23results about How to "Fully covered" patented technology

The invention relates to the technical field of lithium batteries, and discloses a three-dimensional structure graphene coated nano silicon negative electrode material and a preparation method thereof, a lithium ion battery negative electrode plate and a lithium ion battery. The negative electrode material comprises modified nano silicon and graphene oxide coating the modified nano silicon; the weight ratio of the modified nano silicon to the graphene oxide is (10-1): 1. The modified nano silicon with positive charges and the graphene oxide with negative charges generate electrostatic self-assembly, so that the nano silicon is fully coated with the graphene, volume expansion and cracking of the nano silicon and formation of a non-uniform SEI film can be effectively prevented, and the lithium ion battery containing the negative electrode material has improved cycle performance.

The present application relates to the technical field of high polymer material flame-retardant modification, and particularly relates to a COF hierarchical modification APP-based core-shell flame-retardant smoke suppressant, a preparation method and application thereof. The flame-retardant smoke suppressant takes APP as a flame-retardant core layer; takes PVP as a soft template agent, and assists in situ growth of melamine-p-phenylenedimethylene formaldehyde (COF) on the surface of APP to adsorb combustible volatile components in the initial pyrolysis stage, provide a gas source, and act as a Fe 3+ coordination skeleton; takes tannic acid as a coordination agent and a carbon source, and constructs a multi-level core-shell structure with Fe 3+ coordination. The present application realizes integration of flame-retardant and smoke suppression functions through hierarchical modification. When the flame-retardant agent is applied to polyurethane, it can significantly reduce the heat release rate, smoke release rate and toxic gas generation amount, and simultaneously improve the compatibility with the matrix, effectively overcoming the defects of poor compatibility and insufficient flame-retardant and smoke suppression performance of traditional APP flame-retardant agents. The present application has simple preparation process and controllable conditions, and is suitable for industrial production.

The present invention belongs to the technical field of material processing, and specifically relates to highly dispersed nanoparticles and a dispersion method thereof and a particle-reinforced metal-based composite material. The dispersion method comprises: in a double-screw extruder, in an inert atmosphere, mixing and dispersing a first coated nanoparticle and a second particle; the first coated nanoparticle comprises a first nanoparticle and a coating film coated on the surface of the first nanoparticle; wherein the size of the first nanoparticle is smaller than the size of the second particle; the temperature of the mixed dispersion causes the coating film to soften and have viscosity; the double-screw extruder has a spiral surface, a concave-convex structure is arranged on the spiral surface, and the concave-convex structure satisfies: the concave-convex projection D is 0.1-0.5mm, and the concave-convex height difference H is 250-600nm. The present invention can eliminate the electrostatic attraction between the first nanoparticles in the mixed dispersion, so that the nanoparticles are evenly dispersed inside and can be stored for a long time without agglomeration.

The application discloses a siloxane grafted hyperbranched polyethylene and application thereof in preparation of a low-leakage paraffin-based heat-conducting phase change material. The application provides a siloxane grafted hyperbranched polyethylene, which is obtained by copolymerization of ethylene and vinyltriethoxysilane according to a 'chain walking' polymerization mechanism and catalyzed by a Pd-diimine catalyst. The application provides application of the siloxane grafted hyperbranched polyethylene in preparation of a low-leakage paraffin-based heat-conducting phase change material. The application synthesizes the siloxane grafted hyperbranched polyethylene with crosslinking characteristics, uses the same to be compounded with paraffin, and forms a three-dimensional network structure through subsequent crosslinking, thereby effectively restricting macroscopic flow of paraffin above a phase change temperature, and significantly improving shape stability and anti-leakage performance of the composite material. Meanwhile, flake graphite is introduced to construct an efficient heat-conducting path, and the overall heat-conducting coefficient of the material is improved.

The invention discloses an Al / PDA / CuZnO2 / AP composite energetic material, which is characterized in that PDA is used as an interface bonding layer to enable Al powder to be in close contact with a bimetallic catalyst CuZnO2 and AP, nano-particles CuZnO2 are uniformly attached to the PDA modified Al powder, and the Al powder, the CuZnO2 and the AP are directionally arranged and self-assembled to form an energetic micro-unit with Al / PDA / CuZnO2 as a core and AP as a shell layer. According to the preparation method of the composite energetic material, a mixed solvent is selected as a crystallization solvent, the Al / PDA / CuZnO2 / AP composite energetic material with the controllable particle size is prepared through a cooling recrystallization method, the grading requirement of a composite solid propellant is met, the metal combustion agent, the catalyst and the oxidizing agent are tightly combined, the reaction diffusion distance of the metal combustion agent, the catalyst and the oxidizing agent is shortened, and therefore the particle size controllable Al / PDA / CuZnO2 / AP composite energetic material is obtained. The synergistic energy release effect is improved, and the energy performance of the composite solid propellant is expected to be enhanced. The preparation method is simple and easy to operate, the crystallization solvent can be recycled for multiple times, and the preparation method has the characteristics of environmental protection and high economic benefit and is beneficial to industrial large-scale production.

According to the preparation method of the silver-coated copper powder for the solar low-temperature drying slurry, the silver-coated copper powder which is high in oxidation resistance, good in conductivity, complete in coating and capable of being used for the low-temperature slurry can be prepared through the method, and the preparation method is low in production cost, controllable in technological process and high in practicability.

The invention discloses carboxyl magnetic beads and a preparation method thereof, and relates to the technical field of polymer synthesis, a sodium hydroxide solution is prepared and added into a flask, deionized water is used for washing for 2-3 times, vacuum drying is performed for standby application, a suspension polymerization stabilizer and deionized water are added into the flask and stirred and dissolved at room temperature, deionized water and ethyl alcohol are used for washing products in sequence, and the carboxyl magnetic beads are obtained. Performing vacuum drying on the Fe3O4 / PS microspheres for later use, preparing a deionized water / ethanol solution, and adding the deionized water / ethanol solution into a flask; according to the carboxyl magnetic beads and the preparation method thereof, the conversion rate is high, the particle size uniformity degree is high, carboxyl groups are grafted on the surfaces of the microspheres through free radical in-situ polymerization reaction, the carboxyl magnetic beads have the characteristics of high carboxyl grafting rate, uniform distribution and the like, the carboxyl magnetic beads are modified by N (3-aminopropyl) methacrylamide, the steric hindrance among the carboxyl magnetic beads can be increased, and the stability of the magnetic beads is improved. Therefore, dispersity and stability of carboxyl magnetic beads are improved, chemical stability of the carboxyl magnetic beads is guaranteed, and oxidation is reduced.

The present application discloses an image sensor packaging structure and a packaging method, wherein the inner side surface of a side panel in the packaging structure has an inclined slope or a curved side panel surface extending downward toward a terminal pad, thereby reserving space for dispensing glue from one side of the inner side surface of the side panel; the distance between the side panel and the terminal pad can be controlled, and the space for dispensing glue from one side of the side panel can be controlled, thereby reserving sufficient space for dispensing glue; the packaging structure is particularly suitable for image sensor structures in which leads are relatively dense and it is not convenient to eject atomized filling glue from both sides below the leads.

The application discloses a kind of MXene-based composite wave-absorbing materials and preparation method thereof, water-based electromagnetic functional color paste and preparation method and application, the MXene-based composite wave-absorbing material provided in the application is with two-dimensional layered MXene nanosheet as carrier, and Fe3O4@Ag core-shell structure nanosphere is loaded on the surface and interlayer of two-dimensional layered MXene nanosheet.The above-mentioned MXene-based composite wave-absorbing material is by electrostatic self-assembly process, Fe3O4@Ag core-shell structure nanosphere is loaded on the surface and interlayer of two-dimensional layered MXene nanosheet, the composite of both is realized.In addition, the application further provides water-based electromagnetic functional color paste comprising the above-mentioned composite wave-absorbing material, the color paste shows excellent storage stability and outstanding electromagnetic shielding and absorption performance, and can be suitable for a variety of coating processes.

The invention discloses a double-cavity special-shaped structure enhanced PE hollow-wall winding pipe and a preparation device, and relates to the technical field of hollow-wall winding pipes, the cross section of a square pipe structure of the winding pipe is a rhombus, the square pipe structure is composed of two equilateral triangles, five edges of the square pipe structure are made of materials with the same thickness and the same formula, and the square pipe structure is made of stainless steel. Due to the fact that a triangle has high stability, deformation can be effectively resisted when the triangle is subjected to external force, and normal use of the tube body can be protected. And due to the triangular stable structure, high elastic modulus can be provided, and the ring stiffness performance of the pipe body is enhanced.

The application relates to a sodium ion battery electrode material, in particular to a preparation method of a phosphate or fluorophosphate polyanion compound and application of the phosphate or fluorophosphate polyanion compound in a sodium ion battery electrode material; the iron-based phosphate polyanion compound has one or two or more of structures shown in formula I, formula II, formula III, formula IV or V, VI: Na4Fe3(PO4)2P2O7, Na3Fe2(PO4)1P2O7, NaFePO4, Na2FeP2O7, Na2FePO4F, Na5Fe2(PO4)2F3; the prepared phosphate or fluorophosphate polyanion compound is uniform in granularity, complete in carbon coating, high in purity and good in electrochemical performance, especially in rate performance.

The invention provides a patch plug port shielding device and method for circuit board vacuum nano coating, and belongs to the technical field of circuit board processing. Comprising a shielding assembly, the shielding assembly comprises a connecting pipe, and one end of the connecting pipe far away from a conductive port body is communicated with an outer ring. According to the invention, through the arrangement of the shielding assembly and the manipulator, when the manipulator shields the conductive port body, the shielding assembly is inserted into the conductive port body through the manipulator, glue is injected into the conductive port body through the shielding assembly, and after glue injection, the conductive port body is cured, so that full shielding of the conductive port body is realized; according to the technical scheme, the possibility that a film coating material enters the conductive port body is lower during film coating, then after film coating is completed, the shielding glue can be pulled out through the shielding assembly, rapid cleaning is achieved, shielding is more convenient through the mechanical arm, and after the shielding assembly is arranged, the using amount of the shielding glue can be reduced, and pulling-out is more convenient.

The invention relates to the technical field of medical instruments, in particular to a foot-operated lifting type gynecological examining table suitable for patients with mobility difficulties by utilizing the lever principle, which comprises a bed frame and a bed board, the bed board is provided with a second end part of a first end part, a binding part is arranged on one side of the second end part of the bed board, and a supporting leg frame is arranged on the bed frame. The bed frame comprises a bearing frame body and a base frame body, the bearing frame body comprises a main frame, two tripods and a top supporting rod, the second end of the bed board is connected with the tripods, a hydraulic supporting rod is arranged on the main frame, and a first matching state and a second matching state exist between the bed board and the bed frame; the trunk of a patient is fixed to the bed board through the binding part, after the lithotomy position of the patient is formed, the hip of the patient can be located outside the supporting range of the bed board, and therefore when the vagina and the vulva are flushed, the situation that flushing fluid flows to the bed board to cause pollution is avoided, the workload of medical staff for cleaning the examination bed is effectively relieved, and the examination efficiency is improved. And the practicability of the device in actual use is improved.

The utility model discloses a layered steam cabinet with a turnover structure, which comprises a cabinet body, a steam collecting disc and a mounting bracket, the steam collecting disc for conveying steam is erected at the upper end of the cabinet body, the input end of the steam collecting disc is communicated with a steam inlet pipeline, a plurality of guide rails are welded on two sides of the inner wall of the cabinet body, the inner walls of the guide rails are connected with drawers in a sliding manner, and the drawers are connected with the mounting bracket. A sliding frame is welded to the connecting position of the drawer and the guide rail, a shaft hole is formed in the middle of the outer wall of the sliding frame, a storage disc is embedded into the inner wall of the sliding frame, and a movable shaft is fixed to the connecting position of the storage disc along the shaft hole. When the layered steaming cabinet with the turnover structure is used, the whole drawer adopts a layered design, a large amount of food is steamed through the plurality of drawers, the requirement of batch production is met, meanwhile, the drawer adopting the sliding frame design is adopted, the friction coefficient between the drawer and the guide rail is low, and a user can conveniently pull the drawer for loading.

The application belongs to the field of preparation of carbon nanotubes with special structure, and relates to a high-conductivity carbon-coated single-walled carbon nanotube carbon net, a preparation method and application. The method uses plasma arc discharge to prepare single-walled carbon nanotubes, uses in-situ arc discharge or high-temperature chemical vapor deposition to form a high-crystallinity carbon layer on the surface of the single-walled carbon nanotubes after treating a gaseous carbon source, and obtains a high-conductivity carbon-coated single-walled carbon nanotube carbon net with a macroscopic filamentous structure. The method can increase the purity of the product by more than 2 times and the yield by more than 3 times. Meanwhile, the high-crystallinity carbon coated on the surface of the carbon nanotubes can effectively improve the conductivity and dispersibility of the product, and the powder conductivity can reach 1.3*10 4 S·m ‑1 This method greatly saves the production cost, reduces the acid consumption for purifying unit mass of product, reduces the environmental pollution caused by waste acid, and has important application value in conductive paste and the like due to the high conductivity and good dispersibility of the product.

The utility model discloses a fumigating and flushing hip bath device which comprises a hip bath basin body, a heater, a temperature sensing assembly, a water spraying assembly, an atomizer assembly, a clean water tank and a sewage tank. A hip bath groove is formed in the top of the hip bath basin body; the temperature sensing assembly, the heater, the atomizer assembly and the water spraying assembly are hermetically mounted at the bottom of the hip bath tank; the clean water tank and the sewage tank are arranged in the bidet body; a water suction pipe, a water drainage pipe and a circulating water pipe are further arranged in the bidet body. The hip bath tank is connected with the sewage tank through a drain pipe; the water spraying assembly comprises an electric water pump which is connected with the water purifying tank through a water suction pipe. One end of the circulating water pipe is connected with the water suction pipe, and the other end is connected with the drainage pipe; electromagnetic valves are arranged on the water suction pipe, the water drainage pipe and the circulating water pipe; the circulating water pipe is located above the electromagnetic valves of the water suction pipe and the water drainage pipe. The hip bath device solves the technical problems that liquid adding and liquid changing are difficult due to the fact that a traditional hip bath device is large in space and inconvenient to move.

This invention relates to the field of cable technology, specifically to a processing technology for high-temperature resistant, ultra-flexible motor lead wires. The process involves preparing two types of hexagonal boron nitride fillers with different surface properties through hydroxylation and silane modification, and applying them in separate layers of a three-layer insulating compound. Combined with a polysiloxane alkyl body with increasing phenyl content from the inside out, flexible single-end segments on the inner side, and a differentiated crosslinking agent / inhibitor system, the lead wire is obtained through three-layer co-extrusion and multi-stage temperature-increasing vulcanization. This process solves the problems of decreased flexibility, poor bending reliability, and easy failure of interlayer interfaces caused by high phenyl / high filler content in traditional methods, achieving a balance between high-temperature resistance, ultra-flexibility, and stable electrical performance.

The present invention belongs to the technical field of flue gas denitration, discloses a preparation method of a CO-SCR denitration catalyst, a CO-SCR denitration catalyst and a flue gas denitration method, and solves the technical problem that there is no high-performance CO-SCR catalyst with high strength, low cost and the ability to overcome oxygen-rich conditions in the prior art. The preparation method of the CO-SCR denitration catalyst comprises the following steps: mixing a primary carbonized material and a first adhesive solution by ball milling to obtain a mixture; mixing the mixture, a reinforced resin powder and a second adhesive solution by ball milling, and then extruding to obtain a pressed blank; activating the pressed blank to obtain activated carbon; immersing the activated carbon in a first modified solution, filtering, drying and roasting after the immersion is completed to obtain a modified activated carbon; the first modified solution contains a soluble transition metal salt; immersing the modified activated carbon in a second modified solution, filtering and drying after the immersion is completed to obtain a CO-SCR denitration catalyst.

The present application discloses an image sensor packaging structure and a packaging method. The outer side of the transparent cover is narrow at the top and wide at the bottom, and space is reserved for dispensing glue from one side of the outer side of the transparent cover, so that the filling glue can first flow from one side of the transparent cover into the first bottom surface of the substrate outside the sensing chip, and the liquid level of the filling glue rises from the bottom to the top, and can fully cover the leads. It is particularly suitable for image sensor structures where the leads are relatively dense and it is not convenient to eject atomized filling glue from both sides below the leads.

The intelligent metering and atomizing device comprises an air machine (2), an electromagnetic pump (5), an auxiliary barrel (4), a ball mill main body (9), an atomizing nozzle (8), a flow sensor (6) and a main control cabinet (1). The atomizing nozzle is mounted at the feeding end of the horizontal ball mill main body; an inlet of the electromagnetic pump is connected with the additive barrel through a pipeline and pumps an additive from the additive barrel, and an outlet end of the electromagnetic pump is connected with the flow sensor through an additive pipeline (7) and is connected with the atomizing nozzle through the flow sensor; the compressed air output of the air compressor is respectively connected with the atomizing nozzle and the additive barrel through a compressed air pipeline (3), so that spraying air pressure is provided for the atomizing nozzle, and positive pressure is provided for the additive barrel; the main control cabinet comprises a CPU programmable logic controller, a power supply, a control circuit and an execution element. According to the utility model, the PLC is adopted, so that the auxiliary dosage can be intelligently metered; and after the auxiliary agent is atomized and added, the coating with the powder is more sufficient, and better dispersion and modification effects can be achieved.

The invention relates to the technical field of batteries, and discloses a modified high-nickel positive electrode material and a preparation method and application thereof, the preparation method comprises the following steps: (1) mixing a cobalt salt, an organic ligand and a solvent to obtain an MOF precursor solution; (2) dispersing a high-nickel positive electrode material in the MOF precursor solution for reaction to obtain an intermediate product; and (3) carrying out solid-phase mixing on the intermediate product and a sulfur source, and carrying out heat treatment to obtain the modified high-nickel positive electrode material, the modified high-nickel positive electrode material comprises a high-nickel positive electrode material and a composite coating layer, wherein the composite coating layer comprises cobalt sulfide and a carbon material. According to the preparation method provided by the invention, the MOF material is grown in situ on the high-nickel positive electrode material, and then the sulfur source is used for vulcanization, so that the uniform and compact composite coating layer which is firmly combined with the matrix on the nanoscale is formed on the surface of the positive electrode material, the interface stability, the thermal stability and the conductivity of the material are improved, and the electrochemical performance of the battery material is further improved.

The invention discloses nickel-coated graphite composite powder and a preparation method thereof, and relates to the technical field of composite materials. The preparation method comprises the following steps: taking a carbon raw material as a starting point, mixing a nitrogen source, a phosphorus source and a sulfur source, performing high-temperature treatment to obtain modified artificial graphite powder, adding the modified artificial graphite powder into a plating solution mixed with nickel salt, a reducing agent, a complexing agent and a stabilizing agent, and optimizing process parameters. The nickel-coated graphite composite powder which is complete in coating, excellent in anti-aging performance and electromagnetic shielding performance and simple and efficient in preparation process is prepared. The nickel-coated graphite composite powder can be widely applied to multiple fields of electromagnetic shielding materials, conductive fillers and the like.

The present invention belongs to the technical field of flue gas desulfurization, discloses a dual-function desulfurization catalyst and its preparation method and application, and solves the technical problems of low cost and low desulfurization efficiency of dual-function desulfurization catalyst in the prior art. The dual-function desulfurization catalyst is used to remove COS and H2S in flue gas at low temperature. The preparation method of the dual-function desulfurization catalyst includes the following steps: impregnating activated carbon in a first modification solution, filtering, drying and heat-treating after the impregnation is completed; the first modification solution contains urea and at least one of soluble copper salt, iron salt and zinc salt; impregnating activated carbon in a second modification solution, filtering, drying and heat-treating after the impregnation is completed, and obtaining a dual-function desulfurization catalyst; the second modification solution contains alkali metal salt and / or alkali.