7results about How to "Avoid high temperature oxidation" patented technology

The application discloses a kind of low altitude flight sensing radar equipment chip level high temperature dynamic aging test unit, it is related to chip aging equipment technical field, including the heating carrier for bearing low altitude flight sensing radar equipment chip and the closed cavity for providing closed test environment, heating carrier is connected with closed cavity by pull-out type structure cooperation, realize independent development aging test or multiple integrated combination use;Heating carrier includes metal elastic needle, PCB board, heating module, metal heat sink, sheet metal shell, guide rail clamping groove and multi-core plug terminal, closed cavity includes cavity shell, guide rail, heat dissipation fan, gas valve and drawer locking mechanism.Can overcome the defects that existing equipment cannot unit temperature control, poor adaptability, unstable test environment, realize equipment structure simplification and miniaturization, achieve each test unit independently controlled temperature, gas environment and other parameters, while improving test operation convenience and result accuracy, reduce test cost.

The utility model discloses a novel bend -resistant polyester type halogen -free environmental protection explosion -proof shielding control cable, including cable installation layer, the outside installation of cable installation layer has cable protection composite layer, the cable protection composite layer includes elastomer sheath, the inside installation of elastomer sheath has multipoint position bending monitoring subassembly, and the multipoint position bending monitoring subassembly is by elastic electricity -making band and a plurality of bending monitoring units, and the elastic electricity -making band includes elastic protection zone, and the inboard of elastic protection zone is installed with a plurality of electricity -making silk, and the bending monitoring unit includes installation box, and the inboard fixed mounting of installation box has electricity -making seat, and the upper end surface fixed mounting of electricity -making seat has pressure -sensitive resistance, and the upper end surface installation of pressure -sensitive resistance has the elastic support plate. The utility model discloses through to the cable and carries out the layering cladding, can effectively improve the bending -resistant and stability of cable, can determine the bending position and bending degree simultaneously.

The invention discloses a preparation method for coating one side of glass fabric with polytetrafluoroethylene by a vertical gluing machine, and belongs to the field of manufacturing of bonding sheets in copper-clad lamins.The preparation method comprises the steps that firstly, the glass fabric is installed on a rolling device, and tension is adjusted through a fabric storage mechanism; then, a vertical three-roller precise transfer coating system is used for quantitatively coating the PTFE slurry with the controlled viscosity in a constant-temperature glue storage tank on the cloth surface in a single face mode, and the non-coating face is synchronously gelatinized; the coated cloth enters a six-section type vertical drying oven to be subjected to stepped curing, pre-drying, high-temperature melting, crystallization curing and gradient cooling are conducted in sequence, the temperature of the high-temperature section reaches 380-385 DEG C, and a double-layer air curtain is arranged on the non-coated side for isolation; and finally, cooling to 50-80 DEG C, and rolling. The tension is controlled within the range of 5-15 N / cm through a sectional type vertical tension control system in the whole process. According to the method, single-face accurate coating is achieved, the problems of slurry waste, poor uniformity, many defects, unstable size and the like of a traditional horizontal process are solved, and the product performance is excellent.

The application provides a metallized polymer film and a preparation method thereof, which comprises the following steps: S10: providing a polymer base film; S20: spraying a metal powder to the surface of the polymer base film by an atmospheric plasma torch to form a metal coating on the surface of the polymer base film, so as to obtain the metallized polymer film. By using the atmospheric plasma torch and controlling the spraying conditions, the application realizes the control of the high-speed plasma jet energy, and then the momentum and heat input to the surface of the polymer base film, so that the metal coating is deposited on the surface of the polymer base film without damaging the polymer base film, thereby obtaining the metallized polymer film with the stable and firm combination of the metal coating and the polymer base film.

The application provides a Sn-In-Ga ternary doped copper powder, a preparation method thereof and a TOPCon photovoltaic copper paste. The Sn-In-Ga ternary doped copper powder comprises copper powder, tin, indium and gallium, the tin, the indium and the gallium are attached to the surface of the copper powder, and the atomic molar ratio of each element in the Sn-In-Ga ternary doped copper powder is Cu:Sn:In:Ga=(98.0-99.2):(0.2-0.8):(0.2-0.8):(0.2-0.8). The Sn-In-Ga ternary doped copper powder can have good conductivity, oxidation resistance and interface compatibility.

This invention relates to an ultra-low temperature ceramic binder, which is mainly composed of the following raw materials in the indicated mass percentages: Bi₂O₃: 40-80%, B₂O₃: 5-15%, ZnO: 10-35%, SiO₂: 0-5%, Li₂O: 0.5-3%, TiO₂: 0-5%, CaF₂: 2-10%, Y₂O₃: 0-5%. This binder can be fired at a minimum temperature of 400°C and softened at a minimum temperature of 320°C. It enables the ceramic binder to achieve bonding and consolidation before the polymeric pore-forming agent and temporary polymeric binder burn off, maintaining the integrity of the pore structure while achieving a high porosity. Furthermore, using this ceramic binder and a preferred polymeric pore-forming material, it is possible to construct spherical pores with interconnected microscopic gaps, and the pore size can be controlled during preparation.