458results about How to "High viscosity" patented technology

A nozzle embedded type 3D printing device for a thermosetting wood-plastic composite material belongs to the technical field of 3D printing, and comprises a rack, and an extrusion movement mechanism, a powder laying mechanism, a powder bed mechanism, a printing platform movement mechanism and a binder feeding system which are arranged on the rack, and the extrusion movement mechanism is fed through the feeding system. The printing efficiency of existing printing equipment can be improved, the manufacturing and maintenance cost of the existing equipment is reduced, the accuracy and consistency of a printing structure are ensured, and printing of a high-precision complex structure is achieved; the provided equipment combines the advantages of extrusion type printing equipment and a powder bed structure, the requirement of single extrusion printing for the formability of extruded materials is met, controllable printing of large-flow, high-viscosity and large-layer-thickness printing shapes and precision is achieved, the equipment is suitable for various types of binder materials, the variety and size range of powder bed materials is large, and the equipment is suitable for large-flow, high-viscosity and large-layer-thickness printing. And the rapid part forming machining requirements of wide material application range, large forming size and high part strength are met.

The invention discloses an ionic liquid modified polyimide nanofiber film and an air purification filter screen based on the ionic liquid modified polyimide nanofiber film, and belongs to the technical field of film filtering materials. The preparation method comprises the following steps: firstly, selecting a diamine monomer and a dianhydride monomer to carry out low-temperature polycondensation reaction, and then carrying out solvent replacement and freeze drying to obtain polyamide acid powder; dissolving the powder to obtain a polyamide acid spinning solution, preparing an ionic liquid / polyamide acid spinning solution on the basis, and carrying out electrostatic spinning to obtain an ionic liquid / polyamide acid nanofiber membrane; and finally, carrying out high-temperature thermal imidization treatment to prepare the ionic liquid / polyimide nanofiber membrane. The method is simple and efficient, the problems of low resistance, high pressure drop and the like of a traditional nanofiber film in air filtration are solved, development and application of the nanofiber film in the field of air filtration are further widened, and the nanofiber film has important scientific significance and application value in the fields of high-temperature filtration, gas adsorption and the like.

The invention discloses injectable hydrogel for eye drug sustained release and a preparation method and application thereof.The method comprises the steps that a NaIO4 solution is dropwise added into a hyaluronic acid solution, after the reaction is conducted in a dark place at the room temperature, ethylene glycol is added for continuous reaction, and formylated hyaluronic acid is prepared; the preparation method comprises the following steps: adding adipic dihydrazide into a carboxymethyl cellulose solution, uniformly stirring at room temperature, adding 1-hydroxybenzotriazole and 1-ethyl-(3-dimethylaminopropyl) carbodiimide hydrochloride, and stirring to react, so as to prepare aminated carboxymethyl cellulose; and mixing the PBS solution of aminated carboxymethyl cellulose with the PBS solution of formylated hyaluronic acid, uniformly stirring, adding a to-be-carried drug and a FeCl3 solution, and carrying out a reaction to prepare the injectable hydrogel for sustained release of the eye drug. The hydrogel is convenient to use and high in gelation rate, effectively realizes controllable release of drugs, and has a wide application prospect in the field of biological medicines.

The invention relates to the technical field of organic silicon pouring sealants, and discloses a high-thermal-conductivity low-viscosity organic silicon pouring sealant and a preparation method thereof, and the sealant comprises the following raw materials by weight: 80-90 parts of alpha, omega-dihydroxy polydiethylsiloxane; 4 to 8 parts of polyphenyl siloxane; 100 to 120 parts of spherical aluminum nitride; 3 to 7 parts of epoxy butyl oleate; 0.8 to 1.2 parts of organic bentonite; 0.5 to 0.9 part of a titanate coupling agent; 0.8 to 0.9 part of dibutyltin dibutyrate; 0.15 to 0.20 part of dibutyltin oxide; 0.08 to 0.15 part of phosphotriester; the titanate coupling agent, the tris (2, 3-dibromopropyl) phosphate and the graphite powder are introduced into the raw materials, the graphite powder is subjected to surface modification treatment in the pretreatment stage, and the modified graphite powder is more firmly combined with a sealing compound matrix, so that the sealing compound can still keep stable performance at an extreme temperature; by integrating the respective characteristics of the raw materials, the sealing compound finished product disclosed by the invention has the advantage of high heat-conducting property while having low viscosity.

The invention provides a succinic acid composition as well as polyester and a polyester composite material prepared from the succinic acid composition. The succinic acid composition comprises succinic acid, a compound containing sulfate radicals and a phosphorus compound, the mass content of sulfate radicals in the succinic acid composition is 240 to 500 ppm; the mass content of the phosphorus element in the succinic acid composition is 0.5 to 40 ppm. According to the present invention, by compounding the sulfate radical-containing compound and the phosphorus compound with the specific content, the polyester is prepared by using the succinic acid composition as the raw material, such that the production efficiency of the polyester can be ensured, the polyester with characteristics of low acid value and high viscosity can be obtained, and the corrosion of the polyester or the composition thereof on the metal equipment can be reduced during the polyester composite material extrusion process; the quality of the polyester composite material is ensured.

The invention relates to the field of layered interior ceiling processing, and particularly discloses an environment-friendly automobile interior ceiling and a preparation method thereof.The environment-friendly automobile interior ceiling sequentially comprises base cloth, glue-coated PET fiber felt, base cloth, an adhesive and a surface decoration layer from bottom to top; the base cloth is made of any one of non-woven fabric, film-coated non-woven fabric or film-coated non-woven fabric; the preparation method comprises the following steps: coating polyurethane glue on the upper surface and the lower surface of the PET fiber felt to obtain a glue-coated PET fiber felt; spraying water to the glue-coated PET fiber felt, then attaching the glue-coated PET fiber felt to the base cloth, then carrying out hot press molding for 40-120s at the temperature of 100-140 DEG C, and cooling to obtain a semi-finished product; an adhesive is sprayed on the semi-finished product, a surface decoration layer is laid on the semi-finished product, hot pressing is conducted for 20-100 s at the temperature of 90-120 DEG C, after cooling, cutting, edge covering and aftertreatment are conducted, and a finished product is obtained. The method has the advantages of environmental protection, no pollution in the production process, no influence on human health of a user, facilitation of recovery and long service life.

The invention discloses a translation system based on artificial intelligence, intelligent glasses for translation and a translation method. The translation system comprises first intelligent glasses, a first intelligent mobile terminal and a cloud server, and a generative artificial intelligence large language model is configured in the cloud server. The first intelligent glasses pick up a first voice of a first language from a preset direction and send the first voice to the first intelligent mobile terminal. The first intelligent mobile terminal converts the first voice into a first text and sends the first text to the cloud server; and the cloud server translates the first text through the model according to the translation prompt to obtain a second text of a second language and sends the second text to the first intelligent mobile terminal. And the first intelligent mobile terminal converts the second text into a second voice and sends the second voice to the first intelligent glasses for playing. According to the invention, high-precision intelligent translation based on the intelligent glasses is realized, and the product viscosity can be increased.

The invention discloses a chlorosulfonated polyethylene glove and a preparation method thereof.The chlorosulfonated polyethylene glove comprises at least one functional structure layer, and the functional structure layer is formed by adhering liquid raw materials on the surface of a shaping base layer by layer and curing the liquid raw materials; wherein the functional structure layer is any one of a gas-liquid isolating layer, an aging reinforcing layer and an anti-radiation layer. According to the chlorosulfonated polyethylene glove, any one or more than two of the gas-liquid isolating layer, the aging reinforcing layer and the anti-radiation layer are used as the functional layer, and the chlorosulfonated polyethylene glove with a specific function is formed through multi-layer compounding of an impregnation process, so that the chlorosulfonated polyethylene glove has air tightness, chemical resistance, radiation resistance, aging resistance, puncture resistance, wear resistance and the like; a long-acting gas / liquid isolation effect can be realized; meanwhile, the material types of the functional layers are various, and the layer number and the combination sequence of the functional layers can be reasonably selected and matched according to application requirements.

The invention discloses a zero-defect load wave-absorbing material and a preparation method thereof, and belongs to the field of electromagnetic wave absorbing materials. The method comprises the following steps: mixing a wave absorbing agent and an adhesive, and fully stirring to obtain high-viscosity electromagnetic slurry; a forming mold is filled with the high-viscosity electromagnetic slurry, a three-dimensional vibration table is adopted for eliminating internal defects of the slurry, then the slurry is placed in a vacuum oven for secondary defect elimination, finally, the treated slurry is cured and formed in the mold, and the zero-defect load wave-absorbing material is obtained. The defects in the slurry are eliminated in a vibration and vacuum mode, and the zero-defect load wave-absorbing material is prepared.

The invention relates to the technical field of thickening agents, in particular to a thickening agent for fracturing fluid and a preparation method of the thickening agent, the thickening agent comprises a liquid material and a solid material, the mass ratio of the liquid material to the solid material is 1: (2.2-2.4), and the liquid material is composed of deionized water and N-methyl pyrrolidone. According to the preparation method disclosed by the invention, the konjaku flour is added in the preparation of the thickening agent, and after the konjaku flour is subjected to mixing reaction and curing treatment, amino functional groups in konjaku molecules can be subjected to cross-linking reaction with aldehyde groups of glutaraldehyde, so that water molecules are wrapped in a cross-linked network structure, and the internal friction force during fluid flowing is increased; and hydroxyl groups on molecular chains of the konjac glucomannan and aldehyde groups of glutaraldehyde are subjected to a condensation reaction to form covalent bonds, so that a cross-linking effect is achieved, a stable chemical cross-linked network structure is formed among the molecular chains of the konjac glucomannan, and the cross-linking performance of the thickening agent is effectively improved.

The invention discloses a preparation method of alkyl modified silicone oil single-phase immersed coolant and application of the alkyl modified silicone oil single-phase immersed coolant in data center cooling, and belongs to the technical field of coolants.The preparation method comprises the steps that firstly, long-chain alpha olefin is used for modifying tetramethylcyclotetrasiloxane to obtain long-chain alkyl tetramethylcyclotetrasiloxane; then, long-chain alkyl tetramethyl cyclotetrasiloxane and octamethyl cyclotetrasiloxane serve as monomers, modified double-long-chain alkyl tetramethyl disiloxane serves as an end-capping reagent, copolymerization is conducted, and the long-chain alkyl end-capped single-long-chain alkyl monomethyl siloxane / dimethyl siloxane copolymer is obtained. By adopting the method disclosed by the invention, a copolymer product with relatively low steric hindrance can be prepared, a side chain alkyl group and a polymer structure can be accurately regulated and controlled, silicon-hydrogen bonds and olefin are not remained in the obtained product, and the product can be used as a single-phase cooling liquid of an immersed liquid cooling system of a data center to be applied to immersed cooling of the data center and has a wide application prospect.

The invention provides positive conductive paste, a positive plate and a lithium ion battery. The positive electrode conductive paste comprises a solid and a solvent, and the positive electrode conductive paste comprises the following components in percentage by mass of the solid: 0.02%-0.05% of a single-walled carbon nanotube, 0.3%-0.7% of a carbon black conductive agent, 0.1%-0.5% of a softening agent, 0.1%-0.5% of a dispersing and anti-cracking integrated auxiliary agent, 96%-98% of a positive electrode active material and 1%-2.25% of a binder. By adding the single-walled carbon nanotubes, the conductivity and mechanical properties of the positive electrode conductive paste are improved. And the softening agent improves the rheological property of the positive electrode conductive paste and enhances the flexibility of the pole piece at the same time. And the dispersing and anti-cracking integrated auxiliary agent effectively disperses positive electrode active material particles and prevents coating and baking cracking. The high solid content achieved under the cooperative work of the three is beneficial to solving the problems of brittle failure, low coating rate, easy cracking of the pole piece and the like of the thick pole piece.

The invention discloses high-viscosity and high-elasticity modified asphalt and an asphalt composition, belongs to the field of asphalt, and solves the technical problem that the existing asphalt material lacks high-viscosity and high-elasticity modified asphalt suitable for diversified climates. The high-viscosity and high-elasticity modified asphalt suitable for diversified climates is prepared from the following raw materials in parts by mass: 100 parts of road petroleum asphalt, 2.5-4 parts of an epoxidized modified styrene-butadiene-styrene block copolymer, 5-10 parts of a hyperbranched polyester modified styrene-isoprene-styrene block copolymer, 5-10 parts of tackifying resin, 1-3 parts of a coupling agent, 1-3 parts of a coupling agent, 1-3 parts of a coupling agent, 1-3 parts of an antioxidant and 1-3 parts of a lubricant. The modified asphalt is prepared from, by weight, 1-2 parts of rubber powder, 1-2 parts of oleamide, 2-3 parts of bagasse fibers and 2-10 parts of other functional auxiliaries. The modified asphalt has the advantages of being high in viscosity and elasticity, suitable for various climates and the like.

The invention relates to the technical field of thermal insulation coatings, and discloses a preparation process of a nanopore aerogel thermal insulation coating, which comprises the following steps: S1, preparing materials: 10-15 parts of modified silicon dioxide aerogel, 2-8 parts of deionized water, 3-6 parts of absolute ethyl alcohol, 8-12 parts of a catalyst, 5-7 parts of an n-hexane solvent, 2-6 parts of a dispersing agent and 2-4 parts of a defoaming agent. According to the preparation method, structural collapse of the silicon dioxide aerogel in the application process can be avoided, the heat insulation and heat preservation performance and mechanical performance of the aerogel heat insulation and heat preservation coating are remarkably improved, the heat insulation and heat preservation performance and mechanical performance of the aerogel heat insulation and heat preservation coating can be further improved, and the adhesion capacity of the coating is further improved.

According to the photopolymer system based on the fluorine-containing liquid crystal, the grating device and the preparation method of the grating device, the mixed liquid crystal containing the nematic liquid crystal and the fluorine-containing liquid crystal at the same time is adopted in the photopolymer system, and therefore the polarity and dielectric anisotropy of the mixed liquid crystal material are improved; the overall electro-optical performance, uniformity and stability of the photopolymer system are improved, so that a grating device prepared based on the photopolymer system has good optical characteristics of low haze while having relatively high diffraction efficiency. Specifically, fluorine-containing biphenyl liquid crystals, fluorine-containing alkyne liquid crystals and fluorine-containing difluoromethoxy liquid crystals of which the carbon atoms of flexible side chains are 2-5, and nematic liquid crystals of which the delta epsilon is not less than 10 are selected to jointly form mixed liquid crystals; and the balance and optimization between the diffraction efficiency and haze performance of the photopolymer system and the grating device prepared from the photopolymer system are realized.

The invention provides secondary modified silica sol and a preparation method and application thereof.The secondary modified silica sol is prepared from silica sol, a primary modified component, a secondary modified component and water, the primary modified component comprises mPEG5K-silane and poloxamer 188, and the secondary modified component comprises waterborne acrylic emulsion and span 80; the specific raw materials are adopted to carry out secondary modification on the silica sol, so that the obtained secondary modified silica sol is large in viscosity and high in adhesion, the casting back layer slurry containing the secondary modified silica sol is high in wet strength, the collapsibility of an investment casting back layer is improved, the residual strength of a shell is reduced, the quick-drying effect is strong, and the service life of the casting back layer slurry is prolonged. And in the subsequent sand cleaning process, the shell can be vibrated quickly, the residual sand powder is extremely little, the quality and performance of the material are effectively kept, the surface quality of the casting is good, the production efficiency is greatly improved, and the manufacturing cost is saved.

The invention discloses a springback inhibitor for sprayed concrete as well as a preparation method and application of the springback inhibitor. The rebound inhibitor is prepared from the following components in percentage by mass: 2-5% of magnesium aluminum silicate, 19.8-29.8% of silica fume, 1-4% of a macromolecular tackifier, 2-5% of aluminum sulfate slag powder, 38-51% of superfine stone powder, 9-16% of fly ash microspheres, 1-2% of a water reducing agent, 2-3% of redispersible milk powder, 2-5% of inorganic mineral fibers and 0.01-0.2% of modified plant fibers. The springback inhibitor disclosed by the invention has a remarkable effect on reducing the springback rate of the sprayed concrete, and can enhance the water dispersibility resistance of the sprayed concrete and improve the cohesiveness of the sprayed concrete. The preparation method disclosed by the invention is simple in industry and easy for large-scale production.

The invention belongs to the technical field of feed production, and discloses low-viscosity fermented enzymatic soybean meal and a preparation method thereof. The preparation method comprises: adding puffed soybeans to soybean meal as a hydrolysis raw material, wherein the mass proportion of puffed soybeans in the hydrolysis raw material is 10-30%; mixing the hydrolysis raw material with hot water according to a mass ratio of 1: (0.25-0.35), adding lipase of 1-3% of the mass of the hydrolysis raw material, and hydrolyzing at 35-45°C for 12-36h to obtain a hydrolyzed material; after the hydrolyzed material is sheared and emulsified, the water content of the hydrolyzed material is adjusted to 35-50%, and fermentation and enzymolysis are performed after inoculating a bacterial enzyme complex; the lipase is lipase A or a complex of lipase A and other lipases in a mass ratio of 1: 1. The fluidity and sensory viscosity of the fermented enzymatic soybean meal obtained by the present invention are significantly improved, the production and application efficiency is improved by 60%, and it has a fermented acid aroma, and also produces an animal-friendly meaty flavor. After being applied to feed, the diarrhea rate of suckling pigs is reduced by 65%, the feed intake is increased by 20%, and the feed-to-meat ratio is reduced by 8%.

The invention relates to the technical field of chemical equipment, in particular to an efficient reaction kettle for sodium carboxymethyl cellulose production, which comprises a kettle body, a stirring motor is mounted at the top of the kettle body, a stirring shaft rotationally connected into the kettle body is fixedly arranged on an output shaft of the stirring motor, stirring blades are fixedly arranged on the outer wall of the stirring shaft, and a stock bin is further mounted at the top of the kettle body. The bottom of the stock bin extends into the kettle body, and a linkage type discharging mechanism connected between the stirring shaft and the stock bin is mounted on the top surface in the kettle body; according to the efficient reaction kettle for sodium carboxymethyl cellulose production, auxiliary materials can be added into materials in multiple times, the reaction rate can be better controlled, too violent or non-uniform reaction is avoided, the stability of the reaction process is ensured, the reaction uniformity and the product quality are further improved, and the production efficiency is improved by adjusting the time interval of adding the auxiliary materials every time. And the characteristics of the final product, such as viscosity, solubility and the like, can be optimized, so that the final product better meets the requirements of specific application.

The invention provides a graphene oxide composite oil-displacing agent and a preparation method and application thereof.The graphene oxide composite oil-displacing agent is prepared from poly (3-hydroxytyramine) and graphene oxide, the poly (3-hydroxytyramine) and the graphene oxide are combined through chemical bonds, the preparation method comprises the steps that hydrochloric acid 3-hydroxytyramine and the graphene oxide are subjected to a mixed reaction, and the graphene oxide composite oil-displacing agent is obtained. The obtained composite oil-displacing agent is applied to tertiary oil recovery. The composite oil displacement agent provided by the invention has excellent hydrophilicity, acid and alkali resistance and salt resistance, can form a stable water-in-oil emulsion with crude oil in a wide pH value range or under high salinity, and can improve the stability and viscosity of the emulsion; the emulsifying effect is strong, the emulsifying swept volume can be enlarged, and the application prospect in medium-low permeability oil reservoirs is wide; the preparation method provided by the invention is simple, convenient and high in practicability.

The invention provides a petroleum-based adhesive for a prebaked anode and a preparation method of the petroleum-based adhesive, and relates to the technical field of prebaked anode production. The preparation method of the petroleum-based adhesive comprises the following steps: mixing residual oil with an activating agent, then heating to carry out a first polymerization reaction, and cooling after the reaction to obtain a modified adhesive; and mixing the obtained modified binder with a fraction obtained after reduced pressure distillation of catalytic slurry oil, heating and melting, sealing, heating, carrying out a second polymerization reaction, and cooling after the reaction to obtain the petroleum-based binder for the prebaked anode. A two-stage thermal polymerization method is adopted, the first stage is a medium and low temperature thermal polymerization method, small molecules in residual oil are subjected to medium and low temperature thermal polymerization modification, and the carbon residue rate of asphalt can be increased; the second-stage thermal polymerization mainly enables part of unreacted groups of the first-stage modified adhesive to continue to be subjected to thermal polymerization reaction with the treated catalytic slurry oil at high temperature, and the high-residual-carbon low-viscosity adhesive coal pitch for the prebaked anode is obtained.

The invention discloses a bone cement composite material with collapse resistance and a preparation method thereof, and belongs to the technical field of biomedical materials. The composite material comprises a solid phase part and a liquid phase part, the liquid phase part and the solid phase part are mixed according to the liquid-solid ratio of 0.35 mL / g to 0.6 mL / g; the solid phase part is composed of calcium sulfate powder and calcium phosphate powder, and the mass ratio of the calcium sulfate powder to the calcium phosphate powder is 85: 15; the liquid phase part is selected from carboxymethyl chitosan or a combination of carboxymethyl chitosan and sodium alginate. The bone cement composite material prepared by the preparation method disclosed by the invention has good biocompatibility; due to a gel network formed by carboxymethyl chitosan and sodium alginate, the compressive strength of the bone cement is remarkably improved, and the collapse resistance and injectable performance are excellent; meanwhile, the bone cement composite material promotes the attachment and proliferation of osteoblasts, and can induce osteogenic differentiation in vitro.

The invention relates to the technical field of food, and particularly provides a preparation method and application of an oyster sauce based on Sanzan gum. The Sanzan gum is used as a raw material for preparing the oyster sauce for the first time, the preparation method of the oyster sauce is optimized, the problems of poor stability and high cost of the oyster sauce can be effectively solved, and meanwhile, the texture characteristics of the oyster sauce are improved. More specifically, in the raw materials of the oyster sauce, the flavoring substances comprise oyster juice, edible salt, white granulated sugar, a yeast extract and sodium glutamate; in the stabilizer of the oyster sauce, the ratio of hydroxypropyl distarch phosphate to Sanzan gum is (1-8): (0.1-0.4). The Sanzan gum endows the oyster sauce with relatively good firmness, viscosity, cohesiveness, viscosity index and taste; moreover, the shelf life is prolonged while the addition amount of the Sanzan glue is small, and the production cost of the oyster sauce can be effectively reduced.

The invention provides hyperbranched polyamide modified polysiloxane, hyperbranched polyamide modified hydrogen-terminated polysiloxane resin, a semi-permanent organic silicon release agent and a preparation method and application of the semi-permanent organic silicon release agent, and belongs to the technical field of release agents. The preparation method of the hyperbranched polyamide modified polysiloxane comprises the following steps: mixing hyperbranched polyamide with 3-hydroxyphenylphosphoryl propionic acid for condensation polymerization to obtain a first intermediate; mixing the first intermediate with lithium alkylide for substitution reaction to obtain a second intermediate; and mixing the second intermediate with siloxane, and carrying out silanization reaction to obtain the hyperbranched polyamide modified polysiloxane. According to the semi-permanent organic silicon release agent, hyperbranched polyamide modified polysiloxane is stable in structure, so that the semi-permanent organic silicon release agent is good in high-temperature resistance and high in cohesive strength, further, transfer of the release agent to the surface of a formed part is reduced, and the precision of the formed part is improved; meanwhile, repeated demolding can be achieved, and working efficiency is high.

The invention belongs to the technical field of battery manufacturing, and particularly discloses a method for rapidly testing the stability of lithium ion battery slurry, which comprises the following steps: adding a solvent into the slurry after slurry mixing, diluting through primary centrifugation, stopping suspension when the suspension appears, and then reducing the rotating speed for secondary centrifugation; and respectively testing and drawing kinetic index TSI curves of the mixed slurry and the slurry subjected to secondary centrifugation, and comparing the two curves to judge the stability of the slurry. The time for judging the stability of the lithium ion battery slurry can be shortened, the operation is simple, and the practicability is high.

The invention relates to the technical field of lubricants, in particular to a low-osmotic-pressure hyaluronic acid lubricant and a preparation method thereof. The low-osmotic-pressure hyaluronic acid lubricant disclosed by the invention is prepared from the following materials in parts by weight: 88.35 to 92.97 parts of purified water, 4 to 6 parts of modified polyvinyl alcohol, 2 to 5 parts of 1, 2-propylene glycol, 0.1 to 1 part of sodium hyaluronate, 0.01 to 0.1 part of aloe extract, 0.01 to 0.1 part of snail stock solution, 0.01 to 0.1 part of herba centellae extract, 0.05 to 0.06 part of phenoxyethanol, 0.45 to 0.55 part of ethylhexylglycerin and 0.01 to 0.03 part of lactic acid. The lubricant obtained by the preparation method disclosed by the invention can effectively improve the lubricating property and prolong the service life; by means of accurately controlling the dosage and proportion of each component, optimizing the preparation process and the like, multiple advantages of low osmotic pressure, moisturizing and lubrication, skin friendliness, stability, safety and the like are realized, the requirements of different crowds can be met, and comfortable use experience is provided.

The invention discloses a battery fire extinguishing agent and a preparation method and application thereof. Preparation raw materials of the battery fire extinguishing agent comprise water, hydrated salts and auxiliary materials, the auxiliary materials comprise at least one of nano-particles or an organic binder, and the mass fraction of the hydrated salts in the preparation raw materials is 10%-80%. The battery fire extinguishing agent contains high-concentration hydrated salts, can effectively inhibit the occurrence of membrane boiling, and can interact with the nanoparticles and the organic binder to remarkably improve the fire extinguishing capacity and the cooling effect of the fire extinguishing agent.

The invention relates to the technical field of brazing materials, in particular to brazing filler metal and a preparation method and application thereof. The solid state of the brazing filler metal is in a sandwich foil shape, the brazing filler metal comprises a foil-shaped brazing filler metal core and an aluminum foil layer wrapping the peripheral side of the brazing filler metal core, and the brazing filler metal core contains Sr and foamed aluminum particles. The preparation method comprises the following steps: S1, melting a required amount of aluminum foil layer raw material into molten metal, and casting to obtain a hollow plate-shaped aluminum frame body with openings at two ends; s2, a required amount of brazing filler metal metal core raw material is heated to prepare a metal suspension containing solid foamed aluminum particles, the metal suspension is injected into the aluminum frame body, and a composite metal plate is obtained after cooling; and S3, the composite metal plate is subjected to multi-pass rough rolling and finish rolling, and the sandwich foil-shaped brazing filler metal is obtained. The brazing filler metal structure and the formula components are optimized and improved, brazing filler metal loss and brazing filler metal liquid turbulence during brazing can be restrained, and the shear strength of a brazed joint is improved.

The invention relates to a dispersing agent for a ternary positive electrode material, ternary positive electrode slurry and a ternary positive electrode plate. The dispersing agent for the ternary positive electrode material comprises a component A, a component B and an organic solvent. The dispersing agent for the ternary positive electrode material provided by the invention can effectively reduce the initial viscosity of the positive electrode slurry in the mixing preparation process of the positive electrode slurry, and after the positive electrode slurry is stored for a period of time, the positive electrode slurry is still kept stable, the phenomenon of slurry gelatinization is avoided, and the viscosity rise is also avoided; and the flexibility of the ternary positive pole piece prepared from the positive pole slurry can be effectively improved, so that the bending resistance of the ternary positive pole piece is improved.

The present invention provides a boron nitride@diamond nanocrystal epoxy resin composite material and a preparation method thereof, comprising the following steps: S1, dispersing boron nitride nanosheets in a buffer solution, adding dopamine hydrochloride, stirring and mixing at 50-60°C in the dark, and centrifuging to obtain modified boron nitride nanosheets; S2, dispersing the modified boron nitride nanosheets in water, then adding diamond nanocrystal dispersion under stirring conditions, then stirring at high speed, filtering, and obtaining diamond nanocrystal-loaded boron nitride nanosheet materials; S3, ultrasonically dispersing epoxy resin and diamond nanocrystal-loaded boron nitride nanosheet materials uniformly at 50-60°C, adding a curing agent after cooling, continuing ultrasonic dispersion, vacuum evacuating bubbles, tableting, and curing to obtain a boron nitride@diamond nanocrystal epoxy resin composite material. The present invention performs surface modification on BNNS by dopamine hydrochloride, and prepares a composite filler with ND, thereby improving the thermal conductivity of the composite material.