63results about How to "Reduce process parameters" patented technology

The present invention relates to high-Al13 aluminum chloride polymer crystal and its preparation process. The preparation process includes the reaction of metal with hydrochloric acid or aluminum chloride solution, or the reaction of aluminum hydroxide or aluminum oxide with aluminum chloride solution, or electrolysis, electrodialysis, anionic resin exchange or distillation of aluminum chloride solution; filtering at 20-100 deg.c to eliminate residue, freeze or evaporating crystallization, solid-liquid separation, and stoving at 40-90 deg.c to obtain the high-Al13 aluminum chloride polymer crystal. The produced high-Al13 aluminum chloride polymer crystal has basicity higher than 61 %, alumina content higher than 33 %, water insolubles less than 0.3 %, key flocculating component Al13 over 90 % and thus excellent flocculating effect.

The invention discloses a method for preparing a positively charged polyvinyl chloride (PVC) hollow fiber nanofiltration membrane. The positively charged PVC hollow fiber nanofiltration membrane has a two-layer structure consisting of a positively charged compact skin layer and an electrically neutral porous support layer; the pore diameter of micropores of the compact skin layer is 1-5nm, and the pore diameter of micropores of the porous support layer is 10-100nm; and the outer diameter of the membrane is 1.5-3.0mm, and the inner diameter of the membrane is 0.5-2mm, wherein the positively charged compact skin layer comprises main components of polyvinyl chloride and cationic copolymer; and the electrically neutral porous support layer comprises main components of polyvinyl chloride and an inorganic filler. The method for preparing the positively charged PVC hollow fiber nanofiltration membrane comprises the following steps of: co-extruding positively charged compact skin layer membrane preparing liquid and electrically neutral porous support layer membrane preparing liquid in a two-layer ring shape; and curing and forming hollow fibers by using a dry-wet spinning process. The prepared hollow fiber nanofiltration membrane has the advantages of easily controlled interception property, high strength, simple preparation process and the like, and is a high-performance, low-cost and long-life nanofiltration membrane material for water treatment.

The invention discloses a polyester flat microporous membrane and a preparation method thereof. The microporous membrane comprises the following materials in percentage by mass: 60-99.9% of polyester and 0.1-40% of modifier; or 20-40% of non-woven fabric, 60-79.9% of polyester and 0.1-30% of modifier. The preparation method is realized on the basis of a thermally induced phase separation process and comprises the following steps: mixing the polyester, the modifier and diluter into a homogeneous solution at high temperature; scraping the homogeneous solution into a liquid membrane, cooling andcuring into a membrane so as to form a precursor membrane subject to microphase separation, and extracting to obtain a flat microporous membrane. The prepared polyester flat microporous membrane is in a spongeous structure with the pore diameter of 0.05-5.0 micrometers and the porosity of 30-80%, and has the advantages of narrow pore diameter distribution, uniform pore size, easily controlled pore size, high strength, symmetrical structure and the like, thereby being a filter membrane material for water treatment and a lithium ion battery diaphragm material with high performance, low cost andlong life.

The invention discloses a preparation method of a high-temperature smoke filter ceramic material with high thermal shock resistance, wherein the method takes beta-cordierite, potash feldspar, spodumene and kaolin as raw materials, takes mullite as additive and takes carbon powder, starch, silicon carbide powder, limestone, sawdust, coal slag and ceramic waste as hole-forming agent; the high-temperature smoke filter ceramic material with high porosity, high thermal shock resistance, high compression strength, excellent filter performance and controllable aperture can be prepared by ball grinding, molding and sintering processes. The source of the pore-forming agent is wide; the die pressing, cold isostatic pressing and casting molding can be adopted, so that the operation is convenient andthe production cost is low; the filter ceramic material has controllable aperture and porosity, and excellent high temperature resistance and thermal shock resistance. The technology provided by the invention solves dust filter problem of high-temperature and wet gas well and also is applied in kinds of fields such as separation and purification, sound absorption, catalyst carrier and the like.

The invention belong to the technical field of organic compound synthesis and provides a preparation method for a (para, para)-diisopropylphenyl diphenylamine product. The method includes the steps of: (A) in the presence of a montmorillonite-type supported catalyst and under the protection of nitrogen gas, mixing a polymerization inhibitor with [alpha]-olefin and diphenylamine to perform an alkylation reaction at 75-175 DEG C for 4-16 h; and (B) reducing the temperature to 45-140 DEG C, and adding an organic cosolvent and a stabilizer with stirring, and filtering the reaction liquid while hot, and performing stepwise crystallization and purification, wherein a mother liquid can be recycled. The (para, para)-diisopropylphenyl diphenylamine crystal product has stable performance and high base number, is free of the problems such as yellowing, performance reduction and the like even after long-time storage, has uniform granular size and is less than 0.2% in residual diphenylamine content. In the production process, the olefin and the catalyst can be recycled and no waste water and waste gas emission exists, so that the process is environment-friendly. The product can be widely applied in various elastomers, foam plastics and lubricant oil for achieving the effects of resisting oxidization and aging.

The invention discloses an injection molding technique of a microporous foamed PP (polypropylene) plastic product, which comprises the following steps: preparing a PP composite material, preparing a PP foaming master batch, feeding, melting, foaming, injecting, cooling and opening the mold. By controlling the formula, injection-molding pressure and temperature, mold temperature and other key parameters in the microporous injection molding process, the invention can lower the density of the molded PP plastic product by up to 15%, and achieves the effects of light weight and production cost saving. The microporous foamed PP has uniform pore size; and the molded PP plastic product has favorable tensile strength, bending strength and impact strength.

The invention relates to a method for preparing a copper-based composite material. The method uses copper powder and zirconium carbide powder as raw materials, adopts a ball mill to perform ball milling on the raw materials, and the ball milling medium is zirconium carbide balls. Pure argon and sealed. After ball milling, put the mixed powder into a graphite mold and sinter in a vacuum hot-press furnace, keeping constant temperature and applying pressure at the highest sintering temperature. After sintering, the pressure is released, and the furnace is cooled to room temperature, and the prepared material is the copper-based composite material of the present invention. The method of the invention is simple, and the prepared copper-based composite material has excellent wear resistance and easy processing performance, and is suitable for making parts in working conditions subject to impact and easy to wear.

The invention discloses a thermal treatment method for improving hardness of a TC21 two-phase titanium alloy and belongs to the technical field of titanium alloy thermal treatment. According to the method, by carrying out heating, heat preservation and water quenching on the TC21 two-phase titanium alloy subjected to beta forging above the phase transformation point, a whole rhombic martensitic structure is obtained, a nanoscale twin crystal alpha-phase structure is obtained by carrying out tempering treatment on the rhombic martensitic structure at 500-550 DEG C, and compared with a forging structure, the hardness of the TC21 titanium alloy is remarkably improved through the nanoscale twin crystal alpha-phase structure. As the TC21 titanium alloy has good hardenability, the whole rhombicmartensitic structure can be easily obtained. The method provided by the invention is small in number of technical parameters, high in feasibility, easy to implement, stable in performance and beneficial for industrial production of TC21.

The invention relates to a CoSb3 thermoelectric material, in particular to a method for preparing a CoSb3 nanometer particle film. The method comprises the following steps of: firstly, weighing CoC12.6H2O powder and Sb powder according to the molar ratio of 1:3; respectively filling the powder into respective crucible; putting the crucibles and glass slide substrates into a quartz pipe; placing the quartz pipe into a horizontal pipe type furnace; vacuumizing and aerating mixed air of 95 percent of argon and 5 percent of hydrogen for multiple times and removing oxygen in the quartz pipe; raising the temperature of the tubular pipe; performing chemical vapor deposition on the glass slide substrates in a low-pressure state to acquire the CoSb3 nanometer particle film; and testing Seebeck coefficient, conductivity and heat conductivity of the CoSb3 nanometer particle film and calculating a zone time (ZT) value of the CoSb3 nanometer particle film. According to the invention, the CoSb3 nanometer particle film is synthesized by one step, the process is simple, and the diameter of the prepared CoSb3 nanometer particle is between 200 and 400nm; and moreover, the CoSb3 thermoelectric material has good conductivity and low heat conductivity, can be directly used for thermoelectricity researches, and is used for novel high-efficiency thermoelectric conversion devices.

The invention disclosed herein relates to an improved process for making elastomeric polyisoprene articles. In particular, the process of the invention is a system which produces synthetic polyisoprene articles exhibiting tensile strength properties similar to that of solvent-based processes using natural rubber latex. The process comprises an accelerator composition at the pre-cure stage comprising a dithiocarbamate, a thiazole and a guanidine compound. In a preferred embodiment, the accelerator composition comprises zinc diethyldithiocarbamate (ZDEC), zinc 2-mercaptobenzothiazole (ZMBT) and diphenyl guanidine (DPG), in conjunction with a stabilizer, such as sodium caseinate. The invention also includes an elastomeric polyisoprene product made by the process, such as a surgeon's glove.

Disclosed is a process for preparing cobaltosic oxide powder through cobalt chloride solid phase catalytic oxidation, which comprises mixing cobalt chloride with catalyst proportionally, drying, disintegrating and sintering, the advantages of the process include shorter process flow, higher controllability of the processing parameters, better consistency and narrower dimension distribution.

The invention discloses a combined sliding table driven by hydraulic cylinders and gears. The combined sliding table comprises a controller, a sliding table body, a first sliding table mechanism, a second sliding table mechanism,..., and an Nth sliding table mechanism, wherein N is the total number of the sliding table mechanisms and is larger than or equal to three. Each sliding table mechanism comprises a drive gear, a sliding table base, a linear guide rail, a drive oil cylinder, a sliding table body rack, a sliding table base rack and a sliding table body position induction device. The sliding table bases of the sliding table mechanisms are combined together in an end butt joint manner and jointly use one sliding table body. The linear guide rails are connected. Rotation shafts are arranged in the middles of the drive gears and fixed to power output ends. The sliding table base racks are parallel to telescopic oil cylinders. Each sliding table body rack and the sliding table base rack of the adjacent sliding table mechanism can be partially crossed left and right. Due to the gear and double-rack transmission form, double amplification of the stroke and the speed of the drive oil cylinders can be achieved, conversion of drive force of two sliding bases to the sliding table body is achieved through the butt joint function, and accordingly, the cross-region operation of the sliding table body is achieved.

The invention relates to a kind of arc spray device and spraying technology. A carrying wire plate is on the wire feeder of the device. Electric source for spraying connects to controlling box through size 1 controlling line and size 1 electric output cable. The controlling box connects to the double-spout spray gun through size 2 air-compressed tube. The wire feeder connects to the double-spout spray gun through electric cables and wire duct. Pressure of compressed air for spraying is 0.6Mpa to 0.8Mpa. The eclectic voltage for spraying is 20V to 35V .The electric current for spraying is 50A to 300A. The invention eliminates steps such as renewing painting material, adjusting technical parameter and so on .So it can save spraying time and raise working efficiency .The invention can be used to make mosaic laminating layers of different material and different performance, for example, thick base Ni3Al layer with thin mosaic WC layer .The invention has prominent advantages such as simple spray procedure, high spray efficiency, saving energy and resource and so on. The spraying method of this invention can be operated easily.

The invention relates to an ion injection method of a bag-shaped injection region and a manufacture method of an MOS (Metal Oxide Semiconductor) transistor, wherein in the ion injection method for forming a bag-shaped injection region of an MOS transistor, the bag-shaped injection region is formed by twice multi-step rotations of ion injection, and the start angles of the twice multi-step rotations are different. Compared with the prior art, the invention can control the junction capacitance of the MOS transistor and ensure that the threshold voltage Vt of the manufactured MOS transistor is more smooth along with the change of Id, thereby being more beneficial to manufacturing MOS transistor in smaller sizes.

The invention discloses a lyophobic matrix sustained-release tablet for pH independence drugs and a preparation method thereof. The sustained-release tablet is prepared from the following raw materials: a main drug, a wax matrix material, a local pH regulating agent, an adhesive, a filler, a lubricating agent and a glidant, wherein the local pH regulating agent is selected from calcium hydrogen phosphate dihydrate, disodium hydrogen phosphate or calcium silicate. The preparation method of the lyophobic matrix sustained-release tablet comprises the following steps: heating and melting the wax matrix material; uniformly mixing the main drug, the local pH regulating agent, the adhesive and the filler; melting and pelletizing the matrix material and the uniformly mixed materials; screening when the mixture is hot, granulating the mixture, performing standing to cool the mixture, adding the lubricating agent and the glidant into the mixture, and performing tableting to obtain the lyophobicmatrix sustained-release tablets. According to the lyophobic matrix sustained-release tablet, the local pH regulating agent is added into the existing prescription of diclofenac sodium sustained-release tablets, the pH value of a micro-environment can be maintained to promote solubility of drugs, and release in vitro of pH independence drugs can be improved.

The invention belongs to the technical field of inorganic synthesis, and specifically relates to a method for directly growing hemimorphite zinc silicate on a glass substrate, comprising the following steps: taking zinc chloride, cetyltrimethylammonium bromide, and Dissolve in distilled water; Dissolve and mix separately; Add ammonia water and stir to obtain a suspension; Prepare a clean glass slide as a substrate and put it into the suspension; Put it in an autoclave and keep it warm; Take out the slide after keeping warm ; Put the glass slide into the sintering furnace and sinter to obtain hemimorphite zinc silicate. In the above method, silicon element is provided by the substrate, and the hemimorphite zinc silicate can be prepared without adding additional silicon-containing compound raw materials, which is simple, easy to operate, and easy to control.