2303results about "Conductive material" patented technology

The invention relates to the technical field of powder metallurgy, in particular to a preparation process of a graphene composite profile prepared from brass waste, which comprises the following steps: selecting the brass waste containing different components according to the application scene of the graphene composite profile; the brass waste materials are smashed into brass block-shaped smashed materials; the preparation method comprises the following steps: adding 0.001-10% by mass of graphene into the brass block-shaped crushed aggregates, and carrying out wet ball milling to form a first-size mixed powder liquid; carrying out semi-solid rotary shearing and stirring processing on the mixture; and continuously extruding the graphene-brass mixed base material to form a graphene composite profile blank, and carrying out post-process to obtain the graphene composite profile capable of overcoming brass spot, line and surface defects. According to the invention, a powder metallurgy process is combined with a medium-temperature continuous extrusion process, so that the brass waste is efficiently and directly recycled without pollution, and the physical properties and chemical properties such as hardness, strength, conductivity, corrosion resistance and high-temperature creep resistance of the composite material are greatly improved. The invention further correspondingly discloses the graphene composite profile and application.

The invention provides an aluminum alloy material, a preparation method thereof and a cable. The aluminum alloy material is prepared from the following components in percentage by mass: 0.03 percent to 0.06 percent of Si, 0.80 percent to 1.2 percent of Fe, 0.15 percent to 0.25 percent of Cu, 0.005 percent to 0.03 percent of B, 0.001 percent to 0.02 percent of Ti, 0.05 percent to 0.15 percent of Y, 0.08 percent to 0.2 percent of the total mass of La and Ce and the balance of Al. The specific content of Fe is added into the aluminum alloy material and cooperates with the rare earth elements Y, La and Ce, and the elongation at break of the aluminum alloy material is improved; meanwhile, due to the addition amount of the Y element, the fatigue resistance of the material is further improved, the toughness of the material is improved, and the heat resistance and cold resistance of the material can be improved. A specific content of boron element is added to form nuclear particles, so that the effect of refining grains is achieved, and the tensile strength of the aluminum alloy material is improved; and meanwhile, the resistivity of the aluminum alloy material is further reduced through cooperation of the boron element and other components. And the titanium element can also play a role in refining grains, so that the tensile strength of the material is further improved. The cable prepared from the aluminum alloy material can meet the requirement of a cable torsion experiment.

A medium-strength and high-conductivity aluminum alloy sheet and its preparation method, which relate to an aluminum alloy sheet and its preparation method. The purpose of the present invention is to solve the technical problem that when other alloying elements are added to existing aluminum alloys to improve the mechanical properties of the alloy, its electrical conductivity will be sacrificed. The medium-strength and high-conductivity aluminum alloy sheet includes the following components by weight percentage: Mg: 0.45-0.53%, Si: 0.4-0.46%, Cu: 0.1-0.5%, Fe≤0.16%, Zn≤0.01%, Mn≤0.03%, Cr≤0.02%, and the balance is impurities and Al. Method: First, prepare an aluminum alloy ingot; second, perform heat treatment; third, perform rolling; fourth, perform solution aging treatment. The electrical conductivity of the medium-strength and high-conductivity aluminum alloy sheet prepared by the present invention is above 53% IACS, while the hardness is higher than 75 HV and the tensile strength is higher than 187 MPa. The present invention can obtain a medium-strength and high-conductivity aluminum alloy sheet.

The invention provides a silver-coated copper material and a preparation method and application thereof. The silver-coated copper material comprises a base body and a silver layer coated on the surface of the base body, the base body comprises copper particles and a silver framework, the silver framework is provided with holes, the copper particles are distributed in the holes of the silver framework, and the silver layer is prepared by adopting a chemical plating method. The pore structure of the silver skeleton and the distribution of the copper particles are utilized, the separation of nucleation and growth of the silver coating is realized, the uniformity and compactness of the growth of the silver coating are ensured, the oxidation resistance and the conductivity of the silver-coated copper material are further improved, the use amount of precious metal silver is greatly reduced while the performance of the material is ensured, and the production cost is reduced. Cost control is realized; when the silver-coated copper material is applied to the fields of photovoltaic and electronic industry, the cost of raw materials can be remarkably reduced, the service life of the raw materials is prolonged, and large-scale use is facilitated.

This application presents ideas for devices that solve energy generation problems and space exploration. This application show idea that is using device such using conductor / element or device. And this application show idea that is using device such using conductive line or carrier device. This application show idea that is using device such using photon or particle related device.

An article is provided to have a transparent substrate; and an electrically-conductive, metal-containing pattern disposed on a surface the transparent substrate. The electrically-conductive, metal-containing pattern has, in order outwardly from a surface of the transparent substrate: a first darkening agent; a metallic pattern; and a second darkening agent. The first darkening agent substantially conforms to a first surface of the metallic pattern, forming a first darkened surface on the metallic pattern. In addition, the second darkening agent is disposed over at least a portion of a second surface of the metallic pattern, forming a second darkened surface on the metallic pattern.

The invention discloses a high-strength, high-conductivity and heat-resistant aluminum-based composite material. The aluminum-based composite material is formed by compounding and sintering 90-95 wt% of an aluminum alloy matrix and 5-10 wt% of a conductive fiber membrane. A trace amount of Zr, Hf and B elements are added into the aluminum alloy matrix, and the effects of refining grains, purifying impurities and improving the electric conductivity, heat resistance and comprehensive mechanical performance of the alloy matrix can be achieved. The conductive fiber membrane is a polyaniline / polyacrylonitrile composite conductive fiber membrane doped with nano-copper particles and cerium oxide particles, and polyaniline and polyacrylonitrile blended spinning can improve the strength and stability of the fiber membrane. And the conductivity of the fiber membrane and the bonding strength of the fiber membrane and an aluminum alloy matrix can be further improved through doping of the nano-copper particles and the cerium oxide particles. The aluminum-based composite material disclosed by the invention has good electrical conductivity and heat resistance and excellent comprehensive mechanical properties.

The invention relates to the technical field of aluminum alloy conductor preparation, in particular to a preparation process of a light alloy conductor for a new energy automobile. The preparation process of the light alloy conductor for the new energy automobile comprises the following steps: firstly, preparing matrix aluminum alloy microspheres and graphene modified aluminum alloy microspheres; the matrix aluminum alloy microspheres and the graphene modified aluminum alloy microspheres are placed in a double-helix conical mixer according to the mass ratio of (11-16): 1 to be evenly mixed to obtain mixed alloy powder, and the mixed alloy powder is placed in a forming mold to be subjected to hot isostatic pressing treatment; and after cooling to room temperature, carrying out solution treatment, artificial aging treatment, first-stage wire drawing processing, first-stage intermediate annealing, second-stage wire drawing processing, second-stage intermediate annealing, third-stage wire drawing processing, third-stage intermediate annealing, fourth-stage wire drawing processing, fourth-stage intermediate annealing and final annealing treatment to obtain the finished light alloy conductor. The high-strength flexible cable has excellent electric conductivity and also has relatively good strength and deflection resistance.

The invention belongs to the technical field of power cables, and particularly relates to a high-performance conductive rare earth aluminum alloy and a processing method thereof.The high-performance conductive rare earth aluminum alloy is composed of, by mass, 0.8 wt.%-1.2 wt.% of Cu, 0.13 wt.%-0.18 wt.% of Ni, 0.15 wt.%-0.25 wt.% of rare earth elements and the balance Al; wherein the rare earth element is an Er element or a Y element. According to the high-performance conductive rare earth aluminum alloy, the alloy strength is remarkably improved on the premise that high conductivity is kept, and synchronous improvement of the strength and the conductivity is achieved.

The present invention provides a low-cost and high-performance aluminum alloy monofilament and a preparation method therefor. Taking the total weight of the aluminum alloy monofilament as 100%, the aluminum alloy monofilament consists of the following elements: Fe: 0.8-1.5%, Si≤0.05%, and the balance being Al and inevitable impurity elements. The preparation method for the aluminum alloy monofilament comprises the following steps: on the basis of the element composition and weight percentage of the aluminum alloy monofilament, at least performing smelting, refining, ultrasonic treatment, continuous casting and continuous rolling, and rod material drawing on raw materials to obtain the aluminum alloy monofilament. The aluminum alloy monofilament provided by the present invention is a low-cost, high-conductivity, and medium-strength aluminum alloy monofilament; the aluminum alloy monofilament has the strength greater than or equal to 280 MPa, the conductivity greater than or equal to 59% IACS, and the elongation greater than or equal to 3%; and the preparation process route of the aluminum alloy monofilament can meet the requirements of enterprises for mass production.

The invention relates to the technical field of preparation of aluminum alloy conductor materials, and particularly discloses a preparation method of an Al-Mg-Si-RE-based aluminum alloy conductor for a 10-35kV middle and low voltage cable, which comprises the following steps: adding a microalloyed intermediate alloy into an aluminum melt by adopting an addition method, stirring, smelting, refining, and casting to form, thereby obtaining the Al-Mg-Si-RE-based aluminum alloy conductor for the 10-35kV middle and low voltage cable. And performing annealing, rolling, wire drawing and aging heat treatment to obtain a final product. Wherein in the smelting stage, raw materials are completely melted at 700-750 DEG C; hexachloroethane is used as a refining agent for refining; annealing at 330-350 DEG C and preserving heat for 4-8 hours; and aging at 300 DEG C for 10 hours after deformation. In the preparation of a wire of a 10-35kV medium and low voltage power cable, the aluminum alloy wire has high conductivity of 62.1-62.5% IACS (International Annealed Copper Standard) and tensile strength of 101-117MPa by simplifying the process steps and optimizing the element ratio on the premise of ensuring the controllable raw material cost, and the mechanical property and electrical property requirements of the medium and low voltage wire are balanced.

An ion exchange membrane includes a resin composition containing a side chain heteroaromatic resin having a structural unit represented by general formula 1, and a cation exchange resin. (In the formula, R1, R2, and R3 may be the same or different and each represents a hydrogen atom, a substituted or unsubstituted aliphatic hydrocarbon group having 1-10 carbon atoms, or a substituted or unsubstituted aromatic hydrocarbon group having 6-10 carbon atoms, R4 represents a directly bonded, substituted or unsubstituted divalent aliphatic hydrocarbon group having 1-10 carbon atoms, or a substituted or unsubstituted divalent aromatic hydrocarbon group having 6-10 carbon atoms, and R3 represents a hydrogen atom, a substituted or unsubstituted aliphatic hydrocarbon group having 1-10 carbon atoms, or a substituted or unsubstituted divalent aromatic hydrocarbon group having 6-10 carbon atoms. Hc represents a substituted or unsubstituted heteroaromatic group having 4-30 carbon atoms, said heteroaromatic group having at least one nitrogen atom in a heteroaromatic ring structure and comprising a 5-membered ring and / or a 6-membered ring structure. > # imgabs0 #

Provided is an insulated electric wire including a conductor and a fluororesin layer containing a melt-fabricable fluororesin that is formed on the conductor, in which a peel strength measured by peeling the fluororesin layer from the conductor is 0.30 N / mm or more.

The present invention relates to a process for the manufacture of a water-soluble n-type conductive polymer, the process comprising the steps of: a) adding a monomer to a solvent system comprising water in the presence of a catalyst, thereby providing a reaction solution; b) allowing the monomer to polymerize in the reaction solution, thereby obtaining an n-type conductive polymer solution; and c) performing post-treatment on the n-type conductive polymer solution to obtain the water-soluble n-type conductive polymer.

The invention provides a stress relaxation resistant low beryllium copper alloy and a preparation method thereof, and belongs to the technical field of alloys. The stress relaxation resistant low beryllium copper alloy is prepared from the following components in percentage by mass: 0.1 to 0.5 percent of Be, 0.1 to 0.5 percent of Co, 0.1 to 0.3 percent of Sn and the balance of Cu. The Sn element and the Co element are added, and a Cottrel air mass can be formed by utilizing Sn atoms and Co atoms to hinder dislocation motion, so that the stress relaxation resistance is improved. The result of the embodiment shows that the stress relaxation rate of the low-beryllium copper alloy is kept at about 10% in the whole test period, the low-beryllium copper alloy has excellent stress relaxation resistance, meanwhile, the tensile strength of the alloy can reach 750-800 MPa, the hardness of the alloy is 240-260 HV, the conductivity of the alloy is 52-55% IACS, and the low-beryllium copper alloy has high strength, high conductivity and excellent stress relaxation resistance.

A high-conductivity copper-based graphene composite wire preparation system comprises a reel-to-reel graphene growth device and a graphite winding device which are arranged in a sealed space, the sealed space is provided with an air inlet and an air outlet, and the interior of the sealed space is a controlled gas environment; the roll-to-roll graphene growth device comprises a pure copper core rolling rod, a tension controller and a quartz plate, a copper foil graphite belt provided with a graphite layer is mounted on the tension controller, and the rolled copper foil belts are separated by the graphite belt; the pure copper core rolling rod is used for rolling a copper foil belt, and a quartz plate for supporting a copper foil graphite belt is arranged between the pure copper core rolling rod and the tension controller; winding the separated graphite layer through a graphite winding device; the device further comprises a hot extrusion device, and the hot extrusion device extrudes the rolled copper foil at high temperature and high pressure. The problems of high temperature control difficulty and copper foil adhesion in the prior art can be effectively solved.

The invention relates to the technical field of high-temperature conductors, in particular to a high-temperature corrosion-resistant stranded wire conductor and a manufacturing method thereof.The high-temperature corrosion-resistant stranded wire conductor is formed by stranding a plurality of composite wire monofilaments, and each composite wire monofilament is formed by compounding a high-conductivity core wire and a high-temperature corrosion-resistant alloy wrapping the core wire; the stranded conductor can maintain the strength and transmit signals for a long time in a 1000 DEG C high-temperature atmospheric environment; the high-conductivity core wire is made of copper or copper alloy; a plurality of composite wires are stranded to form a stranded wire conductor, and each composite wire is formed by compounding a high-conductivity core wire and a high-temperature corrosion-resistant alloy wrapping the outer side of the core wire, so that the wire still keeps high strength, conductivity and excellent oxidation corrosion resistance when working at the temperature of 600-1000 DEG C for a long time, and the problem that in the prior art, the wire is not high in strength, high in conductivity and high in oxidation corrosion resistance is solved. And the conventional conductor cannot work normally in a high-temperature environment.

The invention relates to the technical field of alloys, and discloses a high-strength silver-copper alloy and a preparation method thereof. The acidified carbon nanotubes are subjected to functional modification, methylbenzene-2, 4-diisocyanate reacts with surface active groups of the methylbenzene-2, 4-diisocyanate to introduce-NCO groups, then through hydroxyl reaction of-NCO and 4-hydroxyphthalic acid, a plurality of carboxyl groups are grafted on the surfaces of the carbon nanotubes, the carboxyl groups can firmly adsorb lanthanum nitrate through a coordination effect, and meanwhile, the carboxyl groups can also adsorb lanthanum nitrate through a coordination effect. The rare earth elements are prevented from being separated from the raw materials in the ball milling process, uniform distribution is ensured, the agglomeration tendency of the carbon nanotubes can be reduced, and the dispersity of the carbon nanotubes in the silver-copper alloy is improved; the carbon nanotubes have extremely high axial strength and excellent conductivity, the mechanical and electrical properties of the alloy material can be enhanced through load transfer and a conductive network effect, rare earth lanthanum is segregated at a grain boundary to form a pinning effect to refine grains, the alloy strength is further improved, and finally collaborative improvement of the strength and the conductivity of the silver-copper alloy is achieved.

The invention relates to a solar cell and a preparation method thereof. The preparation method of the solar cell comprises the following steps: filling a mold with first slurry to form a first conductive layer; covering the first conductive layer with second slurry to form a second conductive layer; covering the second conductive layer with third slurry to form a third conductive layer, and covering the second conductive layer with the third conductive layer and the first conductive layer to form a laminated body; and performing laser transfer printing on the laminated body to at least one surface of the battery piece, and co-sintering the laminated body to form a composite electrode so as to prepare the solar battery, wherein the first slurry and the third slurry respectively and independently comprise silver powder, and the conductive metal powder in the second slurry comprises one or more of copper powder, aluminum powder, silver-coated aluminum powder, silver-coated copper powder, copper-aluminum alloy powder and zinc powder. The battery efficiency is improved while the cost ratio of the composite electrode is reduced, and the win-win situation of cost reduction and efficiency preservation is realized.

A system including a power tool and an energy supply device, wherein the energy supply device is provided for supplying the power tool with electrical energy. The energy supply device can be releasably connected to the power tool via an interface, wherein the interface comprises at least a female contact partner and a male contact partner. The interface has a total electrical transition resistance per pole of less than 0.4 milliohm, preferably less than 0.3 milliohm and particularly preferably less than 0.2 milliohm. At least one of the contact partners has a first coating, wherein the first coating has a graphite proportion of less than 30%. In addition, the interface may comprise more than six, preferably more than eight and most preferably more than twelve individual contact points. An energy supply device for use in the system is also provided.

The invention discloses a plasma-enhanced nonlinear conductive coating and a preparation method and application thereof. The preparation method comprises the following steps: coating the surface of an insulating substrate with a composite coating, carrying out induction treatment under the action of an electric field, and curing to obtain the coating, the composite coating comprises a nonlinear conductive material and a coating matrix, wherein the nonlinear conductive material and / or the insulating base material are / is subjected to plasma treatment. According to the method, the nonlinear conductive material can have good nonlinear conductive characteristics under low doping amount through plasma treatment, and meanwhile, three combination effects of mechanical interlocking, physical adsorption and chemical bonding can be introduced on the surfaces of the coating and the insulating base material at the same time through the impact effect of plasma high-energy particles; and the adhesive force of the coating on the surface of the insulating base material is strengthened. The coating obtained by the invention can show remarkable nonlinear conductivity under the condition of low filler doping amount, and compared with a coating in the prior art, the coating has better surface charge regulation and control effect, higher surface flashover voltage and stronger basic adhesive force.

The purpose of the present invention is to provide a composite electrolyte membrane which has excellent chemical resistance and can maintain sufficient mechanical strength even under conditions of high humidity and high pressure, which are the operating conditions for electrochemical hydrogen pumps and water electrolyzers. This composite electrolyte membrane, which is for achieving said purpose, has a composite layer obtained by combining a polyelectrolyte with a mesh woven material that satisfies (1) and (2) and comprises liquid crystal polyester fibers or polyphenylene sulfide fibers. (1): Mesh thickness (μm) / fiber diameter (μm)<2.0. (2): Opening (μm) / fiber diameter (μm)>1.0.

A method for preparing a thin-walled composite pipe is provided, in which an AlN particle / zinc-aluminum 27 (AlNp / ZA27) composite billet is subjected to multi-pass reciprocating extrusion at 250-350° C., and then loaded into a pipe extrusion die. The composite billet is heated with the temperature being in an ascending gradient distribution (within a range of 250-350° C.) along an extrusion direction from the billet to an outlet of the die, then kept a preset temperature for a period of time, and finally extruded at a rate of 0.1-0.5 mm / s to obtain the thin-walled composite pipe. A thin-walled composite pipe prepared by this method is also provided, including an AlN particle and a ZA27 alloy.

A copper-aluminum composite electric energy transmission system and a processing method therefor. The system includes a copper terminal and an aluminum cable. The aluminum cable includes an aluminum conductor and an insulation layer cladding a periphery of the aluminum conductor. The system further includes an electric energy transmission aluminum piece, in which a section of the aluminum conductor with the insulation layer stripped from the aluminum cable is pressed to form a connecting piece. The electric energy transmission aluminum piece and a front end of the aluminum conductor form a molten layer. An end of the copper terminal for being welded to the electric energy transmission aluminum piece is provided with a welding platform. The molten layer clads the welding platform to form a transition layer with metal atoms penetrating into or combined with each other.

The invention discloses a manufacturing process of an aluminum-clad steel composite automobile wire, which solves the problems of high copper consumption, high cost, imperfection of an aluminum strip copper scheme in a low-voltage loop, limited application of an aluminum-clad steel scheme in an automobile cable, low cost and the like in the prior art through the steps of material selection and optimization, cladding, wire drawing, terminal connection and welding. And problems exist in the welding process of the aluminum wire in the connector. According to the aluminum-clad steel composite automobile wire manufactured by the process, on the premise of ensuring the conductivity, the copper consumption is further reduced, the mechanical strength is improved, the corrosion resistance is enhanced, meanwhile, a reliable connection solution is provided, the production cost is reduced, the overall performance of an automobile wire harness is improved, and the service life of the automobile wire harness is prolonged.

Cooled busbars for electric power distribution are disclosed, in particular for electrical vehicles. The cooled busbar includes one or more conductive layers and one or more hollow portions (228). A cooling medium, such as a liquid coolant, can flow through the hollow portion(s). The cooled busbar includes a rigid conductor (223), an insulating layer (224) and a shielding layer (225).

The present application discloses a method for preparing ultra-long carbon nanotubes with an ultra-high yield. The method includes setting a substrate in a reactor, introducing a mixed gas 1 into the reactor to displace the air in the reactor with the mixed gas 1, and raising the temperature in the reactor until the reaction temperature is reached. The mixed gas 1 includes hydrogen and an inert atmosphere gas; continuously introducing a mixed gas 2 and a catalyst solution into the reactor to react to obtain ultra-long carbon nanotubes; the mixed gas 2 includes a carbon source gas, hydrogen, the inert atmosphere gas, and water vapor; the catalyst solution includes a catalyst precursor, a promoter, and a solvent. This method for preparing ultra-long carbon nanotubes with an ultra-high yield is called the substrate interception and orientation strategy. This method uses the substrate placed in the tubular furnace to intercept and orient the floating short tubes generated by chemical vapor deposition, which can significantly extend the growth time of the carbon nanotubes and finally grow them into ultra-long carbon nanotubes.

Provided is a conductive polymer solution capable of providing an electrolytic capacitor having high capacity and exhibiting low ESR characteristics. A conductive polymer solution having a pH of 1.5-5.0 is used, the solution containing 0.01-10% by mass of a polythiophene (A) containing at least one type of structural unit selected from the group consisting of structural units represented by general formula (1) and structural units represented by general formula (2), 0.001-20% by mass of an epoxy compound (B) having at least two or more epoxy groups, and water. In general formulae (1) and (2), R2 represents a hydrogen atom, a methyl group, an ethyl group, a C3-6 linear or branched alkyl group, or a fluorine atom, m represents an integer of 1-10, and n represents 0 or 1. ] # imgabs0 #

The invention relates to the technical field of copper alloy strips, and discloses a vehicle-mounted connector copper alloy strip which comprises the following components in percentage by mass: 0.04 to 0.1 weight percent of Y, 1.5 to 3.5 weight percent of Sn, 0.02 to 0.08 weight percent of P, 0.5 to 2.5 weight percent of carbon nanostructure X and the balance of copper and inevitable impurities, wherein the carbon nano structure X is a compound of a carbon nano tube and fullerene, and the mass ratio of the carbon nano tube to the fullerene is (2-4): 1; the invention also discloses a preparation method. According to the invention, through the comprehensive advantages in the aspects of conductivity and corrosion resistance, the electrical connection function can be stably and reliably realized in a vehicle-mounted connector, powerful hardware support is provided for the intelligent and electric development of an automobile, and the adaptability and safety of the automobile under different working conditions are enhanced; and the maintenance cost of the automobile is reduced, and the downtime caused by faults is shortened.

The invention discloses a compact extrusion type sheath power cable made of copper core crosslinked polyethylene and a processing technology, and relates to the technical field of crosslinked polyethylene insulated power cables, and the compact extrusion type sheath power cable sequentially comprises a conductor layer, a semi-conductive waterproof layer, a crosslinked polyethylene insulating layer, a composite shielding structure layer and a compact sheath layer from inside to outside. Through collaborative design of the gradient coating conductor and five types of stranding processes, conductivity and structural stability are remarkably improved, breakthrough suppression of local discharge capacity and optimization of electromagnetic shielding effectiveness are achieved by combining the insulating layer with the dielectric constants distributed in a gradient mode and the composite shielding structure, and the electromagnetic shielding performance is improved. And with the assistance of a nano enhanced sheath and ultrasonic crosslinking and liquid nitrogen shock cooling manufacturing processes, the cable has ultrahigh mechanical strength, extremely low porosity and excellent flame-retardant property, and the comprehensive performance of the cable is far beyond that of a conventional power cable.