27results about How to "Smooth preparation process" patented technology

The invention belongs to the technical field of ceramic materials, and discloses a wave-transparent bulletproof ceramic material and a preparation method thereof. The ceramic material comprises the following components in parts by weight: 60-80 parts of alumina micro powder, 20-40 parts of silicon nitride powder, magnesium carbonate powder, lanthanum oxide powder, a polyethylene glycol dispersant, a temporary binder emulsified paraffin and glycerol. The preparation method comprises the following steps: mixing and stirring the raw materials, and fully pulping; grinding and dispersing the slurry through a high-speed grinder; carrying out spray granulation on the slurry by adopting a centrifugal spray granulation tower, and preparing the slurry into composite granulation powder; pressing the granulation powder into a required shape to obtain a green body; and a high-temperature nitrogen gas pressure sintering furnace is adopted for product sintering. The bulletproof ceramic disclosed by the invention has the advantages of low dielectric constant, high toughness and high hardness, and normal communication signal transmission is not influenced while the bulletproof ceramic has excellent protection performance.

The invention relates to a system and a method for producing polyvinyl chloride, and belongs to the field of polyvinyl chloride production. According to the material transportation direction, the system comprises a storage configuration unit, a polymerization steam stripping unit, a vinyl chloride recovery unit, a polyvinyl chloride drying and packaging unit and a wastewater treatment unit, the polymerization stripping unit comprises a polymerization kettle, a kettle top condenser, a discharge tank, a stripping tower storage tank, a polymerization heat exchanger, a stripping tower, a stripping tower condenser and a mixing tank, and the wastewater treatment unit comprises a condensation separator, a water storage tank, a wastewater heat exchanger, a wastewater stripping tower, a wastewater stripping tower condenser and a pretreatment reactor. The kettle top condenser is arranged in the polymerization steam stripping unit, vinyl chloride generated in each link in the system is recycled, meanwhile, residual wastewater in the wastewater treatment unit is treated by using the pretreatment reactor to remove pollutants and then discharged, the vinyl chloride is recycled in the wastewater treatment process, and the wastewater treatment efficiency is improved. And the consumption of vinyl chloride is reduced.

The invention provides an oiling agent for carbon fibers as well as a preparation method and application thereof, the oiling agent comprises an amino modified silicone oil emulsion and an epoxy modified silicone oil emulsion, and the mass ratio of the amino modified silicone oil emulsion to the epoxy modified silicone oil emulsion is 1: (0.5-1.5); the amino modified silicone oil and the epoxy group-containing modified silicone oil are comb-shaped in structure, main chains of the amino modified silicone oil and the epoxy group-containing modified silicone oil are acrylate polymers, and branch chains of the amino modified silicone oil and the epoxy group-containing modified silicone oil are amino short silane chains or epoxy group-containing short silane chains; the preparation method of the oiling agent comprises the following steps: firstly, preparing an acrylate prepolymer by a solvent polymerization method, then respectively preparing amino modified silicone oil and epoxy group-containing modified silicone oil, and finally respectively carrying out water emulsification. The acrylate polymer is introduced into the oiling agent provided by the invention, so that the silicon content is reduced, the viscosity of the oiling agent is reduced, carbon fibers are conveniently oiled, a protective film is formed on the fibers, friction and abrasion between the fibers are prevented, and the surface defects of the carbon fibers are reduced.

The invention relates to the field of lithium ion battery adhesives, in particular to a PVDF adhesive power improving accelerant and a preparation method thereof. The accelerant comprises modified polyacrylonitrile, modified polyimide and a high-efficiency solvent, the mass ratio of the modified polyacrylonitrile to the modified polyimide is 1: (0.2-2), and the high-efficiency solvent is selected from at least one of N, N-dimethylacetamide, N-methyl pyrrolidone and N, N-dimethylformamide. According to the accelerant prepared by the invention, the advantages of modified polyacrylonitrile (PAN) and modified polyimide (PI) are ingeniously combined, through scientific proportioning and a compounding technology, the adhesive force to PVDF is remarkably improved, meanwhile, the dosage of PVDF in a lithium ion battery is effectively reduced, and the energy density and the cycling stability of the battery are further improved.

The invention belongs to the technical field of veterinary drugs, relates to a veterinary albendazole tablet, and provides a preparation method of the preparation. The tablet consists of albendazole, trehalose, sodium taurocholate and other pharmaceutically acceptable adhesives, disintegrating agents and lubricating agents. The albendazole is fully dispersed by spray-drying a mixed solution of albendazole, trehalose and sodium taurocholate, and the dosage of trehalose and sodium taurocholate is controlled, so that the dissolution and stability of the product are improved.

This invention provides an open-type internal extrusion forming die and a forming process for large-size blind hole shells, including a die cavity, a forming punch, and an extrusion punch. A laterally movable inner die is provided on the die cavity, and an ejector rod is provided on the inner die. The die cavity and the inner die cavity together form a workpiece cavity with a variable shape. The inner die has a vertically arranged first chamber and a second chamber, both of which can connect with the die cavity. The process steps include: pulling the pressure block upwards so that the distance between the two clamping plates is greater than the outer diameter of the blank; feeding the blank from the top of the die cavity; controlling the forming punch to move downwards until the blank fills the workpiece cavity under the action of the forming punch; controlling the forming punch to return; controlling the ejector rod to move upwards until the top flange of the preform is above the clamping plates. This invention can not only smoothly and quickly produce large-size blind hole shells, but also significantly reduce the end allowance of the blank required during the forming process.

The application discloses an ultrahigh-molecular-weight polyethylene silicon nano wear-resistant composite pipe and a preparation method thereof, and relates to the technical field of ultrahigh-molecular-weight polyethylene composite pipes. The ultrahigh-molecular-weight polyethylene silicon nano wear-resistant composite pipe is prepared from the following raw materials in parts by mass: 70-85 parts of ultrahigh-molecular-weight polyethylene, 5-15 parts of silicon nano particles, 3-6 parts of maleic anhydride grafted polyethylene, 0.1-1.2 parts of a silane coupling agent, 1-3 parts of a wear-resistant reinforcing agent, 0.3-1.5 parts of a lubricant and 0.3-1 part of an antioxidant. The surface of the silicon nano particles is modified by using a specific silane coupling agent, and the silicon nano particles are effectively combined with the ultrahigh-molecular-weight polyethylene matrix, so that the dispersibility of the nano particles in the polymer matrix is solved, and the wear resistance and the mechanical properties of the pipe are remarkably improved.

This invention discloses an apparatus and method for preparing composite thin films for solar cells. The apparatus includes a lower conveying mechanism, a middle coating mechanism, and an upper adsorption mechanism. A friction mechanism generates static electricity on the surface of a lifting slide to adsorb the thin film. A cutting blade cuts the film to be processed, which is then transferred to the lifting slide surface by a film suction cup. An internal electric cylinder pushes the film off and onto a conveyor belt for automatic unloading. The method includes: electrostatic preparation, lifting slide resetting, film cutting, film adsorption and transfer, film unloading and conveying, and end clamping preparation. This invention achieves automatic cutting, electrostatic adsorption, transfer and bonding, and continuous conveying of the thin film through an integrated design, improving the efficiency and positioning accuracy of thin film composite preparation, and is suitable for the automated production of solar cell materials.

The invention relates to the technical field of live broadcast cabins, and particularly discloses a digital human live broadcast cabin, which comprises a live broadcast cabin body and a protective screen shell, the protective screen shell is used for accommodating a green screen body, the protective screen shell is detachably arranged at the top end of the inner side of the live broadcast cabin body through a roof-contacted fixed frame, and a winding roller is rotatably arranged on the inner side of the protective screen shell. The green curtain body is fixedly arranged on the outer side of the winding roller, through the arrangement of the curtain stroking assembly, when the green curtain body is in a descending state, an anti-wrinkling stroking plate in the curtain stroking assembly can move along with the moving force of the green curtain body to prevent the green curtain body from being clamped, and when the green curtain body ascends to be recycled, the anti-wrinkling stroking plate is tightly attached to the green curtain body to prevent the green curtain body from being damaged. The anti-wrinkling stroking plate can flatten wrinkles on the green curtain body, and therefore the matting effect and the picture quality are improved.

The invention discloses a seamless chain and a preparation method thereof. The technical problems that in the prior art, the mechanical property of a weld joint is weak, and the fatigue life is short are solved. The preparation method comprises the steps that a chain ring piece is obtained, the chain ring piece is an integrated chain ring, or the chain ring piece is a semi-finished chain with at least two integrated chain rings; metal powder is used as a raw material, laser energy deposition is carried out in the direction from bottom to top, and a first half ring with an upward opening is obtained; and the chain ring piece is nested with the first semi-ring through the opening of the first semi-ring, laser energy deposition continues until a second semi-ring is formed, and a finished chain is obtained. In the seamless chain preparation method provided by the invention, each chain ring is an integrated chain ring, so that weak points are avoided, and the fatigue life is long.

The invention relates to the field of brake composite materials, in particular to a copper-iron-based brake composite material and a preparation method thereof.The composite material comprises, by weight, 10-60 parts of a metal base material, 1-30 parts of a lubricating material and 1-10 parts of a reinforcing material; the metal base material comprises copper powder, iron powder and aluminum powder in a mass ratio of 5: 5: 1; the lubricating material comprises one or more of graphite, molybdenum disulfide, hexagonal boron nitride and polytetrafluoroethylene; the reinforcing material comprises one or more of aluminum oxide, silicon carbide, tungsten carbide, carbon fiber and glass fiber. Grinding, stirring, drying and extrusion forming mechanisms are integrated in the same equipment, and continuous and automatic operation of material grinding, drying and purging is achieved; the technological process is simplified, the equipment occupied space and the manual operation cost are reduced, and therefore the production efficiency and economic benefits are improved.

The present invention relates to a method for preparing CsPbI in a high humidity environment 3 The invention relates to a method and application of a perovskite film and a highly efficient perovskite solar cell, belonging to the field of optoelectronic materials and devices. 3 The film was prepared by using a hot spin coating technique to spin-coat a precursor solution with methylamine acetate as a solvent onto an FTO conductive substrate that already had an electron transport layer. After gradient annealing, a dense and uniform perovskite film was prepared. The entire process was completed in air with a relative humidity of 40%-80%. Subsequently, an interface modification layer and Spiro-OMeTAD were spin-coated on the film as a hole transport layer, and then MoO was evaporated using vacuum evaporation technology. 3 The modified layer and metal electrode are used to complete the device preparation. 3 All-inorganic perovskite solar cells have excellent photoelectric conversion efficiency.

This invention discloses a method for preparing Zr-2.5Nb alloy by hot-pressing sintering coarse-grained pre-alloyed spherical powder below the β phase transformation temperature. The method includes: 1. Selecting coarse-grained spherical Zr-2.5Nb alloy pre-alloyed powder prepared by the plasma rotating electrode method as raw material; 2. Placing the raw material into a mold and placing it in a hot press furnace under vacuum; 3. Heating to a temperature below the β phase transformation temperature of Zr-2.5Nb alloy and holding at that temperature for hot-pressing sintering; 4. Cooling to room temperature to obtain a dense Zr-2.5Nb alloy. This invention utilizes the characteristics of coarse-grained spherical Zr-2.5Nb alloy pre-alloyed powder—namely, its fine grain structure, crystal defects, and metastable α′ martensitic phase transformation activity—to achieve efficient densification at lower temperatures and suppress grain coarsening, resulting in a Zr-2.5Nb alloy material with uniform structure, high density, and excellent overall performance, suitable for the field of biomedical implants.

The application provides a kind of carotenoid Pickering emulsion microcapsule and its preparation method, belong to food microcapsule preparation technical field.The application uses octenyl succinic acid starch microparticle as the emulsifier of Pickering emulsion, its interface stability relies on the steric hindrance between microparticles, can adapt to high homogeneous pressure processing, so that the emulsion particle size can be further reduced;By pre-dissolving sucrose, malt dextrin and other hydrophilic macromolecules in water, the solubility of octenyl succinic acid starch in water can be effectively reduced, so that the Pickering emulsion can be successfully prepared;By reducing the ratio of crystallization and oil, the shearing time can be shortened;By improving the viscosity of emulsion, the contact time of material and oxygen can be effectively reduced during high-speed shearing and homogenization, so as to improve the crystallization yield and reduce the production cost.

The utility model discloses a microwave digester for water quality detection, which relates to the technical field of microwave digester and comprises a microwave digester main body, a rotating shaft is detachably mounted at the bottom of the inner wall of the microwave digester main body, the top of the rotating shaft is rotatably connected with a turntable base, and two fixing columns are symmetrically and detachably mounted on the periphery of the top of the turntable base. And a fixing ring is detachably mounted at the top of the fixing column. According to the microwave digestion instrument for water quality detection disclosed by the utility model, the arc-shaped elastic sheet pushes the movable rod within the elastic force range of the arc-shaped elastic sheet to drive the pressing plate to clamp test tubes with different sizes, so that the test tubes with different sizes are stably clamped, the application range of the equipment is wider, and the overall practicability is stronger; wheels of the supporting wheels are used as supports for the edge of the rotary table base and roll on the annular base along with rotation of the rotary table base, and the rotary table base rotates more stably, so that a sample in a test tube assembled on the rotary table base is more stable during rotary preparation in the equipment.

The invention discloses a tangential double-enhanced gradient bone repair hydrogel material based on a concentric triangular lantern ring structure and a preparation method of the tangential double-enhanced gradient bone repair hydrogel material. Comprising a base and a sleeve, the appearance of the base is circular, and a concentric triangular lantern ring type groove is formed in the inner side of the base and used for being detachably combined with the sleeve for use; (2) respectively preparing methylacryloylated sodium alginate solutions compounded with hydroxyapatite (HA) with different concentrations, and adding a blood vessel promoting drug into the HA solution with low concentration; and (3) preferentially pouring the solution with the high-concentration HA into the innermost side of a mold, carrying out UV curing and freezing demolding, then carrying out circulating pouring and curing from inside to outside according to a sequence that the concentration of the HA is decreased progressively, and finally, carrying out complete UV curing to obtain the required bone repair hydrogel material. The hydrogel material has both compression resistance and bending resistance in the tangential direction by virtue of the concentric triangular lantern ring structure, and meanwhile, shows the functions of initial blood vessel formation and complete-cycle osteogenesis promotion, so that a brand new strategy is provided for bone repair.

The invention discloses a silica gel high-temperature wire, and particularly relates to the technical field of cable processing, and the silica gel high-temperature wire comprises the following raw materials in parts by weight: 85-92 parts of silicone rubber, 3-7 parts of carbon black, 1-3 parts of silicon dioxide, 2-5 parts of silicone, 2-5 parts of rosin, 1-3 parts of microcrystalline wax, 0.3-1.2 parts of a stabilizer and 0.8-1.8 parts of a vulcanizing agent. According to the silica gel high-temperature wire disclosed by the invention, heat-resistant additives such as the carbon black, the silicon dioxide and the silicone are added in an implementation scheme, so that the prepared silica gel high-temperature wire can stably work for a long time in a high-temperature environment and is not easy to age, and the electrical performance of the silica gel high-temperature wire is improved by adding the carbon black and the silicon dioxide; the high-temperature wire can meet the high-performance requirement of the modern industry for wires and cables, through vulcanization treatment, the high-temperature wire can bear large tension and pressure and is not prone to breakage, the processability of the formula is improved through addition of rosin and microcrystalline wax, the preparation process is smoother, and the finished product quality is higher.

The invention provides an assembling, welding and anti-deformation tool for a thin-wall sealed container as well as a manufacturing method and a using method of the assembling, welding and anti-deformation tool, and belongs to the technical field of anti-deformation tools. Welding cushion blocks are arranged at the two ends of two semi-arc plates respectively, radius fine adjustment bolts are arranged on the welding cushion blocks, the two semi-arc plates are connected into a complete circular ring through hexagon nuts and threads of the radius fine adjustment bolts, positioning nuts are evenly arranged along the shapes of the semi-arc plates, and force application bolts are connected with the positioning nuts through threads. According to the welding and anti-deformation tool for the novel thin-wall sealed container, the tool can adapt to cylinders with various diameters by adjusting the initial positions of the bolts, and the manufacturing cost of tools with different models is reduced by adjusting the opposite openings of the end sockets. Eight evenly-distributed inner wall supporting points are provided while roundness correction is conducted, and the distances of the bolts extending out of the semicircular arc plates are controlled to be the same, so that even and powerful annular supporting can be provided to restrain welding deformation.

The invention discloses a forming method for improving the density of a fiber-reinforced ceramic-based composite material, and belongs to the technical field of composite material preparation. According to the method, the specific precursor mixture is selected as an impregnation matrix material and then combined with a high-temperature pressure sintering process, process parameters of different composite stages are regulated and controlled, the problem that a matrix formed by cracking of polyborosilazane in an existing process is non-uniform in distribution is solved to the maximum extent, internal defects of the material are reduced, and the performance of the material is improved. The non-uniform degree and the density of the composite material are greatly improved, and the damage degree to the fibers is reduced by reducing the number of compounding times, so that the fibers can exert better reinforcing and toughening effects, the tensile property, the bending property and other mechanical properties of the composite material are effectively improved, and finally the high-performance silicon-boron-nitrogen fiber reinforced silicon-boron-nitrogen composite material can be obtained.

This invention discloses a novel use of Artemisia annua seeds, a medicinal and edible compound composition for relieving hangovers and protecting the liver, chewable tablets, and their preparation process. This invention is the first to discover that the mucilage in Artemisia annua seeds slows down ethanol diffusion through a dual mechanism of physical adsorption and three-dimensional network blockage, thus slowing down the rate of ethanol absorption in the digestive tract, reducing the peak blood plasma concentration, and delaying or prolonging the time of intoxication. Therefore, it can be used in the preparation of health products / functional foods that protect the stomach, prevent intoxication, and delay alcohol absorption. Based on this discovery, this invention provides a medicinal and edible compound composition for relieving hangovers and protecting the liver, composed of 10-15 parts by weight of Pueraria lobata, 10-15 parts by weight of Hovenia dulcis, 8-10 parts by weight of Lilium brownii, 4-8 parts by weight of Poria cocos, 4-8 parts by weight of Dioscorea opposita, and 4-8 parts by weight of Artemisia annua seeds. Furthermore, to balance rapid effectiveness and compliance, it is formulated as a chewable tablet. This chewable tablet can significantly prolong the time of intoxication and shorten the sobering-up time, and is significantly superior to the group lacking Artemisia annua seeds in terms of antioxidant indicators (SOD, GSH, MDA) and hangover relief effect.

The invention relates to a novel top cover assembly manufacturing method and a related product thereof. The requirements of modern batteries for high integration level, high reliability and low cost are met. The manufacturing process is simplified and the manufacturing cost is reduced by adopting the injection molding integrated technology, the explosion-proof structure is formed on the top cover plate in a nicking mode, and the safety and the reliability of the product are improved. In the manufacturing process, firstly, the pole terminal is connected with the top cover plate, the welding piece is welded to the inner welding face of the pole terminal, a current transmission path is optimized, the connection firmness is enhanced, an injection molding space is constructed among the pole terminal, the top cover plate and the welding piece, a thermoplastic material is injected to form an injection molding sealing piece, and all the assemblies are tightly connected. The first through hole and the second through hole are designed in the welding piece and are aligned with the liquid injection hole in the top cover plate, so that liquid can be efficiently and safely injected into the battery cell. And meanwhile, the injection molding efficiency and the product quality are guaranteed by optimizing the flowing path of the injection molding material.

The utility model relates to the technical field of reagent preparation devices, in particular to an absorbent formula preparation device which comprises a reaction mechanism, a temperature control mechanism, a water supply mechanism and a conveying mechanism, the reaction mechanism comprises a reaction container and a stirring structure arranged at the top of the reaction container, and an output port of the water supply mechanism is located above the reaction container; the temperature control mechanism comprises a temperature measuring part and a heat exchange part, the heat exchange part is arranged at the bottom of the reaction container, and the temperature measuring part is arranged in the reaction container; the conveying mechanism comprises a solid conveying mechanism used for conveying solid raw materials and a liquid conveying mechanism used for conveying liquid solvents. The automatic continuous production system comprises a preparation device, a monitoring mechanism and a centralized control box, the monitoring mechanism is used for monitoring internal parameters of the reaction container, and the centralized control box is used for receiving data signals of the monitoring mechanism and controlling the temperature, the stirring rate and the reagent density in the preparation device according to the data signals. By implementing the scheme, the preparation quality and yield of the absorbent can be effectively improved.

The utility model relates to the technical field of collision brakes, in particular to a side collision brake for a vehicle. According to the technical scheme, the side collision brake for the vehicle comprises an upper connecting plate, a metal shell, lower connecting plates and rubber strips, the metal shell is filled with the rubber strips, splicing plates are arranged at openings of the metal shell, the lower connecting plates are fixed to the openings of the two sides of the metal shell through the splicing plates, and the upper connecting plates are connected with the lower connecting plates through the splicing plates. A connecting block is welded to the lower connecting plate, an upper connecting plate is welded to the lower connecting plate through the connecting block, and a protruding block is welded to the surface of the side, away from the connecting block, of the lower connecting plate. The utility model provides the best protection and performance under the condition of side collision.

The invention discloses a high-strength nano composite screw material based on a concentric fiber cylinder structure and a preparation method of the high-strength nano composite screw material. The method specifically comprises the following steps: 1) firstly weaving PLGA fiber cylinder materials with different diameter gradients; 2) mineralizing hydroxyapatite on the surface of graphene oxide by using an in-situ mineralization process to obtain a GO / HA nano filler, preparing an alkali-soluble chitosan / cellulose mixed solution compounded with GO / HA by using a freezing-blasting method, and performing low-speed centrifugal defoaming; (3) concentrically sleeving and fixing a fiber cylinder in an open cylinder mold, pouring the solution in a wall-attached manner, and transferring the fiber cylinder and the mold to a temperature of 60-80 DEG C for in-situ gelation; and 4) after dialysis, transferring into a rotary drying device for drying and dewatering, and turning according to a drawing to obtain the required high-strength nano composite screw material. According to the screw material, the GO / HA filler with high dispersity is compounded, the concentric fiber cylinder structure is enhanced, meanwhile, HA can promote osteogenesis, and the requirements for screw strength and biological activity are met.

The present invention relates to the technical field of honeycomb aluminum panels, and specifically discloses a fireproof rock aluminum honeycomb panel, comprising a rock panel as a whole, wherein the rock panel as a whole is formed by splicing a plurality of groups of first splicing panels and second splicing panels up and down and then gluing them to a group of marble panels; the first splicing panel comprises a first back panel, a first honeycomb net is gluing to the front end outer surface of the first back panel, and a first panel is gluing to the front end of the first honeycomb net; a plurality of groups of first splicing panels and second splicing panels are spliced ​​with each other, and embedded nuts are sleeved on the back of the second splicing panels to achieve modular assembly, and finally the panels are combined with the marble panels by glue, and compared with the existing rock panel as a whole, the production steps can be carried out separately, and the production will be smoother; by providing a connecting groove on the surface of the second panel, when the receiving sleeve is hammered by external equipment and sinks into the surface of the second panel, more glue can be retained to fix the receiving sleeve and the threaded sleeve, thereby increasing the stability of the embedded nut sleeve.

The invention discloses a low-cost preparation method of a high-temperature titanium alloy bar, the titanium alloy comprises the following components by mass content: 8.0%-10.5% of Al, 1.0%-2.5% of Zr, 0.5%-1.0% of Nb, 0.1%-0.5% of Mo, 0.1%-0.45% of Si, 0.15%-0.25% of O, less than or equal to 0.15% of C, and the balance of Ti and inevitable impurities, the method comprises the following steps: 1, ingot casting smelting; 2, forging and coping the cast ingot; 3, performing radial forging on the bar billet; and 4, bar billet heat treatment and machining. According to the invention, the composition of titanium alloy components is designed, one-heating-number blooming forging is combined with a multi-heating-number radial forging process, and process parameters such as deformation temperature, deformation and the like and a production flow are controlled, so that the titanium alloy bar with high-strength room-temperature mechanical property and good high-temperature property is obtained; the material is suitable for high-temperature fields such as aerospace engine parts, aircraft structural parts and fasteners.