13 results about "Fiber carbon" patented technology

This invention discloses a carbon fiber reinforced antistatic and flame-retardant aramid fiber composite paper and its preparation method. The antistatic and flame-retardant aramid fiber composite paper adopts a sandwich structure. The top and bottom layers are made of a slurry composed of aramid fiber nanofibers, LDH / MXene composite functional materials, and a dispersant, imparting electromagnetic wave absorption properties and surface flame-retardant protection. The middle core layer is made of a slurry composed of aramid fiber chopped strands, aramid precipitated strands, carbon fiber chopped strands, and a dispersant, forming a supporting framework and constructing a bulk conductive network to ensure the mechanical strength and overall conductivity of the composite paper. Through multi-channel gradient papermaking and programmed temperature-controlled hot pressing processes, interlayer bonding and structural stability are achieved, enabling the material to maintain the inherent high-temperature resistance and flame-retardant properties of aramid fiber while also possessing synergistic properties of antistatic properties, electromagnetic shielding absorption, and high mechanical strength. This effectively solves the technical challenge of traditional materials struggling to achieve multiple functions simultaneously.

This invention discloses a high-reliability composite cable for military aircraft and its manufacturing method, comprising an external load-bearing skeleton, an outer protective layer on the surface of the external load-bearing skeleton, an internal conductive core assembly disposed in the internal cavity of the external load-bearing skeleton, and a filling isolation layer between the external load-bearing skeleton and the internal conductive core assembly. This invention proposes a biomimetic skeletal structure, subverting the traditional inside-out layered structure into an outside-in skeleton-medullary cavity structure; the external load-bearing skeleton simultaneously undertakes mechanical protection and electromagnetic shielding functions, while the internal cavity integrates the internal conductive core assembly; PBO fiber, silicon carbide fiber, and OAPS modified cyanate ester work synergistically to achieve a balance of mechanical, thermal, and electrical properties; and an integrated molding process of forming the external load-bearing skeleton, positioning the internal conductive core assembly, and low-pressure injection filling eliminates the multi-layer interface of traditional cables, fundamentally solving the problem of delamination failure; it also possesses ultra-high strength, extreme environmental tolerance, and low-loss signal transmission capability.

The application relates to a light nano heat insulation plate and a calcium carbide furnace, and relates to the technical field of calcium carbide furnace heat insulation protection. The light nano heat insulation plate is composed of the following components and mass fractions: nano ceramic material, light refractory aggregate, high-temperature binder, anti-cracking fiber and beta-silicon carbide. The nano ceramic material comprises alumina and silicon oxide; the light refractory aggregate comprises alpha-silicon carbide and hollow floating beads; the high-temperature binder comprises aluminum dihydrogen phosphate and silica sol; and the anti-cracking fiber comprises aluminum silicate whiskers and carbon fibers. The preparation method of the light nano heat insulation plate comprises the following steps: dry material preparation, mixed material dispersion, mold pressing, and drying and baking. The light nano heat insulation plate provided in the application has good anti-cracking performance on the basis of ensuring that the light nano heat insulation plate has mechanical strength and high-temperature insulation effect, can meet the high-temperature working condition requirements when applied to the calcium carbide furnace, and can further guarantee stable operation of the equipment.

This invention relates to a tannic acid-modified MOF-based hybrid matrix hollow fiber carbon molecular sieve membrane, its preparation method, and its application. The method includes the following steps: S1, preparing tannic acid-modified MOF particles; S2, preparing spinning solution; S3, preparing a hybrid matrix precursor membrane; S4, carbonization. This invention is the first to design and successfully prepare a MOF-based hybrid matrix hollow fiber carbon molecular sieve membrane. By innovatively utilizing a tannic acid modification strategy, the interfacial compatibility between MOF particles and the cellulose matrix is ​​significantly improved, effectively enhancing the dispersion uniformity of MOF particles in the membrane matrix. This results in a hybrid matrix hollow fiber carbon molecular sieve membrane with uniform pore structure and excellent interconnectivity, achieving highly selective separation of the ethylene / ethane system. This provides a fundamental and innovative approach for the development of high-performance gas separation membranes. This invention achieves superior interfacial bonding and gas separation selectivity that are difficult to achieve with traditional hybrid matrix membranes.

This application relates to the field of fuel cell technology, and provides a carbon paper, its preparation method, and its application. The carbon paper preparation method includes the following steps: performing papermaking treatment on mixed fibers to obtain carbon paper base paper, wherein the mixed fibers include carbon fibers and organic fibers, with organic fibers accounting for 5% to 20% of the total mass of carbon fibers and organic fibers; impregnating and hot-rolling the carbon paper base paper with a mixed slurry containing a binder to obtain a carbon paper precursor; and sequentially performing graphitization and hydrophobic treatment on the carbon paper precursor to obtain carbon paper. This carbon paper preparation method utilizes the high affinity between organic fibers and binders to enhance the bonding strength between binders and fibers in the carbon paper precursor, and carbonizes the organic fibers into new carbon fibers and the binder into a connecting phase, significantly improving the interlayer bonding strength, mechanical properties, and electronic conductivity of the carbon paper, and effectively inhibiting fiber delamination.

The application provides a composite material of a concrete structure, which is composed of components with a mass ratio of silicon powder: wrapping agent: graphene: fiber carbon tube: adhesive: filling material: additive being 1: 0.05-10: 0.0001-0.02: 0.0001-0.02: 0.15-1: 0.01-0.5: 0.001-0.1, and has the cementation, strength and elasticity of the concrete structure, can improve the compactness, tensile strength and crack resistance of the material, reduce the volume change effect of the silicon material in the charging and discharging process, effectively prevent the continuous formation of a new SEI film of the silicon material to cause the consumption of lithium ions, and improve the stability of the composite material; meanwhile, the surface of the silicon material and the conductive agent such as the fiber carbon tube are tightly combined by the adhesive, and the conductivity of the composite material is improved. The application also provides a preparation method of the composite material and the application of the composite material, and the composite material is applied to the negative material of a lithium ion battery, so that the lithium battery has excellent cycle performance.

The present application relates to carbon fiber production manufacturing technical field, specifically disclose a kind of carbon fiber carbonization rate online detection device and method;Device includes box, guide pulley group, multichannel data collector and temperature acquisition component;Box is connected with carbonization furnace by connecting flange;Guide pulley group includes two fiber Bragg grating guide pulleys and two electrode guide pulleys, is separately arranged at the bottom between the front and rear sides of box, for measuring tension, temperature and carrying out electrical measurement;Temperature acquisition component is arranged on the fiber path between two electrode guide pulleys, measures space temperature field;Multichannel data collector collects voltage signal;Method utilizes the device, simultaneously collects the voltage, space temperature field, tension and contact point temperature signal of fiber, according to this to carry out dynamic compensation to original resistance value, and inversion output carbonization rate;The present application is through the synchronous sensing of multiple physical fields and dynamic compensation, effectively eliminates the interference of temperature and tension fluctuation in production process to measurement, realizes the online high-precision detection of carbonization rate.

The application provides a cotton fabric loaded ferrous sulfide composite catalyst and a preparation method and application thereof, and belongs to the technical field of wastewater treatment.The preparation method comprises the following steps: dropping a phytic acid solution into cotton fabric, and then drying to obtain pretreated cotton fabric; performing pyrolysis treatment on the pretreated cotton fabric to obtain modified fiber carbon material; and mixing the modified fiber carbon material and a sulfate mixed solution under a nitrogen atmosphere to obtain the cotton fabric loaded ferrous sulfide composite catalyst.The PABC / FeS composite catalyst prepared by the application has the characteristics of controllable structure, uniform nanoparticle loading and the like, the pore area of the carrier is maximally utilized, the utilization efficiency of metal active sites is improved, and the PABC / FeS composite catalyst has excellent catalytic activity and stability.

Provided in the present invention is a composite material having a concrete structure, the composite material consisting of the following components in mass ratios, the mass ratios of silicon powder: coating agent: graphene: fiber carbon tubes: binder: filling material: auxiliary agent being 1:0.05-10:0.0001-0.02:0.0001-0.02:0.15-1:0.01-0.5:0.001-0.1. The composite material has the cementing property, strength and elasticity of a concrete structure, such that the compactness, tensile strength and crack resistance of the material can be improved, the volume change effect of a silicon material can be reduced during charging and discharging, and the silicon material can be effectively prevented from continuously forming new SEI films and thus consuming lithium ions, thereby improving the stability of the composite material. In addition, a binder is used to tightly bond the surface of the silicon material to a conductive agent such as a fiber carbon tube, thereby improving the conductivity of the composite material. The present disclosure further provides a preparation method for the composite material and the use of the composite material. By applying the composite material to a negative electrode material of a lithium-ion battery, the lithium-ion battery has excellent cycle performance.

This invention discloses a formaldehyde-free adhesive for impregnating specialty decorative paper and its preparation method, relating to the field of formaldehyde-free adhesive technology. The formaldehyde-free adhesive for impregnating specialty decorative paper contains 60-75% composite impregnation adhesive, 5-15% amino-functionalized cellulose nanofibers, 0.8-1.5% carbodiimide, 0.2-0.6% modified cerium oxide nanoparticles, and deionized water. The composite impregnation adhesive is prepared by blending polymethylhydrosiloxane-modified acrylic resin and water-based nano-terminated polyurethane resin at a mass ratio of (7-9):(1-3). The preparation method involves impregnation followed by segmented hot-pressing curing. The decorative paper prepared with this formaldehyde-free adhesive has no formaldehyde release and possesses excellent abrasion resistance, light fastness, water resistance, and dimensional stability, making it suitable for interior decoration, furniture veneer, vehicle interiors, ship decoration, and other applications.

The present application relates to a kind of composite current collector for zinc-based battery and its preparation method, negative plate, zinc-based battery, belong to battery technical field.The composite current collector for zinc-based battery of the present application includes zinc base and the conductive layer attached on zinc base, the zinc base is zinc or zinc alloy or zinc-plated metal;The conductive layer includes metal powder and binder, the metal powder is at least one of copper powder, tin powder, magnesium powder, calcium powder, zinc powder, titanium powder, manganese powder, indium powder, lead powder, cadmium powder, palladium powder, bismuth powder, tungsten powder, vanadium powder.The conductive layer also includes conductive agent, and the conductive agent is at least one of graphite, acetylene black, graphene, carbon fiber, carbon nanotube, carbon fiber ball.The composite current collector for zinc-based battery of the present application sets up conductive layer on the surface of zinc base, and the conductive layer contains metal powder, both ensures the conductivity of current collector, and reduces the cost of current collector to some extent, and then reduces the cost of battery as a whole.

This invention discloses an electronic device housing, comprising a composite sheet and a plastic housing frame. The composite sheet includes a stepped structure with at least one step. The plastic housing frame includes an overmolded structure, which is formed by injection molding to cover the stepped structure, creating an overmolded layer. The composite sheet is made of one or more of the following: thermosetting carbon fiber composite material, alumina ceramic substrate, magnesium-aluminum / titanium-aluminum layered composite material, continuous carbon fiber reinforced thermoplastic composite material, thermoplastic glass fiber / basalt fiber composite material, aramid fiber composite material, glass fiber-carbon fiber hybrid material, and bamboo fiber-carbon fiber / glass fiber hybrid material. The plastic housing frame is made of one or more of the following: plastic material, polycarbonate, polypropylene, polyethylene, nylon, and ABS. This electronic device housing achieves a thin and lightweight design while possessing highly reliable structural stability and controllability.

The application discloses a nano multi-phase reinforced carbon fiber carbon ceramic clutch plate and a preparation method thereof, and relates to the technical field of high-performance friction materials.The application builds a composite system with efficient heat conduction, reinforcement and toughening, and self-lubrication through multi-phase nano modification, a composite ceramic bonding system, interface modification and an optimized preparation process, synergistic effect of each nano phase, solves the problems of poor interface combination, insufficient toughness, large friction coefficient fluctuation and easy sticking of the traditional carbon ceramic material, and the technical pain points of the existing patent that the fiber is not tightly combined with the matrix and is easy to fall off, significantly improves the comprehensive performance of the friction plate, realizes the comprehensive improvement of the ultra-high strength and light weight and other performances of the friction plate, meets the use demand in extreme working conditions, and forms a clear differentiated innovation point.