35results about How to "Strong breakdown resistance" patented technology

The invention relates to a high-strength light fabric used in fencing clothes, which is characterized by comprising terylene and polypropylene fibers, wherein the terylene consists of lustrous terylene and matt terylene. A processing method for the high-strength light fabric used in fencing clothes comprises the steps of wiredrawing, twisting, weaving, printing and dyeing, and is characterized in that the fabric is woven in honeycomb weaves. After being developed and produced, the fabric has the advantages that the breakdown resistance of the fabric is strong because of adopting the terylene and polypropylene fibers as main raw materials, for example, the fabric with 800N has the limit breakdown of over 3000N; the fabric is light as adopting the honeycomb weave, as the fabric with 800N has the unit weight of 630g/m<2>, and the fabric with 350N has the unit weight of 400g/m<2> (with the limit breakdown of 2978N). One finished jacket after being woven is lighter 500g than a conventional jacket; furthermore, the softness and the textile of products are much better than those of conventional products.

The invention discloses an inorganic solid electrolyte-cellulose composite diaphragm and a preparation method thereof. The preparation method comprises the steps of S10, adding cellulose raw materialsinto deionized water to be immersed, and then performing grinding in a pulping machine to obtain a cellulose pulp solution with a micro-fiber structure; S20, adding an inorganic solid electrolyte into deionized water to prepare into a suspension liquid, then adding a wet strength agent and the cellulose pulp solution to be mixed uniformly; S30, performing papermaking and film forming on the cellulose pulp solution comprising the solid electrolyte by a papermaking process, namely, obtaining a wet cellulose electrolyte composite diaphragm; and S40, performing drying on the wet composite diaphragm in a drying oven to obtain the needed cellulose-solid electrolyte composite diaphragm. The prepared composite diaphragm is uniform in hole structural distribution, convenient to prepare, suitable for batch production, and high in heat resistance, high in wettability, high in ionic conductivity, high in breakdown resistance, and suitable for a lithium ion battery diaphragm; and meanwhile, the diaphragm is compounded with the inorganic solid electrolyte, so that an effect of the electrolyte can be played, and extra addition of an electrolyte solution is not needed.

The invention discloses a shield conversion lead of a parallel composite strip, comprising two groups of copper flat wires. An inner insulation paper layer is coated out of the single group of copper flat wires; two groups of copper flat wires are axially arranged in parallel; a shield wire is arranged between two groups of copper flat wires; and an outer insulation paper layer is coated outside the two groups of copper flat wires and the shield wire. In the invention, a group of enameled flat wires is adopted to replace the shield wire and directly clamped between two conversion leads to be integrated together with the outer insulation paper, thereby ensuring larger sectional area of the leads, increased the voltage capacity, better insulation effect and stronger puncture-resisting ability; besides, shield wires are arranged in the lead, thereby greatly reducing the difficulty degree in the coil winding process, simplifying the process and ensuring good effect of the shield wire.

The invention discloses a high-stability corrosion-resistant long-life communication transformer and a manufacturing method thereof. The communication transformer comprises a framework, a winding, a magnetic core, a shielding cover and a packing material, and is characterized in that the framework is an alumina-based porous foam ceramic framework with a porosity of 20-30%; the winding adopts a purple copper wire with epoxy polyester insulating paint; the magnetic core is a molybdenum pomo magnetic core which is shaped like a Chinese character 'ri'; a self-circulation insulating heat transfer filler is filled in gaps between the shielding cover and other parts, and the self-circulation insulating heat transfer filler is a mixture of alumina-based porous foam ceramic and rosin; the shieldingcover is made of titanium-containing low-carbon steel with activated and passivated surface and is packaged in a totally-enclosed structure. The communication transformer has the advantages of smallloss, high conversion efficiency, good electromagnetic shielding property, good insulation property, corrosion resistance, oxidation resistance and long service life.

Present invention discloses a drum type air handling assembly. It includes cylinder shape horizontal shell, round multi-leaf damper, fan-shaped or tube type primary filter, round surface heater, primary filter surface air coolers, humidifier, circular arc shape service door, and condensate pipe. Said invention has reasonable structure and fine working performance.

The invention discloses an antiferroelectric material and a preparation method thereof, and a capacitor containing the antiferroelectric material. The antiferroelectric material includes an antiferroelectric body represented by a general formula (Pb<0.94>La<0.04>)(Zr<1-x-y>Sn<x>Ti<y>)O<3>, where x is greater than or equal to 0.3 and smaller than or equal to 0.5, and y is greater than or equal to 0.3 and smaller than or equal to 0.1. The antiferroelectric material can be used for manufacturing the energy storage capacitor. According to the lead lanthanum zirconate titanate stannate antiferroelectric thick-film capacitor prepared by a tape casting method disclosed by the invention, the ultrahigh energy storage efficiency of 90-95% can be achieved, and the capacitor also has relatively strongbreakdown resistance and high energy storage density, so a solid foundation is laid for researching and developing a dielectric energy storage capacitor with excellent energy storage performance; andthe capacitor has a very good application value.

The invention relates to a vacuum arc extinguishing chamber ceramic shell component and a process for manufacturing the same, wherein the ceramic shell component comprises a ceramic shell and a shielding barrel; the inner wall of the ceramic shell is provided with a stiffener rib on which the shielding barrel is fixed; the edge of an upper opening of the shielding barrel is tightly pressed on the stiffener rib in a form of flanging structure, and the shape of the outer side surface of the upper opening part of the shielding barrel had better adapt to the stiffener rib. When the invention is manufactured, the shielding barrel is arranged in the ceramic shell, and the height of the edge of the upper opening of the shielding barrel is over the height of the stiffener rib of the ceramic shell; the shielding barrel is moved upward, so that the upper opening part of the shielding barrel correspondingly contact the lower part of the stiffener rib; the upper opening of the shielding barrel is forced to tightly press on the stiffener rib in the form of flanging structure. The ceramic component has the advantages of thoroughly avoiding the problem of the falling off of the shielding barrel, along with simple structure and reliable performance, and thoroughly avoids the problem of the dropout of the shielding barrel, and simple manufacturing process, convenient operation, low production cost, high production efficiency and production qualification rate and no environmental pollution due to the adoption of a tightly clamping and pressing structure instead of a welding structure.

The invention discloses a high-stability high-reliability self-circulating three-winding autotransformer and a manufacturing method thereof. The three-winding autotransformer comprises a framework, windings, a magnetic core, a shielding cover and a packaging material and is characterized in that the framework is an alumina-based porous foamed ceramic framework with the porosity of 20-30%; the windings adopt red copper wires with 1140 epoxy polyester insulating varnish; the magnetic core is a B-shaped silicon steel sheet magnetic core; gaps between the shielding cover and other parts are filledwith self-circulating insulating heat transfer filler, and the self-circulating insulating heat transfer filler is a mixture of alumina-based porous foamed ceramic, non-vulcanized silica gel and gumrosin; the shielding cover is made of aluminum alloy and packaged by a full-closed structure. The autotransformer has the advantages of small loss, high conversion efficiency, good electromagnetic shielding performance, good insulation, high cost performance and long service life.

The invention discloses a surface-discharge ceramic substrate applied to an optical pumping source. The surface-discharge ceramic substrate comprises a ceramic body and a diamond ablation-resistant coating deposited on the ceramic body, wherein the diamond ablation-resistant coating is deposited in only a region where surface discharge is generated on the surface of the ceramic body. The manufacturing method of the surface-discharge ceramic substrate comprises the following steps: preparing turbid liquid containing diamond powder; pretreating the ceramic body by using a hydrofluoric acid solution and then planting seed crystals for the ceramic body by using the turbid liquid; shielding the region, where no surface discharge is generated, of the ceramic body; depositing the diamond ablation-resistant coating on the surface of the ceramic body by means of hot filament chemical vapor deposition to obtain the surface-discharge ceramic substrate. The surface-discharge ceramic substrate disclosed by the invention is good in plasma ablation resistance, high in reutilization frequency and low in cost.

The invention relates to a method for manufacturing a gate oxide layer on a silicon carbide material. The method comprises the steps: depositing silicon dioxide with a thickness of 50-70 nm on a surface of silicon carbide in a low-pressure environment through a method of thermal decomposition of tetraethyl orthosilicate; carrying out first high-temperature annealing on a silicon carbide substrateon which a main body oxide layer is formed in an oxygen environment; then carrying out secondary high-temperature annealing on the oxide layer in a nitrogen atmosphere; and finally, carrying out thirdhigh-temperature treatment on the silicon carbide substrate on which the oxide layer is formed in argon. According to the manufacturing method of the gate oxide layer on the silicon carbide material,the gate oxide layer is more compact, fixed oxide layer charges and interface trapped charges formed in an oxidation process are removed, an interface state of the gate oxide layer is reduced, and performance of the gate oxide layer is improved.

The invention belongs to the electrical field, and relates to a cable with a thermoplastic insulating layer. The cable comprises at least one conductor and at least one electric insulation layer surrounding the conductor, wherein the electrical insulation layer is made of at least one aromatic olefin grafted modified polypropylene material; the aromatic olefin grafted modified polypropylene material comprises a structural unit derived from co-polypropylene and a structural unit derived from a styrene monomer, based on the weight of the aromatic olefin grafted modified polypropylene material, the content of a structural unit which is derived from a styrene monomer and is in a grafted state in the aromatic olefin grafted modified polypropylene material is 0.5-14wt%. The cable provided by the invention has higher working temperature, and has the advantages of thinner electrical insulation layer thickness, better heat dissipation and lighter weight under the condition of ensuring the same voltage class and insulation level.

The invention discloses a method for improving a breakdown-resistant ability of a ferroelectric film. The method for improving the breakdown-resistant ability of the ferroelectric film comprises the steps of using a metallic aluminum sheet as an electrode of the ferroelectric film or using an other material having a surface thereof coated with a layer of an aluminum film as the electrode of the ferroelectric film, carrying out preprocessing for the electrode of the ferroelectric film and then growing the ferroelectric film on the pre-processed electrode; and carrying out preprocessing for the electrode of the ferroelectric film under gas protection and at 300-480 DEG C. According to the method for improving the breakdown-resistant ability of the ferroelectric film, an idea of improving the breakdown-resistant ability of the ferroelectric film through selection of the electrode is firstly proposed, and the feasible electrode is provided. The obtained ferroelectric film has very strong breakdown-resistant ability, the leakage current is very low, the true ferroelectric performance of the film can be detected, and the method for improving the breakdown-resistant ability of the ferroelectric film has good prospect in preparation process and device application of the ferroelectric film in future.

The invention belongs to the electrical field, and relates to a high-performance polypropylene cable. The cable comprises at least one conductor and at least one electric insulation layer surrounding the conductor; wherein the electrical insulation layer is made of at least one polypropylene graft containing anhydride groups; the polypropylene graft containing the anhydride group comprises a structural unit derived from co-polypropylene, a structural unit derived from an anhydride monomer and a structural unit derived from an alkenyl-containing polymeric monomer. The cable provided by the invention has higher working temperature, and has the advantages of thinner electrical insulation layer thickness, better heat dissipation and lighter weight under the condition of ensuring the same voltage class and insulation level.