Product
Patsnap Eureka
For R&D, Patsnap Eureka makes reading and utilizing patents & technical documents easy.
Patsnap Eureka AIR
Designed for self-driven R&D workflows. Generate viable solutions, solve complex R&D challenges, empower your innovation with AI.
Patsnap Eureka Materials
Designed for material experts only. Revolutionize your material R&D, from search, analyze, to developing new materials.
Feature
TechResearch
Generate reliable direction feasibility study reports for your R&D in just a few steps.
TechSeek
Discover and master advanced knowledge NOW. Basics, ideas, possibilities, all at once.
TechMind
As an expert in R&D Theories, TechMind can generates customized viable solutions instantly.
TechRisk
Analyze your overall solution with one click, know your potential R&D risks in advance.
TechMonitor
Get weekly tech updates, stay abreast of the latest tech innovations and key insights.
Patents
Literature
Hiro is an intelligent assistant for R&D personnel, combined with Patent DNA, to facilitate innovative research.
64results about How to "Exothermic stable" patented technology
Efficacy Topic
Property
Owner
Technical Advancement
Application Domain
Technology Topic
Technology Field Word
Patent Country/Region
Patent Type
Patent Status
Application Year
Inventor
Room-temperature cured flexible epoxy adhesive and preparation method thereof
ActiveCN106281160AQuick responseImprove early strengthNon-macromolecular adhesive additivesEpoxy resin adhesivesRoom temperatureReactive diluent
The invention relates to a room-temperature cured flexible epoxy adhesive and a preparation method thereof. The room-temperature cured flexible epoxy adhesive is characterized by being prepared from a component A epoxy resin and a component B epoxy curing agent; in a utilization process, the component A epoxy resin and the component B epoxy curing agent are selected at the weight ratio of the component A epoxy resin to the component B epoxy curing agent of (1.15 to 1.20) to 1; after the component A epoxy resin and the component B epoxy curing agent are sufficiently mixed, the room-temperature cured flexible epoxy adhesive is obtained, wherein the component A epoxy resin is prepared from the following components in parts by weight: 100.5 to 115 parts of epoxy resin, 0.5 to 20 parts of a reactive diluent and 0.5 to 20 parts of an epoxy accelerant; the component B epoxy curing agent is prepared from the following components in parts by weight: 5 to 15 parts of an alicyclic amines curing agent, 28 to 100 parts of a polyether amines curing agent, 10 to 80 parts of a curing accelerant and 0.5 to 2 parts of a bonding accelerant. The adhesive prepared by the method can be cured at room temperature, is high in bonding strength and good in low-temperature flexibility, and can be used for elastic bonding.
Owner:武汉拓路特铺技术工程有限公司
High-performance moderate-temperature phase-change energy-storage material and preparation method thereof
InactiveCN103045175AHigh densityImprove solubilityHeat-exchange elementsSodium phosphatesPhase change
The invention relates to a high-performance moderate-temperature inorganic phase-change energy-storage material and a preparation method thereof. The material comprises the following components by weight percent: 95-99% of sodium phosphate dibasic dodecahydrate and 1-5% of sodium salt additive, wherein the sodium salt additive comprises sodium metasilicate nonahydrate, sodium salt of carboxy methyl-cellulose and sodium polyacrylate. According to the invention, as an improvement of a traditional inorganic phase-change energy-storage material, the material provided by the invention has larger phase change latent heat larger than 210 J / g and appropriate phase change temperature 30-40 DEG C, is an energy storage material with good performance within the temperature range, and has a wide application prospect.
Owner:TIANJIN UNIV OF SCI & TECH
Flexible epoxy structural adhesive and preparation method thereof
InactiveCN104449508AImprove bending resistanceImprove damping performanceNon-macromolecular adhesive additivesEpoxy resin adhesivesAdhesiveWorking life
The invention provides a formula of a flexible epoxy structural adhesive and a preparation method. The method is characterized in that dual-epoxy-group epoxy resin and polyether amine react to obtain modified polyether amine firstly. The formula of the flexible epoxy structural adhesive comprises a component A and a component B, wherein the component A comprises, in parts by weight, 10-40 parts of the epoxy resin, 40-80 parts of the modified polyether amine and 0-40 parts of a reactive diluent; the component B comprises, in parts by weight, 0-20 parts of the polyether amine, 30-60 parts of a curing agent and 1-3 parts of an accelerator; the flexible epoxy structural adhesive is prepared after the component A and the component B are mixed in the weight ratio of 100:(20-60). The method has the advantages that the flexible epoxy structural adhesive is convenient to construct, long in working life, slow in heat release and capable of being cured at the room temperature; an obtained epoxy material is good in flexibility, high in adhesive strength and widely applicable to fields of electrons, machinery, ships, automobiles, buildings and the like.
Owner:SHISHI GUOGAO ELECTRONICS TECH
Thermal storage type thermoelectric direct conversion device
InactiveCN101604932AEasy to replaceCompact and reasonable structure designHeat storage plantsAlkali metal sulfides/polysulfidesWater vaporElectrical battery
The invention provides a thermal storage type thermoelectric direct conversion device. Thermal conduction connection between a lithium and sulfur hexafluoride reactor and the hot junction of an alkali metal thermoelectric converter is kept excellent, a water tank is arranged outside the alkali metal thermoelectric converter, a heat insulating material is arranged between the alkali metal thermoelectric converter and the water tank, a circulating water pump is arranged in the water tank, a heat insulating layer is arranged between the lithium and sulfur hexafluoride reactor and the water tank, a capillary evaporator is an annular cavity and is sleeved on the cold junction of the alkali metal thermoelectric converter, the top of the capillary evaporator is provided with a small hole communicated with the water tank as a cooling water inlet, the inner surface of the capillary evaporator is coated with a layer of high water-absorption material, the lateral surface of the capillary evaporator is provided with a steam outlet hole and is connected with an output pipeline entering a return pipe, water vapor is condensed into water in the reflow pipe and the water flows back into the water tank through the water inlet of the water tank, and an electrode of the alkali metal thermoelectric converter extends out of the shell of a battery. The thermal storage type thermoelectric direct conversion device has the advantages of reasonable and compact design, large thermal storage density, stable heat release and high power, and is independent of the outside and can supply power for a long time.
Owner:HARBIN ENG UNIV
Intelligent clothing identifying and mite killing wardrobe
PendingCN108741731AWith intelligent informationRealize intelligent informatizationWardrobesCharacter and pattern recognitionHorizonThe Internet
The invention relates to the technical fields of smart home, internet of things, cloud platform and voice recognition, and specifically discloses an intelligent clothing identifying and mite killing wardrobe which comprises a wardrobe main body and a control host; an external camera, a microphone, a loudspeaker and a touch display screen are arranged outside the control host; a temperature and humidity sensing probe is arranged inside the wardrobe; a PTC heating plate is arranged at the inner bottom of the wardrobe main body; an inner circulating fan is arranged above the PTC heating plate; anexhaust fan used for communicating air inside the wardrobe with the air outside the wardrobe is arranged on the top of the wardrobe; single or multiple built-in cameras used for ensuring that a monitoring horizon covers a space contained in the wardrobe are arranged in the wardrobe; and the digital intelligent management and application of the clothing are realized through a program and an Internet. The wardrobe provided by the invention has the functions of intelligently identifying clothing and intelligently killing mites; on this basis, an intelligent virtual fitting function and an intelligent costume matching pushing function are realized through the internet and a cloud server, and various functions that the intelligent wardrobe can be connected, viewed and controlled through a mobile terminal are further realized.
Owner:王长贵
Medium-temperature cured prepreg resin matrix for rapid molding and preparation method of medium-temperature cured prepreg resin matrix
InactiveCN107868401AShorten the medium and low temperature curing timeExothermic stableChemistryResin matrix
The invention relates to a medium-temperature cured prepreg resin matrix for rapid molding and a preparation method of the medium-temperature cured prepreg resin matrix and mainly solves the technicalproblem of relatively low medium-and-low-temperature curing reaction speed of the existing medium-temperature cured prepreg resin matrix. The problem is solved by preferably selecting a curing system, epoxy resin and a toughening agent. The epoxy resin matrix provided by the invention can be cured within 3h at 80 DEG C, can be cured within 15min at 20 DEG C and can be stored at room temperature for more than one month, and the cured resin matrix is high in glass transition temperature and capable of meeting demands of industries such as sporting and leisure products, automobiles and yachts for rapid molding.
Owner:CHINA PETROLEUM & CHEM CORP +1
Preparation method for high-performance room-temperature calcium-based composition phase-change energy storage material
ActiveCN102492398AImprove stabilityStable exothermic processHeat-exchange elementsCalcium EDTAChemistry
The invention relates to a preparation method for a high-performance room-temperature calcium-based composition phase-change energy storage material. The preparation method includes the following steps: (1) calcium chloride or hydrate of the calcium chloride is dissolved in water according to the molar ratio of 1:6, so that calcium chloride solution is prepared, and the calcium chloride solution is placed under the constant temperature of 30 DEG C to 40 DEG C for later use; (2) calcium bromide or hydrate of the calcium bromide is dissolved in water according to the molar ratio of 1:6, so that calcium bromide solution is prepared, and the calcium bromide solution is placed under the constant temperature of 30 DEG C to 40 DEG C for later use; (3) the calcium chloride solution and the calcium bromide solution are mixed according to a proportion to form mixed solution, and are constantly stirred, so that the calcium chloride solution and the calcium bromide solution are sufficiently and uniformly mixed into the form of fluid; (4) nucleating agent and functional additive are added into the mixed solution, and the prepared brine compound is filled into a container and packaged. The low-temperature phase-change material prepared by the invention has the advantages that: the price is low, the latent heat of phase change is 160J / g to 200J / g, the phase-change temperature is between 17 DEG C and 28 DEG C, repeated tests prove that the performance of the phase-change energy storage material is stable, and phase separation does not exist. The phase-change energy storage material can be widely applied to energy efficiency in buildings, heating and temperature regulation in interior decoration, solar energy utilization, energy efficiency in vegetable greenhouses and other aspects.
Owner:TIANJIN UNIVERSITY OF SCIENCE AND TECHNOLOGY
Hydrogenation catalyst and application thereof
ActiveCN103071509AHigh airspeedLow investment costOrganic compound preparationHydroxy compound preparationOxidation statePotassium hydroxide
The invention relates to a composition and an application of a hydrogenation catalyst. The catalyst at least comprises nickel, zinc oxide, an auxiliary agent one, an auxiliary agent two, an auxiliary agent three, and an auxiliary agent four. The catalyst is mainly composed of nickel and zinc oxide. Nickel is in an oxidation state, a metal state, or a mixture of various valence states. Zero-valence nickel in the catalyst accounts for 50-98mol% of nickel in the catalyst. The auxiliary agent one is one or more selected from manganese oxide and molybdenum oxide. The auxiliary agent two is one or more selected from potassium hydroxide, magnesium oxide and calcium oxide. The auxiliary agent three is one or more selected from alumina or silicon oxide. The auxiliary agent four is one or more selected from graphite, talcum powder or stearate. With the catalyst, a yield of low-carbon hydrocarbon is low; hydrogen consumption is low; a heavy component yield is low; and product separation process is simplified. Reduction control of the catalyst is simple, and machine is easy to start.
Owner:CHINA PETROLEUM & CHEM CORP +1
Epoxy resin composition suitable for being adopted at low temperature and preparation method thereof
ActiveCN105907040AExcellent resistance to microcracksGentle exothermic reactionChemistryCarbon fiber composite
The invention relates to an epoxy resin composition suitable for being adopted at low temperature. The composition comprises a polyfunctionality epoxy resin, biphenol A polyether epoxy resin, thermoplastic resin, a curing agent and an interfacial modification agent, wherein the composition is prepared from, by mass, 100 parts of polyfunctionality epoxy resin and biphenol A polyether epoxy resin, 20-40 parts of thermoplastic resin, 30-50 parts of the curing agent and 2-5 parts of the interfacial modification agent. The epoxy resin composition has the good manufacturability, the cured product has the advantage of being not likely to crack at low temperature, and the prepared carbon fiber composite material has the advantages of improving micro-crack resistance, being good in interface bonding force and the like, and is suitable for the fields of aircraft structural component manufacutirng, fuel storage tank and other military low temperature wind tunnels.
Owner:AEROSPACE RES INST OF MATERIAL & PROCESSING TECH +1
Prostate Heat Therapy Pad
Owner:CHANGZHOU EUPHORY MEDICAL CO LTD
Material for storing heat of phase change in low temperature, and preparation method
InactiveCN1958712AImprove performanceExothermic stableHeat-exchange elementsSuper coolingAluminum ammonium sulfate
This invention discloses a method for preparing low-temperature phase transition heat-storage material, which is prepared from aluminum ammonium sulfate (major component), CaF2 (additive), carbon (additive) and deionized water (additive). The method comprises: heating aluminum ammonium sulfate to melt, adding CaF2 and carbon powder uniformly mixed at normal temperature, stirring uniformly, adding deionized water, stirring, heating the mixture for mixing uniformly, filling into a container, and packaging. The low-temperature phase transition heat-storage material has a high latent heat of phase transition, and the phase transition temperature is between 93-95 deg.C. Experiments show that the super-cooling degree of the material is below 4 deg.C, and no phase separation occurs.
Owner:SHANGHAI MARITIME UNIVERSITY
A kind of preparation method of room temperature inorganic phase change material
ActiveCN102268245ALower phase transition temperaturePrevent overcoolingHeat-exchange elementsRoom temperatureChloride
The invention relates to a preparation method of a room temperature inorganic phase-change material. The room temperature inorganic phase-change material is a hydrate which consists of calcium chloride, bischofite, water and a nucleating agent, wherein calcium chloride and bischofite are rich in raw material and cheap. The preparation method comprises the following steps: (1) heating calcium chloride or a hydrate thereof in an aqueous solution until the calcium chloride or the hydrate thereof is completely melted so as to prepare a calcium chloride solution with a special composition; (2) adding bischofite and the nucleating agent once and continuously stirring; (3) reheating and warming until the bischofite and the nucleating agent are fully melted so that an even fluid is formed by fully mixing; and (4) carrying out low temperature crystallization on the fluid, warming and melting again, then injecting into a container, and packaging. The room temperature phase-change material provided by the invention has rich raw materials, cheap price and large phase-change latent heat, and the phase-change temperature is 15 DEG C-26 DEG C; and repetition tests verify that the room temperature phase-change material has the advantages of stable property, small condensate depression, no phase separation and the like.
Owner:TIANJIN UNIV OF SCI & TECH
Phase change heat storage material and preparation method thereof
ActiveCN101671546AImprove performanceLarge latent heat of phase changeHeat-exchange elementsBarium dichlorideExothermic process
The invention discloses a phase change heat storage material, which consists of a main material barium hydroxide and an additive barium chloride, wherein the main material and the additive play a role in preventing overcooling and preventing phase separation. A preparation method of the material comprises the following steps: (1) heating and melting pure barium hydroxide; (2) adding the additive barium chloride, and fully mixing the mixture evenly into a fluid substance; and (3) filling the mixture into a container to perform packaging. The phase change heat storage material has the advantages of large phase change latent heat, stable heat release process, fewer additive types, simple preparation method and convenient production; besides, the phase change heat storage material is easy forpackaging after being melted into the state of an even fluid substance.
Owner:SHANGHAI MARITIME UNIVERSITY
Impact-modified poly vinyl chloride polymer blend
InactiveCN1611540AExothermic stableThe polymerization process is simpleMethyl methacrylateBinding force
The invention relates to a kind of polyvinyl-chlorid blend with impact modification. The invention mainly solves the problem that bad compatibility and bad binding force of nucleus and shell cause the bad impact property of polyvinyl-chlorid blend with impact modification in modifying polyvinyl-chlorid with putamen material by previous technology. In the invention, use acrylic acid carbalkoxy polymer and acrylic acid carbalkoxy-methyl methacrylate copolymer compatiblizing agent as nucleus, use methyl methacrylate as shell, and nucleus-shell are connected with compatiblizing agent. The invention can solve the problems mentioned above through the technical proposal of impact modification polyvinyl-chlorid with acrylate putamen polymer described above, and it can be used in industrial production.
Owner:CHINA PETROLEUM & CHEM CORP +1
Production method of high-solid-content ultra-high-molecular-weight acrylic ester copolymer emulsion
The invention relates to a production method of an acrylic ester copolymer emulsion, in particular to a production method of a high-solid-content ultra-high-molecular-weight acrylic ester copolymer emulsion. According to the production method, an emulgator, a wetting agent, an emulsification dispersing agent, a pH conditioning agent and an oxidation-reduction initiator system are introduced into acrylic ester mixed monomer emulsion polymerization, by adopting one-time feeding, the oxidation-reduction system and an ultra-low temperature emulsion polymerization technology, an acrylic ester copolymer with high solid content (50-55%) and ultra-high molecular weight (the Mw range is 9.5 million-10.50 million, and the intrinsic viscosity eta range is 16-20) is prepared, a traditional old technology for producing a foaming conditioning agent is successfully replaced, and the adverse factors are overcome that the traditional foaming conditioning agent is generally low in molecular weight, widein distribution range, poor in flowability and low in melt strength, and the density of the finished product is difficultly lowered. The prepared emulsion is high in solid content, spray drying is easily achieved, the product moisture is easy to control, the energy is saved, and the consumption is lowered.
Owner:山东源邦新材料股份有限公司
Multi-layer structure composite biomass granular fuel with stable heat release and preparation method thereof
The invention provides a multi-layer structure composite biomass granular fuel with stable heat release and a preparation method. The granular fuel comprises an inner core, a control layer and a shelllayer, wherein the inner core comprises basic fuel and bentonite; the control layer comprises animal bone meal, fermented, decomposed and dried rapeseed cakes and fly ash; the control layer is of a porous structure; the shell layer comprises basic fuel, animal bone meal, bentonite and lime powder; wherein the basic fuel comprises more than two of wheat straws, sawdust, corncobs, peanut shells, rice straws, rice husks, camellia oleifera shells and cottonseed hulls. According to the invention, animal bone meal, bentonite, fermented biomass, fly ash, lime powder and the like are added into the basic fuel, and meanwhile, the product structure is controlled, so that the control on the combustion process of the biomass fuel is realized, the obtained multi-layer structure composite biomass granular fuel is slow in combustion and stable in heat release, and the application range of the product is greatly enlarged.
Owner:固始龙海新能源科技有限公司
A kind of low temperature phase change energy storage material and preparation method thereof
InactiveCN102268243AImprove performanceLarge latent heat of phase changeHeat-exchange elementsPotassiumHeating temperature
The invention relates to a low-temperature phase-change heat storage material and a preparation method thereof, which is composed of pure aluminum potassium sulfate, additive calcium fluoride and deionized water. The preparation method comprises the following steps: (1) adding pure aluminum potassium sulfate at 90 to Heating at 100°C until completely melted; (2) Slowly add the calcium fluoride additive ground at normal temperature, then add deionized water and keep stirring; (3) Reheat and raise the temperature to make it fully mixed into a fluid state; ( 4) The mixture is poured into a container for packaging. The low-temperature phase-change energy storage material provided by the present invention has abundant raw materials, low price, large phase-change latent heat, and a phase-change temperature between 92.5 and 95°C. It has been verified by repeated tests that its performance is stable, and the degree of supercooling is less than 3°C. Advantages such as phase separation occur.
Owner:TIANJIN UNIV OF SCI & TECH
Dual-component solvent-free epoxy damping adhesive for marine use and preparation method thereof
InactiveCN104388026ALow initial viscosityEasy constructionNon-macromolecular adhesive additivesMacromolecular adhesive additivesVolatile organic compoundChemistry
The invention relates to a dual-component solvent-free epoxy damping adhesive for marine use and a preparation method thereof. The preparation method comprises the following steps: (1) preparing a component A: uniformly mixing epoxy resin, modified polyether amine and an active diluent while stirring, adding a defoaming agent, a dispersant and a coupling agent, further uniformly mixing while stirring, adding a flame retardant, stirring for 10 minutes, and milling twice with a three-roller mill to obtain the A component; (2) preparing a component B: uniformly stirring an epoxy curing agent, polyether amine and an accelerator to obtain the component B; and (3) preparing a coating: uniformly mixing the component A obtained in the step (1) and the component B obtained in the step (2) at a weight ratio of 100: (10-30) to obtain the product, wherein the modified polyether amine is obtained by reacting bisepoxyl epoxy resin and polyether amine. Compared with the prior art, dual-component solvent-free epoxy damping adhesive has the advantages of long pot life, stable heat release, good flame retardancy, no VOC (Volatile Organic Compounds) and good adhesion, is convenient to construct and is cured at room temperature; the material has high loss factor at room temperature and is corrosion-resistant and vibration-proof.
Owner:SHISHI GUOGAO ELECTRONICS TECH
Cleaning protective agent for porcelain bottle of transformer substation and preparation method thereof
The invention discloses a cleaning protective agent for a porcelain bottle of a transformer substation and a preparation method thereof. The cleaning protective agent for the porcelain bottle of the transformer substation comprises the following components in parts by mass: 4-10 parts of fluorosilicone polymer, 90-95 parts of thinner and 0.01-0.04 part of curing agent, wherein the fluorosilicone polymer comprises the following components in parts by mass: 50-80 parts of ethyl acetate, 10-25 parts of prefluor-4-methyl-2-amylene, 5-20 parts of methyl methylacrylate, 2-15 parts of silane coupling agent and 0.1-0.6 part of azodiisobutyronitrile. The preparation method comprises the following steps of: adding the ethyl acetate, the azodiisobutyronitrile, the ethyl methylacrylate, the silane coupling agent and the prefluor-4-methyl-2-amylene to a reaction kettle, refluxing, reacting, cooling to obtain the fluorosilicone polymer, adding the prepared fluorosilicone polymer, the thinner and the curing agent to a stirrer in sequence, and uniformly stirring to obtain the cleaning protective agent for the porcelain bottle of the transformer substation. The preparation method has the advantages of low cost, convenience in operation and high efficiency.
Owner:STATE GRID JIANGSU ELECTRIC POWER CO LTD MAINTENANCE BRANCH +2
Novel low-temperature phase-change thermal storage material and preparation method thereof
InactiveCN102585772AImprove performanceExothermic stableHeat-exchange elementsParaffin oilsPhase change
The invention discloses components of a phase-change thermal storage material and a preparation method of the phase-change thermal storage material. The phase-change thermal storage material consists of semi-refined No.58 industrial paraffin as a main material, and dodecanoic acid (lauric acid) as an additive. The preparation process comprises the following steps that: the semi-refined No.58 industrial paraffin is melted by heating at a temperature of 56 DEG C to 68 DEG C, and the dodecanoic acid (lauric acid) as the additive is added after the paraffin is completely melted, and is uniformly stirred; a mixture is re-heated to raise the temperature in the stirring process, so that the mixture is fully and uniformly stirred into a fluid shape; and finally, the fluid-like product is poured into a container to be encapsulated. The low-temperature phase-change thermal storage material provided by the invention has the advantages that the phase-change latent heat is high, the phase-change temperature is between 54 DEG C and 57 DEG C, as proved by repeated tests, the performance is stable, and the phase separation phenomenon cannot occur, and the like.
Owner:SHANGHAI MARITIME UNIVERSITY
High-heat-resistance single-component adhesive and preparation method thereof
PendingCN113736401AWide reaction temperature rangeExothermic stableNon-macromolecular adhesive additivesEpoxynovolac adhesivesImidePolymer science
The invention discloses a high-heat-resistance single-component adhesive and a preparation method thereof. The high-heat-resistance single-component adhesive is characterized by being prepared by mixing the following components in parts by weight: 5 to 30 parts of toughening modified bismaleimide resin, 15 to 55 parts of epoxy resin, 0.1 to 5 parts of epoxy active diluent, 3 to 18 parts of a latent curing agent, 0.01 to 0.5 part of a defoaming agent, 0.01 to 0.5 part of a wetting dispersant, 0.1 to 5 parts of a catalyst and 5 to 60 parts of an inorganic filler. The preparation method comprises the following steps: preparing bismaleimide resin, carrying out toughening modification treatment, adding the toughening modified bismaleimide resin and other raw materials into a vacuum planetary mixer, and carrying out mixing. The high-heat-resistance single-component adhesive disclosed by the invention has the characteristics of gentle heat release in a curing process, high heat resistance of a cured product, high toughness, low thermal expansion coefficient, good high and low temperature impact resistance and the like, and is suitable for bonding and sealing of electronic and electric appliance elements and metal and nonmetal devices with heat resistance and environment temperature requirements.
Owner:艾蒙特成都新材料科技有限公司
Control method for constant-temperature water return of solid regenerating furnace
InactiveCN111637633AExothermic stableReturn water temperature is stableFluid heatersThermodynamicsProcess engineering
The invention discloses a control method for constant-temperature water return of a solid regenerating furnace and relates to the technical field of solid regenerating furnace automation control. According to the control method, the water return temperature is a set value, an ideal real-time changing outlet water temperature value is calculated through an empirical equation, the outlet water temperature can be controlled precisely through single-stage or two-stage PID adjustment, and constant-temperature water return is achieved by controlling the real-time changing outlet water temperature. The control method has the beneficial effects that response is made to environment temperature change in time, the outlet water temperature value needed by keeping the constant water return temperaturebeing the set value is calculated, adjustment is conducted automatically according to the calculated outlet water temperature, and thus the water return temperature is basically constant to be near the set value; and in addition, the regenerating furnace releases heat stably, the state that a fan stops or starts suddenly does not exist, the constant water return temperature is the set value, theovershoot is plus or minus 0.5 DEG C, the regenerating furnace releases heat stably, thus energy is saved, and the water return temperature can also be stabilized.
Owner:青海绿能数据有限公司
High-toughness bi-component epoxy structural adhesive and preparation method thereof
PendingCN112680156AMeet needsReduce defectsNon-macromolecular adhesive additivesMacromolecular adhesive additivesPolymer scienceAdhesive
A high-toughness double-component epoxy structural adhesive comprises a component A and a component B which are mutually independent, the component A comprises 30-70 wt% of epoxy resin, 10-20 wt% of an active diluent, 0-15 wt% of an active toughening agent, 10-30 wt% of a filler and 1-5 wt% of an auxiliary agent, and the component B comprises 60-90 wt% of a curing agent, 3-10 wt% of an active toughening agent, 1-5 wt% of a coupling agent, 1-8 wt% of an auxiliary agent and 10-20 wt% of a filler. The component A and the component B are mixed according to the volume ratio of 1: (0.8-1.2) to obtain the high-toughness double-component epoxy structural adhesive. The component A and the component B of the structural adhesive are long in independent storage period, after the component A and the component B are mixed, the curing rate is low, heat release is stable, volume shrinkage is small, formed colloid defects are few, the epoxy structural adhesive obtained through mixing is quite excellent in toughness, T peel strength, impact peel strength and lap joint shear strength for metal bonding, and after curing, a sea island structure is formed, so that the structural adhesive has excellent impact resistance.
Owner:重庆德天汽车新材料研究院有限公司
Copolymer thickener and preparation method thereof
The invention belongs to the field of thickeners, and discloses a copolymer thickener. The copolymer thickener is a poly(alpha,beta-unsaturated carboxylic acid / N-alkyl acrylamide / N-vinyl pyrrolidone) crosslinking copolymer; the mass ratio of N-alkyl acrylamide to alpha,beta-unsaturated carboxylic acid to N-vinyl pyrrolidone is (3 to 18):(65 to 87):(4 to 25). The copolymer thickener has the advantages that the copolymer thickener is easily dispersed into water; a hydrogel has proper elasticity and ductility, the sticking is easy, and the skin smoothness and tightness effects are both realized. The invention also provides a preparation method of the thickener.
Owner:GUANGZHOU TINCI MATERIALS TECH
Stearic acid-based high-performance medium-temperature phase change energy storage material and preparation method thereof
InactiveCN102786911ALarge latent heat of phase changePhase transition temperature is suitableHeat-exchange elementsChemistryThermal energy storage
The invention relates to a stearic acid-based high-performance medium-temperature phase change energy storage material, which comprises the following raw materials by weight: 39-95% of pure stearic acid; and 5-61% of an additive. The preparation method comprises the following steps of: (1) mixing the pure stearic acid with the additive, and melting the mixture completely under a temperature condition of lower than or equal to 80DEG C; (2) carrying out stirring and mixing the materials fully and uniformly; and (3) performing packaging. The medium-temperature phase change energy storage material provided in the invention has the advantages of abundant raw materials, simple preparation, as well as great phase change latent heat (160J / g-220J / g), and can be applied to temperature regulation and thermal energy storage in a temperature range of 30-70DEG C, and especially has broad application prospects in daily necessity heat preservation, water heater energy storage, temperature control and regulation of electrical equipment and other aspects.
Owner:TIANJIN UNIVERSITY OF SCIENCE AND TECHNOLOGY
Solar heat collection generation device and novel solar-geothermal energy combined heat collection generation system
PendingCN108413626AHigh heat storage densitySmall heat storage volumeSolar heating energySolar heat collector controllersGeothermal heatingEngineering
The invention discloses a solar heat collection generation device and a novel solar-geothermal energy combined heat collection generation system, and belongs to the technical field of heat pumps. Thesolar heat collection generation device is composed of an inner cavity, a thermoelectric generator, a hot water storage layer, a phase change layer, a cold water storage layer, a shell, a glass hole and a V-shaped mirror surface. The novel solar-geothermal energy combined heat collection generation system comprises the solar heat collection generation device, a circulating water pump, a rectifyingtower, a condenser, a first heat exchanger, a first throttle valve, an ammonia water circulating pump, a second throttle valve, an absorption tower, a second heat exchanger, an evaporator, a geothermal drainage pipe and a user side. The solar heat collection generation device is low in processing difficulty, and a pipeline is easy to clean; and the combined heat collection generation system reduces intermediate links of heat supply and cool supply, and improves energy conversion and utilization efficiency.
Owner:NANJING NORMAL UNIVERSITY
O-phenyl type photo-curable unsaturated polyester resin and preparation method thereof
The invention discloses o-phenyl type photo-curable unsaturated polyester resin comprising the following components in parts by weight: 10-15 parts of maleic anhydride, 18-25 parts of tetrahydrophthalic anhydride, 10-15 parts of ethylene glycol, 10-15 parts of propylene glycol, 25-30 parts of styrene, 2-5 parts of a composite photoinitiator, 1-3 parts of an ultraviolet absorbent, 0.3-0.5 part of aleveling agent and 0.08-0.1 part of methylhydroquinone. The prepared o-phenyl type photo-curable unsaturated polyester resin has the characteristics of medium viscosity, medium reaction activity, mild heat release and high solid content, and can be cured rapidly under the action of the accelerator and the photo-initiator. The material processed and molded by the o-phenyl type photo-curable unsaturated polyester resin has good light transmittance, jade texture, durable weathering resistance, and low curing shrinkage. When forming a molding sheet product with complex and deep structure, crackscan be guaranteed not to be easily produced in the deep structure.
Owner:惠州市固德尔合成材料有限公司
Environment-friendly production method for permanent violet RL
InactiveCN102504567BHigh yieldReduce solubilityChemical recyclingOxazine dyesSulfonyl chlorideSodium acetate
The invention discloses an environment-friendly production method for permanent violet RL, which comprises the following: (1) a step of alkylation which is to prepare liquid caustic soda, add a carbazole raw material, a catalyst and pure benzene in turn, drip bromoethane, stand the solution and separate out N-ethyl carbazole; (2) a step of nitration, which is to add the N-ethyl carbazole and chlorobenzene, drip nitric acid of which the weight percentage concentration is 36.5 to 37.5 percent, and separate out an intermediate 3-nitro-N-ethyl carbazole; (3) a step of reduction, which is to add chlorobenzene, 3-nitro-N-ethyl carbazole and an iron catalyst in turn, drip hydrazine hydrate to obtain a solution of 3-animo-N-ethyl carbazole and ortho-dichlorobenzene; (4) a step of condensation, which is to add ortho-dichlorobenzene into the solution of 3-animo-N-ethyl carbazole and ortho-dichlorobenzene, add tetrachlorobenzoquinone, drip sodium acetate and obtain a permanent violet RL condensation compound; and (5) a step of ring-closing reaction, which is to add benzene sulfonyl chloride, filter the solution, wash a filter cake, dry and obtain coarse permanent violet RL. The method has high conversion rate and is environment-friendly.
Owner:东台市新锦泰化工有限公司
Curing adhesive used for preparation of microsection sample of printed circuit and preparation method thereof
ActiveCN106398555ASimple componentsSimple and fast operationOrganic non-macromolecular adhesiveAdhesiveRoom temperature
The invention specifically relates to a curing adhesive used for preparation of a microsection sample of a printed circuit and a preparation method thereof, belonging to the technical field of metallographical detection of printed circuits. The curing adhesive is composed of a component A and a component B. The component A comprises, by mass, 98.5 to 99.5% of an acrylate polymer, 0.5 to 1.5% of an initiator and 0.1 to 0.5% of a surfactant; and the component B comprises 50 to 70% of acrylate monomer, 0.45 to 1% of a promoter and 30 to 50% of a cosolvent. In use, the component A and the component B are uniformly mixed according to a mass ratio of 1.5 to 2.5, and the obtained mixture is cured in an inlaid mold at room temperature for 0.5 to 1.5 h. The curing adhesive provided by the invention is simple in composition; the preparation method is simple to operate and low in cost; and the curing adhesive is fast in molding, slow in heat release, good in transparency, high in bonding strength with a microsection and applicable to preparation of the microsection sample of the printed circuit and to metallographic observation and analysis.
Owner:UNIV OF ELECTRONICS SCI & TECH OF CHINA
Preparation method for high-performance room-temperature calcium-based composition phase-change energy storage material
The invention relates to a preparation method for a high-performance room-temperature calcium-based composition phase-change energy storage material. The preparation method includes the following steps: (1) calcium chloride or hydrate of the calcium chloride is dissolved in water according to the molar ratio of 1:6, so that calcium chloride solution is prepared, and the calcium chloride solution is placed under the constant temperature of 30 DEG C to 40 DEG C for later use; (2) calcium bromide or hydrate of the calcium bromide is dissolved in water according to the molar ratio of 1:6, so that calcium bromide solution is prepared, and the calcium bromide solution is placed under the constant temperature of 30 DEG C to 40 DEG C for later use; (3) the calcium chloride solution and the calcium bromide solution are mixed according to a proportion to form mixed solution, and are constantly stirred, so that the calcium chloride solution and the calcium bromide solution are sufficiently and uniformly mixed into the form of fluid; (4) nucleating agent and functional additive are added into the mixed solution, and the prepared brine compound is filled into a container and packaged. The low-temperature phase-change material prepared by the invention has the advantages that: the price is low, the latent heat of phase change is 160J / g to 200J / g, the phase-change temperature is between 17 DEG C and 28 DEG C, repeated tests prove that the performance of the phase-change energy storage material is stable, and phase separation does not exist. The phase-change energy storage material can be widely applied to energy efficiency in buildings, heating and temperature regulation in interior decoration, solar energy utilization, energy efficiency in vegetable greenhouses and other aspects.
Owner:TIANJIN UNIV OF SCI & TECH
Who we serve
- R&D Engineer
- R&D Manager
- IP Professional
Why Patsnap Eureka
- Industry Leading Data Capabilities
- Powerful AI technology
- Patent DNA Extraction
Social media
Patsnap Eureka Blog
Learn More Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic, Popular Technical Reports.
© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com