41results about How to "Meet conductivity" patented technology

The present invention provides a metal material with a non-chromate surface treatment, which can satisfy the corrosion resistance, heat resistance, fingerprint resistance, electrical conductivity, paintability and processing requirements that were difficult to achieve with the conventional non-chromate technology. Anti-blackening and other properties. The non-chromate surface-treated metal material of the present invention forms a composite film containing various components by applying and drying a water-based metal surface treatment agent on the surface of the metal material. The water-based metal surface treatment agent contains one The organic silane coupling agent (A) of amino group and the silane coupling agent (B) containing 1 glycidyl group in the molecule are mixed according to the ratio of solid content mass ratio [(A) / (B)] of 0.5 to 1.7. A silicon compound (W), at least one fluorine compound (X) selected from titanium hydrofluoride or zirconium hydrofluoride, phosphoric acid (Y) and a vanadium compound (Z).

Provided is a copper alloy with an FCC structure, said copper alloy containing 3.0 to 29.5 mass% of Ni, 0.5 to 7.0 mass% of Al, and 0.1 to 1.5 mass% of Si, with the remainder comprising Cu and unavoidable impurities. By precipitating, at an average particle size of not more than 100 nm, an Si-containing L12-structured Gamma' phase in the parent phase of the copper alloy, the copper alloy is provided with excellent processability even at high temperatures, and is highly conductive. Furthermore, these characteristics can be controlled.

The invention relates to the technical field of a span adjustable grounding wire head clamp device. The device is characterized in that an upper retaining ring, a concave pillar and a lower retaining ring and a wire hanging plate thereof are connected by screws; and an adjustable retaining hole and a ground wire hanging groove are also arranged at the bottom of the lower retaining ring and the wire hanging plate thereof. The device has the following beneficial effects that the problem of installation of grounding wires of overhead single conductors with current-carrying capacities being above 879A and wire diameter areas being above 400mm<2> and overhead composite conductors with current-carrying capacities being above 1620A and wire diameter areas being above 400mm<2>*2 and the problem that the grounding wires are difficult to install in the places needing installation of the grounding wires due to various reasons are solved; and the device meets the requirements of electrical conductivity and heat resistance, has simple structure and can not only appropriately adjust the span to meet the installation requirement according to the overhead wire diameters on the site but also be suitable for various grounding wire conductor terminal joints.

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 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.

Embodiments of the present invention provide a method for manufacturing a package structure and a package structure, which relate to the technical field of packaging. The manufacturing method of the package structure includes providing a chip and a heat dissipation cover; wherein, the chip is provided with a circuit pad, and the heat dissipation cover is provided with a ground terminal and a mounting groove. Set the chip in the mounting groove; plastic-encapsulate the chip and the heat dissipation cover, and expose the circuit pad and the ground terminal; lead the RDL circuit from the circuit pad and the ground terminal; fill the RDL circuit with a dielectric layer, and form on the dielectric layer A ground pad and a ball-mounting pad; wherein, the ground pad is connected to the ground terminal, and the ball-mounting pad is connected to the circuit pad. Since the RDL line is directly drawn from the ground terminal and the line pad, that is, the heat dissipation cover is directly connected to the RDL line, it is beneficial to reduce the grounding resistance and prolong the service life of the package structure.

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.