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Molded normal temperature curing urethane resin composition and preparation method thereof
The invention discloses molded normal temperature curing urethane resin composition and a preparation method thereof. The compound comprises A type substance and B type substance which are packed independently, wherein the A type substance comprises prepolymer prepared by polymer polylol and isocyanate, carbon soot, filling, ultraviolet light absorbing agent, chemical inhibitor, wetting agent, deicer, foam suppressor, coupling agent and plasticizer; the B type substance is chain extendor; and the ratio of the quantity of active functional group substance of the B type substance to the quantity of active functional group substance of the A type substance is 0.8-1.0. The preparation method comprises the following steps: preparing and cooling the prepolymer capped by the isocyanate for reservation; preparing the A type substance; directly packing the chain extendor or packing the chain extendor after being diluted to be used as the B type substance; evenly mixing the measured A and B types of substances and maintaining the mixture under normal temperature to obtain the molded normal temperature curing urethane resin composition. The molded normal temperature curing urethane resin composition has good constructional processing property and is easy and convenient to prepare.
Owner:胡旻辉
Epoxy resin modified silica sol based high-temperature-resistant hydrophobic coating and preparation method thereof
The invention discloses an epoxy resin modified silica sol based high-temperature-resistant hydrophobic coating which is composed of the following components in percentage by mass: 60-65% of epoxy resin modified silica sol, 7-9% of rutile titanium dioxide, 8-12% of glass dust, 9-10% of sericite powder, 0.5-1% of organic bentonite and 9-14% of butyl acetate. The preparation method is implemented through the following steps of: preparing epoxy resin modified silica sol firstly, reacting gamma-triethoxypropylsilane with epoxy resin, and then adding tetraethoxysilane for carrying out hydrolytic condensation; adding filler and a solvent in the prepared product in proportion, and carrying out high-speed mixing and grinding on the obtained mixture until the fineness of the obtained product is below 50 mu m so as to obtain the coating disclosed by the invention. A film prepared by dying and solidifying the coating disclosed by the invention has the advantages of good mechanical properties, excellent hydrophobic properties, good high temperature resistance and weather resistance, and the like. The coating is applicable to the high-temperature-resistant protection and decoration of metal substrates such as aluminum plates, tinplate and steel plates.
Owner:JIANGSU UNIV OF SCI & TECH
Method for preparing polyurethane adhesive by modifying waste polyurethane recovery product by using montmorillonite
ActiveCN104694064AEfficient use ofHigh mechanical strengthNon-macromolecular adhesive additivesPolyureas/polyurethane adhesivesPolyurethane elastomerPolyurethane adhesive
The invention relates to a method for preparing polyurethane adhesive by using waste polyuret0hane recovery product by using montmorillonite. The method comprises the following steps: (1) using the waste polyurethane elastomer as a raw material, adding an alcoholysis agent and an auxiliary alcoholysis agent, degrading the waste to obtain regenerated polyol by heating and under a certain of reducing atmosphere condition; (2) secondarily modifying the montmorillonite; (3) adding auxiliary and the secondarily modified montmorillonite in the regenerated polyol to obtain the polyurethane adhesive. The regenerated polyol obtained through the invention is stable in property, uniform in molecular weight, and small in viscosity number, and a hydroxyl value meets the use requirement of the polymer polyol; the secondarily modified montmorillonite is used for modifying the adhesive, the use performance and the applicable range of the adhesive are greatly improved, the tensile strength is improved by 38% and more, the bending strength and the bending modulus are improved by 40% and more.
Owner:SHANGHAI HECHENG POLYMER TECH CO LTD
Deinking agent for screen-net printing electrolytic nickel polar sheet and preparation thereof
InactiveCN101255293AImprove thixotropyThixotropy is fast and efficientChemical paints/ink removersParaffin waxHexamethylenetetramine
The invention provides a deinking agent of electrolytic nickel button plate for screen printing and preparation method thereof, comprising(by weight percentage): 61.1-66.7% of methylene chloride, 0-19.4% of phenol, 8.3-16.7% of formic acid, 2.8-8.3% of acetic acid, 1.4-2.8% of methyl cellulose, 0.7-2% of organobentonite, 2-3.1% of maleic rosin octylphenol polyoxyethylene ether sodium dicarboxylic acid, 1.4-2.8% of hexamethylenetetramine, 0-1.4% of benzotriazole, 2.8-4.2% of olefin. The preparation method comprises: getting the materials ready; putting the olefin into the blending kettle with jacket; steam heating the jacket and intermediately stirring and stopping heating when the olefin completely fuses at 60 degree; continually stirring and slowly adding methylene chloride and cooling the jacket to normal temperature by tap water; continually stirring and slowly adding phenol, formic acid and acetic acid and then adding the methyl cellulose, organobentonite, maleic rosin octylphenol polyoxyethylene ether sodium dicarboxylic acid, hexamethylenetetramine, benzotriazole in turn, when the phenol completely dissolves.
Owner:LANZHOU UNIVERSITY OF TECHNOLOGY
Cement asphalt (CA) mortar for polymer cement substrate type ballastless track and preparation method thereof
The invention discloses cement asphalt (CA) mortar for a polymer cement substrate type ballastless track and a preparation method thereof, and relates to a building material for pouring the track bed of a high speed railway and a production method thereof. The CA mortar is a mixture which is formed by mixing CA mortar dry powder, CA mortar emulsified asphalt and water in the weight part ratio of 100:(50-55):(4-8), wherein the CA mortar dry powder is a mixture which consists of cement, an expansion agent, a cement quick setting agent, an antifoaming agent, a high-performance water reducer, fine sand, lignocellulose and cellulose ether; and CA mortar emulsion is slow-breaking slow-setting anionic emulsified asphalt and acrylic latex composite emulsion. The production method of the CA mortar comprises the following steps of: preparing materials, stirring the mortar emulsion and the water, adding the mortar dry powder, stirring, checking and the like. The CA mortar rubber powder and the CA mortar emulsion for producing the CA mortar are industrially produced, and the product quality is stable; the CA mortar is convenient to process and transport; and the preparation process does not have a strict stirring and charging sequence, so that the construction is convenient and quick.
Owner:卢建华
Conductive anticorrosion paint and preparation method thereof
InactiveCN108587288AGood construction technologyRealize the conductive functionFireproof paintsAnti-corrosive paintsGrounding gridSolvent
The invention discloses a conductive anticorrosion paint and a preparation method thereof. The paint is mainly composed of phenolic resin, a phenolic resin curing agent, a conductive filling material,an antiseptic, a diluent, a fire retardant, and a solvent. The conductive anticorrosion paint employs a spraying mode or a brush coating mode to prepare a conductive anticorrosion coating layer on aprocessed workpiece surface, can be widely used for metal structural members such as an electric power industry grounding grid apparatus, a petrochemical industry oil storage apparatus and the like, realizes electric conduction, static powder conduction, and anticorrosion functions, and can achieve the on-site usage requirement. The preparation technology of the paint is simple, and the industrialproduction is easily realized.
Owner:HEFEI ANLI ELECTRIC POWER ENG CO LTD
Conductive anti-corrosion paint and preparation method thereof
InactiveCN108300048AImprove construction processImprove compatibilityAnti-corrosive paintsElectrically-conductive paintsSolventSpray coating
The invention discloses conductive anti-corrosion paint and a preparation method thereof. The conductive anti-corrosion paint is mainly prepared from the following ingredients in parts by weight: 24 to 44 parts of carboxyl acrylic resin, 16 to 32 parts of carboxyl acrylic resin curing agents, 4 to 12 parts of conductive filling materials, 0.5 to 3.2 parts of diluents, 0.8 to 3.8 part of preservatives, 0.3 to 1.6 parts of coupling agents, 0.2 to 0.8 part of flatting agents and 15 to 35 parts of solvents. The paint recipe and proportion are optimized, so that the conduction and anti-corrosion functions of the paint are realized; the spray coating or brush coating mode is used for preparing the conductive anti-corrosion coating on the surface of the treated workpiece; the paint can be widelyused on metal structure elements of electric industry grounding net device, petrochemical industry oil storage devices and the like; the functions of conduction, static electricity conduction, anti-corrosion and the like can be realized; the field use requirements are met.
Owner:合肥卓创新材料有限公司
Brucite fiber paste used for toughening cement-based materials and preparation method thereof
The invention relates to brucite fiber paste used for toughening cement-based materials and a preparation method thereof. The brucite fiber paste comprises natural brucite fibers, water reducing agents and water in a weight ratio of 1:(0.2-1.2):(0.15-0.75), wherein, the natural brucite fiber is of grade 6 or 7. The preparation method is characterized by adding the above raw materials into a forcedmechanical mixer to be mixed and stirred for 5-15min and then placing the mixture for more than 24h in an airtight mode. The brucite fiber paste is used in cement concrete as a toughening material. The usage of the brucite fiber paste in the cement concrete is 5-15% of that of the cement. The brucite fiber paste and other raw materials are simultaneously added into the mixer while the cement concrete is blended, and are mixed for 2-4min. The brucite fiber paste is used for the concrete, enjoys good fiber split property, good construction technological property and low cost, is easily dispersed in the concrete, can avoid dust fly while the concrete is blended and ensures obvious fiber toughening effect.
Owner:CHANGAN UNIV
Method for preparing high-temperature blending epoxy asphalt curing agent for paving
InactiveCN105754074AGood construction technologyImprove low temperature toughnessBridge deckRoad surface
The invention relates to a method for preparing a high-temperature blending epoxy asphalt curing agent for paving and the application of the high-temperature blending epoxy asphalt curing agent in epoxy asphalt.A hyperbranched polymer which contains an aromatic amine group and a hydroxyl group is generated through condensation reaction of hyperbranched polyether containing hydroxy and aromatic amino acid under the action of a catalyst and aliphatic acid anhydride to obtain the high-temperature blending epoxy asphalt curing agent.The curing agent has a highly branched molecular structure and low viscosity, has a low reaction speed with epoxy resin at a high temperature, can be used for preparation of high-temperature blending epoxy asphalt, and still has certain reactivity at indoor temperature.Raw material source is wide, and preparing process is simple.The method can be used for preparing high-temperature blending epoxy asphalt for high-grade road surface and bridge deck pavement and has the advantages that high-temperature viscosity is low, reserved time is long, and curing crosslinking can be achieved fast at indoor temperature.
Owner:CHANGAN UNIV
High-speed railway ballastless track convex blocking table filling material and preparation method thereof
ActiveCN112280326ASatisfy cohesivenessMeet aging resistanceBuilding insulationsPolymer sciencePolymer network
The invention provides a high-speed railway ballastless track convex blocking table filling material and a preparation method thereof. The material comprises the following raw materials: a component Amaleimide modified asphalt, a component B epoxy resin and a component C epoxy resin curing agent, the component C is prepared from the following raw materials in parts by weight: 100 parts of a polyether amine curing agent, 20-45 parts of a blocked polyurethane prepolymer, 10-20 parts of amino polydimethylsiloxane, 0-2.5 parts of a curing accelerator and 5-17.5 parts of an auxiliary agent; the mass ratio of the component B to the component C is 1: (0.65-1.35), and the mass ratio of the component A to the sum of the component B and the component C is (0.5-1.5): 1. After the filling material iscured, an epoxy resin-polyurethane interpenetrating polymer network or island structure is formed, the flexibility of the material is greatly improved, and the shearing strength, the adhesive force,the tensile strength, the bending strength and the like of an adhesive layer are improved.
Owner:南京阿斯孚特新材料科技有限公司
Conductive anticorrosion coating and preparation method thereof
InactiveCN108250870AImprove corrosion resistanceGood construction technologyFireproof paintsAnti-corrosive paintsAcrylic resinCarbon nanotube
The invention discloses a conductive anticorrosion coating and a preparation method thereof. The coating is mainly prepared from acrylic resin, an acrylic resin curing agent, a carbon nanotube, spherical graphite, nanometer conductive carbon black, an anticorrosion agent, a diluent, a flame retardant and a solvent. The conductive anticorrosion coating adopts a spraying or brushing mode to preparea conductive and anticorrosion coating layer on the surface of a well-treated workpiece, and can be widely applied to metal structural pieces such as grounding grid devices in the power industry and oil storage devices in the petrochemical industry, achieves the functions of electricity conduction, static electricity conduction and corrosion resistance, and meets the field service requirement. Thepreparation technology of the coating is simple, and industrialized production can be achieved easily.
Owner:尚福平
Conductive coating for computers and preparation method thereof
InactiveCN108410341ARealize the conductive functionConductive function hasAnti-corrosive paintsPolyurea/polyurethane coatingsConductive coatingPolyester resin
The invention discloses a conductive coating for computers and a preparation method thereof. The coating is mainly prepared from polyester resin, polyester resin curing agent, conductive filler, nano-silver powder, ethyl cellulose, anticorrosive agent, thinner and solvent. The conductive coating for computers which is disclosed by the invention has excellent conductivity; with high adhesion, the conductive coating cannot be easily stripped; moreover, the conductive coating has relatively good corrosion resistance; the preparation method is simple; and the conductive coating is suitable for large-scale production and application.
Owner:合肥酷睿网络科技有限公司
Waterborne epoxy anticorrosive paint and preparation method thereof
InactiveCN113015771ALow VOC contentLow costAnti-corrosive paintsEpoxy resin coatingsPolymer scienceFirming agent
The waterborne epoxy anticorrosive paint comprises a component A and a component B. The component A comprises waterborne epoxy resin A, waterborne epoxy resin B, a dispersing agent, a defoaming agent, a wetting agent, a thixotropic agent, an anti-flash agent, pigment, filler and deionized water, the component B comprises a curing agent and deionized water, and the curing agent is an amine curing agent. The invention further provides a preparation method of the waterborne epoxy anticorrosive paint. The preparation method comprises a specific mixing sequence and process parameters.
Owner:XIAMEN SUNRUI SHIP COATING
A method for preparing polyurethane adhesive by using montmorillonite modified waste polyurethane recycling product
ActiveCN104694064BEfficient use ofHigh mechanical strengthNon-macromolecular adhesive additivesPolyureas/polyurethane adhesivesPolyurethane adhesiveFlexural strength
The invention relates to a method for preparing polyurethane adhesive by using waste polyuret0hane recovery product by using montmorillonite. The method comprises the following steps: (1) using the waste polyurethane elastomer as a raw material, adding an alcoholysis agent and an auxiliary alcoholysis agent, degrading the waste to obtain regenerated polyol by heating and under a certain of reducing atmosphere condition; (2) secondarily modifying the montmorillonite; (3) adding auxiliary and the secondarily modified montmorillonite in the regenerated polyol to obtain the polyurethane adhesive. The regenerated polyol obtained through the invention is stable in property, uniform in molecular weight, and small in viscosity number, and a hydroxyl value meets the use requirement of the polymer polyol; the secondarily modified montmorillonite is used for modifying the adhesive, the use performance and the applicable range of the adhesive are greatly improved, the tensile strength is improved by 38% and more, the bending strength and the bending modulus are improved by 40% and more.
Owner:SHANGHAI HECHENG POLYMER TECH CO LTD
Repairing method of low temperature tank heat insulation layer
InactiveCN104279420AHigh bonding strengthEasy constructionPressure vesselsInsulation layerEngineering
The invention provides a repairing method of a low temperature tank heat insulation layer. The method is characterized in that the heat insulation layer is repaired by adopting an ultralow temperature resistant pressure sensitive adhesive. The developed ultralow temperature resistant pressure sensitive adhesive is used in a quick repairing method of the damaged heat insulation layer of the low temperature storage of a new generation carrier rocket. The method has the advantages of no need of a solvent, no need of onsite preparation of the adhesive, clean field, simple construction, and high bonding strength of the pressure sensitive adhesive at an ultralow temperature; and the ultralow temperature resistant pressure sensitive adhesive has the advantages of no solvent, low curing temperature, short curing time, and no influences on the performances of the heat insulation layer and environmental protection of the curing process.
Owner:SHANGHAI AEROSPACE EQUIP MFG GENERAL FACTORY
Doubly-fed wind generator slip ring chamber cooling structure
PendingCN113708570AReduce the temperatureReduce eddy current lossWind energy generationCooling/ventillation arrangementEngineeringBrush
The invention relates to a doubly-fed wind generator slip ring chamber cooling structure. The cooling structure comprises a shell with a polygonal longitudinal section, an air inlet window is fixedly installed on the lateral lower portion of the shell, a first air guide plate and a second air guide plate are installed on the inner side of the air inlet window, an air channel is formed between the first air guide plate and the second air guide plate, and a first cover plate is fixedly installed on the lateral upper portion of the shell. A third air guide plate is installed on the inner side of the first cover plate, the front edge of the third air guide plate partially extends into the brush frame of the sliding ring chamber, a back plate is fixedly installed on the rear end face of the shell, an air outlet hole is formed below the back plate, and a cooling medium circulation air path is formed among the first air guide plate, the second air guide plate, the third air guide plate, the sliding ring and the brush frame. According to the slip ring chamber cooling structure, the air guide plates are effectively combined with the brush frame ring plate and the slip ring to form a tight air path structure, so that most of the cooling medium flows through the surfaces of each group of carbon brushes and slip rings and does not flow in the peripheral space between the brush holder and the slip ring chamber shell, and the temperature of the slip rings and the carbon brushes is reduced.
Owner:CRRC XIAN YONGE JIELI WIND ENERGY CO LTD
Application of ultra-low temperature resistant pressure-sensitive adhesive in rocket pipeline flexible foamed plastic bonding
The invention discloses application of an ultra-low temperature resistant pressure-sensitive adhesive in rocket pipeline flexible foamed plastic bonding. The application comprises the following steps: manufacturing a flexible foamed plastic precast block with ultra-low temperature resistant pressure-sensitive adhesive; manufacturing a pipeline with ultra-low temperature resistant pressure-sensitive adhesive; and bonding and pressing the flexible foamed plastic precast block on the corresponding position of the pipeline. The pipeline flexible foamed plastic bonding method and pipeline disclosed by the invention can meet requirements of the new generation of bonding flexible foamed plastic for carrying low-temperature rocket pipelines on site operation, being ready to use since being packaged, construction of foamed plastic bonding at minus 20-50 DEG C and ultra-low temperature resistance.
Owner:SHANGHAI AEROSPACE EQUIP MFG GENERAL FACTORY
Pipeline flexible foamed plastic pasting method and pipeline
InactiveCN104275909ALow curing temperatureShorten the timeMaterial gluingSynthetic resin layered productsAdhesiveMechanical engineering
The invention discloses a pipeline flexible foamed plastic pasting method and a pipeline. The pipeline flexible foamed plastic pasting method comprises the following steps: making a precast flexible foamed plastic block with an ultralow temperature resistant pressure-sensitive adhesive; making a pipeline with the ultralow temperature resistant pressure-sensitive adhesive; and pasting the precast flexible foamed plastic block to a corresponding position of the pipeline, and compacting. The pipeline flexible foamed plastic pasting method and the pipeline satisfy requirements of onsite construction, instant use after instant coating, construction of the foamed plastic pasting at -20-50DEG C, and ultralow temperature resistance of new generation carrier rocket low-temperature pipeline pasting flexible foamed plastics.
Owner:SHANGHAI AEROSPACE EQUIP MFG GENERAL FACTORY
Anti-corrosion sedimentation tank and building method thereof
InactiveCN102462981BLight weight high strengthHigh strengthSedimentation settling tanksElectrolysisStructural engineering
The invention discloses an anti-corrosion sedimentation tank and a building method thereof. A tank body is made of glass fiber reinforced plastics, so the anti-corrosion problem is solved; and a support frame, a support tank body, a raking machine arranged in the tank body and a driving device driving the raking machine to operate are made of carbon steel, so the problem that the tank body has poor rigidity and can not support the raking machine to normally work is solved. The raking machine is a carbon steel welding element, in addition, ethylene-chlorotrifluoroethylene copolymer (ECTFE) anti-corrosion coatings with the thickness not less than 1.5mm are integrally sprayed and coated on the surface of the raking machine, the intensity requirement of the raking machine is met, and the anti-corrosion problem of the raking machine is also solved. A scraping plate is covered by more than 8.5mm of glass fiber wires or cloth, and the coatings on the scraping plate are prevented from being damaged when the scraping plate is used for scraping materials settled at the bottom of the tank body. The anti-corrosion problem of the sedimentation tank is perfectly solved, simultaneously, the work stability of the sedimentation tank is also ensured, and the production requirement of the electrolysis industry is met. The anti-corrosion sedimentation tank has the advantages that the structure is compact, the operation is stable, the sedimentation effect is good, economy and practicability are realized, and the like.
Owner:GUIYANG AL-MG DESIGN & RES INST
A kind of heat-resistant coating and preparation method thereof
Owner:AEROSPACE RES INST OF MATERIAL & PROCESSING TECH +1
Brucite fiber paste used for toughening cement-based materials and preparation method thereof
The invention relates to brucite fiber paste used for toughening cement-based materials and a preparation method thereof. The brucite fiber paste comprises natural brucite fibers, water reducing agents and water in a weight ratio of 1:(0.2-1.2):(0.15-0.75), wherein, the natural brucite fiber is of grade 6 or 7. The preparation method is characterized by adding the above raw materials into a forced mechanical mixer to be mixed and stirred for 5-15min and then placing the mixture for more than 24h in an airtight mode. The brucite fiber paste is used in cement concrete as a toughening material. The usage of the brucite fiber paste in the cement concrete is 5-15% of that of the cement. The brucite fiber paste and other raw materials are simultaneously added into the mixer while the cement concrete is blended, and are mixed for 2-4min. The brucite fiber paste is used for the concrete, enjoys good fiber split property, good construction technological property and low cost, is easily dispersed in the concrete, can avoid dust fly while the concrete is blended and ensures obvious fiber toughening effect.
Owner:CHANGAN UNIV
Structural system and construction method of integrated multi-cavity pipeline for oil and gas multi-phase transportation
ActiveCN110630826BLong-term airtightness is goodChange connection methodThermal insulationMouldsPipeMechanical engineering
An integrated multi-cavity pipeline structure system and construction method for oil and gas multiphase transportation, relating to the pipeline technology field, which is formed by connecting three pipelines through GFRP anti-buckling energy-dissipating dampers in sequence, and the axes of the three pipelines are connected in sequence to form Equilateral triangle, each pipeline includes a single pipe and an integral node, the single pipe includes an outer GFRP round pipe, an inner GFRP round pipe and a self-compacting fine stone concrete layer, bolt holes are provided at both ends of the single pipe ;The outer wall of the outer GFRP circular tube is provided with reserved bolt holes for the outer GFRP circular tube; the two pipeline monomers are connected by an integral node, and the integral node is connected by high-strength bolts and bolt holes at the ends of the two pipeline monomers Connection, the outer wall of the integral node is provided with concrete pouring holes and air vents, and the concrete pouring holes and air vents are distributed at intervals. The structure system and construction method of the integrated multi-cavity pipeline for oil and gas multiphase transportation solve the problems of small diameter, poor stability and impermeability of traditional pipelines.
Owner:NORTHEAST GASOLINEEUM UNIV
Halogen-free flame-retardant insulating paint and preparation method thereof
ActiveCN112759966AImprove flame retardant performanceFast curingFireproof paintsPolyester coatingsFlame resistanceFirming agent
The invention discloses halogen-free flame-retardant insulating paint and a preparation method thereof. The insulating paint is prepared from the following raw materials: phosphorus-containing unsaturated polyester resin, silicon-containing epoxy resin, bifunctional methacrylate, a curing agent, an accelerant, an initiator and a selectable flame retardant, the insulating paint is prepared by the following method: adding the prepared phosphorus-containing unsaturated polyester resin and silicon-containing epoxy resin into a reaction kettle, heating, vacuumizing and reacting, gradually cooling, sequentially adding the bifunctional methacrylate, the accelerant, the flame retardant, the curing agent and the initiator, filtering and packaging to obtain the insulating paint. The special phosphorus-containing unsaturated polyester resin and the silicon-containing epoxy resin are adopted and combined with the bifunctional methacrylate, an insulating layer formed after the insulating paint is cured has good flame retardance, proper viscosity is controlled, rapid curing at a low temperature can be achieved, and the use manufacturability is good.
Owner:SUZHOU TAIHU ELECTRIC ADVANCED MATERIAL CO LTD +1
A two-component addition type silicone pouring sealant with excellent comprehensive performance and a preparation method and application thereof
The application belongs to the technical field of pouring sealant, and particularly relates to a two-component addition type organic silicon pouring sealant with excellent comprehensive performance, a preparation method and application. The organic silicon pouring sealant provided by the application, on one hand, uses four kinds of particle size heat-conducting fillers, improves the mass ratio and type, significantly enhances the heat-conducting performance of the organic silicon pouring sealant and reduces the viscosity; on the other hand, uses a silane coupling agent with double reactive groups to modify the heat-conducting filler, forms a more stable 'double anchoring' structure in the organic silicon pouring sealant; and on the other hand, uses a latent type silicon hydrogen addition reaction catalyst, improves the stability of room temperature storage, and realizes slow release in the silicon hydrogen addition reaction process; so that through the improvement of the heat-conducting filler, the silane coupling agent and the catalyst and the like, the comprehensive performance of the organic silicon pouring sealant is significantly improved, the packaging of various high-power electronic components can be met, and the technical problem of low comprehensive performance of the organic silicon pouring sealant in the prior art is solved.
Owner:FOSHAN TIANBAOLI SILICON ENG TECH CO LTD
Large-diameter long-distance intelligent heat preservation combined pipeline structure and its construction method
ActiveCN110630821BGood long-term airtightnessChange connection methodThermal insulationMouldsTemperature controlClassical mechanics
A large-diameter long-distance intelligent thermal insulation composite pipeline structure and its construction method relate to the technical field of pipelines and include pipeline monomers and integral joints. The pipeline monomers include outer GFRP round pipes, inner GFRP round pipes, and self-compacting Fine stone concrete layer and annular heat transfer plate, bolt holes are provided at both ends of the pipe unit; the outer wall of the outer GFRP round pipe is provided with reserved bolt holes and heat pipe installation holes for the outer layer GFRP round pipe, and the outside of the heat pipe installation hole Install a steel anchor frame with a temperature control device on the steel anchor frame, which is connected to the annular heat transfer plate; the two pipeline monomers are connected through an integral node, and the integral node is connected to the two pipeline monomers through high-strength bolts Connection, the outer wall of the integral node is provided with concrete pouring holes and air vents, and the concrete pouring holes and air vents are distributed at intervals. The large-diameter long-distance intelligent thermal insulation composite pipeline structure and its construction method solve the problems of small diameter, poor stability, poor impermeability of traditional pipelines and poor thermal insulation performance of conveying media in high and severe cold areas.
Owner:NORTHEAST GASOLINEEUM UNIV
High temperature resistant hydrophobic coating based on epoxy resin modified silica sol and preparation method thereof
The invention discloses an epoxy resin modified silica sol based high-temperature-resistant hydrophobic coating which is composed of the following components in percentage by mass: 60-65% of epoxy resin modified silica sol, 7-9% of rutile titanium dioxide, 8-12% of glass dust, 9-10% of sericite powder, 0.5-1% of organic bentonite and 9-14% of butyl acetate. The preparation method is implemented through the following steps of: preparing epoxy resin modified silica sol firstly, reacting gamma-triethoxypropylsilane with epoxy resin, and then adding tetraethoxysilane for carrying out hydrolytic condensation; adding filler and a solvent in the prepared product in proportion, and carrying out high-speed mixing and grinding on the obtained mixture until the fineness of the obtained product is below 50 mu m so as to obtain the coating disclosed by the invention. A film prepared by dying and solidifying the coating disclosed by the invention has the advantages of good mechanical properties, excellent hydrophobic properties, good high temperature resistance and weather resistance, and the like. The coating is applicable to the high-temperature-resistant protection and decoration of metal substrates such as aluminum plates, tinplate and steel plates.
Owner:JIANGSU UNIV OF SCI & TECH
A kind of polyurethane damping floor material and preparation method thereof
ActiveCN109705720BIncrease lossGood vibration and noise reductionFireproof paintsPolyurea/polyurethane coatingsPolymer sciencePtru catalyst
The invention discloses a polyurethane damping floor material and a preparation method thereof. The material includes a two-layer structure of a damping layer and a constraining layer. Among them, the damping layer material is a two-component solvent-free polyurethane material, including A component and B component. A component is a polyurethane prepolymer with an isocyanate content of 3%~6%, and B component is a curing agent. The ingredients are chain extender, liquid flame retardant, functional filler, catalyst, defoamer, etc. Constraining layer material is polyaspartic acid ester type polyurethane material, including A component and B component, A component is HDI trimer, isocyanate content is 15%~20%, B component is curing agent , the main components are polyaspartate chain extender, liquid flame retardant, solid flame retardant, molecular sieve, defoamer, etc. The material can be widely used in vibration and noise reduction of home decoration, floors, workshops and other grounds. The material has good damping performance, flame retardant performance, wear resistance and construction process performance.
Owner:QINGDAO ADVANCED MARINE MATERIAL TECH
Reinforcing device and method used for constructing concrete wall as well as concrete wall
ActiveCN111456287AImprove securityPrecise positioningWallsBuilding material handlingArchitectural engineeringRock bolt
Owner:湖南省第五工程有限公司
Molded normal temperature curing urethane resin composition and preparation method thereof
The invention discloses molded normal temperature curing urethane resin composition and a preparation method thereof. The compound comprises A type substance and B type substance which are packed independently, wherein the A type substance comprises prepolymer prepared by polymer polylol and isocyanate, carbon soot, filling, ultraviolet light absorbing agent, chemical inhibitor, wetting agent, deicer, foam suppressor, coupling agent and plasticizer; the B type substance is chain extendor; and the ratio of the quantity of active functional group substance of the B type substance to the quantity of active functional group substance of the A type substance is 0.8-1.0. The preparation method comprises the following steps: preparing and cooling the prepolymer capped by the isocyanate for reservation; preparing the A type substance; directly packing the chain extendor or packing the chain extendor after being diluted to be used as the B type substance; evenly mixing the measured A and B types of substances and maintaining the mixture under normal temperature to obtain the molded normal temperature curing urethane resin composition. The molded normal temperature curing urethane resin composition has good constructional processing property and is easy and convenient to prepare.
Owner:胡旻辉
Structural system and construction method of integrated flat cavity pipeline for oil and gas multiphase transportation
InactiveCN110630823BLong-term airtightness is goodChange connection methodThermal insulationMouldsPipeMechanical engineering
A structural system and construction method of an integrated flat-cavity pipeline for oil and gas multiphase transportation, relating to the technical field of pipelines, which is formed by connecting two pipelines through GFRP anti-buckling energy-dissipating dampers, and the two pipelines are arranged side by side in parallel, and each pipeline includes Pipeline monomer and integral joint, the pipeline monomer includes outer GFRP round pipe, inner GFRP round pipe and self-compacting fine stone concrete layer, bolt holes are provided at both ends of the pipe monomer; the outer wall of the outer GFRP round pipe There are reserved bolt holes for the outer GFRP round pipe; the two pipeline monomers are connected by an integral node, and the integral node is connected with the bolt holes at the ends of the two pipeline monomers through high-strength bolts. There are concrete pouring holes and air vents, and the concrete pouring holes and air vents are distributed at intervals. The structure system and construction method of the integrated flat cavity pipeline for oil and gas multiphase transportation solve the problems of small diameter, poor stability and impermeability of traditional pipelines.
Owner:NORTHEAST GASOLINEEUM UNIV