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6010results about How to "High temperature resistant" patented technology
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Laser-cladding high-entropy alloy powder and preparation method of high-entropy alloy coating
ActiveCN103290404AImprove coating qualityHigh hardnessMetallic material coating processesHigh entropy alloysOperability
The invention discloses laser-cladding high-entropy alloy powder. The laser-cladding high-entropy alloy powder comprises the following elements in percentage by weight: 10%-15% of Fe, 14%-17% of Cr, 22%-25% of Ni, 22%-24% of Co, 22%-24% of Mn, 0%-4% of Si and 0%-4% of B. The invention further discloses a scheme of adding another element Al based on the gradients of the scheme, and a method for preparing a high-entropy alloy coating by using the laser-cladding high-entropy alloy powder. According to the technical scheme, after laser cladding, good coating quality is realized; a phase structure of the coating retains peculiar solid solution structure of high-entropy alloy, and the atomic percent of each main metal element in the cladding coating satisfies nominal category of the high-entropy alloy; the coating has a plurality of excellent performances of high rigidity, high temperature resistance, wear resistance, corrosion resistance and the like; the technical repeatability and operability are both greatly improved, so that the high-entropy alloy is popularized and applied in surface modification of laser materials.
Owner:ZHEJIANG UNIV OF TECH +1
Electrosurgical Instrument
ActiveUS20080215048A1Easy to wearEasy and economical to makeDiagnosticsSurgical instruments for heatingSurgical departmentElastance
The invention relates to an electrosurgical instrument for coagulating and / or cutting biological tissue, which can be manufactured easily and economically, wherein a surgical intervention is to be carried out easily and reliably with the instrument. For this purpose, the instrument comprises the following:two linked branches which can be moved toward one another,gripping devices at a proximal region of the branches or of the instrument for bringing the branches together,electrode parts at a distal region of the branches or of the instrument for grasping tissue and for conducting an HF current through the tissue,current feed devices for feeding the HF current to the electrode parts from an HF generator,a switching device for activating the HF current with the branches brought together,at least one spacing element to form a defined minimum spacing between the electrode parts,at least one elastically deformable element, which is arranged at one of the branches or the gripping devices such that, on closing the branches and reaching the minimum spacing, at least one region of the gripping devices can be moved further in the proximal region for actuating the switching device.The instrument can also be carried out as a shaft instrument, wherein at least one electrode part is movable through a shaft in its extension direction.
Owner:ERBE ELEKTROMEDIZIN GMBH
Device for testing insulating property of high-voltage oiled paper
ActiveCN101957423APrecise Electrode SpacingAdjust electrode spacingTesting vessel constructionPartial dischargeHigh pressure
The invention relates to the technical field of high voltage and insulation, in particular to a device for researching and testing an insulating property of high-voltage oiled paper. Aiming at the positions of frequent faults during the operation of a converter transformer, the device simulates a ball-board, a needle-board, a board-board, faces and suspension discharge electrode models; and the typical high-voltage oil / oiled paper insulating experiments can be realized under direct current (DC) voltage, alternating current (AC) voltage and AC-DC voltage so as to acquire partial discharge characteristics and breakdown characteristics of the major insulation of the converter transformer.
Owner:CHINA ELECTRIC POWER RES INST +1
Aflatoxin nano antibody gene pool, construction method and application of aflatoxin nano antibody gene pool as well as aflatoxin B1 nano antibody 2014AFB-G15
ActiveCN103866401AEasy to buildResistant to organic reagentsImmunoglobulins against fungi/algae/lichensBiological testingGene poolAntibody variable region
The invention relates to an aflatoxin nano antibody gene pool, a construction method and application of the aflatoxin nano antibody gene pool as well as an aflatoxin B1 nano antibody 2014AFB-G15. The aflatoxin nano antibody gene pool is prepared by extracting RNA (ribonucleic acid) in alpaca blood after immunization of an aflatoxin B1 antigen, performing specific amplification on a variable region gene of an alpaca heavy chain antibody by adopting an RT-PCR (reverse transcription-polymerase chain reaction) method to obtain an aflatoxin nano antibody VHH gene, and then performing transformation after connecting with a pCANTAB5E (his) vector. The aflatoxin B1 nano antibody 2014AFB-G15 obtained by screening, disclosed by the invention, has the characteristics of organic reagent resistance, high temperature resistance and the like, and is good in stability; the IC50 (half maximal inhibitory concentration) of the aflatoxin B1 nano antibody 2014AFB-G15 to the aflatoxin B1 is 0.66ng / mL, and the cross reactivity of the aflatoxin B1 nano antibody 2014AFB-G15 to the aflatoxins B2, G1,G2 and M1 is 22.6%, 0.95%, 32.1% and 26% respectively.
Owner:INST OF OIL CROPS RES CHINESE ACAD OF AGRI SCI
Preparation method of silicon-carbide-fibrofelt-enhanced silica aerogel composite material
The invention relates to a preparation method of a silicon-carbide-fibrofelt-enhanced silica aerogel composite material, and relates to an aerogel composite material. According to the invention, a carbon-rich silicon carbide micro-nano ceramic fibrofelt with small fiber diameter, high porosity, communicating pores, fast impregnation speed, and good compatibility with a substrate is prepared with a static electro-spinning technology combined with a precursor conversion method; a silica sol is prepared with an acid-alkali two-step method; with an infiltration technology, the electro-spun silicon carbide ceramic fibrofelt or precast is soaked into the sol; and through processes such as gel process, aging, curing, solvent exchange, supercritical drying, and the like, the silicon-carbide-fibrofelt-enhanced silica aerogel composite material is obtained. The prepared composite material has the characteristics of low density, large specific surface area, super-hydrophobicity, low thermal conductivity, and the like. The strength and toughness of the material are also greatly improved. The carbon-rich silicon carbide fiber has an infrared shielding effect, such that composite material thermal insulation effect and ultra-high-temperature stability can be improved.
Owner:ZHONGKE RUNZI (CHONGQING) ENERGY SAVING TECH CO LTD
Calcium oxide-based ceramic core for casting titanium alloy and manufacturing method thereof
The invention discloses a calcium oxide-based ceramic core for casting titanium alloy and a manufacturing method of the calcium oxide-based ceramic core. The calcium oxide-based ceramic core comprises the following components by weight percent: 1.0-15.0% of zirconium dioxide, 0.5-10.0% of yttrium oxide, 0.05-0.1% of thorium oxide and the balance of calcium oxide, and the sum of the contents of the above the component is 100%. According to the ceramic core, the bending strength is 15-30Mpa at room temperature, the bending strength is 5-10Mpa at high temperature, the high-temperature deflection is 0.2-0.5%, the firing shrinkage ratio is 1-1.5%, and the porosity is 40-50%. Compared with the existing commercial alumina-based ceramic core and silicon oxide-based ceramic core, the calcium oxide-based ceramic core of the invention greatly reduces the reactivity with molten titanium, and has the advantages of high temperature resistance, easiness in core leach, low in cost and the like.
Owner:BEIHANG UNIV
Association-type non-crosslinking fracturing fluid and preparation method thereof
Owner:SOUTHWEST PETROLEUM UNIV
Cosmetic composition with anti-glycosylation and anti-aging effects and application thereof
PendingCN111329808AEfficient removalAvoid damageCosmetic preparationsToilet preparationsBiotechnologyVitamin C
The invention provides a cosmetic composition with the anti-glycosylation and anti-aging effects and an application thereof, and belongs to the technical field of functional compositions. The cosmeticcomposition comprises 0.5-4 parts of vitamin C, 0.5-4 parts of SOD-containing yeast powder, 0.2-5 parts of haematococcus pluvialis, 0.5-10 parts of rooibos tea, 0.5-8 parts of licorice extract, 0.1-6parts of waxberry extract, 0.5-8 parts of longan fruit shell extract, 0.1-8 parts of burdock polyphenol, 0.5-8 parts of cinnamon extract, 0.1-5 parts of kudzu root extract, 1-10 parts of purslane extract, 2-40 parts of carbohydrates, 2-30 parts of proteins and 0.5-5 parts of lipids. The cosmetic composition can achieve the melanogenesis-blocking and full-whitening effects, and the comprehensive anti-aging and whitening effects are achieved by a basic prescription.
Owner:西安力邦医美科技有限公司
Rapidly degradable magnesium alloy material as well as manufacturing method and application thereof
ActiveCN104651691AModerate densitySolve the pollution problemFluid removalWell/borehole valve arrangementsEnvironmental resistanceSlag
The invention discloses a rapidly degradable magnesium alloy material. The material comprises the following components: elements such as Al, Li, Ca, Y, Si, Ni, Cu and Fe. The invention also discloses a preparation method and the application of the rapidly degradable magnesium alloy material. Compared with the prior art, the rapidly degradable magnesium alloy material has the advantages that the problems of failure in resisting high temperatures and failure in meeting high-temperature and high-bearing operation requirements of the existing easily degradable materials or easily degradable magnesium alloy materials and products thereof are solved, meanwhile, the material is controllable in density, the slag or the corrosion product of the material meets the requirements of flowback operations, and multiple technical effects of simplicity and high efficiency, low cost, energy conservation, environmental protection and the like can be achieved.
Owner:NINGBO HIGH NEW DISTRICT RONGCHUANG NEW MATERIAL SCI & TECH
Method for preparing porcelain granules by using fly ash
InactiveCN101585698AImprove protectionSave natural resourcesFluid removalCeramic materials productionExpanded clay aggregateSlurry
The invention discloses a method for preparing porcelain granules by using fly ash, which comprises the following steps: putting fly ash, potassium feldspar and quartz as raw materials into a ball mill respectively, dry-milling the raw materials, sieving the milled raw materials respectively, removing iron from the sieved fly ash, putting the fly ash after iron removal, the sieved potassium feldspar and quartz and kaolin into the ball mill, and wet-milling and evenly mixing the materials to form mixed slurry; and granulating the mixed slurry by adopting a pressure type spray granulator, putting the granules into an alumina crucible, placing the alumina crucible into a silicon-carbon rod resistance furnace, sintering and naturally cooling the granules, and taking out the granules to obtain the high-strength porcelain granules. The method for preparing the porcelain granules by using the fly ash is not only favorable for saving natural resources and reducing the production cost, but also favorable for environmental protection. The fly ash does not need to be crushed by a high-power crusher, and the fly ash is mixed evenly. The production process is easy to control, and has little energy consumption; the strength of the prepared fly ash porcelain granules can reach 60 to 120MPa; and the porcelain granules have good properties of light weight, high temperature resistance, corrosion resistance and the like, and can be used as a fracturing propping agent for middle and deep layer oil-gas fields.
Owner:SHAANXI UNIV OF SCI & TECH
Process for producing ordered porous anodic alumina form
The present invention discloses one kind of ordered porous anode oxidized alumina template preparing process. Compared with available technology, the said process has the advantages of capacity one preparing great area highly ordered nanometer template, high template success rate and high template quality including raised nanometer pore arrangement orderliness, pore size homogeneity, depth uniformity and porosity.
Owner:DONGGUAN UNIV OF TECH
Method for removing metal ions from aqueous solution by use of hydrotalcite
InactiveCN102336461AImprove removal efficiencyHigh ion exchange capacityOxygen/ozone/oxide/hydroxideWater/sewage treatment by ion-exchangeMetal ions in aqueous solutionRadioactive agent
The invention relates to the field of water treatment, specifically to a method for removing metal ions from an aqueous solution by the use of hydrotalcite. The method provided by the invention comprises the step of removing metal ions from an aqueous solution by the use of hydrotalcite. The metal ions, which refer to heavy metal ions or radioactive substance ions, comprise one or more selected from the group consisting of mercury, chromium, lead, arsenic, cadmium, tin, copper and zinc heavy metal ions. The radioactive substance ions comprise uranium, thorium and radium ions. According to the invention, hydrotalcite is applied in metal ions-containing sewage processing, leading to high metal ion removing efficiency and obvious effects. In the meanwhile, raw material sources for the preparation of hydrotalcite are extensive, the cost is low, the preparation method is simple, energy consumption is low and the investment is also low. Therefore, the method provided by the invention has an extensive application prospect.
Owner:INST OF PROCESS ENG CHINESE ACAD OF SCI +1
Photo-setting adhesive
InactiveCN101392152AImprove adhesivenessExcellent adhesive abilityPolyureas/polyurethane adhesivesOrganic non-macromolecular adhesiveAdhesiveEpoxy acrylate
The invention discloses a photo-curing adhesive, in particular relates to an adhesive of ultraviolet rays or visible light. The adhesive comprises components of the following weight ratios: 10 percent to 75 percent of matrix resin, 5 percent to 50 percent of assisted resin and 10 percent to 70 percent of acrylate monomer, wherein, the matrix resin is a mixture of one or the mixture of polyether-based polyurethane and polybutadiene acrylate and the assisted resin is one or the mixture of polyurethane acrylate or epoxy acrylate. The photo-curing adhesive provided by the invention has better adhesive performance than a common adhesive, especially has very high adhesive strength to glass, crystal and metal, meanwhile, the photo-curing adhesive has excellent resistance performance to high temperature, high humidity and water boiling, thereby having wide application prospect.
Owner:GUANGDONG HENGDA NEW MATERIALS TECH
Nano modified water-base multifunctional sound-absorbing paint and preparation method thereof
InactiveCN103980771ABasic mechanicsBasic sound-absorbing functionCoatingsWater basedThermal insulation
The invention discloses a nano modified water-base multifunctional sound-absorbing paint and a preparation method thereof. The paint is composed of the following components in parts by weight: 28-38 parts of emulsion, 2-10 parts of pigment, 30-45 parts of filler, 15-25 parts of water, 4-8 parts of flame retardant and 2.25-5.43 parts of assistant. By optimizing the paint system structure, the polymer and filler are selected, modified and proportioned to ensure the basic mechanical properties and sound-absorbing function, and the paint has high-value service properties, such as thermal insulation, moisture resistance, fire resistance, aging resistance, fouling resistance, sterilization, air purification and the like, and is especially suitable for rooms and other occasions with higher environmental requirements.
Owner:南京创宁空间新材料科技有限公司
Method for preparing three-dimensional porous graphene material by solution
InactiveCN102701188AMass production availableAvailable for mass productionGrapheneStretchable electronicsPorous graphene
The invention discloses a method for preparing a three-dimensional porous graphene material by solution. The method comprises the following steps of: immersing a three-dimensional porous template into a graphene oxide solution, and then depositing the graphene oxide on the template to realize three-dimensional assembling of the graphene oxide on the template, and then preparing the three-dimensional porous graphene material containing the template by reduction; removing the template from the three-dimensional porous graphene material containing the template, and then washing to obtain the three-dimensional porous graphene material. The aperture of the three-dimensional porous graphene material can be regulated and controlled by using the templates with different apertures the material prepared by the invention has the advantages of low density, high specific surface area, high heat conductivity, high-temperature resistance, and corrosion resistance; the preparation method is economical and simple and suitable for large-scale production. And the prepared material is applicable to aspects such as catalytic carriers, preparation of flexible conductors, and stretchable electronics.
Owner:HUAZHONG UNIV OF SCI & TECH
Three-dimensional porous silicon-based composite negative electrode material of lithium ion cell and preparation method thereof
ActiveCN102683655AEasy to operateReduce processing costsElectrode carriers/collectorsSecondary cellsCopper wireCopper foil
The invention discloses a three-dimensional porous silicon-based composite negative electrode material of a lithium ion cell and a preparation method thereof. A collection body material, such as a copper foil net or a copper wire net or foam copper or foam nickel, which has a three-dimensional net structure, enables electrode active substances to be uniformly dispersed in the material and the surface of the material, and has high temperature resistant characteristic and excellent conductivity, is adopted; and a sizing material containing simple substance silicon or a mixture of simple substance silicon and metal M is combined with the copper foil net or copper wire net or foam copper or foam nickel by a dipping method, and then the three-dimensional porous silicon-based composite negative electrode material is formed by a heat treatment (alloying and annealing treatment) manner. According to the invention, based on the three-dimensional porous structure, the forming of silicon metal alloy as well as excellent binding force between the negative electrode material and the three-dimensional porous collection body material, the cell prepared from the porous silicon-based composite negative electrode material has higher discharge specific capacity and first charge-discharge efficiency and excellent cycle performance.
Owner:SHANGHAI SHANSHAN TECH CO LTD
Organic boron delay cross-linking plant adhesive breakdown fluid
The invention relates to a novel organic boron cross linking agent for fracturing and fracturing fluid for deferring cross bonding vegetable glue, wherein the preparation method comprises the steps of, reacting sodium borate with multicomponent aldehydes (e.g. ethanedial), adding polyvalent alcohol amine (e.g. triethanolamine) for complete reaction, forming component an of organic boron cross linking agent, and organic boron component B of 20-30% caustic soda liquor solution, mixing component an and B in the proportion of 100:5-100:15 to form the organic boron cross linking agent. While the organic boron deferring cross bonding vegetable glue fracturing fluid comprises vegetable glue polymer, pH regulator, glue breaking agent and organic boron cross linking agent.
Owner:PETROCHINA CO LTD
Method for preparing solventless unsaturated polyester-imide wire coating enamel
InactiveCN101514276AHigh temperature resistantEnergy saving and environmental protectionPlastic/resin/waxes insulatorsCoatingsImideAcid value
The invention relates to a method for preparing solventless unsaturated polyester-imide wire coating enamel. The method comprises preparation of unsaturated polyester-imide and processing of paint mixing, wherein the unsaturated polyester-imide is prepared by the following steps: first step, adding polylol, dibasic acid or estolide into a reaction kettle according to a mol ratio of 1.05-1.5:1; stirring and heating the mixture to a temperature of between 160 and 170 DEG C; preserving the heat for 0.5 to 2 hours; and slowly heating the mixture to a temperature of between 200 and 205 DEG C until the acid value is no less than 50 mg KOH / g; and second step, cooling the mixture to a temperature of between 110 and 120 DEG C, adding trimellitic anhydride and diamine with the mol ratio of 2:1, and preserving the heat at a temperature of between 130 and 150 DEG C until the material is transparent; and after 1 hour of heat preservation, slowly heating the material to a temperature of between 200 and 205 DEG C until the acid value is no less than 30 mg KOG / g. Machine winding dipped by the solventless resin has the advantages of small volatilization loss, high filling rate, few times of paint dipping, short baking time, strong binding power, excellent performance of electrical appliance, environmental pollution reduction, and the like.
Owner:上海新天和树脂有限公司 +1
Chicken essence and preparation method thereof
ActiveCN103750254ALong storage timeGreat tasteFood homogenisationFood dryingMaillard reactionMonosodium glutamate
The invention relates to a preparation method of chicken essence. The method comprises the steps of weighing chicken breast and chicken skeleton, adding water, boiling at high temperature, and then, passing through a colloid mill, so as to obtain colloidal chicken juice; hydrolyzing the colloidal chicken juice, then, carrying out enzyme deactivation and filtrating, so as to obtain enzymolysis chicken juice; uniformly mixing the enzymolysis chicken juice, L-cysteine hydrochloride, ribose, L-proline, xylose, dextrose monohydrate, L-glycine, water and chicken oil, and then, adding the mixture into a reaction kettle for Maillard reaction, so as to obtain a chicken juice reactant; uniformly mixing the chicken juice reactant, salt, white granulated sugar, monosodium glutamate, modified starch, maltodextrin, cyclodextrin, water, I+G, chicken oil and chicken flavoring base, then, passing through a colloid mill, filtrating to obtain colloidal chicken cream, emulsifying the colloidal chicken cream, and then, carrying out spray drying on the emulsified colloidal chicken cream through a homogenizer, thereby obtaining the chicken essence. The invention further relates to a product of the preparation method of the chicken essence. Compared with the existing products, the chicken essence prepared by the method has the advantages that the chicken fragrance is unique, the flavor is harmonious, the taste of chicken is strong and full, and the fragrance and the flavor can be of long-term coexistence.
Owner:GUANGZHOU TIANHUI FOOD
Micro-accelerometer and preparation method thereof
InactiveCN101634662ALow acceleration measurement sensitivity limitLarge measurement dynamic rangeTelevision system detailsAcceleration measurement using interia forcesAccelerometerEngineering
The invention discloses a micro-accelerometer and a preparation method thereof, belonging to the technical field of processing micro inertia devices. The micro-accelerometer is arranged on a package substrate which is formed by stacking an upper surface plate, a lower surface plate and a plurality of middle substrates, wherein a signal detection circuit of the micro-accelerometer is attached on the upper surface plate; a sensitive element of the micro-accelerometer is embedded in the middle substrates, i.e. the middle substrates with cavities form a frame of the sensitive element; a flexible hanger and a sensitive mass block of the sensitive element are arranged in the cavities, and one end of the flexible hanger is connected with the sensitive element, while the other end is fixed on the frame; metal electrodes are respectively sputtered on the sensitive mass block and the surface of the frame corresponding to the sensitive mass block so as to form a flat plate sensitive capacitor, or a metal piezoresistive thick-film pattern is deposited at a connecting part of the flexible hanger and the inner side surface of the frame so as to form a metal piezoresistive strain gauge. The micro-accelerometer has high sensitivity and high-temperature resistance and can be fused into a whole with a system level package substrate, thus the micro-accelerometer has low processing difficulty and cost.
Owner:PEKING UNIV
Preparation method of composite polytetrafluoroethylene nano-filtration membrane
ActiveCN104324622AFill in the application gapHigh strengthReverse osmosisPolymer scienceFiltration membrane
The invention discloses a preparation method of a composite polytetrafluoroethylene nano-filtration membrane. After a hydrophobic polytetrafluoroethylene micro-pore membrane is activated, the composite polytetrafluoroethylene nano-filtration membrane is obtained by virtue of water-phase soaking and oil-phase soaking. The polytetrafluoroethylene micro-pore membrane has the characteristics that the strength is high and an additional supporting layer is not needed, and thus the membrane preparation process is relatively simple. Furthermore, by virtue of a unique node-fibril micropore structure of the polytetrafluoroethylene micro-pore membrane, the bonding strength between a base membrane and a nano-filtration modified layer is greatly improved, so that the performance of the composite nano-filtration membrane is improved. The prepared composite polytetrafluoroethylene nano-filtration membrane can be used for treating wastewater in severe environments of strong acid, strong alkali, high temperature and the like, and application occasions of an existing nano-filtration membrane are expanded.
Owner:ZHEJIANG SCI-TECH UNIV
Aflatoxin nano-antibody immunosorbent, immunoaffinity column and preparation methods and application of aflatoxin nano-antibody immunosorbent and immunoaffinity column
ActiveCN103861569AImprove stabilityHigh temperature resistantOther chemical processesComponent separationImmunosorbentsGene
Owner:OIL CROPS RES INST CHINESE ACAD OF AGRI SCI
Inorganic composite heat insulation material and preparation method thereof
ActiveCN102093030ADecreased volumetric water absorptionStable physical and chemical propertiesFiberCellulose
The invention relates to an inorganic composite heat insulation material, which is prepared from the following raw materials in part by weight: 100 parts of common silicate cement, 10 to 30 parts of quick hardening sulfate aluminum cement, 10 to 30 parts of gypsum powder, 10 to 40 parts of admixture, 20 to 40 parts of mineral fiber, 150 to 200 parts of vitrified micro bubbles, 4 to 8 parts of re-dispersible latex powder, 2 to 4 parts of cellulose ether, 0.1 to 0.3 part of starch ether, 0.2 to 1.0 part of water reducing agent, 0.2 to 0.6 part of retarder, 1 to 3 parts of early strength agent, 0.5 to 3 parts of water repellent, and 0.02 to 0.06 part of air entraining agent. The raw materials are mixed uniformly to prepare dry powder, and the dry powder and water are mixed in a weight ratio of 1: (0.8-1.2) and stirred to form slurry for use. The inorganic composite heat insulation material has good workability, quick strength development, high construction efficiency, good adhesive property, low drying shrinkage, heat insulation, hydrophobic property, fire resistance and durability.
Owner:辽宁际洲环保节能建材有限公司
Inorganic nonmetal composite wave-absorbing material containing graphene nano layer as well as preparation method and application thereof
InactiveCN101823881AHigh temperature resistantCorrosion resistantTemperature resistanceHot isostatic pressing
The invention relates to an inorganic nonmetal composite wave-absorbing material containing a graphene nano layer as well as a preparation method and application thereof. The material comprises the graphene nano layer and inorganic nonmetal, wherein the voltage of the graphene nano layer is 0.1-50 percent of that of the entire inorganic nonmetal composite wave-absorbing material. The preparation method comprises the following steps of: (1) mixing the graphene nano layer and the inorganic nonmetal; and (2) sintering mixed powder of the graphene nano layer and the inorganic nonmetal in as the way of normal pressure, hot pressing, hot isostatic pressing or discharge plasmas, and the like. The material has the characteristics of high temperature resistance, corrosion resistance and good wave absorption performance and improves the wave absorption effect while reducing surface reflection; and the preparation method is simple and suitable for industrialized production.
Owner:DONGHUA UNIV
Briquette binder and briquette preparation method based on binder
The invention provides a briquette binder and a briquette preparation method based on the binder. The binder comprises 45 to 75 mass percent of humic acid, 8 to 20 mass percent of bentonite, 5 to 18 mass percent of kaolin, 1 to 5 mass percent of quartz sand, 2 to 8 mass percent of quicklime, 0.1 to 2 mass percent of sodium chloride, 0.1 to 2 mass percent of potassium permanganate and 0.05 to 0.1 mass percent of polyacrylamide. The binder has a simple preparation process, low cost, convenient use and no any secondary pollution and is applicable to various types of coal. The process for preparing the briquette by using the binder comprises the following steps of: only making little pretreatment on raw material coal and the binder, mixing the raw material coal and the binder in proportion, adding water into the mixture, uniformly stirring, pressing the mixture into a cylindrical briquette by using a press machine, and air-drying or drying the cylindrical briquette. The briquette prepared by using the binder of the invention has the characteristics of high cold strength, high water resistance, low cost, low ash increment, high thermal strength, high sulfur retention rate and wide source of raw materials.
Owner:SHAANXI UNIV OF SCI & TECH
Watering spray gun with automatically rotating shower nozzle
InactiveCN104841582AImprove securityWide range of applicationsMovable spraying apparatusReversing valveShower
The invention discloses a watering spray gun with an automatically rotating shower nozzle. The watering spray gun with the automatically rotating shower nozzle comprises an upper spray gun body, a lower spray gun body, a throttling device, a speed regulating device, a steering device and the shower nozzle; the lower spray gun body is connected through the throttling device; one end of the speed regulating device is connected to the lower spray gun body through one end of a pipeline and the other end of the speed regulating device is connected to a P opening of the reversing valve through a water inlet pipe; the reversing device which is installed on the upper spray gun body comprises a water inlet pipe, a reversing valve, a valve block, a hydraulic cylinder, a reversing blocking block, a rack and a pinion; a first reversing blocking block and a second reversing blocking block are installed on the valve block; the end portion of a shifting rod of the reversing valve is arranged between the first reversing blocking block and the second reversing blocking block; the nozzle is installed on the upper spray gun body through a bearing. According to the watering spray gun with the automatically rotating shower nozzle, an electric element is avoided, the safety is high, and application occasions are wide; the valve block which is adopted plays a role as a pipeline for flowing between the reversing valve and the hydraulic cylinder, the hydraulic pipeline is simplified, and the device structure is compact.
Owner:YANSHAN UNIV
Conductive plastic and its processing method and apparatus
Owner:BEIJING NASHENGTONG ADVANCED MATERIAL & TECH CO LTD
Polyhydroxy polysiloxane and wear-resisting super-hydrophobic coating and preparation method
ActiveCN105646884AImprove wear resistanceHigh temperature resistantLiquid repellent fibresAnti-corrosive paintsPolymer scienceSide chain
The invention discloses a polyhydroxy polysiloxane and wear-resisting super-hydrophobic coating and a preparation method, and belongs to the field of super-amphiphobic materials. A structural formula of polyhydroxy polysiloxane is shown in the following formula of the description. According to the method, an active hydroxyl group is introduced onto a flexible silica main chain through over protection and deprotection processes, polymethylsiloxane with active hydroxyl group on a side chain is compounded, then the polymethylsiloxane with an active hydroxyl group on a side chain is cross-linked with diisocyanate to form a three dimensional net structure, methyl is orderly and densely arranged on the surface of a substrate, the methyl is very small in polarity and volume, and low in surface tension, thus, a compact low surface energy layer is formed, and a wear-resisting super-hydrophobic material is formed by utilizing cohesive action of isocyanate.
Owner:国科广化(南雄)新材料研究院有限公司 +1
Gadolinium-containing sintered rare earth permanent magnet alloy and preparation method thereof
InactiveCN101630557AThe temperature coefficient of coercive force decreasesCoercive force temperature coefficient β decreasesMagnetic materialsGadoliniumRare earth
The invention relates to a gadolinium-containing sintered neodymium-iron-boron rare earth permanent magnet alloy and a preparation method thereof. The permanent magnet alloy comprises components in the following formula: Re[alpha]Gd[beta]B[gamma]MxNyFe[100-alpha-beta-gamma-x-y], wherein the weight percentage beta of the gadolinium element is more than 0.50 and less than or equal to 25. Through the method for adding the Gd element into a sintered Nd-Fe-B magnet, a sintered Nd-Fe-B permanent magnet with high coercive force and high temperature resistance is prepared. The coercive force temperature coefficient beta of the prepared magnet is reduced, so the coercive force of the magnet at high temperature is improved and the magnet has the high temperature resistance.
Owner:NINGBO KONIT IND +1
Process of spraying ceramic on epoxy resin base carbon fiber composite material article surface
InactiveCN101016614AHigh temperature resistantWear-resistantMolten spray coatingEpoxyCeramic coating
The invention discloses a craft to spray ceramic on the surface of epoxide resin group carbon fiber composite material product, which comprises the following steps: A, proceeding roughening treatment for the surface of epoxide resin group carbon fiber composite material product; B, spraying metallic substratum on the roughening surface; C, spraying ceramic powder on the surface of metallic substratum; forming ceramic coating. This invention can increase the safe property and durability of the product, which can make epoxide resin group carbon fiber composite material possess wide application area.
Owner:陈锦松 +1
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