41results about How to "Meet conductivity" patented technology

The invention provides a soft material and the preparation method and use, which precede ion plating or magnetic control sputtering metal plating to the soft material, then precede vacuum metal steaming plating, the produced soft material product has good adhering capability, the resistance value is between 0.03 to 103 Omega, can ensure the vertical electricity conduction to the air permeability textile fabric. Or precede ion plating or magnetic control sputtering metal plating to the soft material, then proceed copper plating, and proceed vacuum steaming plating metal then. The resistance of the produced soft electricity conduction is between 0.005 to 0.03 Omega, the adhesive force is good, the erosion performance is better, the material shielding performance is larger than 70bB. The soft material can be used print the base material of circuit board , shielding clothes and various packaging material.

The invention relates to low-diameter high-strength polyacrylonitrile-based carbon fibers and a preparation method thereof. According to the method, acrylonitrile containing itaconic acid and methyl methacrylate is used as a ternary polymerization system, and an organic diol crosslinking agent is added in a polymerization process for polymerizing, so that a spinning stock solution which has a polymer content of 12.5-17.5% and a viscosity of 120-800 CP is obtained; due to the addition of the crosslinking agent, the spinnability and high drafting of the spinning solution with low polymer contentand low viscosity are improved; then, a wet spinning process is adopted and matched with reasonable solidification conditions and a spinning drafting process, so that low-diameter polyacrylonitrile precursor with surface grooves is prepared; the precursor is pre-oxidized, and is carbonized at a low temperature and a high temperature, so as to obtain the monofilament which has the equivalent diameter of 2-3 mum, the tensile strength of more than or equal to 3.5 GPa, and the tensile modulus of more than or equal to 230 Gpa; therefore, the low-diameter and high-strength polyacrylonitrile-based carbon fibers with a regular surface groove structure are obtained. The carbon fiber obtained by method can improve the flexibility of carbon fiber paper for fuel cells.

The invention discloses a three-dimensional circuit manufacturing method. The method comprises the steps that a prototype model is generated through a selective laser sintering method, wherein modified laser sintering powder materials comprising components suitable for laser surface activation are used as the raw materials for the prototype model; preset selective scanning is carried out on the surface of the prototype model through laser, so that a surface activation area is formed; a conductive circuit is formed in the surface activation area through chemical plating. The invention further discloses the modified laser sintering powder materials used for the three-dimensional circuit manufacturing method. According to the three-dimensional circuit manufacturing method and the modified laser sintering powder materials, the limitation brought by traditional SLS processing materials on the application is overcome, meanwhile, a matrix with the complex surface is formed, and the requirements for rapid manufacturing and forming of the conductive circuit and laser activation are effectively met.

The invention provides a preparation method of graphene-asphalt based active carbon. Asphalt, graphene and an activating agent are mixed to obtain a mixed material; under the protection atmosphere, the mixed material is subjected to activating treatment at low temperature; the high-quality graphene-asphalt based active carbon is obtained. Compared with a traditional active carbon preparation process, the preparation method has the advantages that when asphalt is used as raw materials for preparing the active carbon, the graphene is added; the activation temperature can be reduced to be 200 DEGC or more; the dosage of the activating agent is reduced by 2 to 3 times; meanwhile, the carbon conversion rate is improved by 30 to 40 percent; the addition of template agents is not needed; the preparation method is simple; the production cost is low; the method is suitable for large-scale production.

The invention relates to an anti-oxidation silver paste for car windshield glass and a preparation method thereof. A raw material adopts following components and weight percentage contents: 60-80% ofmetal silver powder; 3-6% of glass powder; 2-8% of polymer resin; 0.5-1.5% of organic additive; 0.5-4.5% of inorganic additive; and 10-30% of organic solvent. The anti-oxidation silver paste for the car windshield glass is obtained through steps of material preparation, preparation of a carrier, preparation of the silver paste, and production of the silver paste. Compared with the prior art, according to the prepared product, the requirement of technical indexes including conductivity, adhesion, the tin surface color and the matching property with black glaze can be satisfied, and the productalso has the advantage of anti-oxidation performance.

The invention provides a copper-iron alloy material and a preparation method and application thereof. The copper-iron alloy material comprises, by weight, 5-20wt. % of iron, 0.002-0.05wt.% of RE and the balance copper. The copper-iron alloy material is easy to operate, the smelting temperature is greatly reduced, the smelting temperature in a crucible furnace is 1200-1250 DEG C, and compared withthe temperature of 1600 DEG C or above in a traditional method, energy consumption can be reduced; a vacuum smelting technology is adopted, oxidation in the high-temperature process can be avoided, the high purity of the material is guaranteed, and the oxygen element content can be lower than 150ppm; and the vacuum smelting technology is adopted, subsequent cold drawing deformation is combined, the structure components of a copper-iron alloy wire are uniform, the ductility of the copper-iron alloy wire can reach 24% or above, the wire breaking problem in electromagnetic shielding wire preparation can be reduced, the yield is increased, and the performance requirements for electric conduction and magnetic shielding of the electromagnetic shielding material can be met.

The invention belongs to the field of metal surface modification, and particularly relates to a preparation method of a rare earth modified spinel coating. The preparation method specifically comprises the following steps: uniformly mixing cobalt powder, manganese dioxide powder and lanthanum oxide powder in proportion; preparing an electrode material by adopting a hot-pressing sintering method; then, depositing the electrode material on the surface of stainless steel by adopting a high-energy micro-arc alloying method under inert gas shielding to prepare a cobalt-based compound oxide coating which has good conductivity; and further placing the coating in an air or oxygen environment to heat and preoxidize to prepare a cobalt manganese spinel and lanthanum cobaltate compounded oxide coating. The cobalt manganese spinel and lanthanum cobaltate compounded oxide coating prepared by the process has good high temperature antioxidant and conductive performances, overcomes the problem that the prior spinel coating and metal interfaces are insecure to bind, and the coating is low in compactness and different in coefficient of thermal expansion and the like, and can satisfy the demands of anti-oxidation, conductivity, anti-Cr volatilization and the like on a ferritic stainless steel connector.

The invention provides a kind of refractory metal or stainless steel with an electroplating layer on the surface. The refractory metal or the stainless steel comprises a base material and the electroplating layer formed on the surface of the base material. The base material comprises a refractory metal base material or a stainless steel base material, wherein the refractory metal base material ismade of titanium, or tantalum, or niobium, or other alloy; the electroplating layer comprises a rhodium-ruthenium alloy layer. The electroplating layer has good adhesive force, corrosion resistance and weldability, the welding capability of a refractory metal product is improved, and the refractory metal or the stainless steel is beneficial to industrial application. The invention further providesa refractory metal or stainless steel surface electroplating process.

The invention discloses an ultra-thin metal grid-based transparent electrode and a preparation method thereof, and relates to the technical field of a transparent electrode. The ultra-thin metal grid-based transparent electrode comprises a surface modified flexible transparent substrate; and a conductive metal grid layer with thickness of 1-10nm is deposited on the modified surface of the flexibletransparent substrate. The preparation method of the transparent electrode comprises the steps of grafting a layer of amino group on the surface of the substrate, forming a mask plate by photoresistor adhesive printing, depositing a metal layer with thickness of 1-10nm in the gap of the mask plate, and removing the mask plate to obtain the ultra-thin metal grid-based transparent electrode. By lowering the thickness of the metal grids, the light transmittance of the metal grids is improved; and meanwhile, the metal grids still have relatively high conductivity at the thickness of 1-10nm, so that the problem of "waxing and waning" between the conductivity and the light transmittance of the transparent electrode can be solved, and balance of the conductivity and the light transmittance is realized.

The invention discloses a production method for a medium-strength non-aging aluminum alloy electrotechnical round aluminum rod. The production method comprises the steps of molten aluminum alloying, aluminum alloy melt homogenizing, primary purifying, secondary purifying and still standing, grain refining and filtering, third-time purifying and pouring, rolling and the like. According to the production method for the medium-strength non-aging aluminum alloy electrotechnical round aluminum rod, a certain content of copper, magnesium, boron and rare earth elements are added in electrolytic molten aluminum to improve the strength of an alloy, and meanwhile, the conductivity of the alloy is also met; and three times of the purifying and three times of the filtering are adopted in the production method, the purity of melt is improved, and meanwhile, the quality of the round aluminum rod is also guaranteed.

The invention discloses a manufacturing technology of a bipolar plate. The manufacturing technology comprises the following steps: (1) selecting and using enough polyethylene paraffin, putting the polyethylene paraffin into a container, and heating until the polyethylene paraffin is completely fused; (2) immersing a graphite plate into the fused polyethylene paraffin, and taking out the immersed graphite plate until no bubble is emitted; and (3) hemming the graphite plate through paraffin immersing treatment to guarantee no weeping inside, and then connecting the hemmed graphite plate with theshell of a battery through PVC glue, wherein two sides of the graphite plate through paraffin immersing treatment are both connected with graphite felts as a positive electrode and a negative electrode of the battery; and (4) then after sealing, forming serially connected connecting points of the positive electrodes and the negative electrodes of two batteries on the graphite plate, namely the bipolar plate. According to the manufacturing technology, the polyethylene paraffin material is selected and used as a filler of the graphite plate, on one hand, the permeation problem of the graphite plate is solved, and on the other hand, the electrical conductivity of the graphite plate in a zinc-iodine battery is met; the bipolar plate with small volume and good electrical conductivity is formed; and the problem of filler fusion caused by the fat that the zinc-iodine battery is heated in the using process is also solved.

The invention relates to the field of the preparation of bipolar plates for power supplies, and particularly relates to a plastic bipolar plate and a preparation method thereof. The bipolar plate is prepared from three parts of a conducting material, a resin material and a functional material. The preparation method comprises the following main steps of forcibly mixing the conducting material, theresin material and the functional material, which are in a certain proportion, in a high speed ball mill, and carrying out compression molding on the uniformly mixed materials in a mold at a high temperature, so as to obtain the novel plastic bipolar plate. The plastic bipolar plate can be used for resolving the contradiction between the conductivity and the mechanical performance of a conventional plastic bipolar plate; while the strength and the corrosion resistance of the bipolar plate are improved, the conductivity of the bipolar plate is further ameliorated; further, the bipolar plate prepared by the method has the characteristics of being simple in process and low in raw-material and equipment cost, and the large-scale industrialized production is easily realized.

The embodiment of the invention provides a packaging structure manufacturing method and a packaging structure, and relates to the technical field of packaging. The manufacturing method of the packaging structure comprises the following steps: providing a chip and a heat dissipation cover, wherein the chip is provided with a circuit bonding pad, and the heat dissipation cover is provided with a grounding end and a mounting groove; arranging the chip in the mounting groove; plastically packaging the chip and the heat dissipation cover, and exposing the circuit bonding pad and the grounding end;leading out an RDL circuit from the circuit bonding pad and the grounding end; and filling the RDL circuit with a dielectric layer, and forming a grounding bonding pad and a ball mounting bonding padon the dielectric layer, wherein the grounding bonding pad is connected with the grounding end, and the ball mounting bonding pad is connected with the circuit bonding pad. Because the RDL line is directly led out from the grounding end and the line bonding pad, that is, the heat dissipation cover is directly connected with the RDL line, the reduction of grounding resistance is facilitated, and the service life of the packaging structure is prolonged.

The invention discloses a vehicle body end wall synthesis tool and a process. The vehicle body end wall synthesis tool comprises a tool platform, a supporting copper table and a pressing assembly, and an auxiliary electrode is arranged on the tool platform; the supporting copper table is arranged on the tool platform, used for loading an end wall auxiliary plate and an end wall assembly, and can form continuous surface support for a to-be-welded part between the end wall auxiliary plate and the end wall assembly; the supporting copper table is electrically connected with the auxiliary electrode; and the pressing assembly is arranged on the tool platform and used for pressing the end wall auxiliary plate and the end wall assembly on the tool platform. The tool is reasonable in structural design, and through the arrangement of the supporting copper table, the problems that in the prior art, due to the fact that part of end wall auxiliary plate faces are not supported, the flatness is poor, welding point indentations are deep due to the welding mode, the welding difficulty between the end wall assembly and the end wall auxiliary plate is increased, and the welding quality is reduced are solved; and in addition, the invention further provides the vehicle body end wall synthesis process based on the vehicle body end wall synthesis tool, operation steps are simple, and practicability is high.

The invention discloses an electric socket. The electric socket comprises a pedestal, a top cover, a spacing groove, an elastomer, a heat spacer, a conducting strip, a pressure block, a stop block and a wiring apparatus, wherein the inner-side plane of the spacing groove is parallel or vertical to the axisymmetric plane of the top cover slit, the elastomer is placed in the spacing groove and the conducting strip is placed on the side surface of the axisymmetric plane of the top cover slit. The electric socket also comprises a stop block which can control the position of the conducting strip, a thermal insulation layer which can isolate the conducting strip and a pressing piece which can separate the elastomer and the conducting strip. Compared to an electric socket in the prior art, when the electric socket provided in the invention is used, the contact pressure between the sleeve and the slotting tool is lasting, the contact area is large and a certain high temperature can be resisted. Therefore, faults, damages and inconveniences which are caused by too large inserting and plugging forces, large contact resistor and too high temperature rise can be prevented. The costs can be reduced and the invention can be widely applied to many places.

The invention discloses an organic self-supporting single crystal film and a preparation method and application thereof. The organic self-supporting single crystal film is composed of large two-dimensional flaky organic semiconductor single crystals. The preparation method comprises the steps that a sandwich structure formed by an organic semiconductor solution and two ion liquids is provided, wherein the first ion liquid does not mix with the organic semiconductor solution, the second ion liquid slightly mixes with the organic semiconductor solution, the density of the first ion liquid is higher than that of the organic semiconductor solution, and the density of the second ion liquid is lower than that of the organic semiconductor solution; and a solvent in the organic semiconductor solution is slowly dissolved with the second ion liquid and penetrates through the second ion liquid to volatize, so that the organic semiconductor material is slowly self-assembled between the two ion liquids to form the organic self-supporting single crystal film. The organic self-supporting single crystal film has the advantages of solubilized preparation, large-size two-dimensional single crystals,high flexibility and the like, and the preparation method is easy to operate.

The invention discloses an aero-engine electrode and an aero-engine comprising the same. The electrode comprises a temperature-resistant conductive electrode inner core and a temperature-resistant corrosion-resistant electrode outer wall, wherein the electrode outer wall wraps the exposed surface of the electrode inner core. A plurality of the electrodes are mounted in a combustion chamber of the engine and can generate electric fields in the combustion chamber. The electrodes can be mounted in the combustion chamber and are controlled by an external electric field control device to output different voltages, so that the electric fields can be generated between the different electrodes; and the electrodes are arranged at different positions in the combustion chamber of the engine and can generate axial, radial or oblique electric fields, the external electric field control device outputs voltages and controls voltage changes, and therefore the electric fields between the electrodes can be controlled.

The invention provides a processing technology of a vehicle battery connector. The processing technology comprises the following steps: step 1, cleaning oil stain and stains on the surface of the vehicle battery connector; step 2, shielding the conductive region set on the vehicle battery connector by a shielding member; step 3, putting the shielded vehicle battery connector into an oven and preheating the vehicle battery connector; step 4, placing the preheated vehicle battery connector into a fluidization tank, wherein plastic powder is placed in the fluidization tank and the vehicle batteryconnector is taken out after waiting for an alarm sound; step 5, dismantling the shielding member on the taken-out vehicle battery connector and putting the vehicle battery connector into an heat insulation oven for insulation and solidification; and step 6, performing tin or nickel plating on the conductive region on the vehicle battery connector after heat insulation and solidification. According to the method, tinning or nickel plating only needs to be performed on the region needing conduction, thereby reducing the production cost and meeting the conduction and insulation requirements ofthe existing battery connectors.

The invention relates to gray conductive silver paste for automobile glass and a preparation method of the gray conductive silver paste. The raw materials of the conductive silver paste comprise the following components in parts by weight: 50-70 parts of metal silver powder, 10 parts of metal nickel powder, 3-6 parts of glass powder, 2-8 parts of macromolecular resin, 0.5-1.5 parts of an organic additive, 0.5-4.5 parts of an inorganic additive and 10-30 parts of an organic solvent. The silver paste is obtained through the following steps: (1) carrier preparation; (2) preparation of silver paste; (3) production of silver paste production. Compared with the prior art, the invention not only can meet the technical index requirements of conductivity, adhesive force, tin surface color, matching with black glaze and the like of the front windshield of the passenger car, but also has oxidation resistance.

The invention discloses a semiconductor device, a manufacturing method thereof and electronic equipment, relates to the technical field of semiconductor manufacturing, and aims to control the resistance value of a gate electrode, suppress the generation of leakage current and improve the refresh performance of the semiconductor device. The semiconductor device includes a substrate and a gate stack embedded in the substrate, wherein a gate electrode of the gate stack including an upper gate, a lower gate, and a peripheral gate; the upper gate is of an n-shaped structure, the peripheral gate is of a U-shaped structure, the upper gate covers the top surface and the upper portion of the side surface of the lower gate, and the peripheral gate covers the bottom surface and the lower portion of the side surface of the lower gate; and the bottom surface of the upper gate is connected with the top surface of the peripheral gate. The invention also provides a manufacturing method of the semiconductor device. The semiconductor device provided by the invention is applied to electronic equipment.