58results about How to "Meet the requirements of electrical conductivity" patented technology

The invention provides a flexible die and a production method for manufacturing flexible printed circuit boards. The production method includes the steps of providing a flexible substrate having a metal layer covering the surface thereof; attaching a dry film to the surface of the metal layer, patterning the dry film, and using the patterned dry film as a mask to perform etching on the metal layer so as to obtain a metal circuit pattern; removing the dry film to obtain the flexible substrate and a flexible die of the metal circuit pattern from top to bottom. The production method has the advantages that the process is simple, die cost is low, and the requirement of the flexible printed circuit board industry for conductivity of the flexible printed circuit boards can be met when the production method is applied to the production of the flexible printed circuit boards. The flexible die is composed of the flexible substrate and the metal circuit pattern; the flexible substrate meets the requirement for uniformity of nanoimprinting on a large-area substrate; the metal circuit pattern is of high hardness, pattern deformation can be decreased during imprinting, and quality of the flexible printed circuit boards produced by nanoimprinting is improved.

The invention belongs to the technical field of conductive coatings, and discloses a graphene composite conductive coating as well as a preparation method and application thereof. The coating is composed of the following materials: 5-80% of resin, 0.1-5% of graphene, 2.5-20% of copper powder, 7.2-30% of silver powder, 0.55%-3.0% of a dispersant, 17-40% of an organic solvent, 0.3-1% of an anti-settling agent, 0.3-1% of a levelling agent and 0.1-1% of a cross-linking agent; and the preparation method comprises the following steps: adding the graphene into a slowly-drying solvent, adding the dispersant, performing stirring, and performing ultrasonication; adding the ultra-fine copper powder into a slowly-drying solvent, adding the dispersant, performing stirring, and performing ultrasonication; adding the ultra-fine silver powder into a slowly-drying solvent, adding the dispersant, performing stirring, and performing ultrasonication; and adding the dispersant into acrylate polyurethane, adding the treated solutions into the acrylate polyurethane in sequence, adding the organic solvent, the anti-settling agent, the levelling agent and the cross-linking agent, performing stirring, and performing grinding. The coating provided by the invention meets the requirements of conductive performance, avoids the single use of silver, reduces costs, and has a high price/performance ratio.

The invention discloses a method for preparing a compound conductive layer on the surface of epoxy resin. The silver-nickel compound conductive layer is formed on the surface of the epoxy resin by chemical silver plating and nickel electroplating. The method comprises the steps as follows: 1, carrying out chemical silver plating, wherein the chemical silver plating process comprises the following concrete sub-steps of removing stress, removing oil, roughening, neutralizing, reducing, sensitizing and chemically plating silver, and forming a conductive silver layer on the surface of the epoxy resin; and 2, carrying out nickel electroplating on the epoxy resin with the conductive silver layer to obtain the silver-nickel conductive layer on the surface of the epoxy resin at last. Compared with the conventional chemical plating, the used time of the compound conductive layer prepared by the method is greatly shortened and the obtained compound conductive layer has the characteristics of bright and flat surface and strong bonding force; in addition, the nickel has the advantages of corrosion resistance and good conductivity, and the epoxy resin as a basis material has the advantages of high mechanical property, good process property and excellent chemical drug resistance, so that the usability of the whole material is greatly enhanced.

The invention discloses an all-solid-state lithium-air battery composite positive electrode material and an all-solid-state lithium-air battery. The composite positive electrode material comprises a conductive carbon material, a micro-nano frame structure, a lithium-conducting polymer and a redox mediator, wherein the composite positive electrode material has the characteristics of good conductivity and high oxygen permeability; a discharge product can be oxidized in a positive electrode region; and the all-solid-state lithium-air battery with high circulation capability and high safety performance can be obtained on the basis of a positive plate prepared from the composite positive electrode material.

The invention belongs to the field of automobile instrument panels, and relates to a conductive treatment method for an inlet groove mould surface of a slush moulding mould. The conductive treatment method comprises the following steps: 1, cleaning the inlet groove mould surface by using a mixed solution of deionized water and washing powder; 2, rinsing the residual cleaning solution by spraying the deionized water through a spray gun; 3, wetting the inlet groove mould surface by using a mixed solution of isopropanol and a hydrophillic treatment agent HYDRO310; 4, rinsing the residual wetting solution by spraying the deionized water through the spray gun; 5, preparing a diaminesilver solution A and a reducing agent solution B; 6, silvering the inlet groove mould surface by using a double-head spray head; 7, cleaning the inlet groove mould surface by spraying the deionized water through the spray gun. In the conductive treatment method, a sensitization process is avoided, and in the preparation process of the diaminesilver solution, an alkaline solution is not used, and a silver mirror can be directly sprayed on the cleaned and wetted surface, so that the conductive treatment method is simple and low in cost; a formed silver layer is bright, dense, good in conductivity and unlikely to shed off, so that the requirement on conduction of the inlet groove mould surface of the large-sized slush moulding mould can be met.

The embodiment of the invention discloses a conductive polyethylene. The conductive polyethylene is mainly prepared from, by weight, 60-80 parts of polyethylene, 5-15 parts of an ethylene-propylene copolymer, 1-5 parts of graphene and 15-25 parts of conductive carbon black. After an inner liner prepared from the conductive polyethylene is used in a chemical raw material barrel, the chemical raw material is in direct contact with the inner liner and is not in direct contact with the sidewall of the chemical raw material barrel in the use process in order to avoid the direct pollution of the chemical raw material barrel, so the treatment cost of hazardous wastes is greatly reduced.

The invention discloses a static conducting internal wall paint which creatively uses a mixture of diatomite, palygorskite, conductive mica powder, nano-iron powder and talcum powder as the composite conductive filler. Therefore, the prepared paint has long-lasting conductivity, good stability and excellent paint comprehensive performance. An economical and environmentally-friendly solution is provided for the indoor antistatic problem of the building.

The invention provides a back focal plane imaging device combined with a low-temperature ultra-high vacuum scanning tunneling microscope. The device comprises a to-be-measured sample, an optical imaging assembly, an integrated support, an extra-cavity lens group of the scanning tunneling microscope and an optical detector. A metal electrically excites the surface of the to-be-measured sample to generate a surface plasmon, and the optical imaging assembly collects a large-angle optical signal of the radiation leakage formed in the propagation process of the surface plasmon and converts the large-angle optical signal into parallel optical signals for output. The extra-cavity lens group of the scanning tunneling microscope receives the parallel optical signals for convergence and/or imaging and then outputs the signal, and the optical detector performs spectral measurement and/or back focal plane imaging of the received optical signal. The device facilitates imaging of the feature of theback focal plane of the sample illumination and the measurement of associated spectrums in a low-temperature ultra-high vacuum environment.

The invention relates to a bis phosphonic acid functional organosilicon high temperature proton conductor and a preparation method thereof, the preparation method of the proton conductor is as follows: (1) hydroxyethylidene bis-phosphonic acid tetrasodium salt and tetrahydrofuran are added into a four-mouth flask, completely dissolved, then heated to 45-60 DEG C, and then slowly added dropwise with isocyanate propyl trimethoxy silane, after the reaction is completed, bis phosphonic acid trimethoxy silane can be obtained; (2) the bis phosphonic acid trimethoxy silane as a main hydrolysis precursor, amino propyl trimethoxy silane and tetraethoxysilane as auxiliary hydrolysis precursors, ethanol as a solvent, and a suitable amount of hydrochloric acid as a catalyst are stirred at room temperature to obtain a sol; (3) the sol is dried, demoulded, and soaked with hydrochloric acid for post-processing to obtain the bis phosphonic acid functional organosilicon high temperature proton conductor. The bis phosphonic acid functional organosilicon high temperature proton conductor prepared by the method has high conductivity, good hydrolysis stability and thermal stability.

The invention relates to a conductive thermoplastic resin composition as well as a preparation method and application thereof. The composition comprises the following components in parts by weight: 40-90 parts of polypropylene; 0.05 to 2 parts of a carbon nano tube; 10 to 30 parts of conductive carbon black; 2 to 20 parts of a cycloolefin copolymer; and 0.5 to 2 parts of an ethyoxyl amide compound. The composition is high in resistance retention rate, high in tensile strength and small in carbon black shedding amount after being subjected to stretching processing.

The invention provides a cast aluminum alloy for a high-voltage power control assembly and a preparation method of the cast aluminum alloy. The cast aluminum alloy contains Si, B, Mg, La and the balance of Al and inevitable impurities. The dosage of the Si element is controlled, so that the requirements of the high-voltage power control assembly on the electrical conductivity can be met while the mechanical properties are improved. Secondly, the B element is added to react with the impurity elements capable of reducing the electrical conductivity in the alloy, and then the distortion of the internal crystal lattices of an aluminum conductor can be reduced, and furthermore, the crystal lattice defects can be reduced and the electrical conductivity can be improved. In addition, the rare earth element La is added to achieve certain effects of removing hydrogen, refining, purifying and altering, and therefore, the electrical conductivity of the aluminum alloy can be improved. The results of experiments indicate that the prepared cast aluminum alloy under a cast condition has the electrical conductivity of greater than or equal to 55% IACS, the tensile strength of 189-194MPa and the yield strength of 128-136Mpa, and has excellent electrical conductivity and mechanical properties.

The invention belongs to the technical field of enamelled wires and particularly relates to a multi-layer coated enamelled wire. The multi-layer coated enamelled wire comprises a core wire as a conductor and a protective layer positioned out of the core wire, wherein the protective layer comprises inner insulating layers and an outer coating; the core wire is a poly-metal compound conductor which is composed of an aluminum core and a copper layer wrapped on the outer surface of the aluminum core; multiple insulating layers sequentially comprise a polyester layer, a polyamideimide layer, a polyurethane layer and a polyesterimide layer from inside to outside. The multi-layer coated enamelled wire provided by the invention is relatively high in corona resistance and long in anti-pulse service life, and the service life of a motor is prolonged, so that the demand on the conductive performance of an electrical apparatus element is satisfied; the metal wire core is good in flexibility, malleability and tensile property, the integral heat resistance, the insulativity, the mechanical property and the chemical resistance of an enamelled film are improved, and moreover, the multi-layer coated enamelled wire is good in straight welding performance; when the enamelled wire is welded, the film layer is not removed; the dielectric loss tangent at high frequency is relatively small, the application range is wide, and the multi-layer coated enamelled wire is suitable for being popularized and implemented.