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Polydimethylsiloxane-dual scale silicon dioxide composite super-hydrophobic coating and forming method thereof
The invention relates to a polydimethylsiloxane-dual scale silicon dioxide composite super-hydrophobic coating and a forming method thereof. The composite super-hydrophobic coating comprises a polydimethylsiloxane layer and silicon dioxide particles uniformly dispersed on the polydimethylsiloxane layer. The composite super-hydrophobic coating is obtained by a method of curing a polydimethylsiloxane coating material containing large-particle-size silicon dioxide nanoparticles and then firing the coating, and the composite super-hydrophobic coating is of a secondary rough surface structure. According to the invention, the durability of the coating is strengthened, and the super-hydrophobic performance of the surface is recovered by a method of polishing or re-firing, so as to keep the excellent performance of the coating for a long time.
Owner:JILIN UNIV
High temperature proton exchange film fuel cell membrane electrode and its preparing method
InactiveCN1581546AGood water retention at high temperatureSuitable for continuous productionFinal product manufactureCell electrodesChemistryNanometre
Membrane electrode is composed of secondary unit and main unit possessing function of high temperature and molding moisture. Secondary unit is a gaseous diffusion layer, and the main unit is prepared by binding gaseous diffusion layer, catalyst layer, and inorganic Nano particles to proton exchange layer. The preparation method includes following steps: coating pulp of catalyst on gaseous diffusion layer to prepare catalyst layer; casting inorganic Nano particles and resin solution of proton exchange to prepare inorganic Nano particles layer and proton exchange layer; then coating pulp of catalyst again to prepare catalyst layer. Membrane electrode is obtained by cold contact between main unit and secondary unit, or hot pressing the two units. Features are: suitable to continuous production, controllable thickness of proton exchange layer, high binding intensity between layers, low contact resistance, operatable under high temperature.
Owner:WUHAN UNIV OF TECH
Shortening-related thermal tomography detection method and shortening-related thermal tomography detection system for GFRP (glass fiber reinforced plastics) crack defects
InactiveCN106501315ANot limited by sizeNo damageMaterial flaws investigationThermal tomographyData acquisition
The invention discloses a shortening-related thermal tomography detection method and a shortening-related thermal tomography detection system for GFRP (glass fiber reinforced plastics) crack defects. The shortening-related thermal tomography detection system comprises a thermal infrared imager, an Ethernet cable, a computer, a USB (universal serial bus) data line, a BCN (broadband communication network) triggering signal line, a data collection card, a BNC data line, a laser device power source, a laser device power line, a laser device, an optical fiber and a collimating lens. The thermal infrared imager is connected with the computer through the Ethernet cable, the computer is connected with the data collection card through the USB data line, the data collection card is connected with the thermal infrared imager through the BNC triggering signal line and is connected with the laser device power source through the BNC data line, the laser device power source is connected with the laser device through the laser device power line, and the laser device is connected with the collimating lens through the optical fiber. The shortening-related thermal tomography detection system has the advantages that completely-damage-free, non-contact and efficient detection of the crack defects of GFRP materials can be realized, and dimensional limitation of detection materials is avoided.
Owner:HARBIN INST OF TECH
Semi-transparent dielectric material photo-thermal character measuring system and method
InactiveCN104880437AEfficient measurementNo damageAnalysis by material excitationPhase lockingThermal emission
The invention discloses a semi-transparent dielectric material photo-thermal character measuring system and method. The measuring system is composed of a computer, a two-dimensional mobile platform, a support, a small off-axis paraboloidal mirror, a collimating lens, an optical fiber, a semiconductor laser, a large off-axis paraboloidal mirror, a power line, a laser power source, an HCT thermal detector, a BNC data line, a pre-amplifier, a laser control line, a phase-lock amplifier, a phase-lock amplifier control line and a data collecting signal line. According to the measuring method, based on the photo-thermal radiation measuring principle, the computer is adopted to control a function generator to generate a modulating signal, the signal controls the laser to enable the light intensity of the laser to change according to a modulating law, after the modulated changed laser is radiated to a sample piece, due to the existence of a photo-thermal effect, the temperature rise and fall and the infrared radiation of the sample piece occur, a photo-thermal radiation signal is correlated to a photo-thermal character parameter of the sample piece, the signal is received by the HCT thermal detector, and then the photo-thermal character parameter of the sample piece is extracted through an arithmetical operation. The semi-transparent dielectric material photo-thermal character measuring system and method can achieve the complete zero damage, non-contact and high-efficiency measurement of materials.
Owner:HARBIN INST OF TECH
Automatic detection device and method of geometric quality of arge-sized thin-plate metal workpiece
InactiveCN108489394ANot limited by sizeRealize quality inspectionUsing optical meansImaging processingLocal sequence
The invention relates to an automatic detection device and method of the geometric quality of a large-sized thin-plate metal workpiece. An overall image and a distance of a thin-plate workpiece are collected at a detection position and the collected image and distance information are transmitted to an image processing unit; the image processing unit obtains the number of processing holes and central positions of all holes, identifies arc and segment pixels, determines the pixel types and the numbers of all types of pixels, and calculates workpiece thickness information; if the hole number, theworkpiece thickness and the hole types meet requirements, a local sensing unit collected a workpiece sequence image and transmits the image to the image processing unit; the image processing unit processes a local sequence image and identifies dimension information and position information of the obtained pixels; and if the pixel dimensions and positions meet requirements, a detection result is outputted. According to the invention, the original image of a to-be-detected workpiece is collected and obtained by means of macro-micro combination and quality detection of the large-sized workpieceis realized; the detection precision is ensured; the restriction on the workpiece dimension is eliminated; and the detection range and the detection precision are improved.
Owner:SHENYANG JIANZHU UNIVERSITY
Method for simulating external heat flow of light inlet of high-altitude large-aperture optical remote sensor
The invention provides a method for simulating an external heat flow of a light inlet of a high-altitude large-aperture optical remote sensor. An absorption heat flow method based on an electric heater instead of an incident heat flow method based on a solar simulator is adopted. An economic, economic, high-realizable simulation method is provided for space heat flow simulation of a large-aperture optical remote sensor. An electric heater can be directly attached to a component provided with a radiant heat flow. Requirements of optical remote sensors with different apertures can be met and are not limited by the spot size of the solar simulator and the size of a vacuum environment simulation chamber. The problem of space heat flow simulation of a shade of a high-altitude large-aperture optical remote sensor is solved. The method is simple and effective, and is high in engineering realizability.
Owner:BEIJING RES INST OF SPATIAL MECHANICAL & ELECTRICAL TECH
Radiating modular structure of semiconductor package and manufacturing method thereof
InactiveCN101515550ANo size limitIncrease cooling areaSemiconductor/solid-state device detailsSolid-state devicesSemiconductor chipSemiconductor package
The invention relates to a radiating modular structure of a semiconductor package and a manufacturing method. At least one semiconductor semiconductor package comprising a chip carrying piece, a semiconductor chip arranged on the chip carrying piece, and a first radiating piece arranged on the semiconductor chip is provided, so that the semiconductor package is electrically connected to an external electronic device through the chip carrying piece; and then at least one second radiating piece is arranged on the first radiating piece of the semiconductor package, and the size of the second radiating piece is larger than that of the first radiating piece; therefore, the semiconductor package, the first radiating piece, the external electronic device and the second radiating piece are combined in a modular mode to improve the radiating efficiency of the semiconductor package.
Owner:SILICONWARE PRECISION IND CO LTD
Method for measuring flux of magnetic element and device thereof
InactiveCN104020426AEasy to operateReduce labor intensityMagnetic property measurementsNuclear magnetic resonanceMagnetic flux
The invention discloses a method for measuring flux of a magnetic element and a device thereof. The magnetic element to be detected is placed into Helmholtz coils. A magnetizing direction of the magnetic element to be measured is in the axial direction of the Helmholtz coils, and furthermore the magnetic element to be measured is arranged at right central part between a first coil and a second coil. After a flux meter is reset, the magnetic element is overturned for 180 DEG through an overturning mechanism and is kept still. An output value of the flux meter is read as a flux value of the magnetic element to be measured, thereby obtaining the flux value of the magnetic element to be measured. The method of the invention is advantageous in that: in the measurement process, defining of the magnetic field area of the Helmholtz coils is not required; and the flux value can be measured through overturning the magnetic element for 180 DEG by the overturning mechanism. Simple operation, low labor intensity and relatively high measurement efficiency are realized. The overturning mechanism can ensure same measurement condition and position of each magnetic element to be tested. Relatively high repeatability and high accuracy of the measured data are realized. Furthermore the method is not limited by the volume of the magnetic element.
Owner:NINGBO CANMANG TECH
Novel prefabricated direct-buried polyurethane spraying heat-preservation pipe production line and production process
InactiveCN109732957AAvoid high manufacturing costsImprove product qualityTubular articlesManufacturing engineeringConductor Coil
The invention discloses a novel prefabricated direct-buried polyurethane spraying heat-preservation pipe production line. The production line is composed of a flame preheating furnace, a shot blastingderusting machine, a pipe-inside blowing sweeping device, a polyurethane spraying system, a polyurethane layer rounding device, a polyurethane curing platform, a polyethylene winding system, a coating cooling system and a pipe end treating device which are arranged in proper sequence. The invention further discloses a novel prefabricated direct-buried polyurethane spraying heat-preservation pipeproduction process which comprises the steps of preheating, shot blasting, blowing sweeping, polyurethane spraying, rounding, curing, polyethylene layer winding, coating cooling and pipe end treating.By means of the novel prefabricated direct-buried polyurethane spraying heat-preservation pipe production line and the production process, the problems of uneven internal density, more cavities and detection difficulty of a polyurethane layer in existing heat-preservation pipe fabrication utilizing a pipe-in-pipe process are solved.
Owner:BC P INC CHINA NAT PETROLEUM CORP +2
Efficient graphene roll-to-roll continuous growth equipment and preparation method
PendingCN111072020AQuality improvementImprove consistencyGrapheneChemical vapor deposition coatingEngineeringGraphite
The invention discloses efficient graphene roll-to-roll continuous growth equipment and a preparation method. The graphene roll-to-roll continuous growth equipment comprises a feeding cabin (3), a growth cabin and a receiving cabin (4), wherein the feeding cabin (3) is provided with more than two driven rollers (8), the receiving cabin (4) is provided with more than two driving rollers (9), an isolation support plate (11) is arranged in the growth cabin, the isolation support plate (11) divides the growth cabin into more than two growth chambers, the growth cabin comprises a graphene growth area, and the graphene growth area is provided with a heating device. The graphene preparation method provided by the invention comprises a step of simultaneously placing a plurality of metal substrateson a plurality of driven rollers (8) and a driving roller (9), and a step of setting the driving roller to be the same or different. The equipment and the method disclosed by the invention have the advantages of high quality, good consistency, no size limitation and the like of graphene prepared by the existing equipment, the production efficiency of graphene is further improved, and the energy consumption for preparing graphene per unit area is reduced.
Owner:GRAHOPE NEW MATERIALS TECH INC
Grid plate design method of air bath device, grid plate, air bath device and photoetching machine
ActiveCN110941146AUnlimited useFlow homogenizationPhotomechanical exposure apparatusMicrolithography exposure apparatusEngineeringMechanical engineering
The invention belongs to the technical field of photoetching, and particularly discloses a grid plate design method of an air bath device, a grid plate, the air bath device and a photoetching machine.The grid plate design method provided by the invention comprises the following steps: S1, determining initial design parameters of a grid plate, wherein the grid plate comprises a plurality of grids;S2, establishing a fluid simulation model of the air bath device according to the design parameters; S3, calculating to obtain fluid data of a fluid outlet; S4, judging whether the fluid data meets apreset condition or not, if yes, executing S5, and if not, executing S6; S5, adjusting the ventilation area of each grid or part of grids according to the fluid data, updating the design parameters and returning to S2; and S6, obtaining the optimal ventilation area of each grid. The grid plate is formed by adopting the grid plate design method, the air bath device comprises the grid plate, and the photoetching machine comprises the air bath device. Flowing uniformity and stability of the fluid outlet are improved.
Owner:SHANGHAI MICRO ELECTRONICS EQUIP (GRP) CO LTD
Nonferrous metal part micro-arc oxidation protective agent and local protection method
The invention discloses a nonferrous metal part micro-arc oxidation protective agent comprising silicon rubber, polyvinyl butyral PVB and epoxy resin, wherein the mass ratio of the silicon rubber to the polyvinyl butyral PVB to the epoxy resin is 4-8:2-4:0.5-1. The nonferrous metal part micro-arc oxidation protective agent can resist impact of instant high temperature and continuous discharge fora long time and protects the area needing local protection on the part during micro-arc oxidation. The invention further discloses a local protection method for nonferrous metal part micro-arc oxidation. The local protection method comprises the steps of part surface pretreatment, protective agent preparation, part local protection treatment, micro-arc oxidation treatment and cleaning, and finallymicro-arc oxidation local protection of the part is completed. The nonferrous metal part micro-arc oxidation protective agent is not limited by the shape and size of the part, the surface of the partneeding protection is selectively protected from being oxidized by electrolyte, so that the original machining state of the part is prevented from being changed.
Owner:CSIC NO 12 RES INST
Inner clamping type hoisting device for braking drum of automobile
InactiveCN104495604ANot limited by sizeImprove lifting efficiencyLoad-engaging elementsMechanical engineeringPotential risk
The invention relates to an inner clamping type hoisting device for a braking drum of an automobile. The inner clamping type hoisting device is used for hoisting the braking drum. The hoisting device comprises a hoisting shaft, clamping plates, a sleeve, a pulling rod, a locating ring, hinge pins, a hoisting ring and a handle, wherein the hoisting ring for hoisting the hoisting shaft is mounted at the upper end of the hoisting shaft; two clamping plates with symmetric positions are mounted at the lowermost end of the hoisting shaft; the sleeve and the locating ring sleeve the hoisting shaft; the sleeve can be mounted and located through the locating ring; the pulling rod is arranged between the sleeve and the clamping plate; the sleeve and the pulling rod as well as the pulling rod and the clamping plate are respectively connected through the hinge pins; the sleeve and the clamping plates are integrally connected through the pulling rod; the clamping plates at two sides are overturned up and down by using a central line of the hoisting shaft as an axis and are extended and clamped into an inner circle of the braking drum so as to hoist the braking drum. The inner clamping type hoisting device enters and is clamped inside the inner circle of the braking drum; after hoisting, the hoisting device can be used for automatically adjusting the center of the gravity; the operation is simple and convenient, the labor intensity is alleviated, the hoisting is stable, and falling can be avoided during hoisting, so that the potential risk can be eliminated.
Owner:吴俊豪
Method for preparing FeSe superconducting thin film by post-selenization treatment
ActiveCN102534471BImprove superconductivityIncrease stressVacuum evaporation coatingSputtering coatingSputteringOptoelectronics
The invention relates to a method for preparing a FeSe superconducting thin film by post-selenization treatment;in the method, a FeSe thin film is deposited by reactive sputtering; the method comprises the following steps: performing surface treatment of a substrate; sputtering and depositing a FeSe thin film on the substrate by reactive sputtering film deposition technology; putting both the FeSe thin film and amorphous simple substance selenium in a quartz tube, performing vacuum sealing; putting the sealed quartz tube in a heating furnace, heating to perform a selenization reaction to obtain the FeSe thin film. With the invention, the stress generated after selenization treatment is significantly reduced; impurity phases, air pores and cracks generated as a result of excessive distortion energy are reduced; and excellent superconductive performance of the thin film is brought into play. Additionally, when compared with commonly-used pulse laser deposition methods, the preparation method combining reactive sputtering with improved selenization treatment has great advantages in cost control, and is not restricted by dimensions.
Owner:GRIMAT ENG INST CO LTD
Centrifugal emulsion online filtering system
InactiveCN111481985AStrong applicabilityStrong processing effectMoving filtering element filtersPhysicsSolvent
The invention discloses a centrifugal emulsion online filtering system, which relates to the field of emulsion filtering systems, the system comprises a device body, liquid inlets are formed in the two sides of the device body, a liquid outlet is connected to one end of the device body, a mounting bin is connected to the top end of the device body, a connecting bin is connected to one end of the mounting bin, a first motor is mounted at the top end of the mounting bin, and a first bevel gear is connected to the output end of the first motor. The system comprises a device main body, a liquid inlet, a liquid outlet, a mounting bin, a connecting bin, a second motor, a driving wheel, a driven wheel, a transmission wheel, teeth, a filter cartridge, a sliding block and a connecting cylinder, thedevice can realize continuous circulating emulsion oil-residue separation, centrifugal separation can be realized after emulsion enters from the liquid inlet, only solid-liquid separation is realized, the components and proportion of a liquid solvent are not influenced, the device has strong applicability and treatment effect, is not limited by particle size, and is safe and environment-friendly,and no chemical reagent is introduced into the device.
Owner:宝胜(宁夏)线缆科技有限公司
Preparation method of high-strength and high-toughness thin strip aluminum of ultra-fine structure
ActiveCN110983213AHigh strengthUniform tissueTemperature control deviceWork heating devicesIndustrial equipmentShearing (manufacturing)
The invention discloses a preparation method of high-strength and high-toughness thin strip aluminum of an ultra-fine structure, and the method comprises the following steps: homogenizing of an aluminum casting blank, rough rolling, strong shearing, deforming and rolling, asynchronous and synchronous mixing at a high speed, intermediate rolling, finish rolling and the like. The average grain sizeof the prepared thin strip aluminum of the ultra-fine structure is less than 500 nanometers, and the thin strip aluminum has high strength and good ductility and toughness. Compared with the prior art, the prepared thin strip aluminum is long in service life, simple in production process, low in manufacturing cost, capable of being achieved through common industrial equipment, high in production efficiency and convenient to apply industrially.
Owner:上交(徐州)新材料研究院有限公司
A process for recovery of aluminum, potassium and gallium through rapid reduction and desulfurization of alunite at high temperature
ActiveCN104313346BReduce manufacturing costSimple processProcess efficiency improvementDecompositionDissolution
Owner:BEIJING GENERAL RES INST OF MINING & METALLURGY
Large-scale crane hook set
InactiveCN101492141BAdjust skew issuesReduce frictionLoad-engaging elementsThrust bearingEngineering
The invention discloses a large-scale crane hook group, which mainly comprises pulleys, pulley shafts, a spherical roller bearing, a spherical roller pushing force bearing, hook nuts and a shedding preventing chain, and the large-scale crane hook group also comprises pulley supporting frames, a hinge shaft I, a balance beam, a hinge shaft II, a hook shaft, an upper part of a hook body and the hook body, wherein the pulleys are divided into two groups by two pulley shafts, and each group is connected with one pulley supporting frame to form two pulley groups; the pulley supporting frames are respectively connected with the balance beam through the hinge shaft I, the balance beam is connected with the hook shaft through the hinge shaft II, the lower part of the hook shaft is connected with the hook nuts through screw threads, and the upper part of the hook body is connected to the hook body in a welding form. The large-scale crane hook group solves the problem of deflexion caused by the change in length of a steel wire rope and makes the processing and the assembly of large-scale forging hook shafts and large-scale forging hook bodies realize simply and easily. The large-scale crane hook group has the advantages of simple structure style, convenient assembly and low cost.
Owner:DALIAN HUARUI HEAVY IND GRP CO LTD
Polydimethylsiloxane-double-scale silica composite superhydrophobic coating and its forming method
The invention relates to a polydimethylsiloxane-dual scale silicon dioxide composite super-hydrophobic coating and a forming method thereof. The composite super-hydrophobic coating comprises a polydimethylsiloxane layer and silicon dioxide particles uniformly dispersed on the polydimethylsiloxane layer. The composite super-hydrophobic coating is obtained by a method of curing a polydimethylsiloxane coating material containing large-particle-size silicon dioxide nanoparticles and then firing the coating, and the composite super-hydrophobic coating is of a secondary rough surface structure. According to the invention, the durability of the coating is strengthened, and the super-hydrophobic performance of the surface is recovered by a method of polishing or re-firing, so as to keep the excellent performance of the coating for a long time.
Owner:JILIN UNIV
Large-size single crystal diamond epitaxial layer stripping method
PendingCN114318523AReduce lossNot limited by sizePolycrystalline material growthAfter-treatment detailsPhysical chemistrySingle crystal
The invention discloses a large-size monocrystal diamond epitaxial layer stripping method, and belongs to the technical field of crystal growth. The method comprises the following steps: depositing a mask material on the surface of a substrate, depositing a protective layer material, etching a mask pattern by laser, obtaining a diamond substrate with a patterned mask material, depositing and growing a diamond epitaxial layer, soaking and stripping and the like. According to the technical scheme, the epitaxially-grown monocrystal diamond film is naturally peeled off due to stress difference in the cooling process, and epitaxially-grown crystals are high in quality, small in material loss and not limited by the material size.
Owner:JILIN UNIV +1
Bristle boiling, baking system and bristle processing technology
The invention discloses a bristle boiling and baking system. The bristle boiling and baking system comprises a bristle boiling cookstove and a bristle baking room. The bristle boiling cookstove includes a pot body, a blower and a plurality of gas stoves, the pot body is a double-layer rectangular tank, there is a gap between the inner layer and the outer layer to form a closed combustion chamber,the four walls of the tank are brick walls, and the inner layer is a heat-conducting waterproof layer; the gas stoves are arranged in the combustion chamber, the blower is arranged beside the pot body, and air outlet branch pipes of the blower are arranged below furnace ends of the gas stoves; the bristle baking room includes a room, multiple fireproof racks and multiple gas stoves, the room is equipped with a fire door, bar-shaped pits are arranged in the middle of the room and extend outside the fire door, the gas stoves are placed in the pits, the ground on both sides of the pits graduallyrises to form a slope, a row of track railing piers is arranged on the side of the slope away from the pits, metal cover plates are covered on the pits, track railing piers are arranged on the left and right sides of the metal cover plates, and rails are arranged on the track frame piers. The invention also discloses a process for processing the bristle by using the system.
Owner:石柱土家族自治县渝虎土畜产有限公司
Plant cultivation mist plough system and small-scale plant factory utilizing system
PendingCN108124662AReduce noiseEasy to moveClimate change adaptationGreenhouse cultivationGrowth plantPlant factory
The invention relates to a plant cultivation mist plough system and a small-scale plant factory utilizing the system. The plant cultivation mist plough system includes a cultivation area and an equipment control area; the cultivation area includes multiple cultivation boxes and a nutrient liquid box containing nutrient liquid demanded in growth of plants; the cultivation boxes are stacked layer bylayer above the nutrient liquid box, a plant growth lamp group is arranged above each cultivation box, a planting plate used for planting the plants is arranged on the upper portion of each cultivation box, multiple sprayers are arranged in each cultivation box, and multiple water returning holes used for recovering the nutrient liquid are formed in the bottoms of the cultivation boxes; the equipment control area includes an automatic suction pump and a control device, the automatic suction pump sucks the nutrient liquid from the nutrient liquid box and conveys the nutrient liquid to the sprayers through water outlet pipes, and the control device controls the spraying concentration and spraying time of the nutrient liquid according to the growth demand of the plants. The small-scale plantfactory includes a cultivation area, an equipment control area, a framework, an air shower purification room and a ventilation system.
Owner:淮北合鸣农业装备有限公司
A kind of polishing fluid for improving the surface of ABS fused deposition molding and preparation method thereof
ActiveCN110283535BShorten polishing cycleNot limited by sizePolishing compositionsPolymer sciencePolymethyl methacrylate
The invention discloses a polishing solution for improving the surface of ABS fused deposition molding, which consists of the following components according to mass percentage: 30%-40% of polymethyl methacrylate, 60%-70% of the previous mixed solution, the above-mentioned components The sum of the mass percentages of the components is 100%. The invention also discloses a preparation method of the polishing liquid used for improving the surface of the ABS fused deposition molding, which is prepared by heating and mixing. The polishing liquid for improving the surface of ABS fused deposition molding can quickly form a film on the surface of the workpiece to be treated, and can fill the surface depressions to achieve smoothness while melting the surface protrusions of the workpiece, and has high bonding strength and no friction. poisonous, shortening the polishing cycle of the workpiece; the preparation method of the polishing liquid for improving the surface of ABS fused deposition molding is simple in operation, strong in practicability and high in preparation efficiency.
Owner:SHAANXI SCI TECH UNIV
A preparation method of nano-rod-shaped zinc oxide and its application in the preparation of air-conditioning ventilation ducts
ActiveCN107673398BReduce maintenance costsEasy to cleanLiquid surface applicatorsAntifouling/underwater paintsFiltrationGlycerol
The invention discloses a preparation method of nanometer rod-shaped zinc oxide and an application thereof in preparing a ventilation pipeline of an air conditioner. The method comprises the followingsteps: firstly, preparing an alkali solution from glycerol of sodium borohydride; dripping the alkaline solution into a zinc acetate dihydrate solution or a zinc nitrate hexahydrate solution at a normal temperature and pressure to generate a gel, continuing titration to generate a white precipitate, and performing aging; performing suction filtration and washing on the aged white precipitate, andperforming centrifugation and vacuum drying at a room temperature to obtain nanometer rod-shaped zinc oxide powder. The nanometer rod-shaped zinc oxide particle prepared by the method has the advantages of uniform size, rod-like structure and no defect on the surface, and can be used for preparing a plastic ventilation pipeline or a coating sprayed on the surface of a metal pipeline to enhance self-cleaning and antibacterial functions of plastics or the metals.
Owner:北京振兴华龙制冷设备有限责任公司
Self-steady flow type energy storage pool
ActiveCN112815418AUniform accessImprove uniformityLighting and heating apparatusSpace heating and ventilation detailsPistonMechanical engineering
The invention discloses a self-steady flow type energy storage pool, and relates to the technical field of energy storage equipment. The self-steady flow type energy storage pool specifically comprises a box body, wherein two water distributors are symmetrically arranged in the box body, and the water distributors sequentially divide the inner space of the box body into a hot water transition area, an energy storage area and a cold water transition area which are not communicated with one another from top to bottom. Each water distributor comprises fixed partition plates and water distribution assemblies which are arranged at intervals, each water distribution assembly comprises a water distribution barrel, and a plurality of first flow channels and second flow channels which are arranged at intervals are evenly distributed on each water distribution barrel in the axis direction. A valve core is arranged in each water distribution barrel, each valve core comprises a piston part and a connecting rod part which are arranged at an interval, an air passage is arranged in each valve core, an air bag sleeves outside each connecting rod part, and the position, positioned in the corresponding air bag, of each connecting rod part is provided with an air hole communicated with the corresponding air passage. One-way valves are arranged on first water filling pipes, first water discharging pipes, second water filling pipes and second water discharging pipes. The energy storage pool can reduce the thickness of a thermocline and ensure the stability of the thermocline.
Owner:华春新能源股份有限公司
Fuel vaporizing combustion device with high firepower and long service life
The invention relates to a fuel vaporizing combustion device with high firepower and long service life. The fuel vaporizing combustion device comprises a combustion portion and a heat dissipation mechanism, the heat dissipation mechanism comprises a distribution ring, an upper shell and a lower shell, openings are formed at the tops of the upper shell and the lower shell, an air inlet hole communicated with a fan is formed at the bottom of the lower shell, the distribution ring is assembled in the lower shell, the bottom of the upper shell is connected with the top of the distribution ring and assembled at the top of the lower shell, the combustion portion is communicated with the air inlet hole and assembled inside the top of the upper shell, the inner diameter of the middle of the distribution ring is smaller than that of the bottom of the distribution ring, and a plurality of vent holes are formed in the side wall of the distribution ring close to the bottom edge. By the aid of the distribution ring, all parts of the combustion device in use are continuously cooled, temperature rise of the parts is effectively decelerated, the service lives of the parts are effectively prolonged, the combustion device can be continuously used for six hours, and continuous usage time of the combustion device is obviously prolonged.
Owner:QUANZHOU XINRAN ENVIRONMENTAL PROTECTION ENERGY
Chip packaging structure
PendingCN114695336AWith high-efficiency cooling functionSimple processSemiconductor/solid-state device detailsSolid-state devicesSemiconductor chipEngineering
A chip package structure includes: at least one semiconductor chip having a signal processing function; a substrate, wherein the semiconductor chip is arranged on the substrate; the at least one heat transfer patch is arranged on the substrate; and an encapsulation material encapsulating the substrate, the heat transfer patch and the semiconductor chip, in which the heat transfer patch forms at least one heat transfer path.
Owner:RICHTEK TECH
Fully-perforated microwave absorbing material and preparation method thereof
ActiveCN103044704BImprove cooling effectHigh strengthChloropene polymer coatingsPolyurea/polyurethane coatingsWater basedTO-18
The invention relates to a fully-perforated water-resistant microwave absorbing material and a preparation method thereof. The fully-perforated water-resistant microwave absorbing material comprises sponge of which one or two surfaces are provided with a microwave absorbing solution layer, wherein the microwave absorbing solution consists of the following components in percentage by mass: 25 to 35 percent of a microwave absorbent, 50 to 55 percent of a water-based adhesive, 14 to 25 percent of a flame retardant, and 0.1 to 0.3 percent of a filling material. During preparation, by adopting a spraying technology, the water-based microwave absorbing solution is sprayed on one or two surfaces of the fully-perforated sponge, the spraying quality is controlled, and the sponge is dried to ensure that the fully-perforated sponge material has a broadband microwave absorption performance. Test results show that the vertical reflectivity of the fully-perforated water-resistant microwave absorbing material with the thickness of 2 centimeters is less than -12dB in a frequency range of 2 to 18 GHz. The microwave absorbing solution mainly comprises the materials including the microwave absorbent, the water-based adhesive, the flame retardant, the filling material and the like, and the fully-perforated water-resistant microwave absorbing material is prepared by adopting spraying.
Owner:NANJING BOPING ELECTRONICS TECH CO LTD
A method for surface treatment of abs plastic fusion deposition molding
ActiveCN110293047BShorten polishing cycleNot limited by sizeAdditive manufacturing apparatusLiquid surface applicatorsSurface preparationStyrene
The invention discloses a surface treatment method for fused deposition molding of ABS (acrylonitrile-butadiene-styrene) plastics. The surface treatment method comprises the following steps of: firstly, preparing polishing liquid, then uniformly applying the polishing liquid to the surface to be treated of a workpiece, and airing to complete the surface treatment. The surface treatment method forfused deposition molding of ABS plastics shortens the polishing period of the workpiece, has wide applicability, high polishing precision and good surface quality, and is not restricted by the size ofparts.
Owner:SHAANXI SCI TECH UNIV
A circulating fluidized bed reaction device for alkane dehydrogenation-cracking to olefins
ActiveCN109499485BNot limited by sizeLow reaction temperatureHydrocarbonsChemical recyclingAlkanePtru catalyst
A reaction device for catalytic dehydrogenation-cracking of alkanes to produce olefins, comprising a reactor for catalytic dehydrogenation-cracking and a settling section of the reactor, the settling section of the reactor is located on the upper part of the reactor, wherein the reactor includes a dehydrogenation tank A phase reaction section and a cracking reaction section, the cracking reaction section is located below the dehydrogenation dense phase reaction section, and the diameter of the cross section of the cracking reaction section is smaller than the diameter of the cross section of the dehydrogenation dense phase reaction section. The reaction device combines dehydrogenation cracking and catalytic dehydrogenation, and the overall reaction temperature and catalyst regeneration temperature are greatly reduced. The diameter of the reaction device gradually shrinks along the fluid flow direction to reduce the secondary conversion of olefins caused by back-mixing.
Owner:CHINA UNIV OF PETROLEUM (EAST CHINA)
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