47 results about "Carbon fibers" patented technology

The invention discloses a preparation method and application of a water-soluble carbon fiber sizing agent. The water-soluble carbon fiber sizing agent contains 3-30 parts of water-soluble polymer, 0.04-1 part of adhesive, 0.1-2 parts of emulsifier and 60-97 parts of solvent, wherein the water-soluble polymer refers to a molecule containing a great quantity of one or several of hydroxyl, amino, acylamino and carboxylic acid. The preparation method comprises the following steps: at 60-100 DEG C, adding the water-soluble polymer into the solvent to be completely dissolved, and after the temperature is moderate, adding the adhesive and the emulsifier into the solution, and stirring for dissolution to prepare an integrated solution, thus obtaining the water-soluble carbon fiber sizing agent. Materials adopted by the invention are all non-toxic; after the carbon fiber is treated by using the water-soluble carbon fiber sizing agent, the surface of the carbon fiber contains a large quantity of active functional group, so that the surface hydrophilicity and dispersibility of the carbon fiber are greatly improved, good softness and flexibility of the carbon fiber are guaranteed, and the carbon fiber can be better applied to water treatment and other aspects having requirement for good dispersibility of the carbon fiber.

The invention provides a long-fiber enhanced thermoplastic composite material vane used for a wind energy generator, which is composed of a long-fiber enhanced thermoplastic composite material, wherein the long fiber is glass fiber, carbon fiber or the composite fiber of glass fiber and carbon fiber; the content of the long fiber in the vane is 32-75wt%, the reservation length of the long fiber is 2.8-25mm and can form a mutually-tangled three-dimensional net structure characteristics, and therefore the product has a higher impact resistance, and especially has low-temperature impact resistance; the preferable size of the vane manufactured by the injection molding technology is 46-2200mm; the vane surface is provided with a primer layer; and the primer layer is sprayed with a UV (ultraviolet) photocuring light shade surface. In the product, the vane is manufactured by the injection molding technology, and the product has the excellent performances of simple production technology, low cost, long service life, low specific gravity, low-temperature warping deformation resistance, stable size, no water and moisture adsorption, high strength, low-temperature impact resistance, scratch resistance, ultraviolet aging resistance, chemical solvent corrosion resistance and the like.

The invention provides a cathode for a metal and carbon nano tube or carbon fiber film emitting array and a manufacturing method thereof in the microelectronic technical field. The cathode structure comprises a substrate, a bottom electrode, a resistive layer, an emitter, a knee wall, an insulating layer, a grid electrode and a forming electrode, wherein the bottom electrode layer is firstly formed on the substrate; the resistive layer is arranged on the surface of the bottom electrode layer; a composite film of metal and carbon nano tube or carbon fiber is deposited on the resistive layer as the emitter; the bottom electrode has a patterned structure on a plane; the clearance position of the bottom electrode is provided with a knee wall structure; the insulating layer is arranged on the insulating layer, while a grid electrode structure is suspended on the insulating layer; the forming electrode is arranged on the upmost layer of the whole structure; and the structure layers are all subject to patterning treatment. The cathode for the metal and carbon nano tube or carbon fiber film emitting array and a manufacturing method thereof manufacture a pattern structure by micro machining method and film technology, can realize a field emitting cathode array with complicated structure, and can be integrated with other micro machining processes by the composite plating method. The device preparing device is simple and easy, and can reduce manufacturing cost.

In a rotating grinding- or cutting tool, in particular a grinding wheel or grinding roller, on one body, a coating of abrasive material, e.g. cubic boron nitride (CBN) or diamond is applied. The body (2, 12, 22, 32, 42) has two side walls (2a, 12a, 22a, 32a, 42a; 2a, 12a, 22a, 32a, 42a) which are connected to each other on their peripheral region, with the side walls being constructed with fibre-reinforced composite, in particular carbon fibre-, glass fibre- or synthetic fibre-reinforced composite.

The invention provides a monitoring method of the internal stress of a spacecraft composite material structure in an aging process. The method includes following steps: step1, placing carbon fiber prepreg, a special optical fiber, carbon fiber prepreg, demolding cloth, and adhesive-absorbing felt on a molding mold of the spacecraft composite material structure in sequence, and performing integral sealing by employing a vacuum bag; step 2, performing curing by employing an autoclave process, performing demolding after cooling, and obtaining the spacecraft composite material structure implanted with the special optical fiber at the inner part; and step 3, placing the spacecraft composite material structure in a clean factory building, and performing aging treatment on the spacecraft composite material structure by employing a natural aging method. According to the method, based on a back Rayleigh scattering principle, the special optical fiber is implanted in the spacecraft composite material structure, the monitoring of the internal stress in the aging process is realized by employing an optical frequency domain reflection technology, the spatial resolution is high, the measuring precision is high, the repeatability is good, and basis is laid for improvement of the aging method of the spacecraft composite material structure and the improvement of the dimension stability.

The invention belongs to a truss support structure in the technical field of remote space sensing and aims to solve the technical problem of providing the ring-shaped carbon fiber truss support structure of the coaxial three-reflector spatial optical system. In the technical scheme, the ring-shaped carbon fiber truss support structure comprises an upper carbon fiber support ring, a lower carbon fiber support ring, a first carbon fiber support rod, a second carbon fiber support rod, a third carbon fiber support rod, a fourth carbon fiber support rod, a fifth carbon fiber support rod, a sixth carbon fiber support rod, a first carbon fiber support rod coupling component, a second carbon fiber support rod coupling component, a third carbon fiber support rod coupling component, a fourth carbonfiber support rod coupling component, a fifth carbon fiber support rod coupling component, a sixth carbon fiber support rod coupling component, a first embedded component, a second embedded component, a third embedded component, a fourth embedded component, a fifth embedded component and a sixth embedded component. The upper end and the lower end of the structure are respectively provided with the upper carbon fiber support ring and the lower carbon fiber support ring which adopt the same specifications and are embedded coaxially in a 120-degree angle; the carbon fiber support rods adopt a hollow cylindrical rod structure, and the carbon fiber support rod coupling components are provided with double flange interface structures arranged in a 60-degree angle; and the hollow cylindrical inner holes of two carbon fiber support rods are respectively sleeved on two flange interfaces of the carbon fiber support rod coupling components and are fixedly glued to form the closed ring-shaped carbon fiber truss support structure. The structure has a light weight, high stiffness, high strength and high positioning accuracy.

The invention provides a preparation method of polyacrylonitrile-based hollow carbon fibers. Lignin and polyacrylonitrile are dissolved in a solvent for defoaming at 25-80 DEG C, the obtained spinningsolution is sprayed into coagulation bath through a circular spinneret plate, hot-drawing is performed in pure water, hollow primary fibers are obtained, and the polyacrylonitrile-based hollow carbonfibers are obtained after water washing, drying, pre-oxidation and carbonization. The method has the advantages of having good separation and adsorption effect for medium and large molecules, good solvent resistance and long service life.

The present invention has an object of providing a method for producing a carbon fiber woven fabric in which the length of each warp yarn made of a carbon fiber strand is uniform, weft yarns are straightly arranged without waviness, and that is excellent in quality can be obtained with high productivity (production speed), and is characterized that a method for producing a carbon fiber woven fabric using an air jet loom in which heald in a shedding motion has an angle of repose in a range of 0 to 50° when weaving a uni-directional carbon fiber woven fabric woven with a carbon fiber strand having a fineness of 400 to 6,000 tex as the warp yarn and an auxiliary fiber having a fineness of ⅕ or less of the carbon fiber strand as the weft yarn.

In a stator manufacturing method to manufacture a stator in which divided-core assemblies are arranged in a cylindrical shape, each of which includes a divided-core member having a teeth portion on which a coil is wound. In this method, the divided-core assemblies are inserted in the cylindrical shape into a fixed mold, resin sheets containing glass fibers or carbon fibers are disposed on coil-end portions of the cylindrically-arranged divided-core assemblies, and a slide part of a movable mold applies pressure to and molds the resin sheets, thereby combining the divided core assemblies into a single unit. The movable mold is operated to position the divided-core assemblies in place by a cylindrical part and then apply pressure to and mold the resin sheets by the slide part.

Disclosed therein is a method for preparing a polyacrylonitrile-based polymer for preparation of carbon fiber having a melting point controlled by selecting an optimal energy of microwave, and a method for preparing a carbon fiber through melt spinning using the preparation method for polyacrylonitrile-based polymer. The present invention uses microwave to control the properties of the polyacrylonitrile-based polymer in a simplified way and prepare the polymer optimized for preparation of carbon fiber precursor through melt spinning for a short polymerization time, and provides a means for mass production of the polyacrylonitrile-based polymer being suitable for melt spinning at a temperature lower than the stabilization temperature and acquiring properties adequate to preparation of carbon fiber through stabilization. Hence, the present invention is expected to contribute to mass production of high-performance carbon fibers at reduced cost.

The invention relates to pre-oxidation equipment of a PAN (polyacrylonitrile) precursor end. The pre-oxidation equipment comprises a hot air circulating oven and a tow tension frame, wherein the interior of the hot air circulating ovenis divided into a pre-oxidation cavity, an air return cavity and an air inlet cavity; air flow channels which are communicated are formed by the pre-oxidation cavity, the air return cavity and the air inlet cavity, a fan and a heater are arranged in the air inlet cavity, an entrance is arranged on the side surface of the hot air circulatingoven, an air-tight dooris arranged at the entrance, and the tow tension frame extending into the hot air circulating oven from the entrance is located in the pre-oxidation cavity; a tension adjuster for clamping tows is arranged on the tow tension frame, the tows penetrate through the tow tension frame, and free ends of the tows are fixed on the tow tension frame. The invention further relates to an end connection method. High-quality end pre-oxidation can be realized by the pre-oxidation equipment, and a foundation is laid for follow-up high-quality air connection of two tows; with adoption of the end connection method, the tows can smoothly pass pre-oxidation and carbonization processes, and continuous production of large-tow carbon fibers is realized.

The invention discloses an environment-friendly ceramic coating material for a water faucet. The environment-friendly ceramic coating material for the water faucet is prepared according to a formula comprising the following raw material components in percentage by mass: 80-100 parts of fluorocarbon resin, 8-10 parts of organosilicone oil, 3-5 parts of naphtha, 6-8 parts of polydimethylsiloxane, 10-12 parts of absolute ethyl alcohol, 5-8 parts of alkylphenol polyoxyethylene, 6-8 parts of castor oil polyethenoxy ether, 30-35 parts of an acrylic resin emulsion, 6-8 parts of a nano graphene oxide solution, 10-12 parts of perfluoropolyether, 5-6 parts of sodium chloride, 6-8 parts of disodium hydrogen phosphate, 5-6 parts of aluminum oxide, 6-10 parts of glass fiber powder, 5-8 parts of zinc powder, 6-8 parts of copper powder, 8-10 parts of carbon fiber powder, 8-10 parts of polybutylene terephthalate, 6-8 parts of calcium stearate, 5-8 parts of zinc stearate, 7-9 parts of sodium methyl silicate, 3-5 parts of isobutyl isobutyrate, 6-8 parts of ethlene bisstearamide and 8-10 parts of diethylene glycol monobutyl ether. The environment-friendly ceramic coating material for the water faucet has the advantages of corrosion resistance, wear resistance, high adhesive force, bright and clean appearance and compact coating structure.

The invention discloses a novel powder metallurgical gear. The novel powder metallurgical gear is prepared from iron powder, copper powder, molybdenum powder, vanadium powder, nickel powder, yttrium powder, aluminum powder, magnesium powder, cobalt powder, lead powder, steel slag powder, cupola slag powder, ferroalloy slag powder, modified tree ash powder, graphite powder, epoxidized butyl stearate, silicone oil, methylcellulose, aluminum stearate, polyethylene glycol, ethylene bisstearamide, stearic acid, carbon fibers, glass fibers, boron nitride, epoxy propoxy propyl trimethoxysilane, silica, manganese sulfide, acrylate, an inhibitor, a binder, an enhancer, a cutting agent, a lubricant, a coupling agent and a dispersion agent. According to the novel powder metallurgical gear, through the specific composition proportion, the novel powder metallurgical gear is even in overall density, high in density, high in ductility and area percentage reduction, good in wear resistance, strength and hardness, high in material utilization rate and suitable for quickly producing high-performance gears on a large scale.

The invention relates to ultralight bulletproof cloth and a manufacture method thereof, and belongs to the technical field of textile materials and protection materials. The manufacture method includes taking modified carbon fiber filaments as central core threads, taking modified ultra-high molecular weight polyethylene as a middle coating layer, taking cellulose acetate fibers as an outer coating layer, and preparing covering yarns; blending modified aramid fibers 1414, the modified ultra-high molecular weight polyethylene, graphene fibers and the cellulose acetate fibers to acquire blended yarns; spinning the covering yarns and the blended yarns into the ultralight bulletproof cloth by a spinner, wherein warp yarns are arrayed sequentially according to the principle that one covering yarn is matched with one blended yarn, and weft yarns are arrayed sequentially according to the principle that one covering yarn is matched with two blended yarns. The ultralight bulletproof cloth and the manufacture method thereof have the advantages that full polymer modified materials are adopted, and the carbon fiber framework design is introduced, so that strength, tenacity and impact resistance are high, penetration of low-speed bullets, bomb fragments and the like can be resisted effectively, and safety of human bodies can be guaranteed.

The invention discloses a lightweight high-toughness military shelter structural adhesive and a preparation method thereof. The structural adhesive is prepared by compounding a component A and a component B according to a mass ratio of 100 : 20-50, wherein the component A comprises, by mass, 70-100 parts of epoxy resin, 10-20 parts of an itaconic acid-based hyperbranched polyester ether active toughening agent, 5-20 parts of a diluent, and 20-30 parts of an inorganic filler; and the component B is prepared from the following components in parts by mass: 30-80 parts of modified cardanol-based polyamine, 10-30 parts of polyamide and 1-2 parts of a coupling agent. The military shelter structural adhesive formula is suitable for bonding of honeycomb sandwich panels, polyurethane foam sandwichpanels, aluminum skin or carbon fiber plate skin and the like. The adhesive is low in viscosity, simple in curing process, high in peeling and shearing strength, high in high-temperature creep resistance and stable in quality; main raw materials are derived from renewable resources, so that the military shelter structural adhesive is more environmentally friendly, low in cost, easy to obtain and suitable for large-scale popularization and application. The invention has great application prosepct.

The invention discloses an ultra-light amorphous reinforced carbon fiber table tennis bat. The table tennis bat comprises a core plate, a carbon fiber layer and an amorphous alloy layer, wherein the core plate is mainly made of a foaming material; wherein the carbon fiber layer is coated outside the core plate; and the amorphous alloy layer is coated outside the carbon fiber layer. The surface ofthe table tennis bat is provided with a plurality of layers of amorphous alloy thin strips, the table tennis bat has the advantages of being high in elastic energy storage and moderate in modulus, thebat bottom plate can rapidly generate corresponding deformation during low impact, ball control is facilitated, and the defects that the ball control performance is poor and the hand feeling is poordue to the fact that the rigidity of a carbon fiber table tennis bat is too large are thoroughly overcome; and when the table tennis ball is subjected to large impact, the amorphous alloy has high-elasticity stored energy, so that the strength can be more effectively transmitted to the table tennis ball through a rubber sheet, the ball hitting efficiency is improved by over 30 percent, and the table tennis ball is particularly suitable for attacking methods such as loop balls and the like.

The invention provides a flame retardation material based on fireproof coating and preparing method for the same. The method includes the following steps: step 1: the fireproof coating is prepared bybase resin and a curing agent; step 2: carbon fiber flame retardation fireproof cotton and glass fiber cloth of the same size are cut; step 3: the fireproof coating is scraped on the single side of the glass fiber cloth; step 4: the upper and lower sides of the carbon fiber flame retardation fireproof cotton are covered by the glass fiber cloth coated by the fireproof coating; step 5: the flame retardation material with five layers based on fireproof paint is obtained after putting into a baking box and heat-curing. The carbon fiber flame retardation fireproof cotton with good heatproof and flame retardation properties are adopted, the outside covering structure is formed by regarding the glass fiber load as the outside layer structure, the rate of weight loss under the high temperature ofthe material is greatly reduced by the composite structure, and the wearing property of the flame retardation fireproof material is improved. The flame retardation material has advantages of flame retardation, low rate of weight loss under high temperature, light weight, high strength and excellent chemically-resistant property.

The invention relates to a degradable capacitor plastic shell which is composed of the following components in parts by weight: 35 parts of polyvinyl alcohol resin, 15 parts of gelatin, 10 parts of methyl-silicone rubber, 5 parts of hyaluronic acid, 5 parts of tribasic lead sulfate, 5 parts of nano silicon dioxide, 5 parts of modified wood-plastic powder, 2 parts of chlorinated paraffin, 2 parts of propanediol, 2 parts of palm oil, 5 parts of carbon fiber, 5 parts of metallocene polyethylene, 2 parts of methylsilicone oil, 0.5 part of tobacco cellulose, 2 parts of plasticizer, 2 parts of oxidized polyethylene, 2 parts of dioctyl adipate, 2 parts of rare-earth light conversion agent, 2 parts of cotton fiber, 2 parts of corn starch, 2 parts of polyester rubber powder, 2 parts of butyl acetate and 2 parts of talcum powder. The method has the advantages of simple components and low cost; the finished product is degradable, has stable performance, and does not have toxicity or harm in a high-temperature environment; and meanwhile, by changing the traditional preparation technique and adding the refrigeration procedure, the product has higher safety and still has favorable stability at higher temperature.

A method for manufacturing a bicycle crank, comprises the steps of: blowing air into a blowing opening at a lower end of a backbone so as to fixing the backbone; wherein the backbone has a first embedding portion; using a cutter to cut the backbone; and then form a second embedding portion in the end of the backbone having the blowing opening; winding an unidirectional carbon-fiber cloth around the backbone; adhering carbon-fiber adhesive sheet upon an outer side of the backbone; and heating the backbone so as to firmly secure the carbon-fiber adhesive sheet to the backbone. Furthermore before the blowing step, the method further comprises a step of forming a first embedding portion at one end of the backbone; and embedding a metal first tube into the first embedding portion.

A gas separation membrane module includes hollow polymeric fibers held within a casing, the fibers being anchored by tubesheets at the ends of the casing. A filter material, preferably made of an activated carbon fiber fabric, is integral with the module, such that all gas entering the module must pass first through the filter before reaching the fibers. The filter may have the form of a circular pad affixed to one of the tubesheets. Alternatively, the filter could be a wrap disposed around the fibers, inside the casing. In another alternative, the filter could be provided within a core tube, in cases where a feed gas is introduced through the core of the module. In another embodiment, the filter could be provided in a separate unit from the gas separation module.

The invention relates to an efficient photoelectric converter based on a carbon fiber@ tungsten disulfide nanosheet core-shell composite structure and a preparation method of the efficient photoelectric converter, and belongs to the technical field of novel materials and application thereof. The efficient photoelectric converter provided by the invention adopts the carbon fiber@ tungsten disulfide nanosheet core-shell composite structure as a photoelectric conversion material; furthermore, ohmic electrodes are arranged at two ends of each carbon fiber with the carbon fiber@ tungsten disulfide nanosheet core-shell composite structure, and the carbon fiber is connected in parallel to a solar receiving device and then is connected in series with a low-voltage power supply and an electrical appliance for combination, so that the photoelectric converter is obtained. The photoelectric converter disclosed by the invention is simple in structure; preparation equipment and a process for the device are simple; the prepared device is stable in structure and performance; the product yield is high, the cost is low, and the production process is clean and environment-friendly. The photoelectric converter prepared by the preparation method is high in photoelectric conversion efficiency and can be used as a solar power generation device and a light signal sensitive detector.

A piezoelectric pump vibrator comprises a lower piezoelectric unit (1), an upper piezoelectric unit (2) and a middle gasket (3), the lower piezoelectric unit (1) and the upper piezoelectric unit are in the same size, and the lower piezoelectric unit (1), the upper piezoelectric unit (2) and the middle gasket (3) compose a bimorph-type electric drive vibrator. The piezoelectric pump vibrator can also only comprise the gasket (3) and the lower piezoelectric unit (1) or the upper piezoelectric unit (2), and the gasket (3) and the lower piezoelectric unit (1) or the upper piezoelectric unit (2) are adhered together to compose a single piezoelectric plate type piezoelectric drive vibrator. The piezoelectric pump vibrator is characterized in that the gasket (3) is made from multiaxial glass fiber reinforced or multiaxial carbon fiber reinforced resin, wherein every layer of multiaxial fiber is directionally arranged in a multi-angle amorphous mode. The construction method of the piezoelectric pump vibrator can effectively solve the problem of short service life of the gasket of a piezoelectric vibrator due to repeated fatigue and improve the reliability and the service life of a piezoelectric pump.

The invention provides an automobile air conditioner filter (11) used for an automobile air conditioner (1), wherein the automobile air conditioner filter comprises at least three filter layers including a first filter layer (111), a second filter layer (1112) and a third filter layer (113). The second filter layer is arranged between the first filter layer and the third filter layer, the first filter layer, the second filter layer and the third filter layer are connected with one another in a hot-pressing connection manner, and the second filter layer comprises an adsorbing material at leastpartially made of active carbon fiber. The invention also provides a method (2) for manufacturing the automobile air conditioner filter (11). The method comprises the following steps: carrying out hot-pressing connection treatment (201) on the first filter layer (111), the second filter layer (112) and the third filter layer (113) so as to form a filter base material; carrying out pleating treatment (202) on the filter base material which is hot-pressed and connected together; and carrying out cutting treatment (203) on the filter base material through pleating treatment.

The invention discloses a method for preparing a feeding nozzle for a continuous high-purity alumina melting furnace. The continuous high-purity alumina melting furnace consists of a cooling water jacket furnace shell 1, a carbon fiber heat insulation material 2, a ceramic inner container seat 3, graphite heating elements 4, a ceramic inner container 5, the feeding nozzle 6, a furnace body upper cover 7, an upper cooling cavity 8, a hearth 9, a lower cooling cavity 10 and a furnace body lower cover 11, wherein a cooling water jacket is adopted in the cooling water jacket furnace shell; and the feeding nozzle for the continuous high-purity alumina melting furnace is made of a composite material prepared from reactive sintered aluminum nitride and hafnium boride and used at the temperature of between 1,600 and 2,200 DEG C in the atmosphere of nitrogen. The feeding nozzle for the continuous high-purity alumina melting furnace have the advantages of uniform microstructure, high strength, high overall reliability, high oxidation resistance, high-purity alumina pollution prevention, capability of being used for long time at the temperature of 2,200 DEG C, continuous production, high production efficiency and the like.

The invention belongs to the technical field of fabric processing and preparation, and particularly relates to an antibacterial wear-resistant fabric. The fabric comprises the following substances inparts by weight of 18-22 parts of pearl fibers, 10-15 parts of soybean protein fibers, 20-25 parts of modal fibers, 10-15 parts of coconut carbon fibers, 5-8 parts of polyester fibers and 14-18 partsof a composite treating agent. The fabric has good antibacterial and wear-resistant properties, good crease resistance, good moisture conductivity and air permeability and high production benefit.

The invention discloses explosion-proof glass. The explosion-proof glass comprises multiple layers of tempered glass and PVB adhesive films sandwiched between two adjacent layers of tempered glass. The tempered glass comprises the following components in parts by weight: 110-120 parts of quartz sand, 20-25 parts of nanometer carbon fibers, 12-15 parts of boric oxide, 2-3 parts of nanometer zinc oxide, 8-10 parts of bentonite, 5-6 parts of aluminum oxide, 3-4 parts of zirconium oxide, 3-5 parts of potassium carbonate, 2-3 parts of mirabilite and 0.5-1 part of antimony powder. The explosion-proof glass provided by the invention has relatively high strength, rigidity and toughness and a good explosion-proof effect.