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136results about How to "Prevent crystallization" patented technology

Tilmicosin premix and preparation method thereof

The invention belongs to the technical field of veterinary preparations, and particularly relates to a tilmicosin premix and a preparation method thereof. The tilmicosin premix is prepared from the following raw materials: tilmicosin, a polylactic acid-glycolic acid copolymer, lecithin, modified hydroxypropyl methyl cellulose, grafted polyvinylpyrrolidone, polyethylene glycol and an antioxidant, a solid dispersion is formed through lecithin and grafted polyvinylpyrrolidone, the solubility and stability of tilmicosin are enhanced, polylactic acid-glycolic acid copolymer nano-microspheres are prepared through a double-emulsion solvent evaporation method, slow release of drugs is achieved, dodecyl modified hydroxypropyl methyl cellulose and polyethylene glycol are combined, and the sustained release effect is achieved. The solubility and the slow release characteristic are further enhanced. The activity of the granular premix is effectively preserved, and the granular premix is convenient to use and transport.
Owner:SHANGHAI TONGREN PHARM CO LTD

Preparation method of iron-silicon-based composite soft magnetic powder core

The invention discloses a preparation method of an iron-silicon-based composite soft magnetic powder core, which comprises the following steps: compounding and uniformly mixing iron-silicon-titanium powder and iron-silicon powder, and carrying out heat treatment in an air atmosphere; and then performing insulation coating on the surface of the magnetic powder by using a polyvinyl alcohol aqueous solution and a nano oxide, and performing compression molding and heat treatment to prepare the iron-silicon-based composite soft magnetic powder core. Compared with a conventional iron-silicon powder core, the iron-silicon-based composite soft magnetic powder core prepared through the method has the advantages that the direct-current bias performance under the condition of 100 Oe is higher than 76%, the volume loss Pcv under the conditions of 50 kHz and 100 mT is lower than 500 mW / cm < 3 >, and the loss performance is obviously improved.
Owner:YANGZHOU LEADING INNOVATION MATERIALS TECH CO LTD

SiZrOC thermal insulation ceramic material and preparation method thereof

The invention provides a SiZrOC thermal insulation ceramic material and a preparation method thereof, and relates to the technical field of thermal insulation materials. The preparation method comprises the following steps: mixing a zirconium source solution and a silicon source solution to obtain a photosensitive solution; wherein the zirconium source solution contains carbon-carbon double bonds, and the silicon source solution contains sulfydryl and carbon-carbon double bonds; performing ultraviolet radiation on the photosensitive solution to enable carbon-carbon double bonds in the photosensitive solution to react with sulfydryl, and performing molding treatment to obtain a precursor blank; and carrying out heat treatment on the precursor blank to obtain the SiZrOC thermal insulation ceramic material. Under the action of ultraviolet light, a mercapto-alcohol click reaction can be induced to enable the photosensitive solution to be crosslinked and cured, and then C and groups and the like which cannot be maintained at high temperature are removed through heat treatment, so that the SiZrOC heat insulation ceramic material is obtained, long-time and complex aging and low-temperature heat treatment are not needed, the preparation period is greatly shortened, and the preparation cost is reduced. The preparation efficiency of the SiZrOC heat insulation ceramic material is improved.
Owner:INST OF METAL RESEARCH - CHINESE ACAD OF SCI

Composite additive for vanadium electrolyte and preparation method thereof

The invention discloses a composite additive for a vanadium electrolyte and a preparation method of the composite additive, and relates to the technical field of vanadium batteries. The composite additive is applied to the electrolyte of the vanadium battery, the electrolyte is a positive electrode electrolyte and a negative electrode electrolyte, the concentration of the vanadium electrolyte can be improved, precipitation and crystallization of vanadium ions can be inhibited, and meanwhile, the electrochemical activity of the vanadium battery can be improved. The composite additive comprises a mixture formed by a first component and a second component, the first component comprises at least one of a fluorine-containing compound, oxyacid and oxysalt, and the second component is a surfactant.
Owner:XIAN NORTHWEST INST OF NONFERROUS GEOLOGY CO LTD

Iron-silicon-aluminum magnetic powder core and preparation method and application thereof

The invention provides an iron-silicon-aluminum magnetic powder core and a preparation method and application thereof. The Fe-Si-Al magnetic powder core comprises a Fe-Si-Al magnetic powder base body and a coating layer coating the surface of Fe-Si-Al magnetic powder. And the coating layer comprises silicon dioxide and aluminum phosphate. According to the Fe-Si-Al magnetic powder core provided by the invention, the silicon dioxide and the aluminum phosphate are used as the mixed insulating coating layer, so that the resistivity of the Fe-Si-Al magnetic powder core is increased, the eddy-current loss among particles is effectively reduced, meanwhile, the maximum forming density of the material is ensured, and a relatively high saturation magnetic flux density Bs is obtained, so that a high direct-current superposition characteristic is obtained; and the aim of giving consideration to low loss and high direct current superposition characteristics is fulfilled.
Owner:HENGDIAN GRP DMEGC MAGNETICS CO LTD +1

Uric acid reducing composition containing fructus gardeniae and preparation method of uric acid reducing composition

The invention provides a uric acid reducing composition containing fructus gardeniae and a preparation method of the uric acid reducing composition, and belongs to the technical field of medicines. The preparation method comprises the following steps: fermenting mulberry leaves, chicory, cape jasmine and kudzu vine roots through lactobacillus rhamnosus and bifidobacterium longum, separating probiotics from fermentation liquor, adding immobilized ionic liquid into the fermentation liquor, introducing carbon dioxide for adsorption, filtering, adding solids into ethanol, heating for desorption, concentrating to obtain an extract 1, precipitating filtrate with ethanol to obtain an extract 2, and carrying out freeze-drying to obtain the folium mori-chicory-cape jasmine extract. The preparation method comprises the following steps: embedding probiotics together with sodium alginate to prepare a uric acid-reducing embedding material, and uniformly mixing the uric acid-reducing embedding material with the extract 1, vitamin C and tea polyphenol to prepare the uric acid-reducing composition containing fructus gardeniae. The prepared uric acid reducing composition containing fructus gardeniae can promote uric acid excretion, inhibit sodium urate crystallization, improve the antioxidant effect, repair intestinal barriers, relieve inflammation, inhibit xanthine oxidase (XOD) activity and expression and reduce the blood uric acid level, has a good uric acid reducing effect and has a wide application prospect.
Owner:FOSHAN GOLDEN HEALTH TECH CO LTD +1

Crystallization filtering device for pesticide production

The utility model provides a crystallization filtering device for pesticide production, which belongs to the technical field of pesticide production equipment and comprises a crystallization tank body and a separation box body, and a filter screen plate is arranged in the separation box body; the crystallization tank body is provided with a heat exchange mechanism, and the heat exchange mechanism comprises a jacket and a heat exchange cylinder arranged in the crystallization tank body; the heat exchange cylinder and the crystallization tank body are coaxially arranged; the crystallization tank body is further provided with a stirring and scraping mechanism, the stirring and scraping mechanism comprises a motor, and the output end of the motor is connected with the rotating shaft; the rotating shaft penetrates through the heat exchange cylinder and is rotationally and hermetically connected with the heat exchange cylinder; a scraping assembly is arranged on the rotating shaft below the heat exchange cylinder and comprises two positioning rods, and the two positioning rods are connected with the rotating shaft through connecting rods; a scraping plate is arranged on each positioning rod and is respectively propped against the heat exchange cylinder and the crystallization tank body. The device integrates crystallization and filtration, so that the cooling efficiency and the crystallization efficiency of the device are improved, the cooling and stirring effects are considered, and crystals are not left and are easy to discharge.
Owner:INNER MONGOLIA ZHONGGAO CHEM CO LTD

Denitration urea hydrolysis hydrophobic utilization system and method

The invention discloses a denitration urea hydrolysis hydrophobic utilization system and method. The system comprises a hydrophobic tank, a urea dissolving tank, a urea solution storage tank and a urea hydrolysis reactor, after the urea solution storage tank heat tracing water supply pipe exchanges heat with the urea solution storage tank, the urea solution returns to the drainage tank through the urea solution storage tank steam drainage pipeline, and the temperature of drainage returned to the drainage tank is reduced while the urea solution storage tank is heated; the cooled drain water enters the urea dissolving tank through a urea dissolving tank water supplementing pipe for preparing a urea solution, and is connected to a urea solution pipeline flushing pipe for flushing a urea solution pipeline to prevent urea crystallization; and the residual drain enters the boiler drain flash tank through a boiler drain flash tank pipeline, and returns to a unit thermodynamic system to serve as unit supplementary water. The problem of comprehensive utilization of heat and drained water is solved, the operation cost is reduced, the cyclic utilization level of water resources is improved, the wastewater treatment load is reduced, and the system tends to be reasonable.
Owner:JIANGSU FRONTIER ELECTRIC TECH

PVDF / PI (Polyvinylidene Fluoride / Polyimide)-based ultrathin composite electrolyte membrane as well as preparation method and application thereof

The invention discloses a PVDF / PI-based ultrathin composite electrolyte membrane and a preparation method and application thereof, and belongs to the field of lithium ion solid electrolytes.The preparation method comprises the steps that a PVDF / PI porous membrane is prepared through a non-solvent phase inversion method, after the membrane is immersed in lithium salt, a large number of regular holes are formed in the surface of the membrane in combination with a hot stamping technology, formula slurry of PVDF / inorganic solid electrolyte is coated, and the PVDF / PI-based ultrathin composite electrolyte membrane is obtained. And obtaining the composite electrolyte membrane. According to the PVDF / PI composite polymer electrolyte membrane prepared by the invention, the mechanical strength of a solid electrolyte membrane is improved to a great extent, the crystallization of PVDF is further destroyed, and the ionic conductivity of the solid electrolyte is improved; the thickness of the electrolyte membrane is controllable, the electrolyte membrane is ultrathin, the preparation process is simple, the cost is relatively low, and the electrolyte membrane has a very good application prospect in all-solid-state lithium ion batteries.
Owner:INST OF ENERGY HEFEI COMPREHENSIVE NAT SCI CENT (ANHUI ENERGY LAB)

Slag system for electroslag remelting of low-Si low-Al martensitic heat-resistant steel containing B and Zr and smelting method

The invention relates to a slag system for electroslag remelting of low-Si low-Al martensitic heat-resistant steel containing B and Zr and a smelting method, and belongs to the technical field of special metallurgy. The slag system comprises the following components in percentage by weight: 45-65% of CaF2; 11 to 20 percent of Al2O3; 15 to 27% of CaO; 2 to 5 percent of MgO; 0.5 to 5.0 percent of B2O3; zrO2: 2%-7%; b2O3 and ZrO2 in a slag system meet the condition that 1g ((% ZrO2) 3 / (% B2O3) 2) is more than 2.0 and less than 2.7. The content of B and Zr in the steel is controlled through the reaction of B and Zr dissolved in the molten steel and B2O3 and ZrO2 in the slag, namely 4 [B] + 3 (ZrO2) = 3 [Zr] + 2 (B2O3), so that the content of B and Zr in the steel is in a target range.
Owner:CHINA IRON & STEEL RESEARCH INSTITUTE GROUP CO LTD

Preparation method of high temperature ablation resistant short carbon fiber reinforced SiBCN-MAS composite material

ActiveCN116969774Bimprove bindingImprove anti-ablation performance
A method for preparing a high-temperature ablation-resistant chopped carbon fiber reinforced SiBCN‑MAS composite material, which relates to a method for preparing a SiBCN ceramic-based composite material. The present invention aims to solve the problem that the existing carbon fiber or cracked carbon coated carbon fiber reinforced SiBCN ceramic-based composite materials have poor contact surface bonding and limited improvement in high-temperature ablation resistance. Method: 1. Prepare cracked carbon coated chopped carbon fibers; 2. Prepare SiBCN amorphous ceramic powder; 3. Mix raw materials; 4. Sinter. The present invention is used for the preparation of high-temperature ablation-resistant chopped carbon fiber reinforced SiBCN‑MAS composite materials.
Owner:HARBIN INST OF TECH

Structure for preventing crystallization of liquid discharge main pipe of crude foil engine

The utility model discloses a structure for preventing crystallization of a liquid discharging main pipe of a crude foil engine, which comprises an anode tank and a liquid feeding distributor arranged on the lower side of the anode tank, the anode tank is connected with a backflow main pipe through a backflow branch pipe, and the liquid feeding distributor is connected with a liquid discharging branch pipe communicated with the liquid discharging main pipe. The backflow main pipe and the liquid discharging main pipe are both communicated with the dirty liquid tank, a control valve is installed on the liquid discharging branch pipe, an anti-crystallization communicating pipe is arranged between the backflow branch pipe and the liquid discharging main pipe in a communicating mode, and the end, connected with the backflow branch pipe, of the anti-crystallization communicating pipe is higher than the end, connected with the liquid discharging main pipe, of the anti-crystallization communicating pipe. And by arranging the anti-crystallization communicating pipe, the fluid in the backflow branch pipe can be drained into the liquid discharging main pipe, so that the liquid discharging main pipe is always flushed by the fluid when the equipment normally operates, and the crystallization condition is avoided.
Owner:JIUJIANG AMBER NEW MATERIALS CO LTD +1

A freeze-resistant molten core bead, its preparation method and its application

This application relates to the field of food processing technology, specifically disclosing a freeze-resistant lava-filled popping bead, its preparation method, and its application. The freeze-resistant lava-filled popping bead comprises an inner core liquid, a popping bead wall material liquid, a curing liquid, and a storage liquid. The inner core liquid comprises the following raw materials in parts by weight: 80-120 parts white sugar, 3-6 parts calcium salt, 30-60 parts edible alcohol, and 41-68 parts water. The preparation method is as follows: white sugar, calcium salt, edible alcohol, and water are mixed until dissolved to obtain the inner core liquid; alginate, glycerin, pectin, and acidic substances are mixed with water until dissolved to obtain the popping bead wall material liquid; calcium salt, chitosan, and water are mixed evenly to obtain the curing liquid; fructose syrup, edible alcohol, and water are mixed evenly to obtain the storage liquid; the inner core liquid is added dropwise to the popping bead wall material liquid for a coating reaction; excess adhesive is filtered out and washed away; the bead is then placed in the curing liquid and the storage liquid in sequence; after packaging and high-temperature sterilization, the finished product is obtained. It has the advantage of bursting and lava-filled core when eaten frozen.
Owner:QINGDAO BRIGHT MOON SEAWEED GROUP

Beaker placing tray for battery tester

The utility model discloses a beaker placing tray for a battery tester, which belongs to the technical field of battery testing equipment and comprises a base, a plurality of accommodating grooves are uniformly distributed at the top of the base along the circumferential direction, and elastic clamping mechanisms are arranged on the inner walls of the four sides of each accommodating groove. A beaker is positioned through four-direction synchronous clamping, one side of the base is rotationally connected with an openable cover plate through a hinge piece, a plurality of sealing assemblies are installed on the bearing face of the cover plate, the sealing assemblies and the corresponding containing grooves form an axial alignment relation, and when the device is closed, multi-stage sealing protection is formed. Through structure optimization, stable positioning of the beaker, multi-stage sealing protection and ordered cable management are realized.
Owner:ANQING XUANDA HYDROGEN ENERGY TECHNOLOGY CO LTD

A CD47 monoclonal antibody freeze-dried powder preparation and its preparation process

The present invention belongs to the technical field of protein and polypeptide drugs, and specifically relates to a CD47 monoclonal antibody lyophilized powder preparation. The lyophilized powder preparation comprises CD47 monoclonal antibody, dextran, β-cyclodextrin, a protective agent, a solubilizing agent and a buffer. The CD47 monoclonal antibody obtained after lyophilization by the prescription and lyophilization process of the present invention has high stability, is suitable for large-scale production, and is conducive to storage and transportation.
Owner:LUNAN PHARMA GROUP CORPORATION

Protective film material for floral tube of brine well, preparation method of protective film material and floral tube of brine well

The invention provides a brine well floral tube protective film material, a preparation method thereof and a brine well floral tube. The protective film material for the floral tube of the brine well comprises a fluorine-containing polymer, a sulfonic acid group-containing polymer and an additive, and does not contain metal elements. The protective film material for the floral tube of the brine extraction well, which contains the fluorine-containing polymer, the sulfonic acid group-containing polymer and the additive and does not contain metal elements, can effectively prevent salt in brine from crystallizing on the surface of the floral tube and remarkably avoid the salt deposition phenomenon, so that the brine extraction efficiency is improved, and the maintenance cost is reduced.
Owner:QINGHAI SALT LAKE IND

A health-care patch for treating neck-shoulder-lumbar-leg pain and a preparation method thereof

PendingCN122251505Areduce polarityavoid separabilityAnthropod material medical ingredientsAntipyreticNeck shoulderPharmaceutical drug
The present application relates to the technical field of external use patch, disclose a kind of neck shoulder waist leg pain health care patch and its preparation method, the health care patch includes backing layer, ointment layer and anti-adhesion release layer;Ointment layer raw material includes: traditional Chinese medicine extract flow leaching paste, L- (+) -tartaric acid, PVP K30, PEG-400, ternary eutectic solvent, polyacrylate pressure sensitive adhesive matrix and ultrafine medicinal powder.Preparation, after flow leaching paste, tartaric acid etc. are mixed, gel precursor is formed by vacuum dewatering and dealcoholization, swelling is added again with eutectic solvent, and then mixed with pressure sensitive adhesive matrix and medicinal powder high shear, finally coating solidification.The present application constructs physical crosslinking gel network in colloid interior and promotes effective component acid-base salt formation, effectively avoids polar component crystallization precipitation, reduces the skin irritation caused by drug burst release, simultaneously improves the cohesion of ointment, realizes long-acting smooth drug release.
Owner:HENAN RUNLING PHARM CO LTD

A confinable graft network anti-freeze hydrogel, and a preparation method and application thereof

This invention provides a confined grafted network antifreeze hydrogel, its preparation method, and its applications. The preparation method of the hydrogel includes: firstly, acetalizing and crosslinking polyvinyl alcohol and glutaraldehyde under acidic conditions to obtain a polyvinyl alcohol-glutaraldehyde hydrogel with a three-dimensional network structure; then, immersing it in a solution containing acrylic monomers and the initiator cerium ammonium nitrate, and heating it to allow the acrylic monomers to graft and polymerize onto the backbone, forming a confined grafted network structure. The hydrogel has a freezing temperature as low as -31.58℃, an elongation at break greater than 300% at -30℃, a tensile strength of approximately 5.6 MPa, and an electrical conductivity of approximately 0.03 S / m, and exhibits a stable and sensitive resistance response to tensile strain. This invention does not require the addition of exogenous small molecule antifreeze agents, and can maintain excellent mechanical flexibility, high strength, and stable conductive sensing performance at low temperatures. It is suitable for flexible strain sensors and wearable electronic devices, and has broad application prospects, especially in cold or extreme low-temperature environments.
Owner:CHONGQING UNIV OF TECH

Aluminum chloride-based composite flocculant and preparation method thereof

The application discloses a composite flocculant based on aluminum chloride and a preparation method thereof, and belongs to the technical field of flocculant preparation, and is used for solving the technical problem that the stability and flocculation performance of the flocculant need to be further improved in the prior art; the branched polymer containing polycarboxyl groups is prepared by the reaction of tris(2-aminoethyl)amine and pyromellitic dianhydride, and the taurine groups are introduced to obtain the sulfobranched polycarboxyl polymer; the titanium phosphorus silicon aminopropyl composite is synthesized by using the sol-gel method, and the inorganic-organic network combination is realized; the polyimidazolium-hydroxy ether is obtained by the reaction of imidazole, epichlorohydrin and bisphenol A diglycidyl ether; the composite flocculant is formed by the reaction of the three under the acidic condition, the composite flocculant combines the polycarboxyl groups, the sulfonic acid groups, the imidazolium groups and the inorganic-organic skeleton, has high charge density, good adsorption and bridging performance, can rapidly form stable flocs, and can effectively remove the suspended particles and organic pollutants in water.
Owner:WUXI BISHENG WATER TREATMENT AGENT CO LTD

A calcium and magnesium ion crystallization inhibiting filter mechanism

This utility model discloses a calcium and magnesium ion crystallization inhibition filtration mechanism, including a tank. A first filter frame and a second filter frame are arranged inside the tank. A rotating rod passes through the center of the top of each filter frame, and the rotating rod is rotatably connected to the first and second filter frames respectively via bearing seats. Two first support frames and two second support frames are fixedly connected to the surface of the rotating rod. A brush strip is provided on the side wall of the first support frame. This utility model improves the filtration effect by setting two layers of filter frames with gradually decreasing gaps inside the tank. Simultaneously, the brush strips can continuously scrub the outer wall of the filter screen to remove attached crystalline impurities. The extrusion cylinder periodically extrudes the filter screen, causing the filter screen pores to undergo dynamic deformation of expansion and contraction. This not only breaks down the microcrystalline structure through the rubbing of the filter screen fibers, but also uses the water flow during pore expansion to further clean residual impurities inside the filter screen, effectively extending the filter screen's service life and reducing maintenance frequency.
Owner:QINGDAO LANGBANG WATER SUPPLY EQUIP CO LTD

Annular blowing air knife for wiredrawing

The invention belongs to the technical field of air knives, and particularly relates to a wiredrawing annular blowing air knife which comprises an air inlet pipe, a shell and a cover body, one end of the air inlet pipe is connected with a fan, the other end of the air inlet pipe is installed on the shell, a wire inlet hole penetrates through the middle of the cover body, a wire penetrating part is arranged in the shell, and a gas compression cavity communicated with the air inlet pipe is formed between the wire penetrating part and the inner wall of the shell. The threading part comprises a connecting piece, a first threading part and a second threading part, the first threading part and the second threading part are coaxially arranged, the end part of one end of the first threading part protrudes, the end part of one end of the second threading part is sunken, a gap exists between the protrusion and the sunken part to form an air passing channel, and a mounting hole and a first threading hole which are communicated are sequentially formed in the first threading part; and a second threading hole penetrates through the second threading part. The fan replaces an air compressor to reduce power consumption, gas is pressurized and then purges the surface of the steel wire through the gas channel, and the angle and the gap of the gas channel are set to ensure the purging effect and effectively avoid the problem of crystallization on the surface of the steel wire.
Owner:巩义市恒星金属制品有限公司

Two crystal forms of GL-V8 and preparation method thereof

The invention belongs to the field of medicinal chemistry, and particularly relates to two crystal forms of GL-V8 and a preparation method thereof, the two crystal forms are respectively a crystal form I and a crystal form II, the two crystal forms are good in stability, solubility and hygroscopicity meet medicinal requirements, the preparation method is simple, the cost is low, and the crystal forms have important value for optimization and development of the medicine in the future.
Owner:NANJING QINLING PHARMACEUTICAL TECHNOLOGY CO LTD

Cleaning device and crude foil engine

The utility model provides a cleaning device and a crude foil engine. The crude foil engine comprises an electrolytic bath and a cathode roller rotationally arranged in the electrolytic bath. The cleaning device is used for the crude foil engine and comprises an acid spraying piece, and the acid spraying piece comprises an acid pickling pipe and is used for spraying acid to a copper foil on a cathode roller; the acid spraying piece further comprises a liquid dropping pipe, the liquid dropping pipe is communicated with the liquid inlet end of the acid pickling pipe and used for introducing washing liquid into the acid pickling pipe, and the washing liquid flows from the liquid inlet end to the liquid outlet end along the bottom wall of the acid pickling pipe and then is discharged. The cleaning device can wash the pickling pipe, can prevent the pickling pipe from crystallizing, and effectively improves the quality of copper foil.
Owner:SHENZHEN HUIKE NEW MATERIALS CO LTD

Electrophotographic photoreceptor, process cartridge, and image forming apparatus

PendingEP4379468A4excellent crack resistance and sensitivity characteristicprevent image defectsTesting MethodsMechanical engineering
An electrophotographic photosensitive member includes at least one photosensitive layer on which a first photosensitive layer disposed on an outermost side thereof. The first photosensitive layer contains a charge generating material, a binder resin including a polyarylate resin with repeating units (1), (2), (3), and (4), an electron transport material, and a hole transport material. The electron transport material includes a compound represented by formula (10), (11), or (12). The hole transport material includes compounds represented by formulas (21) and (22): A percentage content of a number of repeats of the repeating unit (3) to the total number of repeats of the repeating units (1) and (3) is greater than 0% and less than 50%. A percentage content of a number of repeats of the repeating unit (4) to the total number of repeats of the repeating units (2) and (4) is at least 35% and less than 70%.
Owner:KYOCERA DOCUMENT SOLUTIONS INC

Catalyst as well as preparation method and application thereof

The invention discloses a catalyst as well as a preparation method and application thereof, tungsten trioxide nanorods and powdered sulfur are subjected to vulcanization reaction to generate tungsten disulfide, and tungsten disulfide is subjected to plasma etching to obtain a catalyst intermediate; dispersing the catalyst intermediate in a rhodium salt solution, separating and drying to obtain the catalyst; or the tungsten trioxide nanorod can be firstly loaded on the conductive carrier and then subjected to the steps of vulcanization, plasma etching and rhodium loading, and the catalytic material is obtained; the catalyst and the catalytic material provided by the invention have low cost and high hydrogen evolution catalytic efficiency, especially show good catalytic activity and stability under acidic and alkaline conditions, and are expected to realize practical application in the field of hydrogen production by electrolysis of water.
Owner:JIANGSU GANGHONG FIBER CO LTD

Multi-temperature zone dimethyl sulfoxide fractional storage device

ActiveCN224511832Ueasy to moveHave a thermal insulation effectHeat conservationMechanical engineering
The utility model relates to dimethyl sulfoxide storage technical field, specifically is multi -temperature zone dimethyl sulfoxide grading storage device, including the heat preservation bucket, the heat preservation bucket is fixedly sleeved with annular outer heat conduction plate and inner heat conduction plate, the heat preservation bucket, outer heat conduction plate and inner heat conduction plate between respectively form normal temperature area, low temperature area and heat preservation area, the heat preservation bucket top seal has the sealing plate that closes normal temperature area, low temperature area and heat preservation area, and the bottom surface of heat preservation bucket is set up respectively with normal temperature area, low temperature area and heat preservation area one -to -one corresponding inlet pipe and outlet pipe on sealing plate, inlet pipe and outlet pipe are controlled through the valve, the use of the application can make that the stock solution is low temperature area heating, working liquid is properly heat preservation area heating, and heat preservation area is arranged in the middle, effectively avoid the crystallization phenomenon caused by the temperature of heat preservation area too low, can utilize the rotation of inner vertical pipe rotation drive pole to rotate simultaneously, further prevent crystallization recovery liquid crystallization.
Owner:山东胜华国宏新材料有限公司

AsGeSeSi-based OTS gate tube material and preparation method thereof

The invention provides a preparation method of a GeSe OTS gate tube material introduced with As and Si elements. The amorphous state model of the GeSe OTS gate tube in which As and Si elements are introduced is constructed, the amorphous degree and state density of the material model in which the As and Si elements are introduced are compared, and it is clarified that the amorphous degree of the AsGeSeSi material is larger and the ground state resistance is larger. And then, according to the bonding characteristic, it is clarified that the structure of the GeSe OTS gate tube material after the As and Si elements are selectively introduced is more stable, and guiding significance is provided for optimizing the performance of an OTS threshold device.
Owner:HUBEI UNIV

A flake caustic machine having reduced crystallization

ActiveCN224641016Uprevent crystallizationEasy to scrape off
The utility model belongs to piece alkali machine technical field, concretely relates to a piece alkali machine with the function of reducing crystallization alkali, including alkali tank, the top fixed coupling of alkali tank has two bearing seats, the inside of each bearing seat is all through bearing installation has the pipe of turning, the pipe of turning between two is commonly fixedly connected with the drum of turning, and the drum of turning is communicated with the pipe of turning and is set up, the top of drum of turning is provided with the current -collecting box, the left and right sides of current -collecting box are commonly fixedly connected with cooling pipe, cooling pipe penetrates pipe of turning and drum of turning and is connected with pipe of turning through sealing bearing. By setting up electric heating rod and temperature sensor in the current -collecting box for cooling water storage, when the water temperature of cooling water is low, the electric heating rod carries out temperature rise to cooling water, inhibits the excessive crystallization of lye on the surface of drum of turning due to the temperature is too low, and is scraped down conveniently by scraper.
Owner:新疆圣雄氯碱有限公司 +1

Multi-layer microcapsule structure epsilon-CL-20 explosive crystal capable of resisting dissolution and inhibiting crystal change and preparation method of multi-layer microcapsule structure epsilon-CL-20 explosive crystal

The invention relates to a multilayer microcapsule structure epsilon-CL-20 explosive crystal capable of resisting dissolution and inhibiting crystal change and a preparation method of the multilayer microcapsule structure epsilon-CL-20 explosive crystal, and belongs to the technical field of energetic materials. The core is composed of epsilon-CL-20 explosive crystals, the coating inner layer is formed by polydopamine, and the coating outer layer is composed of a fluorine-containing polymer with low surface tension and indissolvable characteristics and a functional additive. The functional auxiliary agent is a substance which has a surface activity effect on the fluorine-containing polymer. The structure endows the epsilon-CL-20 with hydrophobicity and a function of isolating liquid energetic components, the solubility of the epsilon-CL-20 is effectively reduced, meanwhile, the surface action between the epsilon-CL-20 and other components in a composite energetic material system is small due to low surface tension, the viscosity of the composite energetic material system is reduced, and the manufacturability is improved.
Owner:BEIJING INST OF TECH

A multi-lip seal ring for a plunger rod assembly and a plunger pump

A multi-lip seal ring and a plunger pump for a plunger rod assembly, which relates to the technical field of seal rings. The plunger rod assembly includes: a plunger rod and a plunger seat, and the multi-lip seal ring includes: a seal ring inner sleeve, a seal ring outer sleeve and an elastic member; the seal ring inner sleeve is sleeved on the plunger rod and assembled with the plunger rod for sliding sealing, the seal ring inner sleeve is used to increase the sealing length between the plunger rod and store the wear debris generated when the plunger rod and the seal ring inner sleeve slide relative to each other; the seal ring outer sleeve is sleeved on the seal ring inner sleeve to protect the seal ring inner sleeve; the elastic member is arranged between the seal ring inner sleeve and the seal ring outer sleeve, and the elastic member is close to the side of the plunger seat, and the elastic member is used to lock the seal ring inner sleeve on the side close to the plunger seat to play a sealing role. The multi-lip seal ring adopting the above technical solution has the advantages of large sealing section area, good sealing effect, long service life, simple and ingenious structure.
Owner:SHENZHEN YISI PRECISE HARDWARE CO LTD