196results about How to "Low initial viscosity" patented technology

The present invention involves reduced specific gravity particulates and their use in subterranean applications such as production enhancement and completion. One embodiment of the present invention provides particulates comprising silica and an aluminum oxide and at least one void and having a specific gravity of less than about 2.2, a particle size of 8 U.S. Mesh or smaller, and a substantially spherical shape. Other embodiments of the present invention provide for using such particulates in subterranean operations such as fracturing and gravel packing.

The present invention is composite polyacrylate emulsion for pressure sensitive adhesive and its preparation process and application, and relates to polyacrylate based adhesive. The composite emulsion is one core-shell structure with silane cross-linking agent surface modified nanometer silica as the core and the copolymer of acrylate and acrylic acid as the shell, and has solid content of 30-40 %, viscosity of 1-6 mPa.s, composite emulsion particle size of 250-700 nm and particle size dispersing index of 0.005-0.15. The composite polyacrylate emulsion is prepared through preparing nanometer silica alcohol sol, surface modification of nanometer silica and preparing nanometer silica-polyacrylate composite emulsion. The composite polyacrylate emulsion coating is dried to obtain the pressure sensitive adhesive with high initial adhering performance and cohesive property.

The present invention relates to organic/inorganic dielectric material and its preparation technology, and aims at one kind of high dielectric constant composite polyimide/ceramic film and its preparation process. The high dielectric constant composite polyimide/ceramic film has powdered ceramic dispersed homogeneously in polyimide matrix. The present invention also provides the preparation process of the composite film. The composite film of the present invention has high resistivity and low conductivity, and is suitable for use in capacitor and great power and great heat electronic and electric devices.

The present invention relates to an epoxy/polyurethane interpenetrating polymer network underwtaer repairing material. Its composition includes (by weight portions) acrylic epoxy resin 90-110 portions, polyurethane prepolymer 15-30 portions, diluting agent 30-60 prtions, initiator 0.5-1.0 portions of accelerator 0.1-0.2 portions. Besides, said invention also provides its excellent properties and extensive application range.

An epoxy resin encapsulation material composition, the composition contains epoxy resin, a curing agent and inorganic filler particles containing a coupling agent, wherein the particle diameter of the inorganic filler particles containing a coupling agent is 0.1-200 microns , wherein the inorganic filler particles containing a coupling agent whose particle diameter is not more than 3 microns account for 5-20% by volume of the total amount of the inorganic filler particles containing a coupling agent. The epoxy resin encapsulating material composition provided by the present invention can greatly increase the filling ratio of the inorganic filler, thus making the epoxy resin encapsulating material composition provided by the present invention have low initial viscosity, excellent fluidity, and linear expansion coefficient Low, the production cost of obtaining epoxy resin encapsulation materials with the same initial viscosity is greatly reduced. In addition, the composition provided by the invention has excellent dielectric properties and is suitable for the packaging of various electronic components sensitive to stress, especially for automatic packaging of electronic components requiring high precision.

The invention discloses a latent curing agent type single-component polyurethane waterproof coating. The latent curing agent type single-component polyurethane waterproof coating is prepared by a method comprising the following steps: 1) mixing polyether polyol, chlorinated paraffin and a filler, and dehydrating the mixture at 100-140 DEG C; 2) cooling to 55-75 DEG C, adding polyisocyanate into the mixture, raising the temperature to 80-95 DEG C, and reacting; 3) cooling to 55-75 DEG C, and reacting; 4) heating to 80-95 DEG C, and reacting; 5) cooling to 40-70 DEG C, adding a catalyst, and reacting; and 6) adding a latent curing agent, a diluent and a defoaming agent, reacting, cooling or keeping the temperature to 40-60 DEG C to obtain the latent curing agent type single-component polyurethane waterproof coating. The single-component polyurethane waterproof coating disclosed by the invention is relatively low in initial viscosity, the viscosity of the single-component polyurethane waterproof coating is increased slowly after being stored, the film surface is free of pinhole and bubble problems, and the adhesive strength of the single-component polyurethane waterproof coating and concrete or a cement base is high.

A process is provided to partially upgrade heavy oil using two or more reaction zones connected in series, each reaction zone being a continuous stirred tank maintained at hydrocracking conditions. The heavy oil feedstock and a solid particulate catalyst are stirred to form pumpable slurry which is heated to a target hydrocracking temperature and then continuously fed to the first reaction zone. Hydrogen is continuously introduced to the reaction zone to achieve hydrocracking and to produce a volatile vapour stream carried upwardly by the hydrogen to produce an overhead vapour stream. The hydrocracked heavy oil slurry from one reaction zone is fed to a next reaction zone also maintained under hydrocracking conditions with a continuous hydrogen feed to produce a volatile vapour stream. The overhead vapour stream from each reactor zone is continuously removed, and the hydrocracked heavy oil slurry from the last of the reaction zones is removed.

The invention discloses a dissoluble polymeric microsphere deep profile modifying and flooding agent and a preparation method thereof. The deep profile modifying and flooding agent is copolymerized by an acrylamide monomer, a temperature-resistant and salt-resistant monomer and a dissoluble crosslinking monomer, wherein the preparation method is a reversed phase suspension polymerization method. The dissoluble crosslinking monomer is a polyethylene glycol diacrylate monomer, has temperature dependency and is adaptive to different oil reservoir temperatures by adjusting the dosage and controlling the decomposition temperature and time. The dissoluble polymeric microsphere deep profile modifying and flooding agent has a micrometer size, is matched with the oil reservoir pore throat size, low in initial viscosity, easy to enter into the oil reservoir deep part, initially expanded with water immersion, similar to a deep profile control agent, and is capable of blocking a high permeable layer to promote the fluid diversion. Under the oil reservoir temperature, the deep profile modifying and flooding agent is gradually decomposed into a linear polymer, so that the water phase is tackified and the late polymer deep oil displacement is realized. A system is injected, a double function of the deep profile modifying and the deep oil displacement can be realized and a potential application value is obtained.

The invention discloses a low-hardness and high-elasticity water treatment membrane component epoxy pouring sealant preparation method and application. An epoxy pouring sealant comprises a component Aand a component B, the component A comprises, by weight, 30-70 parts of epoxy resin, 5-20 parts of activated thinners, 10-20 parts of toughening agents, 5-30 parts of fillers and 0.1-3 parts of coupling agents, the component B comprises, by weight, 20-50 parts of polyether amine, 40-70 parts of alicyclic amine and 2-15 parts of curing accelerators, and the weight ration of the component A to thecomponent B is (100:10)-(100:50). By the aid of a 'trinity' toughening modified mode of the flexible toughening agents, the activated toughening thinners and flexible curing agents, the epoxy pouringsealant is characterized of low hardness, high elasticity and stable hardness within wide temperature range, the epoxy pouring sealant has excellent adhesive performance and is low in initial viscosity, high in mold filling speed, simple and convenient to operate and applicable to the fields such as package of water treatment membrane components and flexible package of electronic devices, and theblocking efficiency of the membrane components can be greatly improved.

The invention relates to a special concrete pumping agent for ultra-high buildings. The special concrete pumping agent is prepared from raw materials of polyether monomers containing double bonds, unsaturated carboxylic acid and derivative monomers thereof, unsaturated carboxylic acid ester and derivative monomers thereof, a bleeding-improved assistant, a chain transfer agent and an initiator, wherein water reducing agents are composed of polyether monomers containing double bonds, unsaturated carboxylic acid and derivative monomers thereof, unsaturated carboxylic acid ester and derivative monomers thereof and bleeding improved assistants; the adding amount of the initiators and the adding amount of the chain transfer agents are 0.2-0.5% and 0.05-0.2% of the total weight of water reducing agents respectively. The special concrete pumping agent does not need to be compounded with other additives, is simple in ingredients, has effects of water reducing and slump conserving on concrete, reduces initial viscosity of concrete, avoids the bleeding phenomenon in ultra-high concrete pumping, and is suitable for smooth pumping of concrete to ultra-high buildings over 100 meters.

The invention discloses a water dispersible profile control agent for oil extraction and a preparation method thereof. The water dispersible profile control agent comprises the following components in parts by weight: 70-150 parts of acrylamide, 5-10 parts of anionic monomer, 5-10 parts of cationic monomer, 1-5 parts of hydrophobic monomer, 15-55 parts of dispersant, 30-85 parts of inorganic salt and 230-500 parts of deionized water. By virtue of water in water dispersion polymerization, the product is instant, so that the liquid preparation time and the curing time of a conventional polyacrylamide solution are shortened. A cationic chain link is introduced based on a conventional gel, so that gel molecules and rocks with negative electricity firmly adsorb so as to increase the flow resistance of water and improve the scouring resistance of the gel. The water dispersible profile control agent is low in initial viscosity, good in pumping property, simple in construction process and small in environmental damage. The water dispersible profile control agent is good in biological stability, and the profile control period of validity is over half a year. The product is obtained by virtue of water in water dispersion polymerization and is instant in the using process.

The present invention relates to elastic high-strength epoxy grouting material and its preparation. The elastic high-strength epoxy grouting material features its material composition comprising epoxy resin in 100 weight portions, long chain active diluent in 50-150 weight portions, curing agent in 10-100 weight portions and silane coupler 0.5-10 weight portions. The epoxy resin contains flexible epoxy resin in 20-60 weight portions. The present invention has the features of good grouting performance, high elasticity and no toxicity.

The invention discloses a solvent-free composite binding agent for a solar back board and a preparation method thereof. The composite binding agent consists of an ingredient A and an ingredient B; the functional group mole ratio OH/NCO of the ingredient A to the ingredient B is (1.0-1.2):1.0; meanwhile, the preparation method of the composite binding agent is used. The preparation method comprises the following steps of (a) ingredient A preparation; (b) preparation of polyether with the terminal group being -NCO in the ingredient B; (c) ingredient B preparation; (d) binding agent preparation. The prepared composite binding agent has the characteristics that no solvent is used; no pollution exists; the operation safety is high. Through the recipe design of the binding agent, the initial viscosity of the binding agent is reduced; convenience is brought for construction; the initial peeling strength between the binding agent and a substrate is enhanced; the peeling strength between initial layers of the solar back board can reach 4.0N/cm.

The specification discloses a bimetallic composite plate material and a manufacturing process thereof; the bimetallic composite plate material comprises a surface layer metal and a bottom layer metal; a polyurethane adhesive layer is disposed between the surface layer metal and the bottom layer metal. The manufacturing process of the bimetallic composite plate material comprises the following steps: a. uniformly coating a polyurethane adhesive between the surface layer metal and the bottom layer metal; b. superposing the surface layer metal and the bottom layer metal; c. coating a protection film on the surface layer metal; d. performing normal temperature rolling compounding or heating rolling compounding of the surface layer metal and the bottom layer metal; e. shearing the plate; f. curing at a medium or low temperature.

The invention provides a low-carbon, environment-friendly and energy-saving high-level ecotype door and a manufacture method of the ecotype door. According to the ecotype door on the market currently, a base material is generally made from the China fir and the African soft and impure pine batten, a low-level agglutinate plywood is taken as an edge frame, and the corner crushed aggregates and the honeycomb paper are taken as filler. The manufacture method of the low-carbon, environment-friendly and energy-saving high-level ecotype door comprises the following five steps of 1, symmetrically arranging single boards by a transverse-lengthways-transverse structure to form a multi-layer board; 2, overlapping two door boards with the thickness of 15-25cm into a standard door board; 3, pressing melamine impregnating resin-impregnated surface-layer decorative paper and shortened density board; 4, thermally pressing the milled door surface board and the door board into the ecotype door; and 5, printing wood grain on the side edge of the door in a transferring way, and carrying put spray coating. The method is used for manufacturing the low-carbon, environment-friendly and energy-saving high-level ecotype door.

The present invention discloses cleaning compositions comprising a combination of surfactants and viscosity modifying agent including electrolyte, that upon dilution thickens so as to form a gel. The compositions are useful for household cleaning activities such as dishwashing. They provide enhanced and progressive retention of surfactant in carriers, thus avoid excessive product consumption and providing more yield.

The invention belongs to the technical field of silica preparation, and particularly relates to precipitated silica for low-viscosity toothpaste and a preparation method of the precipitated silica. The preparation method comprises the following steps: S1, adding a sodium sulfate solution to a reaction kettle, conducting stirring and heating, and then adding a sodium silicate solution to adjust thepH value; S2, simultaneously adding a sodium silicate solution and a sulfuric acid solution for reaction, and controlling the pH value of the reaction process to be 9-10, and after the sodium silicate solution is completely added, continuing adding the sulfuric acid solution until an end point pH value, and conducting stirring to obtain a preliminary product of silica; and S3, subjecting the preliminary product of silica to pressure filtration and washing by dilute sulfuric acid, and then conducting drying, and finally conducting crushing, so as to prepare the silica. The silica of the present invention can reduce the initial viscosity of the toothpaste and inhibit the viscosity of the toothpaste from growing, enables the toothpaste to maintain a proper viscosity, a good pseudoplasticityand thixotropy, and has a good application effect.

The invention discloses a polyurethane structural adhesive having long working life and increasing rapidly in strength. The polyurethane structural adhesive is prepared from a component A and a component B, wherein the component A and the component B are mixed according to a mass ratio of 5 to 1, the component A is prepared from the following components by mass percent: 5%-40% of castor oil polyalcohol, 5%-45% of bisphenol A modified polyether triols, 5%-15% of environment-friendly organic solvent, 5%-28% of polyether hexahydric alcohol, 20%-75% of inorganic filler, 0.3%-3.5% of tackifier additive, 0.3%-3.5% of viscosity reducer, 0.3%-3.5% of retarder, 2%-8% of molecular sieve dehydrator, and 0.05%-1% of delaying catalyst, and the component B is an isocyanate curing agent being prepared from liquefied diphenylmethane diisocyanate and polyphenylpolymethylene polyisocyanate. The invention further discloses a preparation method of the polyurethane structural adhesive. The polyurethane structural adhesive has the advantage of the bi-component acrylic ester adhesive, and has the advantages of having no pungent odor, having long working life and increasing rapidly in strength at the sametime.

The invention belongs to the field of adhesives and discloses high-permeability water-borne epoxy slurry as well as a preparation method and an application thereof. The slurry is prepared from a component A and a component B, wherein the component A comprises 15wt%-40wt% of liquid epoxy resin, 60wt%-85wt% of an activated diluent and 0-1wt% of a silane coupling agent; the component B comprises 40wt%-80wt% of a waterborne amide Schiff base compound curing agent and 20wt%-60wt% of a phenolic amine compound. During use, the component A and the component B are uniformly mixed in the mass ratio being 100:(10-30), and the high-permeability water-borne epoxy slurry is obtained. The slurry has excellent mechanical property on a wet or dry basal plane and has broad application prospects in the engineering fields of hole sealing treatment of porous materials such as porous ceramic or porous resin molds and the like, interfacial adhesion treatment agents, chemical grouting for waterproof and leakage-proof reinforcement or the like.

The invention belongs to the field of oilfield development technologies, and in particular relates to an oil-in-water emulsion for horizontal well water plugging and a preparation method of the oil-in-water emulsion. The emulsion is prepared from the following preparation materials in parts by weight: 30-40 parts of thickened oil, 60-70 parts of deionized water, 0.1-0.2 part of a water-soluble surfactant, 0.2-0.3 part of an oil-soluble surfactant and 0.1-0.2 part of a stabilizer. The emulsion disclosed by the invention has the advantages of simple preparation process, low cost, low initial viscosity and simplicity in injection; the coated high-viscosity thickened oil phase is released after demulsification or phase inversion, or a viscous oil-in-water phase is further formed, so that the water outlet is subjected to safety plugging; the plugging agent is high in selectivity, is inversed with highly mineralized water to become viscous for plugging, and is invariable when meeting oil. The product disclosed by the invention has the initial viscosity of being lower than 10 mPa.s, the plugging rate is 85% or higher, and the water plugging effect is good.

The invention discloses a high weather-resistance PE film for a solar battery backboard. The high weather-resistance PE film is prepared from inner, middle and outer layers through melting co-extrusion blowing. The inner layer has thickness 20-40% that of the composite film and is prepared from 100 parts by weight of linear low density polyethylene, 5 to 20 parts by weight of ethylene-vinyl acetate copolymer resin, 6 to 15 parts by weight of white master batch and 4 to 10 parts by weight of anti-UV anti-aging master batch. The middle layer has thickness 20-40% that of the composite film and isprepared from 100 parts by weight of linear low density polyethylene, 6 to 15 parts by weight of white master batch and 4 to 10 parts by weight of anti-UV anti-aging master batch. The outer layer hasthickness 20-40% that of the composite film and is prepared from 100 parts by weight of linear low density polyethylene, 3 to 15 parts by weight of ethylene-vinyl acetate copolymer resin, 6 to 15 parts by weight of white master batch and 4 to 10 parts by weight of anti-UV anti-aging master batch. The PE film has high weather resistance and excellent dimensional stability, can meet the requirements on the durability and stability of solar battery backboards and can prolong the service life of the solar battery.

The present invention provides a gel injection type profile control agent, which comprises: acrylamide, an initiator, a cross-linking agent, a retarder and a buffer agent, wherein the acrylamide concentration is 3.5-5 g/L, the initiator concentration is 0.008-0.02 g/L, the cross-linking agent concentration is 0.015-0.03 g/L, the retarder concentration is 0-40 mg/L, and the buffer agent concentration is 0-0.6 g/L. The gel injection type profile control agent has the ultra low initial viscosity, and can form the continuous gel with the adjustable cross-linking viscosity in the target stratum according to the design scheme under different stratum permeabilities, different stratum temperatures, different mineralization degrees, and different well completion manners, such that purposes of sweeping volume expansion and recovery efficiency increase can be achieved through adjusting the water absorption profile of the water well.