6697results about How to "Improve temperature resistance" patented technology

The invention discloses a high temperature energy conservation corrosion resistant coating material, which comprises filling material, addition agent and adhesive by the weight ratio of 1-5:1:1-10. The invention also discloses the process for preparing the coating material, which comprises the steps of mixing filling material powder with addition agent proportionally, grinding to 600 mesh in a wet grinder, finally stirring and mixing with adhesive.

The invention discloses a petroleum wellhead annular space sealing device. The petroleum wellhead annular sealing device is used for sealing an annular space between a wellhead sealing body and a petroleum pipe, at least one annular groove is formed in the inner wall surface of the sealing body, and the sealing body is provided with an injection hole which is communicated to a centrifugal end of the annular groove; the petroleum wellhead annular space sealing device further comprises a sealing ring, a power ring, and an injection component, wherein the sealing ring is embedded into the annular groove, the sealing ring is used for sealing the groove in the radial direction by being jointed to the wall surface of the annular groove, and is used for sealing the annular space by being jointed to the outer wall of the petroleum pipe, the power ring is installed in the annular groove and is located between the groove bottom of the annular groove and the sealing ring, and the injection component is installed in an inlet of the injection hole, and is used for injecting fluid with given pressure so as to make the power ring push the sealing ring to tightly press the petroleum pipe. In the petroleum wellhead annular space sealing device, the requirement for deformation capability of a sealing part is low, and meanwhile the sealing capability can be effectively improved.

The invention discloses whole-oil synthetic base drilling fluid which mainly comprises following components: base liquid 100 parts, histosol 2-5 parts, viscosity increaser 0.5-3 parts, filtrate reducer 2-5 parts, wetting agent 0.5-2 parts, emulsifier 1-3 parts, calcium oxide 0.5 part and weighting agent 27-180 parts. The invention has the advantages that firstly, the rheological property is good and the plastic viscosity is low, secondly, the anti-temperature performance is good and anti-temperature can reach 150 DEG C, thirdly, the invention is provided with good water loss wall building performance with API filter loss content<5ml and high temperature and high pressure filter loss content <= 10 ml, fourthly, the anti-pollution ability is strong and the anti-poor soil ability and the anti-water invasion ability respectively reach 20%, and fifthly, reservoir has good protective effects and the permeability recovery value is over 85%.

A manufacturing method of modified hydrophilic Polyurethane memory foam and products thereof are disclosed. The starting material of the foam includes hydrophilic PU prepolymer, acrylic emulsion polymer and second polyether polyol. The hydrophilic PU prepolymer consists of a first polyether polyol and isocyanate. The molecular weight of the first polyether polyol ranges from 600 to 2000 and the first polyether polyol contains at least 40 mole % of -EO— where the content of the -EO— ranges from 20 to 99.9 wt %. The foaming agent is carbon dioxide produced by the reaction of isocyanate and the water. After foaming process, there is a heating step for dehydration. The foam has specific high hydrophilic polymer structure with features of shock absorbing, uniform pressure relief, moisture absorbency and heat absorbing so as to provide users dry and cool feelings. It wouldn't become rigid below 10 degrees Celsius.

The invention discloses a temperature resistant salt tolerant high efficiency gel and a preparation method and application thereof. The preparation method is characterized in that the preparation method comprises the following steps: preparing a comb-shaped associated copolymer PAH containing macromonomers and functional hydrophobic monomers into an aqueous solution having the concentration of 0.1 to 4g/L, the crosslinking agent concentration of 0.01 to 1.0g/L, the surfactant concentration of 0.01 to 8mmol/L and the sodium sulfite thermal stabilizer concentration of 0.005 to 1.0g/L; adding the aqueous solution into a mixing container with a stirring device; stirring the aqueous solution evenly at the room temperature; regulating the pH value of the solution to be equal to between 4 and 11, and obtaining a temperature resistant salt tolerant high efficiency gel polymer solution system used for tertiary oil recovery and scavenge, displacement modification, profile modification or water shutoff. The polymer solution system has micro-crosslinking to form the gel during the flowage inside the oil reservoir. The gel has good elasticity, not easy dehydration, stable gelling performance, and excellent tackification, temperature resistance, salt tolerance, shearing resistance and ageing resistance.

The invention relates the high entropy alloy binding agent and hard alloy sintered by multicarbide and preparing method, comprising the following steps: clinkering polyhydric high entropy alloy powder binding phase and multicarbide, the binding phase comprising 5-10 kinds metallic elements, every kind of whose content is between 5%-30%; the multicarbide hand base comprises 2-4 super hand carbides, every kind of whose content is between 5%-90%. The invention has the advantages of high hand, high tenacity and high fire-resisting property.

Provided herein are electrolytes for lithium-ion electrochemical cells, electrochemical cells employing the electrolytes, methods of making the electrochemical cells and methods of using the electrochemical cells over a wide temperature range. Included are electrolyte compositions comprising a lithium salt, a cyclic carbonate, a non-cyclic carbonate, and a linear ester and optionally comprising one or more additives.

The invention discloses acrylamide modified polymer micro-crosslinking gel and a preparation method thereof. The preparation method is characterized in that the method comprises the following steps that: acrylamide modified polymer PAE containing functional macro monomer is prepared into an aqueous solution with the concentration between 0.1 and 4g/L, the concentration of crosslinking agent between 0.01 and 1.0g/L, the concentration of surface active agent between 0.01 and 8mmol/L and the concentration of heat stabilizer sodium sulfite between 0.005 and 1.0g/L; the aqueous solution is added in a mixing container with a stirring device and is stirred evenly at room temperature; the pH value of the solution is adjusted between 4 and 11 to prepare a polymer solution system of the acrylamide modified polymer micro-crosslinking gel used for tertiary oil recovery and displacement, oil displacement modification, profile modification or water plugging; and the polymer solution system undergoes micro crosslinking during flowing inside an oil layer to form the gel. The acrylamide modified polymer micro-crosslinking gel has ideal elasticity, difficult dehydration, stable performance and excellent performances on tackifying, temperature resistance, salt resistance, shearing resistance and ageing resistance.

The invention provides association-type non-crosslinking fracturing fluid and a preparation method thereof. The association-type non-crosslinking fracturing fluid is prepared from hydrophobic modified partial hydrolytic polyacrylamide and derivatives of the hydrophobic modified partial hydrolytic polyacrylamide serving as active ingredients, a gel breaker, potassium chloride, an optional surface active agent and water, wherein each of the molecular structures of the hydrophobic modified partial hydrolytic polyacrylamide and the derivatives of the hydrophobic modified partial hydrolytic polyacrylamide contains acrylamide monomer unit, at least one biparental unsaturated monomer unit and at least one an anion alkene unsaturated monomer unit. As the molecular structure of a thickening agent contains a biparental monomer unit, a reversible super-molecule network can be formed in an aqueous solution through intermolecular hydrophobic association, and the high viscosity and the suspending power required by the fracturing fluid can be obtained without needing chemical crosslinking. The association-type non-crosslinking fracturing fluid based on the thickening agent has the characteristics of simple composition, low residue content, low damage, low friction, shear resistance, temperature resistance and salt resistance and can turn into a new generation of fracturing fluid system for replacing guanidine gum and fracturing fluid thereof.

The present invention provides the Nd-Fe-B gadolinium-containing rare earth permanent magnet materials and manufacturing methods. Nd-Fe-B described in the gadolinium-containing rare earth permanent magnet material for the composition: Re alpha Gd beta B gamma MxNyFe100 - alpha-beta - gamma - xy, including: Re for REE, including from Nd, Pr, Dy, Tb and in at least one Ce elemental or more elements; M to add elements, including Co and Cu; N to add elements, including from Al, Ga, Nb, Zr, Ti and Sn one or more elements; alpha, beta, gamma , x, y percentage of weight for each element content; Fe Fe and unavoidable impurities of which, 29 =< alpha =< 35,0.05 =< beta =< 0.50,0.95 =< gamma =< 1.20,0 =< x =< 10,0 =< y =< 1.50. Manufacturing methods described by melting, casting, grinding, molding and sintering of a continuous process manufacturing sintered magnets. The Nd-Fe-B Gd rare earth permanent magnet material added after its Hcj has improved, and to improve its temperature .

The invention relates to a compound of a thermoplastic synthetic material and a strengthening components whereby the technical problem of indicating a high-grade compound work material at low production cost, in particular for outdoor application has been solved in that the thermoplastic synthetic material is a synthetic polyester, preferably a polyethylene terephthalate (PET), and the strengthening components is an organic filler, preferably fine-particle wood or wood fibers. The invention also relates to the production of structural parts from the component as well as the structural parts themselves.

The rolled soft polyvinyl chloride film consists of basically polyvinyl chloride resin in 100 portions, heat stabilizer 2-4 portions, plasticizer 20-40 portions, lubricant agent 0.5-1.0 portions, andnanometer material 5-20 portions. Based on the requirement in service performance, the inorganic nanometer material and soft polyvinyl chloride are ground, high speed mixed, internally mixed, openlymixed and rolled, so that the nanometer material is dispersed in soft polyvinyl chloride substrate to obtain the inorganic nanometer material modified rolled soft polyvinyl chloride film, which has good plasticizer migration resistance, high strength and good temperature performance.

The invention discloses a water soluble copolymer with high viscosity and salt resistance, and a preparation method and an application thereof. The preparation method comprises the steps of: adding acrylamide 20 weight parts, an anionic monomer or/and a cationic monomer 0.1-15 weight parts,, a vinyl polycyclic aromatic hydrocarbon 0.05-4 weight parts,, a surfactant 0.5-90 weight parts,, and deionized water 70-900 weight parts, into a three-neck reaction bottle, adjusting the solution pH to 2.5-9, introducing N2 for 30min, adding an initiator persulfate 0.001-0.2 weight parts, at 20-70DEG C, and reacting for 6-36 hours to obtain a low-molecular weight water soluble copolymer with molecular association ability, high viscosity and salt resistance, which can be used in intermediate-permeability oil reservoir and low-permeability oil reservoir development. An associated water soluble polymer oil displacement agent is obtained by preparing the copolymer into an aqueous solution with copolymer concentration of 0.3-3 g/L and surfactant concentration of 0.01-4 mmol/L, adding into a mixer with a stirring device, and stirring uniformly at room temperature; and the obtained oil displacement agent has high viscosity, salt resistance, temperature resistance and shear resistance, and can be used in intermediate-permeability oil reservoir and the low-permeability oil reservoir development.

The invention belongs to the field of coatings, and particularly relates to a polyurethane/polyacrylate copolymer modified by organic fluoride and an ultraviolet curing coating prepared by the polyurethane/polyacrylate copolymer. A method for preparing the polyurethane/polyacrylate copolymer modified by organic fluoride comprises the following steps: 1), preparing a polyurethane prepolymer modified by organic fluoride; 2), preparing a (methyl) acrylate prepolymer; and 3), preparing the polyurethane/polyacrylate copolymer modified by organic fluoride. A method for preparing an ultraviolet curing agent by taking the polyurethane/polyacrylate copolymer modified by organic fluoride as a raw material comprises the steps that taking 100-107 parts of polyurethane/polyacrylate, 50-68 parts of an reactive diluent, 13-18 parts of a photoinitiator and 8-16 parts of an auxiliary; stirring fully for 5-15 minutes until all the materials are mixed uniformly; and obtaining the polyurethane/polyacrylate copolymer modified by organic fluoride and the ultraviolet curing coating prepared by the polyurethane/polyacrylate copolymer.

The invention discloses a brushing-proof abrasion-proof and erosion-proof ceramic paint, which is characterized by the following: selecting at least one of electric-melting brown corundum, electric-melting subwhite corundum, electric-melting white corundum, carborundum and electric melting mullite with different grain sizes as main material and at least one of compact corundum, electric-melting subwhite corundum, electric-melting white corundum, carborundum, silicon nitride and boron nitride as auxiliary material; using CA50 calcium aluminate cement or pure calcium aluminate cement as binder and nanometer micro-silica powder and active alpha-Al2O3 micropowder as reinforcer; making hyperdrying active high-effective dehydragent, sodium citrate and sodium hexametaphosphate as composite additive; loading in the strength stirrer to stir 12-17min; blending evenly; packing.

A modified alkali silicate composition for forming an inorganic network matrix. The modified alkali silicate matrix is made by reacting an alkali silicate (or its precursors such as an alkali hydroxide, a SiO₂ source and water), an acidic inorganic composition, such as a reactive glass, water and optional fillers, additives and processing aids. An inorganic matrix composite can be prepared by applying a slurry of the modified aqueous alkali silicate composition to a reinforcing medium and applying the temperature and pressure necessary to consolidate the desired form. The composite can be shaped by compression molding as well as other known fabrication methods. A notable aspect of the invention is that, although composite and neat resin components prepared from the invention can exhibit excellent dimensional stability to 1000° C. and higher, they can be prepared at the lower temperatures and pressures typical to organic polymer processing.

Process for production of acid and high temperature resistant cement composites, where the matrix is alkali activated F fly ash alone, F Fly ash combined with ground slag or ground slag alone. F-fly ash produces lower quality alkali activated cement systems. On the other hand the lack of calcium oxide results in very high resistance to medium and highly concentrated inorganic or organic acids. The high strength and low permeability of pure F-fly ash cement systems is achieved by using in the composition un-densified silica fume, the amorphous silicone dioxide obtained as by products in production of ferro-silicones. Precipitated nano-particle silica made from soluble silicates and nano-particle silica fume produced by burning silicon tetra chloride in the hydrogen stream.

The invention relates to an epoxy resin modified water-based polyurethane emulsion and a preparation method thereof. The emulsion comprises the following components in percentage by weight: 20 to 40 percent of isophorone diisocyanate, 20 to 40 percent of polyester, 5 to 10 percent of hydrophilic chain extender, 2 to 10 percent of chain extender, 1 to 3 percent of crosslinker, 3 to 10 percent of neutralizing agent, 2 to 10 percent of epoxy resin and 10 to 20 percent of acetone. The preparation method comprises the steps of feed preparation, polyester dehydration, the synthesis and neutralization of prepolymer, and chain extension and emulsification. Compared with the prior art, the epoxy resin modified water-based polyurethane emulsion has the advantages of high hardness of film, good water resistance and solvent resistance and the like, and is widely applied in the field of packaging coatings.

The present invention relates to one kind of super thin no-halogen less-smoke fireproof organic-inorganic composite paint and its preparation process. The composite paint is compounded with heat resistant organic and inorganic nanometer hybridized resin, organic resin, heat resistant pigment, heat resistant filler, carbon forming agent, foaming agent, catalyst, assistant, etc. In case of fire, the components of the paint synergy to swell, foam, isolate oxygen, delay heat transfer and inhibit fire spread. The fireproof paint may be used to form coating of controllable thickness in 0.2-2 mm, has fire resisting limit of 30-200 min, excellent heat resisting performance, excellent fire retarding performance, high fireproof performance, high anticorrosion performance and other advantages.

The invention discloses a slurry for high temperature anti-oxidation coating of Cf/SiC composite material and a preparation method thereof; the slurry is suspension liquid containing solid-phase components and organic carrier in a mass ratio of (1-4):1, the solid-phase components comprise BaO-Al2O3-SiO2 glass powder and oxide mixed powder in a mass ratio of (0-1):1 and the oxide mixed powder comprises Y2O3 powder and SiO2 powder in a molar ratio of 1:2. The invention also discloses a high temperature anti-oxidation coating of Cf/SiC composite material which is prepared from the slurry and a specific preparation method thereof. The coating is yttrium silicate composite coating or multilayer composite coating which is superimposed with various yttrium silicate composite coatings. The coating prepared by the method of the invention has low expansion coefficient and sufficient consistency, suitable high temperature viscous flow property and strong chemical bond with the protected composite material.

The invention provides a high temperature-resistant composite inorganic binder, as well as a preparation method and an application thereof. The binder is a waterborne binder containing aluminum dihydrogen phosphate, zirconium sol and water. The binder comprises the following components in percentage by weight: 10-70% of aluminum dihydrogen phosphate, 10-80% of zirconium sol and 0-80% of water. The preparation method comprises the following steps: weighing the aluminum dihydrogen phosphate, the zirconium sol and the water according to the proportion, uniformly mixing under the conditions that the temperature is 20 DEG C-100 DEG C and the stirring speed is 200rpm-1000rpm, cooling and then obtaining the required high temperature-resistant composite inorganic binder. The binder has excellent high temperature resistance and can withstand the temperature of 2000 DEG C for a long time. The high temperature-resistant composite inorganic binder can be used for high temperature-resistant materials, ceramic coatings, fireproof materials, ceramic materials, high-temperature kiln repair materials, refractory materials, flame-retardant materials, high temperature-resistant adhesives and the like.

The invention relates to a thermal-spalling acrylic ester pressure-sensitive adhesive, an adhesive tape and a preparation method of the adhesive. The thermal-spalling acrylic ester pressure-sensitive adhesive provided by the invention prepared by the following components by weight via radical polymerization: 60-140 parts of iso-octyl acrylate, 60-140 parts of butyl acrylate, 5-10 parts of acrylic acid, 5-10 parts of hydroxyethyl acrylate, 5-10 parts of methyl methacrylate, 0.1-2 parts of N-hydroxymethyl acrylamide, 0.02-1 part of azodiisobutyronitrile, and 140-250 parts of ethyl acetate. The pressure-sensitive adhesive prepared by the invention has good viscosity at low temperatures and does not have viscosity at high temperatures. Expansible microspheres and a cross-linking agent are added into the pressure-sensitive adhesive and then solidification is carried out to obtain the pressure-sensitive adhesive tape; when the temperature is below 60 DEG C, the pressure-sensitive adhesive tape has good viscosity; and when the temperature is above 120 DEG C and baking is carried out for 5min, the pressure-sensitive adhesive tape loses the viscosity. The viscosity variation of the pressure-sensitive adhesive tape is varied through temperature variation intervals by the pressure-sensitive adhesive, so that terrific adhesiveness and thermal-spalling property are provided.

The invention discloses a high-performance epoxy bitumen mixture easy to construct and maintain, comprising four components of A, B, C and D. The high-performance epoxy bitumen mixture easy to construct and maintain is characterized in that the component A mainly comprises epoxy resin, a toughening agent, an accelerating agent and a diluent agent; the component B mainly comprises a curing agent, an accelerating agent, a compatilizer and a diluent agent; the component C comprises bitumen; the component D comprises aggregates and mineral powder, wherein the ratio of the component A to the component B is 100:50 to 100:100; the ratio of the sum of the component A and the component B to the component C is 100:100 to 100:160; and the ratio of the sum of the component A, the component B and the component C to the component D is 6:94 to 7:93. The high-performance epoxy bitumen mixture easy to construct and maintain has the characteristics of excellent mechanical property, temperature resistance, water resistance, solvent corrosion resistance, fatigue durability, simple construction process and short maintenance time. The high-performance epoxy bitumen mixture easy to construct and maintain is suitable for paving and maintenance of road surfaces, such as steel bridge floors, cement concrete bridge floors, tunnels, expressways and the like. The invention also discloses a preparation method of the high-performance epoxy bitumen mixture easy to construct and maintain.