31results about How to "Guaranteed insulation properties" patented technology

The present invention discloses a high voltage ceramic and glass insulator with the function of resisting pollution flashover and its preparation method. Said method includes the following processes: firstly, preparing titanium dioxide base sol, adding surfactant into the sol, then applying the titanium dioxide sol containing the above-mentioned surfactant or containing no surfactant on the surface of high-voltage ceramic and glass insulator, low-temperature heat treatment to make the titanium dioxide sol be solidified on the insulator surface so as to form a layer of nano inorganic film capable of raising pollution flashover resisting function of genral ceramic insulator.

The invention provides an electromagnetic relay excellent in insulating property and high in opening and closing characteristics and productivity. Therefore, a pair of pedestal portions for coil terminals are arranged in the outer circumferential edge portion of the lower flange portion of a spool. A coil drawing-out groove continuously connected to the upper face of the above pedestal portion for a coil terminal is formed along the outer circumferential edge portion of the above lower flange portion. A storing concave portion able to store a shading coil attached to a magnetic pole portion of an iron core projected from a central hole of the above spool is formed on the lower face of the above lower flange portion.

The invention relates to a power semiconductor module packaging structure and a packaging method thereof. A resin or other curable material is injected into a gap of a specially processed metal circuit layer and then solidification is carried out; the metal circuit layer and a heat-conducting insulating resin film are pressed on a metal bottom plate; and bubbles in the gap of the metal circuit layer and in the heat-conducting insulating resin film are removed and solidified by using the solidified material, so that the insulation property is ensured. Or bubbles in the heat-conducting insulating resin film are removed and solidified by using the solidification process of the plastic-packaging resin in the plastic-packaging process, so that the insulation property is ensured. Therefore, themetal circuit layer with the small gap and the large thickness can be formed on the heat-conducting insulating resin film even when a Pinfin metal bottom plate, a metal bottom plate with one side being a non-plane surface, or a metal bottom plate with a water-cooled flow path inside. The module based on the structure has advantages of low thermal resistance, small deformation and high reliability.

The invention discloses an ultra-low power consumption ferroelectric transistor memory based on a two-dimensional organic functional material and a preparation method thereof. An aluminum oxide insulating layer is grown on a substrate by an atomic beam deposition method, and then an antisolvent is used to An ultrathin crystalline ferroelectric polymer film was prepared at room temperature by assisted crystallization, and then an ultrathin layer of polymethyl methacrylate and an ultrathin layer of dioctyl Dioctylbenzothiophene benzothiophene, and finally a gold film was transferred onto the dioctylbenzothiophene benzothiophene layer as source and drain electrodes using a non-invasive gold film transfer process. The present invention uses the quasi-two-dimensional ferroelectric polymer crystalline film as the dielectric layer and the two-dimensional organic molecular crystal C 8 ‑BTBT material is used as a semiconductor layer to prepare fast transistor memory, which can greatly reduce the power consumption of ferroelectric organic field effect transistor memory, and has low-voltage operation capability and fast storage capability.

An apparatus for manufacturing polysilicon using a chemical vapor deposition (CVD) reactor is provided. The apparatus for manufacturing polysilicon includes: a reaction chamber including a substrate and a reactor cover; at least a pair of electrodes installed through the substrate by an insulating member and connected with a power supply; at least a pair of filaments which are coupled with the pair of electrodes by an electrode chuck and of which upper ends are connected to each other; and a cover assembly including an electrode cover surrounding an upper surface and a side of each of the pair of electrodes on the substrate and a cover shield covering the upper surface of the electrode cover.

The invention relates to a motor manufacturing method and a motor. The motor comprises a cylindrical stator core and a coil. The stator core is internally provided with a containing cavity. The motormanufacturing method comprises the following steps of placing the coil in the containing cavity so as to enable the coil to form a containing part contained in the containing cavity and an extending part configured to extend out of the containing cavity from the two sides of the stator iron core in the axial direction of the stator iron core; and an extending part pouring and sealing die arrangedon the outer side of the extending part in a sleeved mode and provided with an inner cavity. A containing part pouring and sealing die provided with an inner cavity is arranged in the containing cavity in a sleeved mode. The containing part is contained in the containing part pouring and sealing die. The pouring and sealing fluid is poured into the interior of the containing part pouring and sealing die and the interior of the extending part pouring and sealing die. When the pouring and sealing fluid is solidified, the containing part pouring and sealing die and the extending part pouring andsealing die are disassembled. The motor manufactured by the method is relatively high in reliability.

The invention belongs to the technical field of special methods for cooling electric equipment, and specifically discloses a method for cooling a server through oil. The method comprises the followingsteps: (1) a cabinet and an oil circulation device are prepared, and oil raw materials, including insulating mineral oil and 2,6-di-tert-butyl-p-cresol, are prepared, wherein the carbon atoms on thealkyl side chain in the insulating ore oil account for 42-50% of the total molecular carbon number; (2) the oil raw materials prepared in step (1) are mixed to form oil; (3) a server is put in the cabinet, and the oil is put in the oil circulation device; and (4) the oil circulation device is started to make the oil enter the cabinet and go over the server, the oil absorbing heat is sucked by theoil circulation device and cooled and then enter the cabinet again, and the temperature of the cooled oil is between -10 DEG C and 20 DEG C. The invention aims to solve the problems in the prior art:the air flow carries and blows impurities into the server to cause dust accumulation during heat dissipation based on cold and hot air exchange, and the low thermal conductivity of air results in lowheat dissipation efficiency of the server.

The invention relates to a sealing structure for a medium-high temperature battery, a medium-high temperature battery and an assembly method thereof. The sealing structure includes a metal piece for drawing current, and a closed cavity is provided inside the battery at the assembly gap where the metal piece is assembled on the battery to seal the assembly gap, and the metal piece passes through the closed cavity, and the closed cavity There are one layer, two layers, three layers or more than three layers of salt layers for liquid sealing inside, and the melting points of each salt layer decrease sequentially from the inner side of the battery to the outer side. The sealing structure of the present invention has excellent air-tightness and anti-corrosion performance, which guarantees the service life of the medium-high temperature battery when it works at 150-700°C, and also has insulation properties, which greatly reduces the mechanical strength under the condition of ensuring the mechanical strength. The volume occupied by the battery seal is reduced, saving space.

The invention belongs to the technical field of a special method for cooling electrical equipment, and specifically discloses a server cooling method. The server cooling method specifically comprisesthe following steps of 1, preparing hydrocarbon-based mineral oil, wherein the number of carbon atoms in the molecules of the hydrocarbon-based mineral oil is 17-23, and the molecular weight is 250-300, and preparing a sealed machine cabinet and an oil circulation apparatus; 2, placing a server into the machine cabinet; 3, pumping the hydrocarbon-based mineral oil into the machine cabinet until the server is immersed below the liquid surface, and performing sealing on the machine cabinet; 4, extracting high-temperature oil from the machine cabinet through the oil circulation apparatus, then cooling the oil circulation apparatus, and maintaining the cooled oil temperature to be 0-20 DEG C; and 5, pumping the cooled oil to the machine cabinet. By adoption of the server cooling method, the problem of unobvious server cooling caused by low air heat conducting coefficient in cooling through a cold and hot air exchanging mode, and the problem that the carried dust blows into the server whenthe cold air blows the server in the prior art can be solved.