10results about How to "High industrial value" patented technology

Provided in the present invention are an insulated gate bipolar transistor with a super junction structure, and a preparation method therefor. The transistor comprises a drift region of a first conduction type, an epitaxial layer, a plurality of trenches arranged at intervals, filling layers of a second conduction type, gate electrode structures, a body region, a body contact region, a source region, an isolation dielectric layer and a source electrode conductive layer, wherein the epitaxial layer is located on an upper surface of the drift region; the filling layers and the gate electrode structures are sequentially arranged in the trenches from bottom to top; each gate electrode structure comprises a gate conductive layer, and a gate dielectric layer, which is located on inner walls of the trench and an upper surface of the filling layer and wrap side walls and a bottom face of the gate conductive layer; the body contact region and the source region are located on an upper surface layer of the body region and are adjacent to an upper surface of the body region; the isolation dielectric layer is provided with a contact hole, which penetrates the isolation dielectric layer and exposes the source region and the body contact region; and the source electrode conductive layer fills the contact hole and covers the isolation dielectric layer. In the present invention, the filling layer is formed at the bottom of each trench so as to shield the overlapping area between the bottom of the trench and the drift region, thereby reducing gate electrode charges Qgc.

The invention provides a domestication method of a nicotine degrading strain, which is characterized by comprising the following steps: S1, providing a starting strain: acquiring a Sphingobacterium psychromonas strain or a flora containing the Sphingobacterium psychromonas strain, and preparing a bacterial solution; s2, strain domestication: inoculating the bacterial liquid into a domestication culture medium for domestication, gradually increasing the concentration of nicotine in the domestication culture medium in a gradient manner, gradually reducing the concentration of a yeast extract in a gradient manner, and domesticating for 2-20 generations to obtain a domesticated strain. The strain obtained by the method has the capability of efficiently degrading nicotine, can survive in high-concentration nicotine wastewater, can degrade organic matters in the wastewater, plays a dual role, and has a relatively high industrial value.

The invention discloses a polymerizable compound containing a chromophoric group for a reverse wavelength dispersion phase difference film and a liquid crystal composition thereof. According to the compound, benzothiazole is used as a chromophoric nucleus, strong electron-withdrawing trifluoromethyl is introduced to a specific position, and a side chain is connected through a thioether bond, so that high reverse wavelength dispersity, extremely high solubility and excellent compatibility with a conventional positive dispersion monomer are synchronously realized. After a liquid crystal composition containing the compound is subjected to orientation coating and photopolymerization, a high-transparency reverse wavelength dispersion phase difference film which is extremely low in haze, uniform in orientation and small in shrinkage stress can be prepared, the contradiction between the optical performance of an existing material and the stability of a film forming process is thoroughly solved, and the high-transparency reverse wavelength dispersion phase difference film is suitable for high-end OLED and Mini / Micro-LED wide-color-gamut displays.

The application discloses a metal complex and a preparation method and application thereof. Specifically, the metal complex catalyst is prepared by complexing a chiral tetradentate ligand with a metal precursor, the catalyst can realize asymmetric hydrogenation of a ketone, and through comparison of different preparation catalyst processes, an easy-to-prepare and simple-to-operate method is determined, the metal complex catalyst prepared by the method is stable in property, has certain tolerance to water and oxygen, can greatly improve catalytic efficiency, is suitable for industrial production, has a wide substrate application range, and has important practical value and industrialization prospect.

This invention relates to the field of ore flotation technology, specifically a low-consumption, high-efficiency flotation reagent for high-calcium, fine-muddy fluorite ore, its application, and a flotation method. The flotation reagent includes a modifier, a compound depressant, a compound collector, and a frother. The modifier includes sodium carbonate; the compound depressant includes water glass, carboxymethyl starch, sodium hexametaphosphate, and sodium lignosulfonate; the compound collector includes oleic acid, oxidized paraffin soap, sodium dodecyl sulfonate, and benzoyl hydroxamic acid; and the frother includes pine oil. Through the complementary functions of the compound depressant and the compound collector, highly efficient selective inhibition of high-calcium gangue and highly selective collection of fluorite are achieved, effectively dispersing fine mud, reducing froth entrainment, and ultimately obtaining a fluorite concentrate with a stable grade ≥97.0%, meeting the quality requirements of metallurgical and acid-grade fluorite products. This reduces the negative impact of fine nuclei on flotation, stabilizes the fluorite recovery rate, and increases the fluorite recovery rate by 3-6%, achieving dual stability in grade and recovery rate.

The application belongs to the technical field of functional polymer materials, and particularly relates to an acid and alkali resistant polytetrafluoroethylene composite material and a preparation method and application thereof, wherein the polytetrafluoroethylene composite material comprises the following raw materials in parts by weight: PFA 89 parts, plasticizer 1-4.5 parts, coupling agent 0.5-2 parts, weathering agent 0.5 part and functional additive 4-9 parts; the functional additive prepared from flake graphite, polyamide acid and PFPE-DMA is uniformly coated on the surface of the PFA and the like in the form of a polar dispersion liquid, can play a role of filling structure and thermal self-polymerization in the PFA melt extrusion molding process, construct a rigid-flexible polymer anti-permeation acid and alkali resistant network, and is suitable for manufacturing complex corrosion prevention parts under extreme working conditions.

The utility model relates to a continuous efficient reaction device for glycol ketal or acetal, and relates to the field of fine chemical production, the continuous efficient reaction device for glycol ketal or acetal comprises a condensation tower, an oil-water separator and a rectifying tower, the condensation tower is filled with a catalyst; the oil-water separator is communicated to the output end of the condensation tower and is provided with a first discharge hole for outputting a water phase; the rectifying tower is communicated to the first discharge hole of the oil-water separator, and the rectifying tower is provided with a second discharge hole for outputting dihydric alcohol and a third discharge hole for outputting water; the third discharge hole is communicated to the output end of the condensation tower and is used for supplementing raw materials to the condensation tower. The dihydric alcohol separated after water is removed through rectification can be used as a raw material to be re-put into the condensation tower to be subjected to condensation reaction with ketone or aldehyde, and the method has the characteristics of continuous process, low investment and capability of promoting ketal or aldolization reaction without carrying water through an entrainer, and has relatively high industrial value.

The invention belongs to the technical field of epoxy resin materials, and particularly relates to a P / N / S type flame retardant, a synthesis method and application of the P / N / S type flame retardant in epoxy resin. 2-aminobenzothiazole and phenylphosphonic acid react in an alcohol solvent system under the heating condition, white crystals are separated out after cooling, and the novel flame retardant is synthesized. In the chemical structural formula of the flame retardant, 2-aminobenzothiazole and phenylphosphonic acid are combined by electrostatic attraction to form an ionic compound. The flame retardant is directly mixed with a bisphenol A diglycidyl ether monomer and is used for preparing an epoxy resin material. The synthesized novel flame retardant is high in flame retardant efficiency, when the adding amount is 5 wt%, the oxygen index of epoxy resin cured products can be increased to 36.4%, and vertical combustion passes the UL-94V-0 level. More importantly, the mechanical strength of the EP material is 1.7 times higher than that of pure EP.

The invention provides a synthetic method and application of a disperse dye intermediate, and relates to the technical field of dyes. According to the disperse dye intermediate synthesis method, m-aminoacetanilide and chloroethane are subjected to an alkylation reaction, filtrate is an ammonium chloride solution after an alkylation product is crystallized, ammonium chloride as a byproduct is concentrated after decoloration, and the step is applied after a water phase is condensed; the layered water phase is ammonium sulfate and an ammonium acetate solution, decoloring and concentrating to obtain a byproduct ammonium fertilizer, and applying the step after the water phase is condensed. The obtained salt crystals are sodium chloride and a small amount of sodium carbonate and sodium bicarbonate salt crystals which are not completely reacted, the salt crystals are dissolved with water and neutralized into a sodium chloride solution with hydrochloric acid, a byproduct sodium chloride is concentrated after decoloration, and the step is applied after a water phase is condensed. And recycling the solvent by distillation, and applying the raw materials to the step. The method has the advantages of mild reaction conditions, low equipment requirements and high process safety; product conversion rate is high, and raw material cost is low; three wastes are easy to treat, environment-friendly treatment cost is low, and pollution is small.

The application relates to the technical field of aluminum alloy materials, and specifically discloses a new energy battery package shell aluminum-silicon binary alloy and a preparation method thereof, which comprises the following steps: double-component independent precise smelting, smelt purification technology, smelt degassing and standing, high-low temperature double smelt synchronous diffusion mixing, low superheat laminar flow stable-pressure pouring, liquid nitrogen cooling and natural aging, so that the technical problems of large deformation, many defects and poor air tightness of a power battery shell are solved. The alloy is composed of aluminum and silicon and does not contain modification elements such as copper, magnesium, zirconium, titanium, rare earth and strontium, and has simple formula and strong recyclability; the method can refine the crystal grains; the residual stress of the aluminum alloy is greatly reduced, the air holes and shrinkage holes are eliminated, the size stability and sealing performance are improved, and the alloy is suitable for the harsh working conditions of long-term high-low temperature alternation and vehicle vibration of a new energy power battery.