9results about How to "Strong binding strength" patented technology

The invention discloses a method for preparing a graded porous nickel electrode by step-by-step dealloying and application thereof, and the method comprises the following steps: spraying a nickel-aluminum material on a nickel-based substrate to obtain a first intermediate product; performing heat treatment on the first intermediate product to obtain a second intermediate product; the second intermediate product is sequentially placed in alkali liquor with different concentrations for step-by-step activation, and the graded porous nickel electrode is obtained; in the step of step-by-step activation, the concentration of the alkali liquor is gradually reduced, and the activation temperature is gradually reduced. According to the graded porous nickel electrode, the efficient mass transfer rate and catalytic efficiency are guaranteed; the bonding strength between the coating and the substrate is high, the interlayer structure is stable, the mechanical property and stability are good, and the service life is long; and the hierarchical porous structure can be constructed only through step-by-step activation, so that the preparation process is remarkably simplified.

The invention relates to the technical field of steel plate packing, and discloses an automatic color steel plate packing device which comprises a conveying mechanism, a color steel plate body is placed on the top of the conveying mechanism, a winding roller is fixedly connected to the back face of the conveying mechanism, a packing belt is wound around the outer side of the winding roller, and a bundling assembly is arranged in the middle of the conveying mechanism. The conveying mechanism conveys a to-be-bundled position of a color steel plate body to the inner side of the bundling assembly, and the bundling assembly drives a packing belt to be spirally wound on the outer side of the color steel plate body by multiple circles; by arranging the bundling assembly, the outer side of the color steel plate body is bundled by multiple circles through the packing belt, the bundling strength is enhanced, and the color steel plate body is prevented from being collided, cut off and bundled in the transportation process.

The invention provides a high-quality TC4 titanium alloy wire and a preparation method thereof, and relates to the technical field of biomedical metal materials, and the preparation method comprises the following steps: preparing materials according to TC4 titanium alloy components, carrying out vacuum consumable smelting, obtaining a titanium ingot blank, carrying out cogging forging, carrying out continuous rolling, heating a TC4 black skin wire to a titanium alloy beta single-phase region temperature, and carrying out high-temperature rounding, then heating the wire material subjected to high-temperature rounding to the titanium alloy alpha + beta two-phase region temperature and carrying out high-temperature rounding again; and finally, peeling and drawing at high temperature. Through a cross-phase region high-temperature rounding process, deformation is carried out in a beta region by utilizing a coupling effect among temperature, tissue and deformation, and strain energy is gathered at a grain boundary; along with the temperature drop after discharging and the temperature drop in the deformation process, the material enters an alpha + beta two-phase region, an alpha phase is preferentially separated out at and near a beta grain boundary containing a large amount of distortion energy and is crushed and spheroidized in the deformation process, and meanwhile, a twisted sheet-shaped alpha phase is formed in the crystal. And the crystal boundary spheroidized alpha phase is uniform and fine, so that the tensile strength of the material is improved.

This invention relates to a method for preparing spatially selectively modified porous carbon, comprising the following steps: (S1) a sulfonate-based aromatic azo dye is dissolved in a mixed solvent of water and a polar aprotic organic solvent, and a soluble lithium source is added to carry out an ion exchange reaction to obtain a lithium-ionized dye; (S2) the lithium-ionized dye is dissolved in a mixed solvent of water and a polar aprotic organic solvent to form a solution, and porous carbon is added for impregnation treatment, controlling the impregnation conditions to ensure that the loading of the lithium-ionized dye is 2-4 wt%, thereby obtaining composite porous carbon; (S3) the composite porous carbon is heat-treated under an inert atmosphere to obtain spatially selectively modified porous carbon. This invention, by introducing a lithium-ionized dye, constructs a nitrogen / sulfur / lithium co-modified functional interface layer in situ on the outer layer and main pore region of porous carbon, achieving active control of the key interfaces of the silicon-carbon anode, significantly improving its cycle stability and interface reliability.

The utility model relates to fan production technical field, especially a fan structure of three -phase motor. It includes base, axle, magnetic frame, ball bearing, stator, PCB board, impeller, axle is pressed in on the base, the impeller rotatable connection is established on the axle through ball bearing, the magnetic frame is connected on the impeller, the stator is connected on the base, the magnetic frame is located at the periphery of stator and mutually interval, the PCB board is connected on the base, the stator is equipped with pin foot, and the pin foot is consolidated after passing through the PCB board and is combined with the PCB board. The stator adopts the mode of metal pin foot insertion in the insulating frame, can be through the machine automatic division enameled wire mode and wind, saves manpower, can realize production automation, the iron shell and impeller press fit as a whole in the assembly structure, the axle and base are pressed together, compared with the mode that the axle and metal shell are combined, the axle and base combination length are longer, the concentricity and perpendicularity are high, the combination strength is strong, and the stability is good.

The invention provides a diaphragm, a preparation method thereof and a battery, and belongs to the technical field of batteries. The separator includes: a base film; the first functional layer is arranged on at least one side of the base film; the second functional layer is arranged on one side, deviating from the base film, of the first functional layer; wherein each of the first functional layer and the second functional layer comprises whisker-shaped ceramic and sheet-shaped ceramic, the mass ratio of the whisker-shaped ceramic to the sheet-shaped ceramic in the first functional layer is M, the mass ratio of the whisker-shaped ceramic to the sheet-shaped ceramic in the second functional layer is N, and M is greater than N. The mechanical strength of the first functional layer is higher due to the whisker-shaped ceramic in a large proportion, the electrolyte storage capacity and the electrolyte infiltration capacity of the first functional layer are matched due to the sheet-shaped ceramic in a small proportion, and meanwhile a heat conduction network is rich; and the porosity of the second functional layer is relatively large due to the whisker-shaped ceramic with a low proportion, and meanwhile, the capacity of the electrolyte is relatively strong due to the sheet-shaped ceramic with a high proportion, so that the diaphragm with excellent structure and performance is finally formed.

The invention provides a selective metallization resin composition capable of being activated by laser. The selective metallization resin composition consists of the following components in percentage by weight: 1-45% of tin salt and 55-99% of polymer. The invention also provides a preparation method and application of the resin composition. The tin salt shows excellent laser activation capacity under the action of laser with the wavelength range of 190-1064nm, the prepared resin capable of being selectively metallized through laser activation is light in color and good in chemical plating effect after activation, and under the condition that the addition amount is as low as 1wt%, the thickness of a plating layer of an obtained resin composition reaches 2 microns or above, and the thickness of the plating layer is more than 2 microns. And according to the test of a cross-cut knife (ASTM D3359), the strength of the coating reaches the highest 5B level, and the application prospect is very wide.

According to the anti-sticking coating for sintering, TiN or TiC serves as an anti-sticking and blocking material, MgO serves as a shell forming agent, MgO and a TiO2 oxide film formed on the surface of the TiN or TiC form a magnesium titanate (MgTiO3) ceramic phase through a solid-solid diffusion reaction, the magnesium titanate ceramic phase is connected with coarse TiN or TiC particles after high-temperature sintering, and the anti-sticking coating for sintering is obtained. A relatively hard TiN or TiC shell is formed, so that the friction resistance and scratch resistance of the coating are improved, and the service life of the coating is prolonged. According to the sintering tray coated with the anti-sticking coating for sintering, the surface of the coating is free of peeling, cracking and other defects after sintering, the coating is completely reserved, the good and stable barrier effect is achieved, and the problems that impurities are likely to be introduced into an existing sintering anti-sticking coating, the sintering anti-sticking coating reacts with sintered alloy at the high temperature, and the performance of a sinter is deteriorated are solved.

The utility model discloses a novel instrument board glove box assembly structure, including storage box outer plate, storage box inner plate, interlayer storage box, interlayer storage box mounting plate, A type buckle, hidden type hook assembly, USB charging port and magnetic attraction connecting structure. Storage box outer plate and storage box inner plate are connected through positioning column and strong magnetic adsorption and are formed the detachable combination, and interlayer storage box is fixed on the inner plate through mounting plate and buckle, and hidden type hook assembly is composed of hook body, rotating shaft, hook mounting plate and limiting structure, and can rotate between the closing and opening position. USB charging port sets up at the lower part of outer plate, adopts the clamping type double interface structure. The glove box structure is half closed half open type layout, and the level is distinct, and is convenient to dismount, and is various in storage, and appearance is simple, is applicable to the installation of multiple vehicle type instrument board area.