45results about How to "Improve the wrapping effect" patented technology

The invention discloses a preparation method of a composite sodium iron phosphate positive electrode material with high compaction density, which is characterized by comprising the following steps: (1) mixing a sodium source, an iron source, a phosphorus source, a carbon source and the like for preparing the composite sodium iron phosphate positive electrode material in proportion to obtain a precursor aqueous solution; (2) adding a surfactant into the precursor aqueous solution, grinding and uniformly mixing to obtain a homogeneous precursor aqueous solution; (3) carrying out drying granulation on the homogeneous precursor aqueous solution by using a spray drying technology to obtain composite sodium ferric phosphate precursor particles; and (4) performing high-temperature heat treatment on the composite sodium ferric phosphate precursor particles under the protection of inert gas to obtain the composite sodium ferric phosphate positive electrode material. The sodium-ion battery positive electrode material and the electrode plate with high compaction density can be obtained, the reversible specific capacity of the sodium-ion battery is improved, the problem of low gram capacity exertion is solved, the battery capacity is improved, and high-quality sodium-ion battery supply is provided for the field of energy storage.

The invention discloses an antibacterial moisture-absorption softening agent and a preparation method thereof. The preparation method comprises the following preparation steps: 1, preparing a softener; the preparation method comprises the following steps: S1, reacting toluene diisocynate with polyethylene glycol in a solvent to generate an intermediate I; s2, reacting the intermediate I with tetramethyldipropylenetriamine in an inert gas atmosphere to generate an intermediate II; s3, carrying out reaction on the hydrogen-containing silicone oil, allyl polyoxyethylene ether and allyl epoxy terminated polyoxyethylene ether in a solvent and a catalyst to generate modified silicone oil; and S4, carrying out a reaction on the modified silicone oil and a norfloxacin aqueous solution in a solvent, then adding the intermediate II into a reactant, carrying out a reaction for a period of time, and removing impurities to obtain the antibacterial moisture-absorption softening agent.

The invention provides a secondary sizing agent as well as a preparation method and application thereof. The secondary sizing agent comprises the following components: a main film-forming agent, an auxiliary film-forming agent, a lubricant, a silane coupling agent and water, wherein the main film-forming agent is an aqueous epoxy solution, the auxiliary film-forming agent comprises a low molecular weight epoxy emulsion and an aqueous polyurethane emulsion, and the lubricant comprises an organosilicon lubricant and an ionic lubricant. In the scheme, the secondary sizing agent formed by mixing the main film-forming agent, the auxiliary film-forming agent, the lubricant and the silane coupling agent with proper types and proper contents can endow the silicon carbide fiber with excellent wear resistance, folding resistance and mechanical properties. Compared with one-time sizing, the number of times of wear resistance of the fiber yarn is increased by more than 10 times, the yarn breaking rate in the fabric processing process is greatly reduced from 10% to 0.5%, the surface smoothness of the prepared fiber fabric is greatly improved, the performance of the composite material prepared through the impregnation method is integrally improved, the bending strength is obviously improved, and the performance requirement of the three-dimensional fabric can be completely met.

The invention relates to the technical field of fire extinguishing agents, and discloses a thermosensitive lithium battery special fire extinguishing agent and a preparation method thereof.The thermosensitive lithium battery special fire extinguishing agent comprises, by weight, 1-5 parts of a surfactant, 10-25 parts of an aprotic solvent, 2-5 parts of a fire extinguishing agent, 2-5 parts of a microcapsule agent, 3-10 parts of a temperature reducing agent, 2-10 parts of a thermosensitive expanding agent, 1-8 parts of a thermosensitive thickening agent and 70-100 parts of deionized water. According to the special fire extinguishing agent provided by the invention, a thermosensitive expanding agent, a thermosensitive thickening agent and a microcapsule medicament are added into a water-based fire extinguishing agent. And when meeting high temperature of flame, the fire extinguishing agent generates thermal expansion and increases viscosity, so that the adhesive force of the water-based fire extinguishing agent on the surface of the lithium battery is enhanced.

The invention relates to the technical field of medicine preparation, and particularly discloses a preparation method and application of a xantinol nicotinate pharmaceutical composition, and the preparation method comprises the following steps: step S1, preparing the following raw materials in parts by weight: 6.2-7.6 parts of xantinol nicotinate, 86-98 parts of purified water, 16-22 parts of a filler, 64-76 parts of a coating solution, 14-20 parts of a flavoring agent, 42-54 parts of a modified disintegrating solution and 2-4 parts of a lubricant; step S2, preparing the xantinol nicotinate pharmaceutical composition; the coating liquid and the modified disintegrating liquid are added, active functional groups contained in the coating liquid can form hydrogen-bond interaction with the active ingredients of the medicine, flexible long-chain alkane on the coating liquid can be entangled with alkyl chains on the modified disintegrating agent, the modified disintegrating agent not only contains a cellulose nanocrystal structure, but also contains a carboxymethyl structure, so that the cellulose nanocrystal-modified disintegrating agent has the advantages that the cellulose nanocrystal-modified disintegrating agent can be applied to the preparation of the medicine; through the combined action of the structures, the coating property, the disintegration property and the slow release property of the xantinol nicotinate pharmaceutical composition are improved.

The invention discloses an all-solid-state battery and a preparation method thereof, and belongs to the technical field of solid-state batteries. Comprising electrolyte crushing, mixing and coating processes, an acoustic resonance method is used in each process, a final solid electrolyte is obtained, the electrode material is prepared through the acoustic resonance method based on the prepared solid electrolyte, the specific capacity of the electrode material prepared through the acoustic resonance method is improved, and compared with an existing mainstream ball milling process, the specific capacity of the electrode material is greatly improved. And the process time is reduced from several hours to minute level, so that the efficiency of each flow is greatly improved, and the preparation efficiency of the whole all-solid-state battery is further improved.

The invention discloses a high-shear dynamic mixing reaction device for preparing flexible particles and a dynamic treatment process, and relates to the technical field of preparation of battery raw materials, and the process is characterized in that a flexible particle material for a battery is prepared in a compact space by adopting a pulsating stress dynamic processing method on the basis of an existing chemical formula. Performance obtained by a material formula and performance obtained by pulsating stress dynamic processing are mutually complemented to form an organic whole, the reaction device comprises a barrel, a feeding port is formed in the top of the barrel, a discharging port is formed in the bottom of the barrel, and a kneading and turning mixing mechanism is arranged, rotation of a stirring shaft is used as driving force of a sliding block, so that the material formula and the pulsating stress dynamic processing are combined, and the material formula and the pulsating stress dynamic processing are combined. The sliding block slides in the fixed sleeve in a reciprocating mode, upward and downward pressure is provided for materials in the barrel, the triangular fins are arranged on the baffles in a matched mode, the tips of the triangular fins can provide better shearing force for material particles rotating moderately, the materials are continuously kneaded and turned over and tend to be round, and carbon coating can be more uniform.

The invention relates to the technical field of cosmetics, and particularly discloses a preparation method of hydrophilic modified zinc oxide. The preparation method of the hydrophilic modified zinc oxide comprises the following steps: dissolving 0.1-5 parts by weight of a modifier in a solvent, uniformly mixing the solution containing the modifier with 20 parts by weight of zinc oxide powder, and drying at 100-150 DEG C to obtain hydrophilic zinc oxide; the modifier comprises polyglycerol. According to the preparation method of the hydrophilic modified zinc oxide, the problem of poor hydrophilicity of zinc oxide is solved, and the preparation method has the advantages of excellent hydrophilicity, simplicity, short time consumption and low cost.

The invention discloses an impregnation liquid for an iron-based alloy magnetic powder core and an impregnation method based on the impregnation liquid. The impregnation liquid is prepared from the following components in percentage by mass: 5-15% of a metal organic compound, 5-20% of resin and 65-90% of an organic solvent. The impregnation method comprises the following steps that (1) iron-based alloy powder before insulation is put into impregnation liquid to be soaked, drying is conducted after soaking, and impregnated iron-based alloy powder is obtained; (2) carrying out insulation treatment on the iron-based alloy powder by using the nano silicon oxide dispersion liquid, and preparing an iron-based alloy magnetic powder core by using a powder metallurgy process after the insulation treatment, so as to obtain the iron-based alloy magnetic powder core; the obtained iron-based alloy magnetic powder core is cleaned and dried, and a to-be-impregnated iron-based alloy magnetic powder core is obtained; (3) completely immersing the iron-based alloy magnetic powder core into the impregnation liquid for soaking, and cleaning after soaking; and (4) heating and curing the cleaned iron-based alloy magnetic powder core, and naturally cooling to obtain the impregnated iron-based alloy magnetic powder core.

The utility model relates to the field of mold film covering, and discloses an injection mold surface film covering device which comprises a machining table body, a fixing frame is fixedly installed in the middle of the top end of the machining table body, supporting plates are welded to the two side edges of the upper surface of the fixing frame correspondingly, and a first covering film is rotationally installed between the two supporting plates; limiting supports are rotatably installed in the middles of the two sides of the inner wall of the fixing frame, inner grooves are formed in the middles of the limiting supports, two-way lead screws are rotatably installed at the front and rear ends of the inner walls of the inner grooves, movable frames are symmetrically and movably installed at the front and rear ends of the outer surfaces of the two-way lead screws, and connecting rotating plates are symmetrically and rotatably installed on the side portions of one sides of the movable frames. According to the device, the injection mold rotates along the interior of the fixing frame, so that the effect of conveniently and uniformly coating the injection mold with a film at multiple angles is achieved, the overall coating effect of the injection mold is improved, the problem that the angle is relatively inconvenient to adjust when people coat the injection mold is solved, and the labor intensity of people is reduced.

The invention relates to the technical field of high polymer materials, and discloses a fluorine-containing fire extinguishing microcapsule and a preparation method thereof. A micro-suspension polymerization system is adopted, a reversible addition fragmentation chain transfer free radical polymerization technology is applied, and the fluorine-containing fire extinguishing microcapsule with a SiO2 / polymer composite shell layer wrapping a low-boiling-point fluoride core material is prepared. Reversible addition fragmentation chain transfer free radical polymerization adopted by the invention changes the dynamic characteristics of traditional free radical polymerization, a large number of low-molecular-weight oligomer chains are formed at the beginning of polymerization, the oligomer chains are easily diffused to an oil / water interface under thermodynamic driving, formation of a regular core-shell structure is promoted, and the uniformity of a shell chemical cross-linked network can be improved; therefore, the coating effect on the low-boiling-point fluoride core material is improved, toxic gases such as formaldehyde in the product can be avoided in the preparation process, and the preparation method has a wide application prospect.

The invention provides a basalt fiber reinforced chlorinated polyvinyl chloride material and a preparation method thereof, and relates to the technical field of polymer composite materials. According to the invention, surface modified basalt fibers are added into chlorinated polyvinyl chloride, cycloheptane and a titanate coupling agent are used for carrying out surface treatment on the basalt fibers, the average length of the basalt fibers is 5-25 [mu] m, and the diameter of the basalt fibers is 0.5-1.5 [mu] m, so that the compatibility of the basalt fibers and polyvinyl chloride is improved, and uniform dispersion in the chlorinated polyvinyl chloride material is ensured; and therefore, the chlorinated polyvinyl chloride pipe has impact resistance, tensile yield stress, vicat softening temperature and hydrostatic performance, and the actual application requirements are comprehensively met.

The application provides a lithium-rich lithium-iron material, a preparation method and application thereof, and belongs to the technical field of lithium ion batteries. The lithium-rich lithium-iron material comprises a core and a coating layer coated on the surface of the core. The material of the core is lithium-rich lithium-iron doped with a first doping element, and the material of the coating layer is carbon material doped with a second doping element. The first doping element comprises at least one of Ti, W, Ni, Ce and Co, and the second doping element comprises at least one of B, N, S, O and P. The lithium-rich lithium-iron material is used as a lithium supplement in a battery, so that the capacity of the battery can be further improved and the gas production amount can be reduced.

The utility model is applicable to the technical field of shock absorbers, and provides a universal contact pin type inflating tool, which is used for inflating an oil cylinder and a piston rod and comprises a clamping tool, an inflating air chamber and an inflating pressure head, the inflating air chamber is mounted on the clamping tool, the inflating pressure head is pressed on the piston rod in a sleeving manner, and the inflating air chamber is a flexible inflating block; the flexible inflation block, the inflation pressure head, the oil cylinder and the piston rod are matched, clamped and sealed to form an inflation space, so that the inflation condition is met, and inflation operation of the piston rod and the oil cylinder is achieved. According to the universal contact pin type inflation tool, on one hand, the inflation efficiency and the inflation effect can be greatly improved, on the other hand, sealing inflation of piston rods and oil cylinders of different sizes can be effectively achieved through the action of the flexible inflation block, meanwhile, the piston rods of different diameters are pressed in a sleeving mode through the action of the inflation pressure head, and the inflation efficiency is greatly improved. Sealing and air inflation of the piston rod with the step and the oil cylinder can be achieved, and therefore the air inflation universality is effectively improved.

The invention discloses a resin grinding wheel and a manufacturing method thereof. The invention discloses a resin grinding wheel, which belongs to the technical field of grinding wheels and is prepared from the following raw materials in parts by mass: 55 to 75 parts of grinding material, 5 to 10 parts of phenolic resin powder, 20 to 35 parts of filler, 1 to 8 parts of impregnant, 0 to 0.3 part of enhancer A, 1 to 2 parts of enhancer B and 1 to 5 parts of wetting agent. The impregnant is formed by mixing 0.55 to 4.5 parts of ethylene glycol and 0.45 to 3.5 parts of a silane coupling agent. The impregnant can be completely spread and coated on the surfaces of grinding materials and powder materials or permeate into air holes, gullies and gaps of the materials, the surface state and surface chemical properties of the materials are changed, the impregnant and the phenolic resin powder are good in compatibility, part of the phenolic resin powder is dissolved by the impregnant when the impregnant and the phenolic resin powder are mixed, and the mechanical property of the materials is improved. The impregnant can introduce the resin component into the microscopic surface of the material, so that the coating performance of the resin and the material is enhanced.

The application relates to the technical field of pesticides, and particularly discloses a tetramethylpyrazine suspension agent with slow-release performance and a preparation method thereof. The tetramethylpyrazine is prepared into a suspension, so that the particle size of the tetramethylpyrazine can be controlled, and tetramethylpyrazine particles with a suitable particle size as a capsule core can be obtained without dissolving and emulsifying the tetramethylpyrazine technical material. The application overcomes the defect that the tetramethylpyrazine is difficult to adopt a traditional microcapsule coating process, and a capsule membrane formed by a melamine modified urea-formaldehyde resin prepolymer can hinder the degradation of the tetramethylpyrazine, thereby prolonging the persistence period of the tetramethylpyrazine suspension agent and improving the insecticidal effect of the tetramethylpyrazine pesticide.

According to the technical scheme, the stress relieving device comprises a relieving box and a relieving ring, supporting seats are installed at the positions, close to the front surface and the rear surface, of the bottom in the relieving box, sliding rods are installed at the tops in the supporting seats, springs are installed on the portions, located on the two sides of the supporting seats, of the outer surfaces of the sliding rods through spring seats, and the springs are connected with the relieving ring. An eliminating ring is installed at the tail end of the sliding rod, a driving motor is installed at the bottom in the eliminating box, a cam is installed at the end, located on the sliding rod, of an output shaft of the driving motor, overturning motors are installed at the two ends of the front surface of the eliminating ring, and overturning frames are installed on output shafts of the overturning motors. According to the stress relieving device in seamless pipe forming, the problems that an existing seamless steel pipe stress relieving mechanism cannot evenly beat a seamless steel pipe, the uniformity of generated vibration force is poor, and the stress relieving effect of the seamless steel pipe is affected are solved, the vibration uniformity of the seamless steel pipe is improved, and therefore the stress relieving effect of the seamless steel pipe is guaranteed.

The application provides a capacitor core, a capacitor and a manufacturing method and an electronic product, and relates to the capacitor field. The capacitor core manufacturing method comprises the following steps: obtaining an anode body; generating a first cathode layer on the anode body to obtain a first intermediate piece; the first cathode layer is a poly (benzodifuran dione) layer; generating a second cathode layer on the first cathode layer of the first intermediate piece to obtain a second intermediate piece; the second cathode layer is a poly 3,4-ethylene dioxythiophene film layer; and manufacturing a capacitor core based on the second intermediate piece. The method helps to improve the performance of the capacitor core and the capacitor manufactured by the capacitor core.

This invention relates to the field of electronic paste preparation technology, and discloses a low sheet resistance tungsten-copper electronic paste and its preparation method, comprising the following steps: Step 1, preparing tungsten-copper composite powder: spherical tungsten powder with a diameter of 1-10 μm and copper powder with a size of 1-3 μm are mixed by mechanical mixing, with a tungsten to copper weight ratio of 3:1-6:1. Before mixing, the copper powder needs to undergo graphene coating pretreatment; Step 2, preparing an inorganic binder: the inorganic binder includes, but is not limited to, the following components: glass powder, CuO, TiO2, La2O3, Pu6O11; Step 3, preparing an organic carrier: the organic carrier includes a solvent, an organic binder, and a thickener; Step 4, preparing the tungsten-copper paste. The tungsten-copper paste of this invention has widely available raw materials, a simple preparation process, and is suitable for mass production. Although graphene, a high-priced material, is added, the amount added is small and the performance is particularly excellent, making the cost of the tungsten-copper paste of this invention far lower than that of similar foreign products, resulting in a very high cost-performance ratio.

The present invention discloses a method for preparing a soft magnetic composite material, comprising the following steps: mixing a soft magnetic metal powder and a thermosetting resin system and performing granulation treatment to obtain granulated powder; pre-treating the granulated powder so that the state of the thermosetting resin system in the pre-gel granulated powder is between the initial state and the gel state to obtain pre-gel granulated powder; and performing temperature and pressure treatment on the pre-gel granulated powder to obtain a soft magnetic composite material. The viscosity of the granulated powder under the temperature and pressure treatment conditions is increased, and the coating effect of the thermosetting resin system on the soft magnetic metal powder is improved, thereby obtaining a soft magnetic composite material with higher insulation resistance. Accordingly, the present invention also discloses a soft magnetic composite material obtained by the preparation method of the soft magnetic composite material, and a molded inductor obtained by the soft magnetic composite material, which have higher pressing density and insulation resistance.

This application provides a lithium-rich manganese-based cathode material, its preparation method, and an electrochemical device. The lithium-rich manganese-based cathode material includes a substrate material and a coating layer. The coating layer includes a lithium hexafluorozirconate coating layer located on the surface of the substrate material and a fluoride coating layer located on the side of the lithium hexafluorozirconate coating layer away from the substrate material. The chemical formula of the substrate material is Li(Li₂)₃. x Mn a Ni 1‑a‑ b Al b )O 2‑δ Where 0.05≤x≤0.33, 0

The invention relates to a high-precision thin film winding machine which is characterized in that a protective film wrapping mechanism is arranged to wrap a box body with a protective film, and then a pair of thin film winding assemblies are utilized to wind the thin film in the length direction and the width direction of the box body, so that the double protection effect on the box body is achieved through the protective film and the thin film; the detection mechanism is used for detecting the tension and the thickness of the film, so that the intelligent control system can regulate and control the tension and the thickness of the film according to box size information detected by the box size measuring mechanism, and the wrapping and winding effect of the box is improved.

The utility model discloses a spliced leather watchband which comprises a watchband main body, and the watchband main body comprises a surface leather material and a spliced leather material; the splicing leather can be arranged on the surface leather in a stacked manner; or the surface layer leather is locally provided with a splicing opening matched with the splicing leather, and the splicing leather is located in the splicing opening and connected with the surface layer leather in a bonding mode; according to the utility model, the structure of the watchband is improved, and watchbands with different styles and appearances can be created through different splicing modes and material selection; in addition, the splicing design allows consumers to carry out personalized customization according to own preferences and styles, for example, the consumers can choose favorite colors, materials and shapes to make unique watchbands; the splicing design breaks through the traditional watchband design mode, and shows innovativeness and uniqueness.

The invention discloses a manufacturing process of a coaxial cable and a coaxial cable, and relates to the technical field of cables. The manufacturing process of the coaxial cable of the invention can improve the bending performance and flexibility of the cable as a whole, and improve the production quality of the coaxial cable; it can also optimize the overall roundness of the cable after the first conductor and the second conductor are manufactured, thereby avoiding hollowing of the fire-resistant layer, and improving the fire-resistant performance of the manufactured coaxial cable; the coaxial cable of the invention has a first conductor formed by twisting a first type of copper wire bundle in the central layer of the cable, and a second conductor is arranged outside the first fire-resistant layer, the insulating layer, and the second fire-resistant layer, and the second conductor is sparsely wound by a plurality of second type copper wires on the outside of the second fire-resistant layer, so that the coating effect of the fire-resistant layer is better, and the fire-resistant and flame-retardant performance of the cable is better; combined with an improved outer sheath, it has better anti-aging and heat-resistant performance.

The invention discloses a safflower seed oil and wood frog egg oil nano-emulsion and a preparation method thereof. The safflower seed oil and wood frog egg oil nano-emulsion comprises the following components in parts by mass: 2-10 parts of compound oil, 2-6 parts of a surfactant, 0.5-4 parts of a cosolvent and 80-90 parts of deionized water, wherein the compound oil is composed of wood frog egg oil and safflower seed oil, and the mass ratio of the wood frog egg oil to the safflower seed oil in the compound oil is 1: 1-1: 4; the preparation method comprises the following steps: step 1, uniformly mixing safflower seed oil, wood frog egg oil, a surfactant and a cosolvent to obtain a first mixture; step 2, adding deionized water into the first mixture, and stirring to obtain crude emulsion; and step 3, crushing the crude emulsion by a cell crusher to obtain the safflower seed oil and wood frog egg oil nano-emulsion.

The invention discloses a moisture-proof S-type hot aerosol fire extinguishing agent and a preparation method thereof. The dissolution property of raw materials is utilized and a "eutectic-coating" process is adopted. An oxidant and a coating agent are dissolved in water and then an anti-solvent method is used to form a eutectic oxidant with a coating layer. The oxidant is coated in a targeted manner, and a reducing agent is dispersed in the oxidant. Finally, an adhesive is added for granulation and surface coating. A coating layer is formed on the oxidant through the dual effects of eutectic and coating, and the moisture absorption process of the oxidant and the hot aerosol fire extinguishing agent is hindered. The moisture-proof S-type hot aerosol fire extinguishing agent is prepared, thereby reducing the storage requirements of the hot aerosol fire extinguishing agent, prolonging the service life, and expanding the scope of application.

The invention relates to a polyethylene glycol disintegrating tablet. The polyethylene glycol disintegrating tablet is prepared from the following raw materials in parts by mass: content, modified polyethylene glycol, a disintegrating agent and an auxiliary agent, wherein the modified polyethylene glycol is obtained by reacting n-octylamine with long-chain alkyl acrylate, then reacting with ethylenediamine and then reacting with activated polyethylene glycol; the activated polyethylene glycol is obtained by reacting monomethyl ether polyethylene glycol with N, N-carbonyldiimidazole. Modified polyethylene glycol is adopted as a package, the modified polyethylene glycol is prepared by reacting n-octylamine with long-chain alkyl acrylate and then reacting with ethylenediamine, and hydrophobic segments such as long-chain alkyl are introduced into a PEG long chain. The hydrophilic-lipophilic balance of the material can be regulated and controlled by introducing the hydrophobic segment; enhanced interaction in molecular chains endows the tablet with sufficient mechanical strength.

The present invention relates to a transmission line parallel groove clamp that is convenient for robot maintenance, belongs to the field of power hardware technology, and comprises an upper plate, a pressure block, a rivet nut, an upper sleeve, a pull plate, a lower plate, a lower sleeve and a set screw. The set screw is screwed into the rivet nut to make the pressure block move upward, tighten the pull plate, and prevent loosening reliably; the upper plate and the lower plate are wrapped tightly, and the upper sleeve and the lower sleeve are used to wrap the wire together to maintain a reliable connection. The lower plate is subjected to tensile force, and its strength is less than that of the upper plate. It can automatically adapt to the relative position and shape of the wire and enhance the wrapping effect; the strength and hardness of the upper sleeve and the lower sleeve are both less than that of the wire, and they can automatically adapt to the relative position and surface shape of the wire, increase the effective contact area, maintain the effective conductive area, and avoid overheating; the assembly and disassembly process does not affect the relative position of the wire, and parts are not assembled during installation; the safety, reliability and convenience of robot detection, tightening and assembly and disassembly operations can be improved. The pull plate is elastic and can compensate for adaptive deformation, wrapping force, creep and stress relaxation.