% respectively, the maximum penetrable pore diameter of micropores is 20-80 nm, and the reversible ester exchange hot melt adhesive has a low-viscosity flow window during processing and keeps interface stability during the service period; the problems that a traditional moisture-permeable waterproof fabric is low in bio-based content, peel strength is reduced after damp-heat aging, wearing noise is large and comfort is poor due to a high-modulus structure and the like are solved, and the moisture-permeable waterproof fabric has wide application value.

This invention discloses a method for preparing an ultralightweight, highly abrasion-resistant TPU / textile composite material for bags and luggage, comprising the following steps: weaving a mesh base fabric using a warp knitting machine; activating and pretreating the surface of a TPU film; coating an adhesive onto the activated surface of the TPU film obtained in the previous step and drying it; hot-pressing the mesh base fabric and the TPU film at multiple points to obtain the TPU / textile composite material; and finishing and shaping the TPU / textile composite material obtained in the previous step. The advantages of this invention include: the prepared composite material possesses multiple advantages such as ultralight weight, high abrasion resistance, softness, strong interface, breathability, and environmental friendliness. It can be widely used in the fabric preparation of various bag and luggage products such as high-end trolley cases, backpacks, outdoor bags, and briefcases, and can also be extended to outdoor products, protective equipment, and other fields, possessing significant industrial application value and market prospects.

This invention discloses a method for treating the joints of GRC decorative panels, belonging to the field of building construction technology. The method includes base layer pretreatment, integrated sealing and buffering joint filling, interface construction, and composite reinforcement layer construction. Specifically, an XPS extruded polystyrene strip is placed and retained at the bottom of the joint to form a buffer layer, while M15 cement mortar mixed with a micro-expansion agent is filled in. After the joint filling layer dries, alloy joint adhesive is alternately applied and woven geotextile is pasted to form a three-adhesive, two-textile composite reinforcement layer, with each layer extending at least 5cm to both sides. This invention constructs a gradient deformation coordination structure combining a rigid joint filling layer, an elastic buffer layer, and a flexible reinforcement layer, effectively solving the problems of cracking and detachment in traditional joints. It has advantages such as excellent crack resistance, simple construction, and good durability, and is suitable for joint treatment of GRC decorative panels in prefabricated buildings.

The invention relates to a bio-based high-adhesion hot melt adhesive as well as a preparation method and application thereof, and belongs to the technical field of adhesives. The hot melt adhesive is prepared by taking bio-based matrix resin compounded by castor oil-based polyamide and bio-based PBAT as a core, matching with a bio-based tackifier and a plasticizer, and supplementing with a cross-linking agent, an antioxidant, a compatibility regulator and a modified inorganic reinforcing filler. The preparation method comprises the steps of raw material drying, filler modification, melt mixing by a twin-screw extruder, cross-linking reaction, filler dispersion, extrusion pelletizing and the like. The bio-based hot melt adhesive provided by the invention solves the problems of insufficient bonding strength, poor heat resistance, poor storage stability and the like of the traditional bio-based hot melt adhesive, has environmental protection property and excellent comprehensive performance, can be applied to the fields of wood bonding, packaging and printing, textile compounding and electronic component packaging, and can complete bonding after being heated, melted and pressurized during use.

The invention relates to the technical field of textile composite materials and printing, and provides a multi-layer composite printed carpet based on a thermal dye sublimation transfer printing and environment-friendly composite process, which sequentially comprises a printed surface layer, a printed layer, a printed layer and a printed layer from top to bottom, the printed surface layer is composed of polyester fiber short plush with the mass per unit area being 150-500g, and the printed layer is composed of polyester fiber short plush and polyester fiber short plush; wherein the polyester fibers are hydrophobic polyester fibers suitable for heat sublimation transfer printing, and the fluff height of the polyester fibers is 2-5 mm; and the buffer stable layer is made of heat-resistant high-rebound polyurethane sponge with the density of 20-70D and the thickness of 3-25mm. The defects in the prior art are overcome, the design is reasonable, the structure is compact, the thermal dye sublimation transfer printing technology suitable for hydrophobic polyester fibers is adopted, dye molecules can enter the fibers, patterns are bright in color, the resolution ratio is high, abrasion resistance and washing fastness are excellent, and the problem that the front face and the back face are transparent is solved. The core links (transfer printing does not need water washing, and compounding adopts water-based glue or flame compounding) of the whole production process reduce wastewater, VOC emission and energy consumption, and better meet the environment-friendly production requirements.

The present invention relates to a process for production of water-absorbing textile composite materials comprising the use of a polymeric composite solution and a textile material (non-woven, woven and other). The textile material is impregnated with the composite polymeric solution, which after thermal treatment is cross-linked in situ. More particularly, the present invention relates to an absorbent textile composite article comprising textile fibers and a polymers network interpenetrating the textile fibers, the polymers network comprising natural polymer crosslinked to synthetic polymer in the absence of non-polymeric crosslinking agent. The textile composite article exhibits excellent absorbency of aqueous media such as food liquids, cosmetic liquids, pharmaceutical liquids or human body secretions.

Heatable cover for warming the feet of a user with shoes on, characterized in that it is formed by a textile composite material comprising an inner textile layer and an outer textile layer, between which a functional layer is arranged, wherein the inner textile layer is made of a fleece-like textile with a basis weight of 50 to 300 g / m² 2 , the outer textile layer is made of a knitted or woven fabric with a basis weight of 50 to 400 g / m² 2 and the functional layer is formed by a microporous and simultaneously hydrophobic membrane with a basis weight of 5 to 50 g / m² 2 is formed, wherein at least one pocket is formed on the outside of the casing in which a battery is stored, and at least one pocket is formed on the inside of the casing in which an electric heating element is stored, wherein the electric heating element and the battery have means for connecting to each other.

The invention discloses a gel state cooperative control method and system for gradient compounding of a multi-layer functional coating of a protective fabric, and belongs to the technical field of high-performance textile composite materials. The invention aims to solve the problems of low interlayer bonding strength and easy function loss in the traditional multilayer coating process. The core of the method is as follows: each functional coating is accurately controlled in a specific'gel state 'through online monitoring and closed-loop regulation; based on the theory, sequentially coating n layers of functional coatings, and controlling the overall curing degree Si of i (i = 1, 2,..., n-1) layers of coating systems to be in a target interval of (55 + 5i)%-(70 + 5i)% step by step to form a gradient gel state complex; then carrying out real-time micro-distance compaction and air exhausting in a gold window within 2-5 minutes; and finally, through temperature and linear pressure synergistically increasing progressive hot-pressing compounding and final synergistic curing, molecular chains are promoted to be fully and mutually diffused at an interface, and a high-strength fuzzy interface is formed.

The invention belongs to the technical field of functional fiber materials and textile composite materials, and discloses a preparation method of hydroxyapatite far-infrared functional fibers, which comprises the following steps: by taking animal bones or shells as raw materials, calcining at 800-1200 DEG C and carrying out wet superfine grinding to prepare natural hydroxyapatite (HAp) superfine particles with the particle size of 50-200 nm; the fiber is endowed with double functions of far infrared emission and antibiosis by taking the fiber as a single functional component. The preparation method comprises the following steps: mixing hydroxyapatite with polyester chips and polylactic acid or polyvinyl alcohol resin at a high speed according to a ratio of 5-20 wt%, and carrying out melt blending granulation in a twin-screw extruder at 160-280 DEG C to obtain hydroxyapatite / polymer composite particles; then drying, melt spinning, cooling setting, stretching and heat setting are conducted on the particles, and the far-infrared antibacterial functional fiber with good interface dispersity and mechanical property is prepared.

This invention relates to a one-piece molded Whipple's Shield impact protection structure textile composite material and its preparation method. The product comprises, from top to bottom, an impact-facing fabric layer, a spacer fabric layer, and a back fabric layer. The impact-facing fabric layer is a single-layer or multi-layer fabric, with adjacent layers bonded together by resin. The spacer fabric layer is a hollow multi-layer structure consisting of a top layer, a bottom layer, and a spacer layer. The back fabric layer is also a multi-layer fabric, with adjacent layers bonded together by resin. The spaces between the impact-facing fabric layer and the top layer of the spacer fabric layer, as well as between the bottom layer of the spacer fabric layer and the back fabric layer, are filled with resin. Resin is impregnated between the back fabric layer, the spacer fabric layer, and the impact-facing fabric layer using a vacuum-assisted resin transfer molding process. After impregnation, the vacuum is removed, and the product is cured and demolded to obtain the final product. This invention features a simple preparation method; the product has high energy absorption, low specific gravity, high damage tolerance, and good impact protection performance.

The present application relates to a kind of fixture for weaving preform surface tensile property test, including two oppositely arranged U-shaped fixed frame, the side plate of the fixed frame is fixedly installed connecting rod, two symmetrically arranged clamping blocks are movably inserted on the connecting rod;The side of the clamping block towards textile composite preform sample is provided with clamping surface, and the other side is pressure surface;Clamping surface is the inclined plane inclined to loading direction, the outside of pressure surface is provided with pressure plate and bears the pressure of pressure plate, so as to fix the position of textile composite preform sample;Pressure plate and side plate are positioned and fixed by movable connecting device, the position of pressure plate is adjusted by movable connecting device;It also includes the test method using the above-mentioned fixture.The present application can be used for testing the surface tensile property of textile composite preform and its composite material with higher surface tensile strength by mechanical clamping mode to fix sample, and the premature failure of sample caused by too small clamping force can be effectively avoided.

This invention discloses a magnetic microcracked textile composite sensor and its preparation method, belonging to the field of intelligent textile technology. The sensor includes a textile substrate layer, a magnetic coating, an induction coil layer, and a moisture-permeable and waterproof encapsulation film. The magnetic coating is applied to the textile substrate layer and contains a mesh-like microcrack pattern. The induction coil layer is disposed on the magnetic coating and is formed by liquid metal embroidery or conductive yarn weaving. The moisture-permeable and waterproof encapsulation film covers the induction coil layer. This invention forms a mesh-like microcrack pattern in the magnetic coating through a pre-stretching-drying process, uses liquid metal embroidery or conductive yarn weaving to form the induction coil, and encapsulates it with a moisture-permeable and waterproof encapsulation film. The resulting sensor has good bending sensitivity, water washing stability, and breathability, meeting the sensing requirements of wearable devices.

Textile protective clothing (1), in particular with a protective function against chemical and / or biological and / or radioactive harmful and / or toxic substances (warning agents) (“ABC protective function or CBRN protective function”), preferably ABC protective clothing (“CBRN protective clothing”), preferably for civilian or military purposes, preferably with improved and / or increased displacement resistance (displacement resistance) of the textile layers of the protective clothing (1), wherein the protective clothing item (1) comprises or is formed from a multi-layered textile material (2), in particular in the form of a multi-layered textile structure or textile composite, wherein the protective clothing item (1) and / or the multi-layered textile material (2) is / are designed to be air-permeable, wherein the multilayer textile material (2) - a textile outer material, in particular a planar and / or two-dimensional, air-permeable outer material (3), in particular a top layer or outer fabric, and - a textile, in particular planar and / or two-dimensional, air-permeable adsorption filter (inner) material (4), in particular inner layer or inner fabric, in particular for the adsorption of chemical and / or biological and / or radioactive pollutants and / or toxins (warning agents), exhibits or is formed from this wherein the protective clothing item (1) is formed from several, in particular at least two, sections (cut pieces) (A, B) of the multilayer textile material (2), wherein adjacent and / or edge-overlapping sections (cut pieces) (A, B) are joined together to form the protective clothing piece (1) by means of sewing and / or by means of a connecting seam (5), in particular at the edge and / or in a connecting area (6) in particular at the edge; wherein the sewing is carried out in such a way and / or the connecting seam (5) is designed in such a way that the protective garment (1) is not perforated and / or seamless on the outside, in particular on the outer side facing exposure to chemical and / or biological and / or radioactive hazardous and / or toxic substances, by the sewing and / or by the connecting seam (5), and / or wherein the sewing is carried out in such a way and / or the connecting seam (5) is designed in such a way that there is no external seam formed in particular by the connecting seam (5), preferably no external seam arranged on the outside facing exposure to chemical and / or biological and / or radioactive pollutants and / or toxins, in particular formed by the connecting seam (5), and / or wherein the sewing is carried out in such a way and / or the connecting seam (5) is designed in such a way that the sewing and / or the connecting seam (5) is covered on the outside, in particular in the direction of the action of chemical and / or biological and / or radioactive pollutants and / or toxins, by the outer material (3), in particular by an outer material section (outer material cut part) (3A, 3B), preferably by a first outer material section (3A).

This invention relates to a textile composite finishing liquid and its preparation method, as well as Janus textiles with a gradient structure and their preparation method, belonging to the field of functional textile technology. The preparation method of the composite finishing liquid includes: obtaining component A by reacting raw materials containing a first hydroxyl-terminated polydimethylsiloxane, a second hydroxyl-terminated polydimethylsiloxane, and a crosslinking agent; reacting a two-dimensional material dispersion with a thermosensitive polymer to obtain a two-dimensional material grafted with the thermosensitive polymer; assembling the two-dimensional material grafted with the thermosensitive polymer into a monolayer film, and then grafting a hydrophobic silanol onto the other surface of the monolayer film to obtain thermosensitive nanosheets; mixing the thermosensitive nanosheets with an organic solvent to obtain component B; and mixing component A and component B to obtain the composite finishing liquid. Janus textiles prepared using this composite finishing liquid exhibit excellent wash durability, unidirectional moisture wicking, contact angle, and temperature responsiveness.

The invention relates to the technical field of functional textile composite materials and surface engineering, and discloses a preparation process of a multifunctional composite material of a drag-reducing coating of a speed-skating suit, and the process adopts a photosensitive resin system comprising a dynamic ester exchange matrix, a surface fluorine-rich monomer, a basic catalyst and a light-latent acid generator. The technological process comprises the following steps: after coating, standing to induce surface enrichment of fluorine-containing components; initiating surface polymerization by utilizing first wave band illumination, activating a photo-latent acid in-situ neutralization catalyst, and closing surface dynamic bond activity to form a low-friction hard layer; and then initiating body curing by utilizing second wave band illumination, and retaining internal dynamic bond activity so as to maintain low-temperature toughness. A chemical gradient structure with hard outside and tough inside is constructed through a single-pot method and an orthogonal step-by-step curing process, the problems that a traditional coating is prone to cracking and interlayer stripping at low temperature are effectively solved, and excellent coating adhesive force and low-temperature crack resistance are guaranteed while the surface friction coefficient is remarkably reduced.

The invention relates to a preparation method of a high-color-rendering textile composite coating and a coating, and the preparation method comprises the following steps: 1, firstly, casting a CS / PVA blended casting film solution on the surface of a textile to form an initial film, and then constructing a porous film by dipping in a saturated sodium sulfate solution; 2, carrying out hydrolytic condensation on tetraethyl orthosilicate outside natural dye molecules under an alkaline condition through a sol-gel method to prepare dye-coated silicon dioxide microspheres, and preparing a dispersion liquid; 3, coating the surface of a porous film with the dye microsphere dispersion liquid to fix microspheres in a porous structure, and drying to obtain a composite coating; the coating comprises a porous film loaded on the surface of the textile and a plurality of silicon dioxide microspheres fixed in the porous film. Therefore, the design has a better color developing effect.

This disclosure relates to relatively thin and light weight multilayer textile composites that can provide a high level of protection from the thermal hazards associated with an electrical are flash. The multilayer textile composites comprise a laminate layer stitched with one or more of a laminate or flame retardant textile layer(s).

The invention relates to the technical field of textile composite materials, in particular to cashmere composite yarn loaded with an aerogel shell layer and a preparation method of the cashmere composite yarn. The invention discloses cashmere composite yarn loaded with an aerogel shell layer and a preparation method of the cashmere composite yarn. The cashmere composite yarn is used for preparing aerogel-cashmere composite yarn supported by in-situ microcrystalline gelation and negative pressure microfluidic technologies. The composite yarn takes cashmere staple fiber as a matrix, after being activated by atmospheric pressure oxygen plasma, the cashmere staple fiber is put into an oligosiloxane-quaternary ammonium salt solution, gel in-situ coating is formed on the surface of the cashmere staple fiber, then the cashmere staple fiber is sent into a freezing-vacuum continuous flow control channel to be subjected to instantaneous freezing, vacuum sublimation and rewetting polycondensation, a nano aerogel shell layer is formed on the surface of the fiber, and the composite yarn is obtained. And blending with aerogel modified polyester staple fibers, twisting and shaping to obtain the cashmere composite yarn loaded with the aerogel shell layer. According to the method, the problems of weak interface bonding of aerogel and cashmere, insufficient warm-keeping gain and hard hand feeling are solved, green and efficient production is realized, and a low-input and fast-output high-added-value functional yarn upgrading path is provided for an industrial end.

The application relates to a weft-knitted spacer tube and a preparation method of a carbon fiber reinforced composite material weft-knitted spacer tube, and belongs to the technical field of textile composite materials. The preparation method of the carbon fiber reinforced composite material weft-knitted spacer tube comprises the following steps: S100, obtaining pre-impregnated carbon fibers; S200, using a weft-knitting method of the weft-knitted spacer tube to knit the pre-impregnated carbon fibers to obtain a carbon fiber weft-knitted spacer tube; and S300, heating and curing the carbon fiber weft-knitted spacer tube to obtain the carbon fiber reinforced composite material weft-knitted spacer tube. The application can quickly prepare the carbon fiber reinforced composite material weft-knitted spacer tube.

The invention belongs to the technical field of photovoltaic textile compounding, and provides a photovoltaic composite material and a preparation method and application thereof. The photovoltaic composite material comprises a flexible conductive textile substrate, an integrated membrane material and a transparent protective layer which are integrally formed through hot pressing, the flexible conductive textile substrate is a conductive network woven by warp yarns and weft yarns, and the warp yarns and / or the weft yarns are conductive yarns; the integrated film material comprises a lower packaging film, a photovoltaic adhesive film and an upper packaging film which are formed by co-extrusion; the photovoltaic adhesive film material comprises a base material and an optical active substance, the lower packaging film and the upper packaging film are made of thermoplastic packaging materials which are the same as and / or compatible with the base material; the upper packaging film and the lower packaging film make contact with and package the transparent protection layer and the flexible conductive textile substrate respectively, and the photovoltaic adhesive film permeates into the flexible conductive textile substrate through hot pressing and makes ohmic contact with the conductive network. The photovoltaic composite material has the advantages of good flexibility, stable photoelectric conversion efficiency, good durability, firm combination with a conductive network and the like, and can be applied to various flexible products for power supply.

This utility model discloses a plasma broadening device for fiber bundles, belonging to the technical field of textile and composite material production equipment. It includes a plasma treatment component, a plasma generating unit, and a compressed gas generating unit. The plasma treatment component includes a fixed plate and a hollow structure connected together. The hollow structure is connected to the compressed gas generating unit through a gas pipe. The hollow structure is connected to the plasma generating unit through a wire. At least one discharge tube is connected to the hollow structure, and the outlet end of the discharge tube faces the fiber bundle to be processed. It can simultaneously broaden and modify the fibers. The processing efficiency of the fiber bundle using this plasma broadening device is significantly higher than that of traditional equipment, thus improving the utilization rate of the equipment.

The invention discloses a high-light-resistance polyester-cotton composite material and a preparation method thereof, and belongs to the technical field of textile composite materials. Aiming at the defects that the traditional ZnO modified polyester cotton material is poor in acid and alkali resistance, easy to agglomerate and insufficient in light resistance, the preparation method comprises the following steps: firstly, preparing clustered ZnO, coating with polyacrylic acid, hydrolyzing with tetraethyl orthosilicate, and depositing a SiO2 layer, so as to obtain ZnO-coated PAA-coated SiO2 composite particles; mixing the composite particles with polyester cotton slurry, spinning, weaving and pre-baking to obtain a finished product. The clustered ZnO realizes dual effects of ultraviolet absorption and scattering, the PAA layer inhibits agglomeration, and the SiO2 layer improves acid and alkali resistance and interfacial compatibility. The obtained composite material is excellent in light resistance and mechanical property, the inherent advantages of polyester cotton are reserved, the preparation process is compatible with an existing production line, and the composite material can be widely applied to the fields of outdoor clothes and industrial textiles.

The invention relates to the technical field of waste filament production, and discloses a textile composite filament production device and a using method thereof.The textile composite filament production device comprises a cutter body, the cutter body is installed on a cutter holder, the cutter holder is slidably connected into a sliding groove in an inner barrel, one end of the cutter holder is connected with a cutter retracting and releasing mechanism used for retracting and releasing the cutter body and preventing the cutter body from being damaged due to overpressure, and the cutter retracting and releasing mechanism is connected with a cutter head. A sliding groove is formed in the upper portion of the cutter body, a laser generator is arranged in the sliding groove, a detection mechanism used for detecting the completeness and cleanliness of a cutter head of the cutter body is further installed on the two sides of the sliding groove, and a flushing mechanism used for cleaning the cutter body is further arranged in the sliding groove. And the light beam is reflected and received by the photosensitive unit, so that whether the surface of the cutter is cleaned or not is detected according to the change condition of the light beam, and the cutter edge integrity can be detected.

The invention relates to the field of textile compounding, and discloses a vinyl acetate-ethylene copolymer emulsion composition and vinyl acetate-ethylene copolymer emulsion for textiles as well as a preparation method and application of the vinyl acetate-ethylene copolymer emulsion composition and the vinyl acetate-ethylene copolymer emulsion, the composition comprises vinyl acetate, ethylene, protective colloid and water, the protective colloid is polyvinyl alcohol which is equivalent to 100 parts by weight of water, and the protective colloid is polyvinyl alcohol which is equivalent to 100 parts by weight of water. The content of the vinyl acetate is 115-121 parts by weight, the content of the ethylene is 21-27 parts by weight, and the content of the protective colloid is 5.5-6.5 parts by weight. By adopting the specific protective colloid, the vinyl acetate-ethylene copolymer emulsion is further adjusted, the cost is low, the method is simple, and the prepared adhesive film can be soft.

A thermal runaway barrier system utilizes a thermal runaway barrier having alternating layers of a woven fabric including high temperature yarns and an elastomer layer, wherein the thermal runaway barrier is thin and flexible to conform to contours of a complex three dimensional enclosure, and has a blast resistance of at least four cycles according to test method UL2596 Torch and Grit (TaG) method, a dielectric strength per unit thickness as defined by a breakdown voltage of at least 12kV / mm, and maintains at least 3.1 kV / mm after a thermal runaway event.

The application discloses a kind of acquisition method and device of fabric composite material yarn geometry uncertainty, belong to composite material process mechanics field.Method includes: based on the distribution law of interlaminar phase difference of target multilayer fabric, establishes several digital unit models of target multilayer fabric;Wherein, the interlaminar phase difference of several digital unit models is different;Each digital unit model is respectively compacted simulation, and the digital unit model after compacted simulation is sliced to obtain several yarn cross-sectional images, to extract yarn geometry parameter;Establish multivariate Gaussian model, and utilize the extracted yarn geometry parameter to fit multivariate Gaussian model, obtain the mixed probability density distribution of yarn geometry parameter.This scheme not only can reduce the human cost and time cost of composite material preparation, sampling and scanning, improve efficiency, can also guarantee accuracy.