603results about How to "Diffusion fast" patented technology

The invention discloses a dry-type transformer. The dry-type transformer comprises a transformer body, a housing, a bottom plate and a fan, wherein the transformer body is formed by a plurality of groups of encapsulated windings in an array mode, a supporting rod is arranged at the bottom of the transformer body and allow the encapsulated windings in each group to connect with each other, the supporting rod is arranged in a crossed mode, and first threaded holes penetrate the supporting rod; the transformer body is integrally arranged in the cavity of the housing, and the bottom of the transformer body is fixedly positioned with the bottom plate, and meanwhile, the transformer body is arranged in the housing through the fan, the whole device achieves dispelling the heat in the transformerbody, and the graphite material of housing side is protruding simultaneously, and the heat from the housing is diffused quickly, and the protrusion of the array distribution can reduce the air great dust entering the inner wall of the housing through air vents.

The invention discloses an electric flame stove capable of effectively inhibiting ozone overflow. The electric flame stove comprises a stove body, a burner mounted on the stove body and a hydrogen pipe, according to the plasma burner, the electrodes are adopted for spraying hydrogen, so that the hydrogen can be quickly diffused in the plasma burner and is in full contact with ozone generated by discharging, the ozone is timely converted into harmless substances such as oxygen and the like, ozone overflow is reduced to the maximum extent, and the risk caused by insufficient combustion of the hydrogen is also reduced; according to the invention, the electrodes are adopted to inject hydrogen, so that additional ejectors are reduced, the manufacturing cost is reduced, and the structure of the electric flame stove is simplified; according to the invention, the electrodes are used for spraying hydrogen, so that the plasma obtains higher temperature, and the plasma spraying speed and spraying distance are improved; according to the furnace end, due to the simplified structure and the simple mounting and dismounting mode, the mounting and maintenance difficulty and workload are greatly reduced.

The invention discloses a polyamine cross-linked network structure with high stability and a preparation method and application thereof, the structure takes an inorganic porous material as a carrier, the inorganic porous carrier and polyamine are cross-linked by using a silane coupling agent, and a cross-linking agent is introduced to cross-link polyamine molecules so as to form a solid adsorbent. The adsorbent still has more than 95% of adsorption capacity after 50 times of adsorption cycles, the desorption enthalpy is in the range of 50-80 kJ / mol, the regeneration energy consumption is in the range of 1.5-2.0 GJ / ton-CO2, and the high-stability and low-energy-consumption CO2 trapping characteristic enables the adsorbent to have large-scale application potential.

The invention provides a flexible ionic polymer binder as well as a preparation method and application thereof, and belongs to the technical field of lithium ion batteries. The invention provides a flexible ionic polymer binder, which has a chemical structure as shown in a formula I. When the binder is used for a positive electrode of a lithium ion battery, a polyacrylic acid trialkyl amino ester anionic salt chain segment provides an active site, and chemical bonds or electrostatic interaction is generated between the binder and a positive electrode active material, so that the positive electrode active material is formed. The specific type of anions improves the interaction between the binder and the positive electrode active material, and improves the capacity and cycle performance of the battery. The result of the embodiment shows that the initial specific discharge capacity of a lithium ion battery assembled by a positive pole piece prepared from the flexible ionic polymer binder provided by the invention can reach 155.2 mAh / g, the initial specific discharge capacity can still be kept at 149.9 mAh / g after 800 cycles under the current density of 0.5 C, the capacity retention rate can reach 96.59%, and the lithium ion battery has good cycle performance.

The invention relates to the technical field of pet supplies, in particular to an intelligent deodorization cat litter basin which comprises a cat litter basin body, a plasma module and a monitoring sensor, the cat litter basin body is used for storing cat litter, one side of the cat litter basin body is rotationally provided with a movable door for cats to go in and out, and the cat litter basin body is provided with a first ventilation opening; the plasma module and the monitoring sensor are in control connection and are arranged in the cat litter box body, the monitoring sensor is used for monitoring gas components in the cat litter box body, and the plasma module is used for generating positive and negative ions so as to deodorize and sterilize the inner space of the cat litter box body. The cat litter box has the effect of rapidly inhibiting and eliminating the peculiar smell of the cat litter box.

The invention provides a sand wind prevention and sand fixation green plant cultivation device. The bottom of the top plate is fixedly installed at the top of the sand stabilization box, wheel carriers are fixedly installed on the two sides of the bottom of the sand stabilization box, the green plant loading device is fixedly installed at the top of the top plate, the pressing device is fixedly installed at the bottom of the top plate, and a connecting rod device is arranged at the bottom of the top plate. And the green plant fixing device is fixedly mounted on the upper surface of the bottom of the sand stabilization box. According to the green plant cultivation device for sand wind prevention and sand fixation, the device is manually moved to a planting point to fill a green plant loading box, a green plant pushing motor is started, green plants are pushed to the position of a green plant pushing groove, the green plant pushing groove is pushed to drive the green plants to the position of a green plant pushing and loading plate, and the green plants are planted in the green plant loading box. And the green plant pushing and filling plate pushes the green plants into holes which are arranged in advance, so that multi-row planting is realized, the green planting of the desert is more efficient, the planting area is larger, and the rapid diffusion of large-area land desertification is reduced.

The invention is applicable to the technical field of mesoporous materials, and relates to an ultra-small single-mesoporous carbon nanoparticle and a preparation method and application thereof. The preparation method comprises the following steps: (1) preparing a single micelle solution; (2) obtaining SiO2 nano particles; (3) obtaining the SiO2 (at) single micelle superstructure nano particles; (4) obtaining a compound of the SiO2 coated single micelle wrapped by the polydopamine; (5) obtaining a SiO2-loaded mesoporous carbon structure; the invention also discloses an application of the ultra-small single mesoporous carbon nanoparticles in a battery. The ultra-small single-mesoporous carbon nanoparticles and the preparation method thereof have the beneficial effects that the single-mesoporous carbon nanoparticles have a large specific surface area, ultra-small particle size, large aperture and a unique broken hole structure, active sites of chemical reaction are increased, a better substance transmission channel can be provided, potential safety hazards are reduced, and the service life of the single-mesoporous carbon nanoparticles is prolonged. And the assembled aqueous zinc ion battery has relatively high discharge specific capacity.

The utility model belongs to the technical field of wastewater treatment, and particularly relates to a dosing device for industrial wastewater treatment, which comprises a bottom plate, support columns are symmetrically welded on one side of the top end of the bottom plate, a dosing bin is welded on the tops of the support columns which are symmetrically welded, a feed hopper is welded on one side of the top end of the dosing bin, and a discharge pipe is welded on one side of the bottom of the dosing bin. And an electromagnetic valve is installed on one side of the outer wall of the discharging pipe, and a transmission rotating rod is movably installed at the bottom in the dosing bin. The chemical feeding bin, a first gear motor, a transmission rotating rod and a spiral blade are used, chemical liquid can be prepared, a second gear motor, a stirring rod, a fixing sleeve and stirring plate blades are used, the flowing rate of industrial wastewater can be increased, and outflow of the chemical liquid prepared in the chemical feeding bin can be controlled by starting an electromagnetic valve; when the chemical liquid is in contact with the industrial wastewater above the stirring plate blades, the chemical liquid can be quickly diffused to the periphery, so that the treatment efficiency of the industrial wastewater can be improved, and the chemical adding device is convenient to use.

The invention relates to the technical field of heat insulation materials, in particular to a ceramic aerogel coating and a preparation method thereof.The ceramic aerogel coating comprises a ceramic anti-corrosion bottom layer, a middle coating and a transparent surface layer, and the preparation method of the ceramic aerogel coating comprises the steps that firstly, sand blasting treatment is conducted on a metal base material; step II, spraying a ceramic anti-corrosion primer, and drying; iII, preparing a floating coat base material; iV, spraying a floating coat base material, and sealing and baking; v, spraying a floating coat fabric, and sealing and baking; step VI, polishing the coating; step VII, spraying transparent finish paint after polishing, and sealing and drying; and step VIII, after unified inspection is completed, finish paint is sprayed, sealing baking is conducted for thorough drying, and then the ceramic aerogel coating is obtained, the prepared ceramic aerogel coating is good in adhesiveness, excellent in acid and alkali resistance, not prone to cracking and peeling, capable of protecting metal for a long time, low in heat conductivity coefficient and high in hardness, and the problems that an existing aerogel coating is high in brittleness, weather resistance and hardness and not prone to cracking and peeling are solved. And the mechanical performance is low.

The present invention relates to the technical field of sewage treatment equipment, and discloses a sewage treatment disinfection device, which comprises a treatment tank, the bottom of the treatment tank is provided with an isolation cavity, the inner wall of the bottom of the isolation cavity is fixedly provided with an aeration pump, and the output end of the aeration pump is rotatably connected with an aeration disc, an aeration head is fixedly mounted on the upper surface of the aeration disc, and a material injection assembly capable of promoting the treatment effect on organic matters in the wastewater is arranged in the treatment tank. By arranging the material injection assembly, a piston rod continuously reciprocates in the material injection barrel to pressurize the space in the material injection barrel, so that a pH value regulator in the material injection barrel is sprayed into the treatment tank through a one-way valve, and the pH value regulator is sprayed out of the treatment tank along with the rotation of the material injection barrel in the process. The diffusion range of the pH value regulator and the microbial activator is expanded, so that the pH value of the sewage in the treatment tank and the activity of microorganisms are maintained, and the purification treatment efficiency of the equipment on organic matters contained in the sewage is ensured.

The invention discloses a preparation technology of an environment-friendly low-energy-consumption hydrogen storage alloy material. The preparation technology comprises the following steps that S1, raw materials are selected and pretreated; s2, wet ball milling and mixing; step S3, drying and forming; s4, performing subsequent processing and detection; the low-energy-consumption hydrogen storage alloy material with excellent hydrogen storage performance and environmental protection characteristic can be prepared through the process, and the method not only reduces energy consumption and environmental pollution in the preparation process, but also improves the performance and quality of an alloy product; the prepared hydrogen storage alloy material has a porous structure, so that rapid absorption, release and diffusion of hydrogen are facilitated, and the hydrogen storage efficiency is improved; by means of the process, energy consumption and environmental pollution are reduced, the performance and stability of the hydrogen storage alloy material are improved, and powerful support is provided for development of the hydrogen energy technology.

The invention provides a dehydrogenation catalyst as well as a preparation method and application thereof. The catalyst has a microwave response core-shell structure and comprises a carrier and a catalytic active component, the carrier is of the core-shell structure, an inner core is a microwave absorption material, a shell is a catalytic carrier material and comprises one or more of La2O3, TiO2, Al2O3, SiO2, Fe2O3, MnO2, ZrO2, CeO2, K2O and MgO, and the microwave absorption capacity of the inner core material is larger than that of the shell material. The core-shell structure catalyst is designed to deploy microwave field distribution, heat is directly supplied to the interior of the catalyst, the internal temperature is controllable, cascade coupling of the catalyst and the microwave field can be achieved, sintering of catalytic active components is avoided, the catalyst keeps the high activity and stability of the catalyst, heat is supplied to the dehydrogenation reaction in time from the inside to the surface and from the inner core, and the dehydrogenation reaction efficiency is improved. The problem of internal cold and external heat in endothermic reaction can be solved, and dehydrogenation reaction is efficiently enhanced.

The invention relates to the technical field of capacitor electrode material preparation, in particular to a sulfur-doped nickel-manganese layered double hydroxide electrode material, a preparation method and a capacitor, and the preparation method comprises the following steps: growing sulfur-doped nickel-manganese layered double hydroxide on foamed nickel by using a simple and feasible one-step hydrothermal method; oxygen vacancies are introduced into the electrode material through a safe and harmless chemical reduction method; wherein the layered double hydroxide has a relatively large specific surface area and rich active sites, so that permeation of electrolyte and diffusion of ions are facilitated; through combination of sulfur doping and oxygen vacancy, the electronic structure of the electrode material can be synergistically optimized, and the electrolyte adsorption capacity and the electronic conductivity of the electrode material are enhanced. The problems that in the prior art, due to the fact that transition metal layered double hydroxides are low in electric conductivity and poor in electron transmission efficiency, actual energy density and power density are low, and cycling stability is poor are solved.

The invention provides a tracer agent for an oil field and a method for evaluating oil production contribution of each section of a horizontal well, and belongs to the technical field of oil field development. The tracer agent for the oil field, provided by the invention, is prepared from white oil, a nonionic surfactant, 3-allyloxy-2-hydroxy propanesulfonic acid sodium salt and alcohols; wherein the rare earth metal salt, the complexing agent and the sodium 3-allyloxy-2-hydroxy propanesulfonate form a complex; the complexing agent is a mixture of glycolic acid, triethylene tetramine and sodium dimercaptopropanesulfonate in a mass ratio of 10: (3-5): (1-2). The tracer agent for the oil field can stably exist under complex stratum conditions and can resist hypersalinity; in the process of evaluating the oil production contribution of each section of the horizontal well by using the tracer agent for the oil field, different types and different dosages of tracer agents are selected for different layer sections, so that the evaluation of the oil production contribution of each section of the horizontal well can be realized, and an effective basis is provided for subsequent refracturing.

The invention discloses an anti-ultraviolet para-aramid fiber and a production process thereof, and belongs to the technical field of aramid fiber production. According to the spinneret plate, the cross-shaped spinneret holes are adopted, the obtained cross-shaped para-aramid fibers have large specific surface areas, numerous micropores or grooves are formed in the surfaces of the cross-shaped para-aramid fibers, sweat, moisture and the like on the skin surface can be rapidly released to the outside and rapidly evaporated, the surface of a fabric is kept dry and comfortable, and the surface of the fabric is smooth. The obtained cross-shaped para-aramid fiber is impregnated in an anti-ultraviolet aging agent impregnation liquid containing TiO2, under the synergistic effect of ultrasonic waves, the anti-ultraviolet para-aramid fiber can be obtained, the mechanical performance of the anti-ultraviolet para-aramid fiber is obviously higher than that of the para-aramid fiber treated through a conventional technology, and the anti-ultraviolet para-aramid fiber has the advantages of being good in anti-ultraviolet performance, good in anti-ultraviolet performance and the like. The hygroscopicity and the ultraviolet resistance of the fiber are excellent.

The invention discloses a preparation method of an amorphous lithium ion battery negative electrode material, which comprises the following steps: (1) mixing a tin source, inositol hexaphosphate and a carbon source in an inert atmosphere, and fully stirring to obtain a mixed solution; (2) freeze-drying the obtained mixed solution to obtain a precursor material; and (3) calcining the precursor material in an inert atmosphere to obtain the amorphous lithium ion battery negative electrode material. The amorphous tin pyrophosphate can be prepared by the method, and the amorphous structure can provide abundant ion diffusion paths and realize rapid diffusion of internal lithium ions when being used as a lithium ion battery negative electrode material, can adapt to the volume change of the negative electrode material in the charging and discharging process, and enhances the cycling stability; therefore, the electrochemical performance of the electrode material is effectively improved.

The invention belongs to the technical field of articles for daily use, and discloses high-softness and high-strength embossed paper for daily use, the paper for daily use comprises a body base layer, a first embossed surface and a second embossed surface, the first embossed surface, the body base layer and the second embossed surface are sequentially connected from top to bottom in the vertical direction, the first embossed surface, the body base layer and the second embossed surface are all arranged in the horizontal direction. And the areas of the first embossed pattern and the second embossed pattern are different. The knurled household paper disclosed by the invention has moisture absorption, softness and strength performance at the same time. Through the design of the linear embossing and the dotted embossing, the porosity and the surface area of the paper are increased, the water absorption capacity is improved, and the paper can rapidly absorb and diffuse liquid.

The embodiment of the invention provides a nickel alloy surface composite coating and a preparation method thereof, and relates to the technical field of protective coatings, the nickel alloy surface composite coating comprises a Ta diffusion barrier layer prepared on the nickel alloy surface, and TiAlTa / (TiAlTa) xC1-x functional layers alternately arranged on the surface of the Ta diffusion barrier layer. The Ta diffusion barrier layer is adopted, so that excellent corrosion resistance is provided, corrosion of various corrosive media including strong acid, strong alkali and the like can be effectively resisted, the mutual diffusion effect of the nickel alloy and Ti, Al and other elements in the coating under the high-temperature condition is remarkably reduced, and the binding force of the coating and a base material is remarkably enhanced. The TiAlTa / (TiAlTa) xC1-x functional layers are alternately arranged, a formed multi-layer alternate structure can break the growth of penetrative columnar crystals and reduce the porosity, so that the corrosion resistance of the coating is improved, the surface layer (TiAlTa) xC1-x comprises various MAX phases and carbide phases, and the antifriction and wear-resistant effects and the corrosion resistance of the composite coating are improved.

The invention belongs to the field of electrochemical sensors, and relates to an electrochemical sensor for high-sensitivity detection of carbendazim and a preparation method of the electrochemical sensor. The surface of a glassy carbon electrode (GCE) is modified with an LDMS-CCN-GCT nanocomposite material prepared from dendritic large-aperture mesoporous silica, conductive carbon black nanoparticles and graphitized carbon nanotubes, and a CCN-GCT-LDMS / GCE working electrode is formed. The preparation method comprises the following steps: firstly, uniformly dispersing CCN and GCT in an N, N-dimethylformamide solution through magnetic stirring in an ultrasonic environment, wherein the CCN and the GCT are equal in mass; then, adding LDMS into the solution, and carrying out ultrasonic dispersion to obtain a uniformly mixed CCN (at) GCT (at) LDMS suspension; and finally, dispensing the uniform suspension onto the surface of GCE, and drying under an infrared lamp to prepare the working electrode CCN (at) GCT (at) LDMS / GCE modified by the CCN (at) GCT (at) LDMS nano composite material. Based on the synergistic effect generated by LDMS and CCN-coated GCT, the CCN-coated GCT-coated LDMS / GCE sensor is high in sensitivity, the detection limit can reach 7.36 nM, and the CCN-coated GCT-coated LDMS / GCE sensor has excellent carbendazim sensing detection performance.

A disclosed dust filtering mechanism for a nitrogen making machine comprises a base, the top of the base is fixedly connected with a pair of supporting frames, a box body is fixedly connected between the supporting frames, the box body is internally provided with a plurality of filtering cavities, the top of the box body is provided with a top cover, and the top of the top cover is provided with a first filtering assembly; the bottom of the box body is fixedly connected with a plurality of diversion bins, the side walls of the diversion bins are fixedly connected with a plurality of diversion pipes, the bottom of the diversion bins is provided with a second filtering assembly, a recycling assembly is arranged below the box body, the front end face of the box body is provided with a plurality of air outlet holes, and the front end face of the box body is provided with a third filtering assembly. Air can be shunted, so that the filtering effect is improved, the burden of the filtering mechanism is relieved, the self-cleaning function is achieved, dust particles are prevented from being attached and accumulated on the inner wall of the dust filtering structure, multi-stage filtering can be achieved, and all the filtering assemblies are designed in a modularized mode and can be rapidly detached and taken out so that regular maintenance and replacement can be conveniently conducted.

The invention discloses a wire electrode workpiece differential synchronous fluctuation micro-electrolysis wire cutting machining method which comprises the steps that a wire electrode and a workpiece conduct synchronous fluctuation and differential movement at the same time, and synchronous fluctuation is continuous swing that the wire electrode and the workpiece incline upwards and downwards synchronously; the synchronous fluctuation of the line electrode and the workpiece enables the electrolyte in the machining area to flow along the reverse direction of the synchronous fluctuation, so that the machined product is scoured and flows out by the electrolyte along the reverse direction of the synchronous fluctuation; the differential motion is the same-direction differential motion of the line electrode and the workpiece in the machining direction, so that the line electrode and the workpiece are in a different-speed chasing type motion state in the machining direction, real-time transposition of a machining area is achieved, and electrolyte in a machining gap is updated; the device has the advantages that machining products in machining gaps are thoroughly scoured in all directions, electrolyte in the machining gaps fully flows, uniform distribution of conductivity is improved, and machining stability, machining precision and machining efficiency are improved.

The invention relates to the technical field of lithium ion battery materials, in particular to a high-performance lithium ion battery porous carbon negative electrode material and a preparation method thereof.The preparation method comprises the following steps that S1, a hard template material and a carbon precursor material are subjected to ball milling and mixing to obtain a template / carbon mixed material; s2, mixing the template / carbon mixed material with a pore forming agent, grinding, and sieving to obtain a nano mixed material; s3, the nanometer mixed material is subjected to preheating treatment, pyrolysis modification is conducted after preheating is completed, a nitrogen-doped template carbon nanometer product is obtained, the preheating temperature ranges from 300 DEG C to 500 DEG C, the preheating time ranges from 3 h to 6 h, the pyrolysis temperature ranges from 600 DEG C to 1000 DEG C, and the pyrolysis time ranges from 0.5 h to 24 h; and S4, placing the nitrogen-doped template carbon nano-product in a template removing agent solution for reaction to obtain a nano-mixed solution, and centrifuging, washing and drying the nano-mixed solution to obtain the porous carbon negative electrode material of the lithium ion battery. The prepared porous carbon negative electrode material of the lithium ion battery is good in conductivity, and the diffusion rate of lithium ions under the low-temperature condition can be effectively increased.

The invention discloses a range hood capable of distributing air volume, a range hood and stove linkage system and a control method, and aims to solve the problem that a range hood cannot quickly extract much oil fume at part of a stove head. The fan assembly of the range hood capable of distributing the air volume is used for driving air to enter the smoke collecting cavity from the air inlet and to be blown out from the air outlet. The multiple air door pieces of the air door assembly correspond to the multiple air inlets in a one-to-one mode, and one air door piece is installed close to one air inlet and used for adjusting the opening area of the air inlet. The air door assembly is configured to have an initial position state and an air adjusting position state. When the air door assembly is in the initial position state, the air door pieces enable the air inlets to be in the open state. When the draught fan assembly is started and the air door assembly is in the air adjusting position state, the air door pieces enable at least one air inlet to be in the air adjusting state that the opening area is reduced or closed, and at least one air inlet is in the open state. The range hood provided by the invention is used for extracting particulate matters such as oil smoke.

The invention belongs to the technical field of sodium ion batteries, and particularly relates to a soft and hard carbon composite material and preparation and application thereof.The soft and hard carbon composite material is of a double-sulfur-rich core-shell structure with soft carbon coated with hard carbon, the soft carbon serving as an inner core is sulfur-doped mesocarbon microbead-based secondary pore carbon, and the sulfur-doped mesocarbon microbead-based secondary pore carbon serves as an outer core; the hard carbon serving as the shell is sulfur-doped PEDOT (poly (3, 4-ethylenedioxythiophene))-based hard carbon. The core-shell structure is constructed by means of surface chemical modification, pore structure regulation and control, soft and hard carbon compounding and the like of the mesocarbon microbeads, the technical problem that the sodium storage capacity of the pitch-based soft carbon anode needs to be improved is solved, considerable intercalation capacity can be obtained by means of widened carbon layer spacing, and the sodium storage capacity of the pitch-based soft carbon anode can be improved. And abundant sodium storage sites can be obtained to realize large-proportion surface capacitance storage, so that the first charge-discharge capacity, the first efficiency and the cycle performance of the sodium ion battery (sodium battery) are improved.

The invention discloses a multifunctional hot-blast stove for circulating heat supply, and relates to the technical field of hot-blast stoves, the side face of a shell is rotatably connected with a stove door, the two sides of the shell are fixedly connected with fan connectors, and the side, away from the fan connectors, of the side face of the shell is fixedly connected with a hot air pipe connector; the bottom of the shell is fixedly connected with an ash discharging component, the inner side of the shell is fixedly connected with a separating plate, the cleaning mechanism is arranged, and when suction force generated by the exhaust mechanism drives a connecting plate to move upwards on a guide rod, the connecting plate drives a scraping plate to clean and rub the inner side of the chimney; therefore, the phenomenon that a large number of smoke dust impurities are left on the inner side of the chimney when the smoke after heat exchange is continuously discharged through the chimney, and the inner side of the chimney is corroded when the smoke is not cleaned for a long time is avoided.

The invention discloses an ecological filter tank with a large-area composite filler structure. The ecological filter tank comprises a tank body, a composite filler layer, an aeration mechanism, a transmission mechanism and an adsorption mechanism, a gas blocking assembly is arranged in the aeration mechanism, and the aeration mechanism is enabled to carry out aeration with pressure by blocking gas flow and intensively spraying through the gas blocking assembly; the aeration mechanism rotates under the influence of recoil force, and then the adsorption mechanism adsorbs grease foam on the water surface in a rotating manner through the transmission mechanism, so that the diffusion speed of sludge and microbiota at the bottom of a water body when the filter is started is increased, the contact between the surface of the water body and air is enhanced, and the independent treatment process of the grease foam on the surface of the water body is reduced; the sewage treatment efficiency can be effectively improved, and the single-time sewage treatment speed is shortened.

The invention is applicable to the technical field of radiators, and provides a water-cooling shell radiator of electronic equipment, the water-cooling shell radiator comprises a water-cooling plate, a radiating upper cover, a connecting device and a water pump, and the top of the radiating upper cover is provided with a water injection hole, a water inlet hole and a water outlet hole which are communicated with a cavity formed in the radiating upper cover. According to the water-cooling shell radiator, the water-cooling plate, the heat dissipation upper cover, the connecting device and the water pump of the electronic equipment, internal circulation of water can be achieved through mutual cooperation, meanwhile, an independent fluid channel of a heat dissipation cavity is formed, no water-cooling connector exists in the equipment, the doubt of short circuit of the electronic equipment caused by liquid leakage is greatly reduced, and the service life of the electronic equipment is prolonged. And the water in the cavity can quickly diffuse heat to the radiating fins distributed on the cavity in an internal circulation manner, so that a quick radiating function is realized, the heat diffusion capability of the radiator is improved, the temperature of the chip is reduced, the chip can stably and continuously work, and the service life of the chip is prolonged.

The invention relates to a green light LED. The green light LED comprises an n-type layer, a multi-quantum well layer, a superlattice electron blocking layer, a p-type layer and a p-type electrode which are sequentially stacked on a substrate, the multi-quantum well layer comprises n periods of quantum well structures, each period of quantum well structure is formed by sequentially stacking an InGaN layer, a first GaN layer, an AlGaN insertion layer and a second GaN layer, and the Al component of the AlGaN insertion layer increases layer by layer in the direction from the substrate to the p-type layer; the superlattice electron barrier layer is composed of an AlGaN / GaN laminated layer with m periods and an AlGaN thick layer arranged on the laminated layer; due to the arrangement of the multi-quantum well layer and the superlattice electron barrier layer, the barrier height is effectively increased, electron leakage is reduced, the moving speed of hot electrons is relieved, faster diffusion of current carriers is promoted, the current congestion effect is improved, and better radiation luminescence performance and higher modulation bandwidth are achieved.

The invention discloses a method for preparing a neodymium iron boron permanent magnet through composite diffusion, and relates to the technical field of rare earth permanent magnet material processing. The method comprises the following steps: step 1, weighing a main alloy material and an auxiliary alloy material; secondly, the main alloy material is smelted and cast into a throwing piece through a piece casting furnace, and then the throwing piece is subjected to annealing treatment. According to the invention, through a composite grain boundary diffusion technology, evaporation treatment is firstly carried out to obtain an intermediate-state magnet, so that the demagnetization exchange coupling effect between adjacent main phase grains is enhanced, and a channel beneficial to subsequent diffusion of heavy rare earth elements is also formed; and then complete diffusion between grain boundaries is achieved, the maximum diffusion depth is achieved, and the best diffusion effect is achieved through subsequent aging treatment.

The invention belongs to the technical field of gas sensors, and particularly relates to a dimethyl disulfide gas sensor based on a porous Cr2O3 nano material and a preparation method of the dimethyl disulfide gas sensor. The porous Cr2O3 nano material is used as the sensitive material of the dimethyl disulfide gas sensor for the first time, and the resistance-type dimethyl disulfide gas sensor with excellent performance is constructed. The sensor fully utilizes the advantages of high sensitivity, low cost, simple device, easy integration and easy on-site continuous detection of a semiconductor resistance-type sensing material and the characteristics of high response to dimethyl disulfide and excellent selectivity of Cr2O3, and constructs the resistance-type sensor which is sensitive in response to dimethyl disulfide, good in selectivity, low in working temperature, economical and environment-friendly. Meanwhile, a good sensitive material is found for a dimethyl disulfide gas sensor, and a new application field is developed for Cr2O3.