2383results about How to "Improve rheology" patented technology

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%.

The invention relates to a ceramic material for 3D light curing formation printing and a preparation method of a ceramic element. The ceramic material is prepared from 30 to 70 vol percent of ceramicpowder and 30 to 70 vol percent of photosensitive resin premixed liquid, wherein the photosensitive resin premixed liquid is prepared from 37 to 50 weight percent of oligomers, 30 to 60 weight percentof reactive diluents, 0.1 to 5 weight percent of photoinitiators, 1 to 5 weight percent of dispersing agents, 0.1 to 0.6 weight percent of ultraviolet blocking agents, 0 to 0.05 weight percent of polymerization inhibitors, 1 to 4 weight percent of anti-foaming agents, 0.5 to 2.35 weight percent of anti-settling agents and 0.3 to 3 weight percent of leveling agents. In the degreasing and sinteringpost-treatment work procedures, specific parameters are used, so that a sintering element can reach good sintering density and mechanical performance. By optimizing the composition and the proportionof light curing ceramic resin, and selecting the excellent dispersing agent combination and the reasonable consumption, the ceramic powder can be better dispersed in the resin; the problems that theexisting light curing ceramic resin has poor flowability and low formation precision, and that a finally prepared ceramic product can easily generate cracks or deformation, and the like are solved.

The invention discloses a method for preparing a high filling polyvinyl chloride or polyolefin composite material by employing industrial solid wastes and belongs to the field of chemical materials. According to the method, the industrial solid wastes and polyvinyl chloride or polyolefin serve as main raw materials, the industrial solid wastes are subjected to surface modification, the compatibility between the industrial solid wastes and the polyvinyl chloride or polyolefin is improved, the liquidity and processability of the composite material is improved by utilizing a compound plastifier, and the composite material is subjected to mixing and pelleting under the coaction of a proper amount of aids, so that the high filling polyvinyl chloride or polyolefin composite material is prepared. The method is simple in process, low in cost and high in additional value of products. The composite material has the characteristics of high filling amount of industrial solid wastes, enough strength and toughness, environment friendliness, stable performance and the like and can be widely applied to preparing green building materials and advanced engineering products in various fields of national economy.

The invention relates to silicon dioxide which bears partially or fully silylated polysilicic acid chains on its surface, wherein the sum of silanol groups of the silicon dioxide surface (SiOH) and grafted-on silylating agent radicals (SiRa) is greater than the number of silanol groups on the surface of untreated silicon dioxide, where a can be 1, 2 or 3 and R can be identical or different and are each a substituted or unsubstituted hydrocarbon radical.

A oil field production fluid, namely a drilling mud composition, comprising a mixture of: (a) at least one base oil component; and (b) an additive component comprising a blend of dibasic esters. The functional fluid can optionally comprise additional additive components. The blend of dibasic esters comprises two or more of dialkyl methylglutarate, dialkyl adipate, dialkyl ethylsuccinate, dialkyl succinate, dialkyl glutarate.

A self-healing cement system includes cement, water and at least one additive that swells in contact with water from reservoir or from formation in the case of a structural failure in the set cement to provide a physical barrier in the zone of failure. Examples of such material include particles of super-absorbent polymer. These additives have the effect of making the cement self-healing in the event of physical failure or damage such as micro-annuli. The self healing property is produced by the contact of the water itself, the potential repair mechanism is thus activated if and when needed in case of start of loss of zonal isolation. Several super-absorbent polymers have been identified such as polyacrylamide, modified crosslinked poly(meth)acrylate and non-solute acrylic polymers.

The invention relates to a waterborne heat-insulating flame-retardant multifunctional nano coating and a preparation method thereof. The coating consists of the following components in part by weight: 48 to 52 parts of waterborne resin and 30 to 50 parts of nano pigment fillers (nano titanium dioxide, nano titanium dioxide-coated hollow glass microspheres, nano titanium dioxide-coated hollow ceramic microspheres and nano antimony-doped tin dioxide (ATO) particles), size and auxiliary materials such as film-forming additive and coupling agent. The preparation method includes the steps that: the nano fillers and the size are first dipped into the waterborne resin, the auxiliary materials are then sequentially added and stirred, and thereby the heat-insulating flame-retardant multifunctional nano coating is obtained. The processing technique is simple, the component proportion is reasonable, and the prepared coating has the advantages of high heat resistance, high reflectivity, high radiative heat conductivity, certain fire resistance, high-efficient heat insulation, excellent mechanical and chemical properties, environment-friendliness, stain resistance, flame retardance and energy saving. The coating can be coated on outside facilities such as outer walls and building roofs.

The present invention relates to methods for producing nanoparticle and microparticle powders of a biologically active material which have improved powder handling properties making the powders suitable for commercial use using dry milling processes as well as compositions comprising such materials, medicaments produced using said biologically active materials in particulate form and / or compositions, and to methods of treatment of an animal, including man, using a therapeutically effective amount of said biologically active materials administered by way of said medicaments.

The invention belongs to the field of concrete structural materials, and discloses a preparation method for high-ductility low-shrinkage anti-cracking concrete for bridge deck pavement. The high-ductility low-shrinkage anti-cracking concrete for bridge deck pavement is characterized by comprising the following components in proportion: 135-155 kg / m<3> of water, a cementing material, 600-800 kg / m<3> of fine aggregate, 950-1150 kg / m<3> of coarse aggregate, 2.0-3.0 kg / m<3> of shrinkage-reducing ductility-increasing component,10-20 kg / m<3> of internal curing agent, 3.0-5.0 kg / m<3> of water reducing agent and hybrid fiber, wherein the cementing material comprises 320-380 kg / m<3> of cement and 20-40 kg / m<3> of coal ash in proportion; and the hybrid fiber comprises 0.8-1.0 kg / m<3> of organic polymer fiber and 40-50 kg / m<3> of steel fiber in proportion. According to the concrete and the preparation method for the concrete disclosed by the invention, reinforcement meshes on the bridge deck pavement layer can be cancelled.

The present invention discloses vegetable oil based compositions having an effective combination of properties including lubricity, rheology, electrical insulating value and microbial biodegradability making them particularly useful for the proper functioning of mechanical devices.

The present invention relates to inorganic-organic hybrids (IOHs), methods for their preparation and their use as fire resistant materials or components of fire resistant materials. More specifically, the invention relates to polyamide fire resistant formulations containing IOHs which have application in the production of fire resistant articles or parts thereof for use in the transportation, building, construction and electrical or optical industries.

Natural joint interfaces wear out and / or are damaged causing pain and disability. They can be currently replaced by artificial surfaces made of materials or in the near future by magnetic fields. They would benefit from a PVES (paramagnetic visco-viscoelastic supplement) that can replace or augment natural joint interfaces or augment total joint replacements. Joint replacement components can be modular and would benefit from a PVES to decrease wear and damp impact between modular parts of a single component. The PVES is a dynamic interface allowing components to be less rigid. Energy transmission is reduced. PVES can act as an interface between natural damaged joint surfaces obviating the need for classic total joint replacement or between the surfaces of artificial joint components to improve or supplement their function. These PVES can be controlled by magnetic fields with respect to their location, physical properties, loads, etc. PVES are typically made of paramagnetic ions and a substrate molecule. One such PVES can be made of gadolinium ions and hyaluronic acid to form gadolinium hyaluronate.

The invention discloses a method for using combustion and stream combination flooding to exploit thick oil. The method comprises the following steps of: carrying out vapor huff and puff exploitation in a heavy crude oil reservoir; carrying out in-situ combustion exploitation after forming thermal linkage; and changing single air charging to be simultaneous charging of air and water vapor in certain proportion to carry out combination flooding exploitation. A proper optimal configuration relationship of air / vapour charging speed is selected, so as to improve combustion wave and volume of the oil reservoir and improve exploitation effects of in-situ combustion and the ultimate recovery factor.

The invention belongs to the field of petrochemical drilling technology, and relates to polyamines drilling fluid used in the petroleum drilling process. The polyamines drilling fluid mainly contains 0.1-5% of shale inhibitor, 0.1-5% of fluid loss additive, 0.1-5% of coating agent, 0.1-5% of lubricating agent, 0-5% of thickening agent, 0-5% of plugging agent, 1-10% of slurry compounding soil, and pH regulator and weighting agent which are blended and added according to the need; and the polyamines drilling fluid also contains the balance of water used for preparing the drilling fluid. The polyamines drilling fluid has stronger capability of inhibiting hydrous expansion and hydrous disintegration of bentonite, has good rheological property and high-temperature resistance, and is applicable to oil reservoir and oil gas drilling engineering with high water sensitivity and higher clay content.

Gel-based lipstick compositions are disclosed comprising an ester terminated poly(ester-amide) (ETPEA) polymeric gellant, a first wax component having a melting point above the sol-gel transition temperature of the ETPEA gellant, a second wax compositions having a melting point equal to of below the sol-gel transition temperature of the ETPEA gellant, optionally a silicone T-resin co-gellent, and one or more oils capable of forming a gel with the ETPEA gellant. The gel compositions are solid or semi-solid at room temperature and are capable of being molded into self-supporting sticks. The disclosed gels provide high gloss films when applied to the lips and / or provide a rheology characterized by a high viscosity over repeated shear cycles.

The present invention discloses a nano silicon dioxide emulsion, its preparation method and application. Said emulsion contains nano silicon dioxide, silane coupling agent, surfactant and water. The described nano silicon dioxide and the described silane coupling agent are combined into a hydrophobic particle, and the described hydrophobic particles are covered with surfactant, and dispersed in the water. Its preparation method includes the following steps: adding water-soluble alcohol into the colloid solution of silicon dioxide in the water, then adding silane coupling agent and adding surfactant and water; another preparation method includes the following steps: adding water-soluble alcohol or aqueous solution of described alcohol into nano silicon dioxide gel, then adding silane coupling agent, surfactant and water. Said emulsion can be directly added into the water-based paint, and can be used for modifying water-based paint and improving various properties of the water-based paint.

The invention provides a preparation method of cubic ultra-fine calcium carbonate particles. The method comprises the following steps: (1) adding a nucleation promoter to calcium hydroxide suspension liquid, wherein the nucleation promoter is selected from more than one of glucose, sucrose or sodium citrate; (2) carbonizing by introducing carbon dioxide until the pH value is 8-12, adding a crystal modifier and ageing for 0.5-10 hours, wherein the crystal modifier is selected from one of sodium chloride, sodium carbonate, sodium bicarbonate or sodium hydroxide; (3) further introducing carbon dioxide and carbonizing until the pH value is 6.5-7.0; (4) coating by adding a coating agent, filtering and drying to obtain a product, wherein the coating agent is selected from a resin acid, a resin acid alkali metal salt, a fatty acid or a fatty acid alkali metal salt. According to the calcium carbonate particles, the particle sizes are 90-180nm, the calcium carbonate particles are in a cubic shape, and the specific surface area is 10-18m<2> / g. Thus, the cubic ultra-fine calcium carbonate particles can be used as functional fillers in coating, rubber, plastic and sealant industries.

The invention discloses a method for preparing a light general plastic composite material by adding bulk industrial solid wastes, and belongs to the field of preparation of chemical materials. The method comprise the following steps: with the bulk industrial solid wastes and general plastic as main raw materials, performing surface modification on the bulk industrial solid wastes to improve compatibility with the general plastic, improving the mobility and processing performance of the composite material by using a compound plasticizer, and under the combined action of an appropriate amount of a foaming agent and auxiliary agent, mixing, granulating and forming to prepare the light general plastic composite material added with the bulk industrial solid wastes. The method is simple and convenient in process and low in cost; the light general plastic composite material is light in weight, high in strength and high in added value; the light general plastic composite material prepared by the method has the characteristics of high filling amount of the industrial solid wastes, low density, good mechanical properties, strong impact resistance and the like, has excellent buffering and damping, sound-insulating and heat-insulating, insulating, corrosion-resistant and mold-resistant performances and the like; light environmentally friendly building materials and engineering products made of the light general plastic composite material can be widely applied to construction, chemical industry, metallurgy, transportation and other fields.

The invention belongs to the field of halogen-free flame-retardant ethylene / vinyl acetate copolymers, relates to a composition of the halogen-free flame-retardant ethylene / vinyl acetate copolymer of a phosphorus-containing heterocyclic compound, and in particular relates to a composition of the halogen-free flame-retardant ethylene / vinyl acetate copolymer, and the composition is prevented from being flamed under the synergistic action of a metal hydroxide and an organophosphorus heterocyclic compound. The composition contains the following components by weight percent: 30% to 50% of the ethylene / vinyl acetate copolymer, 40% to 60% of the metal hydroxide and 0.1% to 10% of the organophosphorus heterocyclic compound. The composition is prepared conveniently, which is beneficial to the industrial production. The composition has the excellent flame-retardant property and also has the mechanical property and heat stability of materials. In addition, the composition is good in rheological property and can be processed simply. As a result, the composition provided by the invention can be applied to the fields of electric wires and cables, and the like.

The invention provides a comb-like polymer fluid loss additive for drilling fluid and a preparation method thereof. The preparation method comprises the following steps of: performing esterification on polyethylene glycol monomethyl ether (PEGM) and maleic acid (MA) to obtain macromonomers; and adding two monomers, namely acrylamide (AM) and 2-acrylamido-2-methylpropanesulfonic acid (AMPS) into the macromonomers to perform copolymerization so as to obtain the comb-like polymer fluid loss additive with a long side chain by a solution polymerization method. The prepared comb-like polymer fluid loss additive has the advantages of resisting the temperature of 200 DEG C in the drilling fluid, along with good fluid loss reducing effect on the drilling fluid such as fresh water, saline and the like, capacity of controlling the drilling liquid to keep high rheological property under the condition of high temperature and high salinity, high temperature and salt resistance, stable fluid rheological property, mild synthesis condition, low equipment requirement and simple process.

The invention discloses an injectable composite material capable of promoting bone regeneration and repair. The injectable composite material is prepared by mixing sodium alginate, chitosan, multiple trace element, calcium phosphate porous microsphere and bioactive glass nanometer granules, preparing the mixture by using deionized water and cell culture fluid, and compounding the prepared mixture. The injectable composite material comprises the following components in percentage by mass: 0.10 to 0.50 percent of sodium alginate, 0.01 to 0.20 percent of chitosan, 5 to 30 percent of multiple trace element codoped calcium phosphate porous microsphere, 0.05 to 0.50 percent of bioactive glass, 25 to 55 percent of cell culture fluid and 30 to 45 percent of deionized water. The preparation process is simple; the prepared injectable composite material has the characteristics of excellent injectability and quick degradation; and a hydrogel network can concentrate calcium, phosphorous ion and trace elements degraded and released by inorganic particles and can promote the migration, growth, multiplication and differentiation of bone cell, thereby having effects of quickly inducing bone regeneration and promoting bone repair on endosteal microdamage, fracture or bone defect.

The invention discloses a novel aluminum-based anti-collapse agent and provides a strong-inhibition and strong-blockage aluminum-based anti-collapse water-based drilling fluid system by combining the performance requirement of drilling fluid based on the novel aluminum-based anti-collapse agent. The strong-inhibition and strong-blockage aluminum-based anti-collapse water-based drilling fluid contains the following substances in parts by weight: 100 parts of fresh water, 4 parts of sodium bentonite, 0.1-1 part of a coating inhibitor, 0.3-5 parts of a strong amine inhibitor, 0.5-5 parts of a filtrate reducer, 0.3-1 part of a thickening agent, 1-5 parts of a lubricating agent and 0.5-5 parts of an efficient aluminum-based blocking agent. The key technique of the invention is to provide use of the aluminum-based anti-collapse agent as a mud rock blocking anti-collapse agent in drilling fluid. After an aluminum-based blockage anti-collapse agent acts with a rock core with same thickness, the time required for transferring differential pressure of 1MPa is substantially shortened in comparison with the time (about 1.5 hours) required for transferring differential pressure in a blank rock core, so that the aluminum-based blockage anti-collapse agent has excellent blockage performance. Compared with the prior art, the strong-inhibition and strong-blockage aluminum-based anti-collapse water-based drilling fluid has the following advantages that (1) an amine inhibitor has prominent inhibition performance, and the hydration dispersion inhibition capacity of shale of the drilling fluid system is strong; (2) the anti-collapse agent has prominent inhibition performance and strong blockage anti-collapse capacity, and the hydration expansion inhibition capacity of shale of the drilling fluid system is strong; (3) the water-based drilling fluid system has relatively good rheological property and strong temperature resistance, salt resistance and calcium and inferior soil pollution resistance; and (4) the system contains less treating agents and is simple to prepare and convenient to maintain.

The invention relates to a retarder for cement paste used in petroleum drilling, completion or well cementing operation, which comprises two components. The two components are a multipolymer containing carboxylic acid groups accounting for 60 to 90 portions by weight and an organic phosphonic acid and salts thereof accounting for 10 to 40 portions by weight. The average relative molecular mass of the multipolymer containing carboxylic acid groups is 2,000 to 20,000. The applicable temperature scope of the cement retarder is wide, and the cement retarder can be applied at high temperature, medium and low temperatures. The applicable temperature scope ranges from 30 DEG C to 230 DEG C. The cement retarder can be matched with various additives and is very compatible, which is applicable for oil well cement of various grades. The retarder can resist salt well, which is applicable for fresh water, brine, seawater, concentrated water and so on. The retarder can be widely applied in various shallow holes, moderate-depth holes, deep holes and superdeep holes. An excess amount of retarder is not sensitive in brine and seawater; the construction safety is ensured; the retarder does not adversely affect the strength development of cement.

The invention relates to a waterborne super thin steel structure fireproof coating and a preparation method Which is evidently different from the solvent-typed expansion foam fireproof coating, the invention solves the problems of environmental pollution, resource waste and high cost in prior solvent-typed super thin steel structure fireproof coating. The invention takes water as solvent and comprises the components with certain weight portions: water of 5-25 weight portions, waterborne resin or mixed waterborne resin of 10-30 weight portions, waterborne expansion additive of 25-50 weight portions, pentaerythritol or dipentaerythritol or starch of 5-15 weight portions, one or two components among urea, melamine and dicyano diammonium with 6-15 weight portions, ammonium dihydrogen phosphate, ammonium polyphoste or diammonium phosphate of 15-30 weight portions, expansion regulator of 3-18 weight portions, titanium dioxide of 3-12 weight portions, dispersion agent of 0.1-1.0 weight portions.

The invention provides a method for preparing formaldehyde-free ethylene vinyl acetate emulsion. The ethylene vinyl acetate emulsion is obtained by copolymerization reaction of ethylene and / or polyvinyl alcohol with monomers such as vinyl acetate and the like in the existence of emulsifier and under the action of redox initiator, wherein pyrosulfite and / or sulfite serve as reducing agent, and organic hydrogen peroxide serves as oxidant. Ethylene vinyl acetate emulsion which completely contains no formaldehyde can be obtained by the method, the problems of yellowing, discoloring and the like can be avoided, and the formaldehyde-free ethylene vinyl acetate emulsion is uniform and stable in quality, wide in viscosity adjustable range, quick in curing, high in primary viscous force and wide in application range.

The preparation method of dispersing agent for water-coal slurry by using lignin sulfonate-by-product obtained by pulping for making paper includes the following steps: chemical modification, adding alkali in lignin sulfonate solution at 50-85 deg.c to regulate pH value of 8-11.5, adding catalyst, oxidant, anchor group and solvation chain and making them produce reaction for 1-10 hr., and compounding modification, adding modifying agent, stirring for 10-60 min. and cooling so as to obtain liquid product of the dispersing agent. Said invention can modify the lignin sulfonate into the additive with double action of dispersion and stabilization for water-coal slurry.

The invention relates to a nano-material mixed modified superhigh-temperature high-performance well cementing slurry system and a preparation method thereof. The slurry system comprises the followingingredients in parts by weight: 100 parts of oil well cement, 15-25 parts of coarse silica sand, 15-20 parts of fine silica sand, 1-10 parts of nano-silicon dioxide, 1-10 parts of nano-calcium carbonate, 0.2-1 part of a defoaming agent, 4-10 parts of a fluid loss agent, 0-3 parts of a drag reduction agent, 0.5-4 parts of a retarder and 30-100 parts of water. In the slurry system, set cement has excellent compressive strength and toughness under superhigh temperature, and the compressive strength and the elasticity modulus cannot be obviously changed as the maintenance time is prolonged. The slurry system has good rheological property, lower water loss and proper thickening time, and the comprehensive properties of the slurry system can completely meet the related requirements of site wellcementing construction, so that the technical support is provided for well cementing under high temperature. A nano-material obtained by mixing the nano-silicon dioxide and the nano-calcium carbonateis added, and micropores of the set cement can be effectively filled, so that the system becomes denser. Therefore, the volume shrinkage of the set cement is relieved.

The invention provides water-based drilling fluid for stabilizing shale. The drilling fluid is formed by mixing sodium-based bentonite, a shale inhibitor, a tackifier, a flow-pattern adjusting agent, a filtrate reducer, a high-temperature-resisting processing agent, a bridging agent, bridging particle and an anti-collapse agent. Calculated by the addition quantity in every 100 parts of water, the water-based drilling fluid comprises the following components in parts by mass: 5 parts of sodium-based bentonite, 1.5 to 1.8 parts of shale inhibitor, 0.5 to 0.7 part of tackifier, 0.1 to 0.2 part of flow-pattern adjusting agent, 0.7 to 0.9 part of filtrate reducer, 2.3 to 2.5 parts of high-temperature-resisting processing agent, 9.33 to 10.67 parts of bridging agent, 1.8 to 2.2 parts of bridging particle and 1.1 to 1.3 parts of anti-collapse agent. The drilling fluid is good in rheological property, filtrate reduction property and lubricating property and strong in inhabitation property, so that the requirement of the shale gas horizontal well drilling cuttings carrying and wall stability requirement can be met, and the probability of drilling seizure can be reduced.

The invention relates to a high flame-retardant and high heat-resisting halogen-free expansion type fire-resistant cable material and a preparation method thereof. In order to solve the problem that the cable material is separated out when encountering water during processing and improve the mechanical property, the cable material adopts a polyolefin material as a matrix and also adopts an expansion-type flame retardant. The cable material comprises the following components in part by weight: 100 parts of matrix resin, 60 to 80 parts of flame retardant, 2 parts of lubricant and 1 part of antioxidant, wherein the matrix resin comprises SEBS, ethylene-vinyl acetate copolymer, ethylene-propylene-butylene terpolymer, polypropylene, high-density polyethylene and ethylene-octylene copolymer; and the flame retardant comprises ammonium polyphosphate II type, pentaerythritol and melamine. The preparation method comprises the following steps of: uniformly mixing the components on a double-roll open mill at the roll temperature of 190+ / -5DEG C for 30+ / -5minutes; and then tabletting, cold-pressing and demoulding on a flat vulcanizing press at the temperature of 190+ / -5DEG C. The cable material has the advantages of high flame retardant property, tensile strength reaching to 12 to 16MPa and the ratio of breaking elongation reaching to 400 to 500 percent; and at the same time, the problem that the material is separated out when encountering the water is improved.