192results about "Physical treatment" patented technology

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.

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%.

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.

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.

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.

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.

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.

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.

This application provides a negative electrode and a method for manufacturing the same, as well as a battery cell, battery and power consumption device including the same, wherein the negative electrode comprises a negative electrode current collector and a coating provided on at least one surface of the negative electrode current collector, the coating comprises a flexible carbon material, the flexible carbon material comprises ultrafine pores with a pore diameter of 0.8 nm or less, and the pore volume of the ultrafine pores with a pore diameter of 0.8 nm or less is V mic It is stated that the pore volume of the flexible carbon material is V total The unit is cm. 3 / g is V mic :V total The ratio is ≥65:100.

The resin composition for melt spinning of the present invention is a filament having a melt viscosity of 250 Pa·s or less at 200° C. and a shear rate of 0.1 s−1 and a tensile strength of 10 MPa or more. The filament can be produced by forming a molten liquid of a resin composition having a melt viscosity of 250 Pa·s or less at 200° C. and a shear rate of 0.1 s−1 into a filament shape to provide a formed material, and conveying and concurrently cooling the formed material. The present invention also provides a resin composition for melt spinning being a filament, and a method for producing fiber using a melt spinning apparatus.

The application relates to the technical field of chemical fiber post-treatment, and particularly discloses a high-elasticity composite fiber heat treatment process, which comprises the following steps: S1. fiber pretreatment: polyester-polyamide composite raw materials are immersed in a surfactant cleaning solution with a concentration of 1-2 wt%; S2. steam pre-swelling: the pretreated raw materials are placed in a 105-110 DEG C saturated steam environment for 1.5-2.5 minutes; S3. gradient heat setting: the raw materials pass through three temperature-controlled hot air zones in sequence; S4. negative pressure rapid cooling: the heat-set fibers are cooled to a fiber temperature <50 DEG C; and S5. post-treatment setting: the fibers are wound into a cylinder. The fibers can be used in the high-end textile field, have the characteristics of low oil agent residue rate and high breaking strength, and solve the problem that cleanliness and mechanical properties are difficult to coordinate in the traditional process; the product size stability and processing efficiency are improved through the wind speed gradient ratio and humidity control.

This invention discloses an MXene-coated modified PLA nonwoven fabric and its preparation method. The preparation method includes the following steps: preparing an MXene solution using HCl and LiF; preparing PLA nonwoven fabric through electrospinning; etching and plasma surface treatment of the PLA nonwoven fabric to obtain the nonwoven fabric body; and spraying the MXene solution onto the surface of the nonwoven fabric body to obtain the MXene-coated modified PLA nonwoven fabric. This invention establishes a lightweight MXene-coated modified nonwoven fabric preparation technology, breaking through the technological gap in this field. The obtained nonwoven fabric material has good thermal stability, electrical conductivity, and electrothermal / photothermal conversion properties, which can integrate Joule heating and solar photothermal conversion into wearable heating systems, enabling precise body heating in various scenarios such as indoor / outdoor, day / night, sunny / cloudy conditions. Using polylactic acid as the base material is more environmentally friendly while giving the nonwoven fabric good breathability and toughness, enriching its application range.

The invention relates to the technical field of cotton fabric manufacturing, in particular to a charge transfer and transition bacteriostatic pure cotton non-woven fabric and a manufacturing method thereof.The manufacturing method includes the steps that raw cotton is degreased, opened and carded, base cloth is manufactured through a spunlace method, and the pretreated pure cotton non-woven fabric is obtained after drying and impurity removing; the preparation method comprises the following steps: soaking cotton fibers into a charge transfer transition reagent containing alizarin and waterborne polyurethane, accurately loading through a four-roller unit, and curing through 254nm-365nm ultraviolet light, so that the reagent and the cotton fibers form covalent bonds to realize charge transfer transition. An ultrathin polymer film layer is formed on the cloth cover of the product, million-level electron-hole pairs are contained, the initial bacteriostasis rate exceeds 99%, and a good bacteriostasis effect is still kept after the product is washed with water for 150 times. The antibacterial non-woven fabric adopts a natural antibacterial agent, is free of skin irritation and toxic residues, is environment-friendly in production process, has skin friendliness and mechanical strength, is suitable for medical and hygienic products such as surgical gown and medical dressing, and solves the problems of poor washability, potential safety hazards and the like of the traditional antibacterial non-woven fabric.

The fabric includes an inner layer, a metal-coated film disposed on the inner layer, and an outer layer disposed on the metal-coated film. The metal-coated film includes a base layer including a polymer and a metal layer disposed on a first surface of the base layer. The inner layer is bonded to the metal-coated film via first contact points, and the outer layer is bonded to the metal-coated film via second contact points.

The present application relates to the field of shoe leather production, and particularly relates to a production process of fluorine-free dynamic waterproof suede shoe leather. First, the suede microfiber base leather is soaked in a composite biological enzyme preparation to remove surface impurities and open the fiber gap, and then is treated by helium-oxygen mixed gas normal pressure plasma to build micro-pits and active groups on the fiber surface. Subsequently, the base leather is sequentially soaked in waterproof agents containing various modified substances, and a two-stage gradient temperature and pressure padding process is adopted to realize the gradient distribution and crosslinking of the waterproof agent from inside to outside. Finally, a three-stage temperature oscillation drying is adopted, the crosslinking reaction is triggered in the medium temperature section, the siloxane chain is induced to directional arrangement to form a stress buffer layer in the high temperature section combined with mechanical oscillation, and the finished product is obtained through low temperature polishing and setting. The process completely avoids fluorine-containing compounds, solves the problem of easy cracking of traditional waterproof leather in dynamic bending, and maintains the softness of suede. The process is suitable for high-end shoe materials, outdoor equipment and other fields.

The application discloses high-strength high-specific-surface-area activated carbon fiber cloth and a preparation method and application thereof. The activated carbon fiber cloth is woven by polyacrylonitrile pre-oxidized fibers and metal fibers; the metal fibers are composed of polyacrylonitrile pre-oxidized fibers and a metal layer coated on the surfaces of the polyacrylonitrile pre-oxidized fibers. The activated carbon fiber cloth has the advantages of high strength, high specific surface area, low powderization degree, good adsorption performance, mechanical performance and antibacterial performance. The preparation method is simple in operation, does not need to change existing activated carbon fiber cloth production equipment, thus reducing cost, and has high practical value and economic benefits.

The invention discloses a functional fabric preparation method and finishing equipment for realizing fabric functionalization, and relates to the technical field of textile fabric functionalization and finishing equipment. According to the preparation method of the functional fabric, the functional finishing agent and fabric fibers can be triggered to be subjected to chemical grafting reaction through ultraviolet irradiation and / or heating, and the textile fabric is subjected to one-time continuous multifunctional finishing; the finishing equipment comprises two functional modules, an ultraviolet light initiation module and a thermal initiation module, can support different finishing processes of fabrics, realizes chemical covalent bond grafting reactions of different principles, has strong production operability and high flexibility, and has ideal popularization and application values in the fields of textile fabric finishing and engineering.

The invention belongs to the field of post-treatment of high-silica glass fiber cloth, and relates to a high-silica glass fiber cloth cleaning and sewing process. Due to the fact that existing high-silica cloth with the thickness of 0.4 mm is not sintered, the surface of the cloth can become yellow when the cloth works for a long time in a high-temperature working environment (the working temperature is 400 DEG C), and the appearance of a sewing product is changed. If high-silica cloth (sintered) with the thickness of 0.4 mm is used, the sewing quality can be influenced, and the strength of the sewing position is not enough after sewing. In order to overcome the manufacturing pain point of an existing product, the invention is studied, and the main technical means adopted by the invention is as follows: high-silica glass fiber cloth is pre-cleaned by a solvent and then sintered at a low temperature, so that the cleaning treatment of the cloth is completed. The process of cleaning and low-temperature sintering is adopted. The strength of the sewing line position of the cloth can be guaranteed, it can be guaranteed that the cloth does not become yellow or black in the high-temperature working environment (the working temperature is 400 DEG C), and the problem of the pain point of the processing technology is solved.

The application discloses a production process of waterproof and moisture-permeable multi-layer PU synthetic leather and belongs to the technical field of synthetic leather production. The structure comprises a bottom layer, a self-repairing intermediate layer and a surface layer from bottom to top. The preparation method comprises the following steps: firstly, performing surface modification on non-woven fabric, then coating water-based PU resin and entering a coagulation bath; secondly, synthesizing self-repairing water-based PU containing furan / maleimide, coating and hot-pressing to form an intermediate layer; finally, blending temperature-changing substances, cellulose nanocrystals and modified nano-enhancing agents to prepare a surface slurry, coating and hot-pressing, and then performing aging, washing and post-finishing to obtain a finished product. Through the synergistic design of multiple functions, the application constructs gradient moisture-permeable channels, a dynamic self-repairing network and a temperature and moisture sensitive response surface layer, solves the problems that existing synthetic leather is prone to peeling between layers, the performance is irreversibly attenuated after damage and cannot dynamically adapt to temperature and humidity changes, and the product has excellent waterproof and moisture-permeable, self-repairing and intelligent response performance and is suitable for outdoor shoes and clothes, protective equipment and other fields.

The invention discloses a preparation method of reinforcing silk for ancient painting and calligraphy repair, and relates to the technical field of ancient painting and calligraphy repair. According to the method, the repairing problem that silk supplementing is insufficient in silk book ancient calligraphy and painting repairing is effectively solved. For silk ancient calligraphies and paintings propagated to now, the aging degrees of the silk are different, and the strength and color of the silk needing to be supplemented are different. According to the method, the strength and color of the filling silk are treated by utilizing an ultraviolet aging technology, so that the repairing requirements of the ancient calligraphy and paintings with different aging degrees can be more easily met in a short time, flexible adjustment can be performed according to the repairing requirements of the ancient calligraphy and paintings, and the filling silk which is higher in matching degree and more appropriate is prepared; compared with the prior art, the method has the advantages that silk can be provided for repairing various traditional ancient paintings and calligraphies, the harmony repairing requirements of the silk book ancient paintings and calligraphies on strength and glossiness are met, full color and pen connection are facilitated, the repairing effect is improved, and meanwhile, the repairing time cost is greatly shortened.

The application discloses a degradable fiber electrode fabric for three-dimensional electrogastrography monitoring and a preparation method thereof. The preparation method comprises the following steps: subjecting degradable polyglycolide fibers to plasma treatment, and evaporating a gold layer on the polyglycolide fibers; in-situ polymerizing a polypyrrole conversion layer on the surface of the gold layer; in-situ reducing gold nanoparticles on the surface of the polypyrrole conversion layer; coating a poly(1,8-octyleneglycol citrate) solution on the surface of the gold nanoparticle layer to form an insulation layer, and obtaining a degradable flexible fiber electrode; using a knitting technology to synchronously knit the flexible fiber electrode and the polyglycolide fibers to form a three-dimensional flexible fabric structure, removing the insulation layer on a target area of the flexible fabric structure to expose a conductive layer, and obtaining the degradable fiber electrode fabric. The fiber electrode fabric prepared by the application can realize full-curve fitting of a gastric serosal surface, does not need external fixation, and can be used for long-term, stable and real-time multi-dimensional gastric electrophysiological signal acquisition.

The present invention provides an insulating sheet with excellent heat insulation properties and winding processability; and a battery pack equipped with the insulating sheet. [Solution] The heat insulating sheet of the present invention contains inorganic fibers, diatomaceous earth, and sepiolite. The diatomaceous earth content is 30% by mass or more relative to the total amount of inorganic fibers, diatomaceous earth, and sepiolite. The total content of diatomaceous earth and sepiolite is 50 to 90% by mass relative to the total amount of inorganic fibers, diatomaceous earth, and sepiolite, and the heat mass reduction rate when the heat insulating sheet is heated at 450°C for 2 hours is 20% by mass or less.

The application discloses polylactic acid-polycaprolactone degradable woven bag non-woven fabric and a preparation method thereof. The non-woven fabric is prepared from the following components: polylactic acid, polycaprolactone, sodium lauryl sulfate, dopamine-modified nano-titanium dioxide composite, a compound system of citric acid and epoxy soybean oil, a combination of sodium carboxymethyl cellulose and calcium dodecyl phosphate, and a combination of montmorillonite and D-isoascorbic acid palmitate. The above system forms a multi-level degradation regulation network structure with surface interface regulation, intermediate layer microstructure regulation and nano functional particle synergistic catalysis, and realizes controllable regulation of the degradation rate of polylactic acid-polycaprolactone blended materials. A preparation method is used to prepare the non-woven fabric. The application has the following beneficial effects: the problems of the prior art, such as difficult accurate regulation of the degradation rate of polylactic acid-polycaprolactone blended materials, poor environmental adaptability and limited application scenarios, are solved.

The invention provides high-flatness environment-friendly plastic woven tube cloth and a preparation method thereof, and relates to the technical field of plastic woven tube cloth. The high-flatness environment-friendly plastic woven tube cloth comprises a plastic woven tube cloth substrate, a one-way stress constraint layer and an elastic buffer transfer layer, the plastic woven tube cloth base is formed by interweaving regenerated PP flat filaments in a plain weave mode, the warp density is 10-12 pieces per inch, the weft density is 8-10 pieces per inch, and the monofilament thickness deviation is smaller than or equal to 3%; the unidirectional stress constraint layer is prepared from the following components in percentage by mass: 50%-55% of semi-crystalline PP resin, 25%-30% of directionally-arranged flaky nano talcum powder, 8%-10% of an anchoring type compatilizer, 3%-5% of a unidirectional constraint aid, 3%-5% of nano calcium carbonate and 0.5%-1% of an antioxidant 1010; the one-way constraint auxiliary agent is erucyl amide. And the elastic buffer layer disperses loads, no fracture layering exists under the large loads, the full-PP-based material can be recycled, and the requirements for environmental protection and high-end application are met.

The invention belongs to the technical field of textile ventilation machines, and particularly relates to a textile ventilation machine which comprises a box body and a modification assembly, the box body is used for providing a closed space for fabric cooling and plasma treatment, and the modification assembly is used for conducting modification treatment on fabric through plasmas. The plasma spray gun of the modification assembly can effectively reduce the energy of the plasma through the energy reduction structure in the spray pipe, and irreversible damage of the high energy of the plasma to the fabric is avoided.

The invention provides a composite material as well as a preparation method, a product and application thereof. The composite material comprises special cloth and a high-temperature anti-sticking silica gel interlayer, the high-temperature anti-sticking silica gel is prepared from the following components in parts by mass: 20 to 30 parts of Teflon, 100 parts of a resin matrix, 3 to 8 parts of a coupling agent, 5 to 15 parts of nano filler, 1 to 2 parts of a strong solvent, 0.5 to 1 part of an organic solvent and 0.5 to 1 part of a flatting agent. Compared with an existing material, the anti-sticking performance is remarkably improved, and the battery cell can be effectively prevented from being taken up; the service life is prolonged to 30-50 days; and the hot pressing yield is improved to 98% or above, and the equipment OEE is improved.

The invention relates to the technical field of textile, and discloses a preparation method of a one-way moisture-conducting quick-dry fabric, which comprises the following steps: adding an anionic waterborne polyurethane dispersion, a cationic organosilicon microemulsion, a compound stabilizer, a blocked polyisocyanate cross-linking agent and glacial acetic acid into deionized water, stirring and mixing to obtain a finishing working solution; then carrying out padding treatment on base cloth in the finishing working solution; then, the wet cloth is guided into a direct-current electric field, the anionic waterborne polyurethane dispersoid is enriched towards the inner surface of the fabric under the action of the electric field, and the cationic organic silicon microemulsion is enriched towards the outer surface of the fabric. According to the invention, the anionic waterborne polyurethane dispersion and the cationic organosilicon microemulsion are mixed in the same finishing working solution, and the two components are respectively enriched on different surfaces of the fabric in one finishing process, so that the production process is simplified, and the control on the distribution of the finishing agent in the fabric is improved.

This invention relates to the field of high-temperature protective materials technology, specifically to a CMC heat-resistant sleeve and its preparation method. The preparation method includes the following steps: S1; impregnating a ceramic-based composite fiber cloth in a sol of nano-ceramic particles to obtain a composite fiber cloth; S2: impregnating the composite fiber cloth with a silicone slurry, and after initial curing, coating the surface of the composite fiber cloth with the silicone slurry, followed by secondary curing, and then hot-pressing two composite fiber cloths together to obtain a CMC composite fiber cloth. The CMC heat-resistant sleeve is then prepared using this CMC composite fiber cloth. This preparation method uses a sol-gel method combined with a high-temperature in-situ sintering process to prepare the composite fiber cloth, then impregnates and coats it with a silicone slurry, and finally hot-presses and stacks them together to obtain the CMC heat-resistant sleeve. Its high-temperature resistance range reaches 1100~1400℃, it can withstand molten metal splashes for short periods, has excellent wear resistance, a long service life, maintains overall flexibility, is easy to install and disassemble, and is adaptable to different pipe diameters and bending parts.

The present invention provides an improved spunbond system and process for: providing a plurality of fibers from a spinneret; subjecting the fibers to shock cooling air; the fibers are thinned through a closed stretching unit; reducing the velocity of the plurality of fibers in a diffuser spaced from an outlet of the closed drawing unit in a direction of travel of the fibers, the diffuser having opposing diverging sidewalls; and subjecting the fibers to the applied electrostatic charge before the fibers enter the diffuser, wherein the electrostatic charge is applied by one or more electrostatic charging units.