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292results about How to "Guaranteed porosity" patented technology
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Method and device for automatically and uniformly loading materials into white spirit steaming barrel
The invention provides an automatic and uniform material loading method and an automatic and uniform material loading device which is used in the process of producing white spirit, and aims to achieve effects that the process which is manually performed in the prior art is completely or partially replaced by the method, the uniformity and the looseness of loading fermented grains are simultaneously guaranteed, and the shortcomings of the prior art are overcome. The automatic and uniform material loading device comprises a steaming barrel, a loading device and a uniformizing device, wherein the steaming barrel comprises a steaming barrel body and a bottom pot which are separable; the bottom of the steaming barrel is supported by a rotary supporting piece and can rotate; the loading device consists of a material conveying device, a charging controller and a scattering device; the uniformizing device consists of an agravic levelling device which is provided with a stirring paddle and liftable. By matching the steaming barrel, the loading device and the uniformizing device, materials are automatically loaded, and the uniform and stable looseness of loading the materials is guaranteed.
Owner:CHINA NAT RES INST OF FOOD & FERMENTATION IND CO LTD +2
Method for preparing silicon-aluminum aerogel by using fly ash as raw material through normal pressure drying
The invention discloses a method for preparing silicon-aluminum aerogel by using fly ash as a raw material through normal pressure drying, which comprises the following steps of: mixing, grinding and calcining the fly ash and sodium carbonate to enable acidic oxides and amphoteric oxides in the fly ash to react with the sodium carbonate, then dissolving a sintered material with hydrochloric acid, and carrying out suction filtration to obtain a filtrate, i.e. silicon-aluminum sol; settling and aging the silicon-aluminum sol to form silicon-aluminum gel; soaking with circulating water to remove chloride ions; soaking with an ethanol solvent instead of water; soaking with an organosilicon compound as a surface hydrophobic agent for surface hydrophobic treatment; and preparing the silicon-aluminum aerogel through normal pressure drying. The invention uses the industrial waste fly ash as the raw material to replace an organosilicon source with high price and a certain toxicity, and uses normal pressure drying to replace supercritical drying, so the safety performance is greatly enhanced, the production cost is greatly lowered; and the method has simple process and convenient operation and is suitable for large-scale production. The prepared silicon-aluminum aerogel can be widely applied to the fields of heat insulating materials and the like.
Owner:SOUTHWEAT UNIV OF SCI & TECH
Cable system construction method of spatial self-anchored rope-suspension bridge
ActiveCN101418542AGuaranteed porositySimple construction methodBridge erection/assemblySystem constructionEngineering
The invention discloses a method for constructing a cable system of a spatial self-anchoring type suspension bridge. The method is characterized in that a cat path and a main cable are arranged on the vertical surface to form a hollow cable type; and the completed bridge linearity of the main cable is formed through traversing the main cable and stretching slings. Through the proposal, the method has obvious technical characteristics: 1. the main cable is arranged on the vertical surface and is favorable for braiding the cable; 2. the cable tightening operation is carried out on the vertical surface so as to be favorable for tightening the cable and ensuring the gap rate; and 3. firstly, a temporary inhaul cable is used to traverse the main cable in order that the main cable linearity is close to a completed bridge state; and secondly, the sling is stretched and is favorable for controlling the spatial angle of a cable clip and positioning the sling in a transverse oblique anchor tube. The method has the advantages that the construction method is simple, is favorable for the braiding and molding of the main cable and the spatial positioning of the angles of the cable clip and the slings and realizes the completed bridge linearity of the main cable.
Owner:SHANGHAI MUNICIPAL ENG DESIGN INST GRP
Lead plaster for low temperature resistant lead storage battery for electric scooter and preparation method of lead plaster
ActiveCN103779557AInhibition of \"shrinkage\"Inhibit \"passivation\"Cell electrodesFiberElectrical battery
The invention relates to a lead plaster for a low temperature resistant lead storage battery for an electric scooter and a preparation method of the lead plaster. The lead plaster comprises an anode lead plaster and a cathode lead plaster, wherein the anode lead plaster comprises the following components in parts by weight: 950-970 parts of lead powder, 80-86 parts of 1.3-1.4g / cm<3> sulfuric acid, 110-125 parts of pure water, 3.0-4.0 parts of colloidal graphite, 30-50 parts of red lead, 1.0-1.5 parts of tin sulfate, 0.5-1.0 part of sodium sulfate and 0.7-0.9 part of short fiber; the cathode lead plaster comprises the following components in parts by weight: 1000 parts of lead powder, 75-81 parts of 1.3-1.4g / cm<3> sulfuric acid, 105-120 parts of pure water, 0.6-0.8 part of short fiber, 6.0-7.0 parts of barium sulfate, 1.0-1.5 parts of Norway lignin, 4.0-5.0 parts of humic acid, 3.0-5.0 parts of acetylene black and 1.0-1.5 parts of semi-carbonized saw dust. According to the lead plaster and the preparation method thereof, the acceptance performance when the battery is charged at low temperature is improved and the discharge capacity is increased; the lead plaster disclosed by the invention is applicable to low-temperature environment and is especially suitable for northeast and northwest regions in China.
Owner:河北超威电源有限公司
Novel ventilated slow-resilience sponge
The invention mainly discloses a novel ventilated slow-resilience sponge, in particular relates to a ventilated slow-resilience sponge which ensures the aperture ratio of a product by adjusting raw materials and the proportioning of a product, so that the aperture ratio of the product is improved to over 95 percent without using a pore-forming agent or pore-forming silicone oil, and the ventilation property of the product is improved. When the ventilated slow-resilience sponge is used, a human body contacts the product and obviously feels that the product is floppy; and the product is more comfortable after being used for a long time, particularly in muggy summer.
Owner:JIANGSU HEALTHCARE TECH CO LTD
Semi-solid lithium flow battery reactor, battery system and working method
ActiveCN107171002ABridging short circuit avoidanceGuaranteed porosityRegenerative fuel cellsCollectors/separatorsLithiumEngineering
The invention provides a semi-solid lithium flow battery reactor. The semi-solid lithium flow battery reactor comprises a battery frame and an electrode cavity. The battery frame is a cuboid with the hollow interior. The electrode cavity comprises an anode cavity and a cathode cavity. The electrode cavity is filled with continuously or intermittently flowed electrode suspension liquid. A straight-through insulation cavity is installed between the anode cavity and the cathode cavity. The height of the insulation cavity is 0.1-1 mm, and the interior is filled with intermittently flowed electrolyte. The invention further provides an electrolyte circulating system based on the battery reactor and a working method. Through the pressure of the electrolyte in the insulation cavity to a porous current collector is regulated by the electrolyte circulating system, the situation of the battery micro-short or polarization increase can be solved, the battery polarization can be effectively reduced, and the battery safety is improved.
Owner:南京竞予能源有限公司
Composite film with high-temperature resistance layer, preparation method thereof and battery
ActiveCN103078075AHigh peel strengthAvoid powder sheddingCell component detailsComposite filmTemperature resistance
The application relates to the field of lithium batteries, and particularly discloses a composite film with a high-temperature resistance layer, a preparation method thereof and a battery. The composite film disclosed by the application comprises a base film and the high-temperature resistance layer, wherein the base film is a porous thermoplastic resin film; the high-temperature resistance layer is an inorganic ceramic layer containing ceramic particles; the inorganic ceramic layer is fixed on at least one surface of the porous thermoplastic resin film by polymerization; and the peel strength of the porous thermoplastic resin film and the inorganic ceramic layer is larger than or equal to 25 N / m under the condition of 180 DEG C. The invention further discloses the preparation method and the application of the composite film and the battery adopting the composite film. According to the application, the peel strength of inorganic ceramic layer and the porous thermoplastic resin film is greatly improved so as to effectively avoid a powder falling phenomenon of the inorganic ceramic particles in the composite film. Meanwhile, the composite film has excellent high temperature resistance performance, and can reduce battery short circuit phenomena caused by heat shrinkage of the composite film in the application.
Owner:SHENZHEN ZHONGXING NEW MATERIAL TECH CO LTD
Decellularized blood vessel matrix gel, preparation method therefor and applications thereof
InactiveCN103705542AGood shaping effectGuaranteed uniformityAerosol deliveryOintment deliveryDigestionBlood vessel
The invention relates to a kind of decellularized blood vessel matrix gel, a preparation method therefor and applications thereof. The preparation method is as follows: first, after blood vessel outer membranes and anadesma are removed, the blood vessels are cut into blood vessel pieces, the blood vessel pieces are subjected to decellularized treatment in a TritonX-100 solution, then subjected to freeze drying, smashed into powder, and filtered with a 60-mesh screen, and decellularized blood vessel matrix powder is obtained; second, the decellularized blood vessel matrix powder is placed in a hydrochloric acid solution containing pepsin with a concentration of 0.09-0.11%, and subjected to digestion for 66-78h, a sodium hydroxide solution is added to neutralize hydrochloric acid, then PBS is added to balance ion concentration, finally, the gel solution is placed in an incubator with a temperature of 37 DEG C for gel forming. The decellularized blood vessel matrix gel has good molding capability and mechanical properties, the interior is loose, the gel has certain poriness, and the collagen fiber has appropriate diameters and good stability. The gel can meet requirements of preparation of medicines treating ischemic diseases, support materials of tissue engineering and / or cell culture.
Owner:SHANGHAI CHILDRENS MEDICAL CENT AFFILIATED TO SHANGHAI JIAOTONG UNIV SCHOOL OF MEDICINE
Preparation method and application of polyolefin/nanocrystal cellulose composite diaphragm
InactiveCN105185940AImprove hydrophilicityImprove bindingCell seperators/membranes/diaphragms/spacersPorous membraneChemistry
The invention relates to the field of diaphragm materials and particularly relates to a preparation method and application of a polyolefin / nanocrystal cellulose composite diaphragm. The preparation method comprises the following steps: (1) preparing a nanocrystal cellulose sodium dispersion liquid; (2) performing surface pretreatment on a substrate membrane; and (3) performing coating treatment on a modified porous membrane. The polyolefin / nanocrystal cellulose composite diaphragm is applied to the field of lithium ion batteries. The length of nanocrystal cellulose is regulated by virtue of changing the formula of acid hydrolysis, so that the porosity and ionic conductivity of the composite diaphragm are improved. By virtue of applying an LBL technology, the thickness of the composite diaphragm can be changed by virtue of regulating the times of coating the surface of the modified porous membrane, and the nanocrystal cellulose has favorable mechanical strength, so that the puncture-resistant strength and tensile strength of the composite diaphragm and the heat resistance of the substrate membrane are greatly improved.
Owner:XUCHENG FUJIAN SCI & TECH
Mold for preparing accellular small intestine submucosa matrix material
ActiveCN103272277AGuaranteed porosityHigh porositySurgeryProsthesisPorosityCell-Extracellular Matrix
The invention provides a mold for preparing an accellular small intestine submucosa matrix material, which is composed of a base and a pressure screen, wherein the base is a square plate with pins on four sides, and the pins are perpendicular to the square plate; the pressure screen is a square frame with a square frame structure or reticular structure inside; and the length of the four sides of the pressure screen is 1-3 cm smaller than that of the base. When being used for preparing the accellular porcine small intestine submucosa matrix material, the mold can not compress the space structure of the accellular porcine small intestine submucosa matrix material or destroy the three-dimensional structure of the natural extracellular matrix, and can ensure the porosity of the prepared accellular porcine small intestine submucosa matrix material.
Owner:BEIJING BIOSIS HEALING BIOLOGICAL TECH
'Whole clear' process of brewing aroma type white spirit
ActiveCN1733888AReduce dosageReduce furfural contentAlcoholic beverage preparationTissue/virus culture apparatusEngineeringDrinking straw
The invention discloses a technique to brew aromatic wine, based on traditional technique, which relates to reform and innovate to draw water, steam supplementary material, distill to obtain wine, and put dreg into cellar clear layered. Wherein, the said four steps are technical core; the cellar is constructed on bottom of pond near wall with inner wall fixed and cover on its head with center hole inserted hollow pipe; after putting dreg into cellar, sealing the pipe and cellar for fermentation; before putting out, stripping off the yellow mud to show pipe mouth, and taking out seal; inserting sucker to draw the yellow water in cellar by connected pump as possible as far; mixing, obtaining wine, storing in cellar; all processes with Zeng(traditional measuring tool) as unit. The method can decrease labor strength, save material, and increases wine quality.
Owner:SICHUAN TUOPAI SHEDE WINE
Method for preparing anode of solid oxide fuel cell by using immersion method
InactiveCN102332588AWide variety of sourcesImprove conductivityCell electrodesAir atmospherePorosity
The invention discloses a method for preparing an anode of a solid oxide fuel cell by using an immersion method, belongs to the method for preparing the anode of a fuel cell, and solves the problem of easiness in performance weakening caused by low stability and easiness in aging of the conventional anode, which is prepared by using the immersion method, of the solid oxide fuel cell. The method comprises the following steps of: 1, preparing immersion liquid; 2, adding the immersion liquid into a porous anode supporting body, and roasting; 3, repeating the step 2, and sintering in an air atmosphere; and 4, restoring, and thus obtaining the anode of the solid oxide fuel cell. The method has the advantages that: selectable raw material sources are wide; a preparation process is simple; expensive experimental instruments are not required; large-scale application can be realized; the stability of the anode, which is prepared by using the immersion method with a dispersing agent, of the solid oxide fuel cell is improved; the electric conductivity and catalytic performance of the anode can be improved; porosity can be guaranteed by immersion of the porous anode supporting body; and fuel gas can smoothly reach the anode and an electrolyte interface for reaction, and generated water is drained.
Owner:HARBIN INST OF TECH
Nitrogen-containing tridentate ligand organic microporous polymer material as well as preparation and application thereof
ActiveCN104211928AEasy to prepareEasy to operateCatalyst carriersOrganic compound preparationBenzimidazoleTriptycene
The invention provides a nitrogen-containing tridentate ligand organic microporous polymer material as well as preparation and an application thereof and particularly provides an organic porous polymer which has a triptycene structural unit and a 2, 6-di(2-benzimidazolyl) structural unit. The triptycene structural unit and the 2, 6-di(2-benzimidazolyl) structural unit have the arrangement mode shown in a formula I. The organic porous polymer provided by the invention is a good adsorbing material and catalyst-loading material and has a good application prospect in metal catalyst loading, particularly noble metal loading.
Owner:SHANGHAI INST OF ORGANIC CHEMISTRY - CHINESE ACAD OF SCI
Preparation method of ceramic filtration supporter
ActiveCN101948316AGuaranteed apertureGuaranteed porosityDispersed particle filtrationFiltration separationPore diameterMetallurgy
The invention relates to a preparation method of a ceramic filtration supporter for the filtering dust removal of high temperature gas. The preparation method comprises the steps of mixing materials, formation and firing, the materials include aggregate, high temperature binding agent and pore forming agent, wherein the aggregate is spherical granule aggregate, the formation adopts isostatic compaction with the formation pressure being controlled in a range from 40 to 150 MPa and the firing temperature being controlled in a range from 1000 to 1300 DEG C, and the heat is preserved for 2 to 3 hours. The resultant ceramic filtration supporter has appropriate pore diameter and porosity, good gas permeability, high strength and good overall properties.
Owner:SHANDONG RES & DESIGN ACADEMY OF IND CERAMICS
Method for encapsulating high-power IGBT device through performing non-pressure low-temperature sintering on nano silver soldering paste
InactiveCN104392942AImprove work efficiencyExtended service lifeSolid-state devicesSemiconductor/solid-state device manufacturingScreen printingVoid ratio
The invention relates to a method for encapsulating a high-power IGBT device through performing non-pressure low-temperature sintering on nano silver soldering paste. The method includes the following steps that: the nano silver soldering paste is printed on a welding surface of a lining plate, the shape of the printed nano silver soldering paste is cross-shaped; a chip is arranged on the nano silver soldering paste which has been subjected to steel screen printing molding; and a heating stage is set to temperature from 250 DEG C to 270 DEG C, and sintering molding is performed. With the method adopted, void ratio can be lower than 2%. The use performance of the high-power IGBT module encapsulated through adopting the method can be improved, and encapsulation process can be simplified, and at the same time, it can be ensured that the adhesion strength of the chip which is higher than 30MP can satisfy use requirements in working, and it can be also ensured that a soldering paste layer has lower void ratio; and the work efficiency of the high-power IGBT module encapsulated through adopting the method can be improved, and the service life of the high-power IGBT module can be prolonged.
Owner:TIANJIN UNIV
Preparation method for water-repelling grease-proofing easy-ash-removal filter material
Owner:JIANGSU DINGSHENG FILTER BAG CO LTD
Mold for preparing accellular small intestine submucosa matrix material
ActiveCN103272273AGuaranteed porosityHigh porositySurgeryProsthesisPorosityCell-Extracellular Matrix
The invention provides a mold for preparing an accellular small intestine submucosa matrix material, which is composed of a base, a pressure frame and a pressure screen, wherein the base is a square plate with bolt holes at four corners; the pressure frame is a hollow square frame with bolt holes at four corners; the pressure screen is a square frame with a square frame structure or reticular structure inside; the bolt holes in the base are corresponding to the bolt holes in the pressure frame one by one; the external diameter of the pressure frame is the same as the dimension of the base; and the inner diameter of the pressure frame is the same as the dimension of the pressure screen. When being used for preparing the accellular porcine small intestine submucosa matrix material, the mold can not compress the space structure of the accellular porcine small intestine submucosa matrix material or destroy the three-dimensional structure of the natural extracellular matrix, and can ensure the porosity of the prepared accellular porcine small intestine submucosa matrix material.
Owner:BEIJING BIOSIS HEALING BIOLOGICAL TECH
Device with griddle and process for generating power by efficiently recycling sinter waste heat
ActiveCN103234364AIncrease ore volumeImprove sintering qualityIncreasing energy efficiencyHandling discharged materialProcess engineeringUtilization rate
A device with a griddle and a process for generating power by efficiently recycling sinter waste heat relate to the technical field of waste heat power generation. The device comprises a sinter cooling system, a waste heat power generation system and a smoke system. The sinter cooling system and the waste heat circulation power generation system are connected through the smoke system to form a loop. The process includes 1) sinter cooling, 2) the smoke system and 3) waste heat power generation. The device and the technological process for waste heat power generation have the advantages of completely utilizing waste heat discharged in the sinter cooling process, obviously increasing power generation quantity, obviously reducing system self power utilization rate and being remarkable in energy-saving effect.
Owner:CITIC HEAVY INDUSTRIES CO LTD +1
A kind of preparation method of easy-to-remove ceramic core
ActiveCN102266906AHigh strengthAppropriate intensityFoundry mouldsFoundry coresPorosityTurbine blade
The invention relates to a preparation method of an easy-to-remove ceramic mold core. The easy-to-remove ceramic mold core is characterized in specific preparation method requirements that: the effective reaction area of the ceramic mold core is increased through the addition of carbon nano-tubes which takes 0.01% to 0.1% of the mass of the powder material; pores in the mold core are connected byspatial channels formed by sintered carbon nano-tubes, such that chemical liquid can be quickly delivered into the pores of the ceramic mold core, the speed of the reaction between the ceramic mold core and the chemical substances can be greatly improved, and the ceramic mold core can be quickly removed. Compared to prior arts, the ceramic mold core provided by the present invention is suitable for the producuction of high pressure hollow turbine blades with complicated inner chamber structures; the ceramic mold core material can be used for preparing ceramic mold cores with tiny and complicated structures. The prepared ceramic mold cores have relatively high strength and density. Also, certain porosity is maintained while a proper strength is maintained. Therefore, practical production requirements are ensured.
Owner:INST OF METAL RESEARCH - CHINESE ACAD OF SCI
Production process of preparing high-purity silica by virtue of quartz sands
InactiveCN104556046AGuaranteed porosityReduce manufacturing costEnergy inputSilicon compoundsElectrostatic separationThermal insulation
The invention discloses a production process of preparing high-purity silica by virtue of quartz sands. The production process comprises the following steps: 1) crushing; 2) calcining; 3) water quenching; 4) grinding; 5) magnetic separation; 6) electrostatic separation; 7) pickling; 8) cleaning by deionized water; and 9) drying, wherein scrubbing and desliming are carried out by adding an abrasive while crushing, and the abrasive includes boron carbide, silicon carbide and corundum; heat used by drying is from waste heat in a calciner, a heat collection cabin is arranged on the outer wall of the calciner, and the heat is introduced to the ninth procedure for drying with the arrangement of a plurality of blowers and a thermal insulation pipeline, and a layer of polyimide membrane is arranged on the inner wall of the thermal insulation pipeline. By improving the traditional process, the production process is capable of optimizing a technical formula and integrating procedure structures. In addition, by fully utilizing the waste heat of equipment, a novel green and environmental-friendly process is provided, so that while ensuring high purity of the silica, the production energy consumption is greatly lowered, the production cost is saved, and the production efficiency is improved.
Owner:新沂市永恒熔融石英有限公司
Flexible lithium ion battery cathode and manufacturing method thereof
InactiveCN105304906AImprove electrochemical performanceGood for volatilizationCell electrodesSecondary cellsBoiling pointSlurry
The invention relates to a flexible lithium ion battery cathode and a manufacturing method thereof. The manufacturing method is characterized in that a lithium ion battery cathode material, a conductive agent and PTFE (Polytetrafluoroethylene) are uniformly mixed with a low-boiling solvent, so as to form slurry, the slurry is dried to obtain a powdered mixture, then the powdered mixture is properly dispersed with a high-boiling solvent, so as to obtain an electrode film containing the high-boiling solvent through pressing, and then the electrode film is fully dried to obtain a flexible electrode. By taking the measures, the polarization degree and impedance of the electrode are effectively reduced, so that the intercalation process of the electrode is more uniform, and the phenomenon of lithium precipitation is effectively prevented.
Owner:SHANDONG RUNSHENG POWER TECH
Assembly type grass-planted concrete precast block and construction method of ecological bank adopting same
InactiveCN108677871AWell developed root systemAggressiveCoastlines protectionPlant cultivationEngineeringHerbaceous plant
The invention discloses an assembly type grass-planted concrete precast block and a construction method of an ecological bank adopting the same. The assembly type grass-planted concrete precast blockis composed of a convex block body and concave block bodies, wherein the convex block body and the concave block bodies are connected into a whole, the convex block body is located in the middle, theplurality of concave block bodies are arranged next to the convex block body, and the convex block body and the concave block bodies are made of ecological concrete with ecological holes; greening soil coverings suitable for the growth of herbaceous plants are laid on the upper surface of the convex block body and the upper surfaces of the concave block bodies respectively, the herbaceous plants take roots on the greening soil coverings and in the convex block body and the concave block bodies; and the concrete precast blocks can be spliced and clamped together. Meanwhile, the invention provides a construction method of the ecological bank adopting the assembly type grass-planted concrete precast block according to the characteristics of the assembly type grass-planted concrete precast block. The assembly type grass-planted concrete precast block has the advantages that the structure is reasonable, the coverage rate of the planted-grass is high and the construction is convenient and rapid; and the assembly type grass-planted concrete precast block can be used for ecological protection of medium and small rivers, and can also be used for ecological protection of channels, lakes, reservoirs and ponds.
Owner:NANCHANG INST OF TECH
Geothermal development system and construction method thereof
ActiveCN110030745ASmall footprintHigh porosityCollector components/accessoriesLighting and heating apparatusEngineeringHigh pressure water
The invention discloses a loose blasting type hot ore development system and a construction method thereof. The hot ore development system comprises a ground lifting system, a large-diameter verticalshaft, an underground high-temperature high-pressure heat exchange water tank, a heat exchange flow guide channel, a water-rock geothermal flow storage layer, a movable sealing device and the like, wherein the water-rock geothermal flow storage layer is formed by access blasting tunnels and a main tunnel. The hot ore development system is provided with an injection pipeline and a collecting pipeline along the inner wall of the large-diameter vertical shaft, the injection pipeline communicates with the collecting pipeline through the heat exchange flow guide channel of the underground high-temperature high-pressure heat exchange water tank in dry hot rock, the circulating main tunnel is arranged around the underground high-temperature high-pressure heat exchange water tank, and the plurality of rows of access blasting tunnels are horizontally arranged along the main tunnel, a hot ore blasting fracture flow storage layer is formed through caving mining method loose blasting, moreover, the movable sealing device is arranged above the vertical shaft of a blasting layer, through a U-shaped pipe principle, through the injection pipeline and the collecting pipeline, cold water and hot water in the high-temperature high-pressure water tank exchange heat energy, the water with the heat energy is conveyed to the ground to be converted into electric energy for people to use, and dual heat exchange is realized.
Owner:MECHSOFTTECHNOLOGY U S A CO LLC +2
High-precision air filter paper as well as preparation method and application thereof
InactiveCN104878646AHigh porositySmall apertureCellulosic pulp after-treatmentDefoamers additionFiberAir filter
The invention discloses high-precision air filter paper which comprises body paper and an impregnant for impregnating the body paper, wherein the body paper comprises glass fiber, alkali treated cotton linter pulp, polylactic acid fiber, a defoaming agent, a dispersing agent, a wet strength agent, a waterproof agent and a brightener; the impregnant comprises phenolic resin, styrene-acrylic emulsion, normal hexane, methanol, N-hydroxymethyl acrylamide and a wetting agent. The invention further discloses a preparation method of the high-precision air filter paper. Through the preparation method, the obtained high-precision air filter paper has the characteristics of relatively high filter precision, relatively low filter resistance, relatively high pollutant carrying capacity, long service life and good quality stability.
Owner:杭州特种纸业有限公司
Drilling device for underground gas holes and drilling method thereof
PendingCN110374497AIncrease concentrationIncrease drawConstructionsLiquid/gas jet drillingSlagHydrostatic pressure
The invention discloses a drilling device for underground gas holes and a drilling method thereof. Firstly, sleeve holes are drilled in a drainage area; hole sealing sleeves are fixedly sealed in orifices; then, the hole sealing sleeves are connected with drilling devices; during drilling, the internals of drilled holes are pressurized through hollow drill rods and filled with cooling liquid to achieve a hole wall supporting effect; after holes are drilled through rock layer sections, wall protecting mud is injected in rock layers in a pressurized mode, and a certain static water pressure is formed in the holes to achieve a rock wall stabilizing effect; clear water is used for drilling after entering coal seams; water and slag generated in the drilling process are separated by a water-slagseparation device to realize secondary utilization of resources; after final holes are drilled in, drainage pipelines are replaced in the holes in a pressurized state for flow pressure-reduced drainage; and through the flow pressure-reduced drainage method, the problem of blockage of hole wall gaps by the speed-sensitivity effect can be prevented, the gas quantity attenuation efficiency of the gas holes is reduced, and the gas extracting quantity is increased.
Owner:田振林
Preparation formula and preparation method of anti-abrasion waterproof percussion-composition-free nail-shooting pill tablets
InactiveCN106397072AHarm reductionReduce the risk of explosionExplosive working-up apparatusNitrated explosive compositionsPorosityFreeze-drying
The invention discloses a preparation formula and a preparation method of anti-abrasion waterproof percussion-composition-free nail-shooting pill tablets. The anti-abrasion waterproof percussion-composition-free nail-shooting pill tablets comprise high-explosive nitro-cotton, potassium permanganate, a granulation material, an anti-abrasion waterproof material, coloring agents, solvent and water. The solvent and the water are solvent and water which are left in the preparation process. The characteristic that potassium permanganate is decomposed and is changed from bright red to dark brown when heated is used for visual control in the production process. The coloring agents are used in the formula, tablets with different explosive forces are distinguished according to different colors of the coloring agents, and safety during construction or after construction is improved. The water content in the tablets is controlled in the production process, safety in the production process is ensured, and tabletting forming of the tablets is convenient. Meanwhile, in the vacuum freeze-drying procedure, porosity of the tablets is guaranteed, oxygen supply during explosions can be improved due to proper porosity, the explosive force is improved, and the dud rate is reduced.
Owner:株洲耐尔电子科技有限公司
Method for preparing high-strength boron carbide porous ceramics
The invention discloses a method for preparing high-strength boron carbide porous ceramics. The method comprises the following steps: (1) proportioning raw materials: 80-95wt% of boron carbide powder,0-3.0wt% of suspending agent, 3-15wt% of binder, 5-12wt% of sintering assistant and 0-12wt% of lubricant; (2) adding distilled water into the raw materials, and carrying out mixing in a ball mill orstirring mill, so as to obtain boron carbide slurry, wherein boron carbide granules 1# and boron carbide granules 2# in the boron carbide slurry are uniformly distributed and suspended; (3) subjectingthe boron carbide slurry to spraying granulation, and carrying out drying, so as to obtain boron carbide powder with fluidity; (4) molding the boron carbide powder, so as to obtain boron carbide biscuits; and (5) placing the boron carbide biscuits into a vacuum or atmosphere no-pressure sintering furnace. According to the method, the weak points that the quantity of sealed pores is large, a ceramic matrix is complicated in ingredient, the strength is low, and the like can be overcome, and boron carbide can have more extensive application.
Owner:NINGBO VULCAN TECH CO LTD
Ceramic microcrystal diamond wheel for grinding titanium alloy and preparation method thereof
InactiveCN108098602AIncrease the number of nucleiGuarantee the number of nucleiAbrasion apparatusGrinding devicesLiquid stateTitanium alloy
The invention discloses a grinding wheel for grinding titanium alloy and a preparation method thereof. The grinding wheel for grinding titanium alloy is prepared with the fallowing raw materials, by weight, 65 parts to 75 parts of cellular diamond abrasive materials, 20 parts to 30 parts of ceramic microcrystal bonding agents, 3 parts to 6 parts of temporary sticky patches, and 5 parts to 10 partsof pore-forming agents. According to the grinding wheel for grinding titanium alloy, and the preparation method thereof, the adopted ceramic microcrystal bonding agents provide advantages for improving the bonding strength, wear resistance, self-sharpening, cutting edges, grinding efficiency and heat dissipation performance of a grinding tool; the filling agents, namely refined naphthalene, generate uniform air holes after volatilizing due to the high temperature, and the heat dissipation performance of the grinding wheel is further improved; and additionally, because an isostatic press is adopted, pressure is transmitted in a liquid state, and the texture uniformity and the product stability of the grinding tool are improved.
Owner:郑州宏拓精密工具有限公司
Blueberry plantation acidic organic fertilizer and preparation method
InactiveCN104478499AGuaranteed porositySolve the reuse problemBio-organic fraction processingOrganic fertiliser preparationSoil porosityCompost
The invention discloses a blueberry plantation acidic organic fertilizer comprising the following components by mass: 20%-40% of an acidic compound bacteria culture, 15%-20% of saponin residue, 15%-35% of pine needle, 10%-15% of sawdust, and balance of straw; the sum of the content of all the components is 100%. The present invention also discloses a preparation method of the acidic organic fertilizer, the preparation method includes acidic compound bacteria separation culture, composting, construction of a heap, inoculation, compost maturity, dry-making, packaging and other steps; the blueberry plantation acidic organic fertilizer has the many advantages of keeping soil porosity, increasing organic matters, and maintaining soil acidity; according to the preparation method of the blueberry plantation acidic organic fertilizer, and the characteristics of strong saponin wastewater acidity and poor biodegradability can be used for development of the a blueberry plantation acidic organic fertilizer, the problem of difficult recycling of saponin wastewater can be solved, blueberry plantation needed acidic organic fertilizer can be provided, the method is easy to implement, and the used raw materials are easy to obtain.
Owner:SHAANXI UNIV OF TECH
Building fireproof heat-insulating inorganic mineral coating and preparation method thereof
PendingCN110713737ALight weightGood heat insulationFireproof paintsAntifouling/underwater paintsNano siliconMicro bubble
The invention provides a fireproof heat-insulating inorganic mineral coating for buildings and a preparation method thereof. The coating is formed by compounding and processing aerogel, hollow microspheres, high-fire-resistance resin, an inorganic cementing material and other auxiliaries. The nano silicon aerogel is the best thermal insulation material at present; the glass hollow micro-beads andthe ceramic vacuum micro-beads also have excellent heat insulation effects, so that by matching the components with aerogel, the thermal insulation performance is improved; meanwhile, the volume weight of the coating is reduced as a filler, the thermal insulation effect is more remarkable, the void ratio of a coating system is guaranteed by blending silica sol and silicone acrylic resin; furthermore, the strength and the fireproof performance of a coating film are also guaranteed. The invention also provides a composite coating using the coating, the thermal insulation putty adopts an inorganic gelling system taking expanded and vitrified micro bubbles as light aggregate, has excellent thermal insulation performance, has superstrong thermal insulation capability, A-grade fireproof capability and high temperature resistance, and well controls the cost.
Owner:湖南蓝天豚住工科技有限公司
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