494results about How to "Low solid content" patented technology

The invention relates to a dilutable, non-aqueous concentrate and an aqueous dilution used for aqueous delivery of fluorinated oligomeric silanes to a substrate, a method of treating a substrate with the aqueous dilution composition to render it oil and water repellent, and articles having coatings made from the aqueous dilution.

The invention relates to a water-based drilling fluid with high suppression and lubrication performance and a preparation method thereof. The water-based drilling fluid mainly comprises 100 parts of fresh or sea water, 2 to 10 parts of inorganic salt, 0.2 to 5 parts of amine strong suppressant which is a product of reaction of a naphthenic amine compound and a bronsted acid, 0.1 to 1 part of coating inhibitor, 0.1 to 1 part of tackifier, 0.1 to 1.5 parts of filtrate reducer, 0.5 to 5 parts of anti-mud-coating lubricating agent, 1 to 10 parts of temporary plugging agent and a proper amount of weighting agent (added according to requirements). The drilling fluid provided by the invention has high suppression performance and lubrication performance, can effectively protect an oil gas layer and is a novel drilling fluid system which can replace oil-based drilling fluid.

The invention discloses a low-temperature radiation electrothermal film and a preparation method thereof. The carbon nanometer conductive ink comprises the following components in mass percent: 1 to 5% of carbon nano tube, 94 to 98% of solvent, and 0.2 to 2% of surface active agent. The preparation method comprises the following steps: manufacturing a hot melt adhesive layer on a polyester film; printing a carbon nanometer conductive ink layer onto the hot melt adhesive layer; printing a generating and heating ink layer on the ink layer; manufacturing an electrode; and then hot-processing and compounding the polyester film through a hot melt adhesive film. The low-temperature electric radiant heater film has the characteristics that the peeling strength is high and the electro thermal power can be flexibly adjusted.

Coal fines are processed by flotation separation to separate coal particles from ash-forming component particles. Coal fines are mixed water under high shear mixing conditions to form an aqueous slurry of coal fines containing between 15 wt. % and 55 wt. % coal fines. The aqueous slurry is introduced into a coal flotation cell to separate coal particles from ash-forming component particles by flotation separation, wherein the coal fines have a particle size less than 500 μm, and more preferably less than 300 μm. Bubbles are generated in the coal flotation cell having a bubble size and bubble quantity selected to float the coal particles and to form a coal-froth containing at least 15 wt. % solid particles. The solid particles include coal particles and ash-forming component particles. The coal-froth is collected for further processing.

A process and apparatus for coal pyrolysis pretreatment. The apparatus is made up of a pretreatment vessel for holding a bed of coal particles, a preheater for heating the bed of coal particles to a temperature below the coal pyrolysis temperature range and an oxygen remover for removing oxygen released from the heated coal particles. The apparatus can also have a flue gas source as an oxygen removal sweep gas to the bed of coal, a collector for collecting non-condensable combustible gases, and the preheater having a furnace holding ceramic balls which are circulated from the furnace to the bed of coal particles. The process involves heating the bed of coal particles to a temperature below the coal pyrolysis temperature range and preventing air from contacting the bed of coal particles in addition to collecting non-condensable combustible gases or the preheating step accomplished by having a furnace holding ceramic balls which are circulated from the furnace to the bed of coal particles.

The composition of a organic (e.g. conducting polymer) solution is reformulated and the device upon which the organic solution is to be deposited is plasma treated to provide a more uniform and flat drying profile for the resulting dried film. This reformulation and treatment induces a more uniform and flatter profile when the reformulated organic solution is allowed to dry into a film on the treated device.

The invention discloses a lead-free graphene/nano-silver composite electronic silver paste, which is composed of: 55-85% of graphene/nano-silver composite powder; 5-40% of organic binder; lead-free Glass powder 0.5-20%. The graphene/nano-silver composite powder is made by modifying the amino group on the surface of the nano-silver powder, modifying the carboxyl group on the surface of the graphene, and then bonding the graphene and the nano-silver powder together through acid-amine condensation to obtain a well-dispersed composite powder. Powder. The present invention uses graphene/nano-silver composite powder to replace traditional silver powder, which reduces the solid content of silver powder and effectively reduces the cost; the use of lead-free glass powder in the silver paste preparation process greatly reduces the harm to the environment and human body ; The preparation process of the composite electronic silver paste is simple, easy to operate, and beneficial to industrial production.

The invention relates to a preparation method of a polymer weak gel deep profile control agent. The preparation method comprises the following steps of preparing sodium carboxymethyl cellulose and distilled water into sodium carboxymethyl cellulose water solution of which the mass percentage is 1%-2%; adding acrylamide of which the mass is 2-8 times as great as that of the sodium carboxymethyl cellulose into the sodium carboxymethyl cellulose water solution, and then adding a cross-linking agent which accounts for 0.01%-2% of the total weight of the sodium carboxymethyl cellulose and the acrylamide; enabling nitrogen to enter into a closed system and isolating the air, and adding an initiating agent which accounts for 1%-2% of the total mass of the sodium carboxymethyl cellulose and the acrylamide; and discharging after carrying out constant-temperature reaction for 4-12 hours under the temperature of 30-60 DEG C. According to the preparation method disclosed by the invention, the acrylamide is grafted to the sodium carboxymethyl cellulose, polymer weal gel with a mesh structure is formed under the action of the initiating agent and the cross-linking agent, and a polymer weak gel system integrates the advantages of the sodium carboxymethyl cellulose and the acrylamide.

The invention discloses graphene composite copper thick film conductive slurry. The graphene composite copper thick film conductive slurry comprises the following components in percentage by mass: 60%-80% of conductive phase, 0.5%-5% of glass phase, 15%-39.5% of organic carrier, totaling 100%. The preparation method comprises the steps of mixing the components, heating to 35-40 DEG C, and uniformly stirring. According to the graphene composite copper thick film conductive slurry disclosed by the invention, by adding graphene with an excellent conductive property, the conductive property of the slurry is improved; by bismuth oxide low-melting glass, the conductive thick film slurry has excellent electrical properties and adhesion force even when being sintered at a low temperature. The slurry has the advantages of good conductivity and small printing thickness, can be effectively applied to production of a conductive material for various products, has the advantages of simple preparation process, convenience in operation, good conductivity, uniform distribution of particle sizes and easiness in coating, and is suitable for mass production of enterprises.

The invention discloses a low solid phase and micro-foam drilling fluid or completion fluid capable of being used circularly, comprising the following components in portions by weight: 3-4 portions ofmicro-foam and low-solid phase composite treating agent SD-LGA capable of being used circularly, 0.5-1 portion of low-density and low-solid phase tackifier SD-LGV, 0.5-1 portion of low-density regulator SD-LFD, 0.5-1 portion of low-density foam stabilizer SD-LFS, 0.5-1 portion of low-density flowing type regulator SD-LFR and 100 portions of clear water. The preparation method comprises the following steps: sequentially adding the components into the clear water in a conventional preparation method according to the weight content of each component at normal temperature and normal pressure, andthen, uniformly mixing and stirring the components for use. The drilling fluid or completion fluid has the advantages of low solid phase, low density, high foam stability, high structural strength, high fluid phase viscosity, high flexibility, high lubricity, very low toxicity, easy biodegradation, circular use, little influence on environment, little harm to a storage layer, high permeability recovery value, good effect on protection of an oil-gas layer and the like, and is widely applied to a drilling engineering technology of petroleum and geology.

The invention provides strong-sealing drilling fluid for preventing collapse of carbonaceous mudstone. The strong-sealing drilling fluid is prepared from water and is further prepared from, by mass of water, 5-15% of liquid phase weighting agent, 3-5% of temperature resisting agent, 3-7% of inhibitor, 0.3-0.5% of tackifier, 2.0-3.0% of fluid loss agent, 4.0-8.0% of blocking agent, 0.1-0.15% of basicity control agent, 1.0-2.0% of lubricant and 30-50% of solid weighting agent. Through the synergistic effect of bridging, filling, deformation, the fluid lock effect and the like, a blocking layer formed on the surface of the well wall is compact in cementation and has a good blocking effect on micro-cracks; the situation that drilling fluid filtrate is immersed into mud rock micro-cracks is effectively reduced, the blocking performance is highlighted, and meanwhile other performance can be considered; liquid phase density is improved, the solid phase content is reduced, and adjustment of the rheological property of the drilling fluid is promoted; reservoir protection is promoted, and the yield of an oil-gas well is increased.

The invention relates to a chemical-mechanical polishing composition comprising silica, one or more organic carboxylic acids or salts thereof, one or more polysaccharides, one or more bases, optionally one or more surfactants and/or polymers, optionally one or more reducing agents, optionally one or more biocides, and water, wherein the polishing composition has an alkaline pH. The polishing composition exhibits a high removal rate and low particle defects and low haze. The invention further relates to a method of chemically-mechanically polishing a substrate using the polishing composition described herein.

The invention relates to a process for preparing drilling fluid, in particular to a process for preparing the drilling fluid for preventing polycrystalline diamond compact (PDC) bit balling. The process comprises a construction process and a dosage formula of treating agents and is characterized in that: according to the dosage formula, the treating agents are prepared by mixing clear water polymer original slurry, poly anionic cellulose (PAC), calcium carbonate (QS-4), carboxymethyl starch (CMS), sulfonated phenolic resin(SMP-2), water dispersible cation emulsified asphalt powder (SFT-1), sodium chloride(NaCL) and sodium formate (WT-1) in a mass ratio of 1,000:2-3:30-40:20-30:2-3:1.5-2:50-100:20; and the construction process comprises the following steps of: according to a circulation circle, uniformly mixing a coating agent PAC, a filtrate reducer CMS, a salt and high-temperature resistant filtrate reducer SMP-2 and an anti-sloughing lubricant SFT-1 for 12h at first; adding QA-4, NaCL, WT-1 into the mixture and uniformly mixing the mixture; and regulating the mixture to have a density Rho of 1.06 to 1.10g/cm<3>, a funnel viscosity T of 38 to 45s and an API water loss FL of 4 to 6ml. The process has the advantages of effectively preventing the balling of a sticking bit and a PDC bit at a lower curved section, reducing a frictional resistance and a torque, eliminating a sticking phenomenon, improving a mechanical drilling rate and ensuring downhole safety.

Rosin-based flux for a ZnSn-based lead free solder comprises rosin, an organic acidity activator, a corrosion inhibitor, a surfactant and an organic solvent. According to the invention, the solder can be additionally provided in injection, spraying or atomization method, the addition amount is easy to accurately control, the disadvantage that the prior soldering flux is hard to brush is overcome, no paste agent, stabilizing agent or thixotropic agent or other substances containing high solid content are included, the solid content of the solder is low, the wetting power to ZnSn-based solder is strong, the residue after welding is little, a metal oxide-film can be effectively removed, the expansion rate is not less than 75%, the effects of film forming and base material protection are possessed, and the preparation method is simple and practicable.

The invention belongs to the field of welding materials, and particularly relates to a halogen-free, low-residue, high-impedance and cleaning-free flux, which comprises the following components: 2-15wt% of activator, 0.05-2wt% of dispersing agent, 0.5-4wt% of film-forming agent, 0.1-4wt% of additive and 75-97.35wt% of solvent. Compared with the prior art, the flux has the advantages that the expansion ratio of the flux is higher than 80% of the standard, the flux is moderate in weldability and halogen-free, ionic contamination is at the highest I grade, the flux is applicable to high-reliability electronic products, the surface insulation resistance of the flux is at a 1010 grade after a copper mirror corrosion test, and the flux has the advantages that the flux is high in insulation impedance, high in insulation resistance, low in electric leakage risk, low in solid content, environment-friendly, clean and cleaning-free, residue is less, a post-weld board is tack-free and the like.

The invention provides an efficient high-precision sapphire polishing solution and the preparing method, which relates to the polishing technology on sapphire, in particular to the polishing solution technology which can finely polish the surface. Firstly, nano silica sol particles, the particles diameters of which are 15-80 nanometers, are dispersed into water to form suspension; and then complexation agent is added into the suspension; and then surface active agent is added into the suspension; finally, the PH value of the suspension is regulated to 10-11. The invention has simple and rational production process, can be produced simply, contains low solid content, has high polishing efficiency, has strong stability, can hardly deposit on the surface of the polishing machine and the object to be polished, can hardly be air-dried on the surface of the sapphire after polishing due to the unique fluidity, and can lighten the burden of the following cleaning process greatly.

The invention relates to the technical field of biofuel, in particular to a device for preparing the biofuel by the quick thermal cracking of biomass. The device comprises an air carrier system, a feeding system, a fluidized bed reactor, a cyclone separator, a hot vapor filter, a biofuel collection system, sensing mechanisms and a data acquisition and control system, wherein the feeding system is connected with the fluidized bed reactor; the cyclone separator, the hot vapor filter and the boilfuel collection system are connected in series through a pipeline in turn; the air carrier system is connected with the fluidized bed reactor, the hot vapor filter and the feeding system respectively; many groups of sensing mechanisms are positioned at the test points of the fluidized bed reactor, the cyclone separator and the hot vapor filter respectively; and the data acquisition and control system is connected with the plurality of sensing mechanisms and acquires the temperature and pressure of each test point. The device has the characteristics of simple and practical structure and lasting and stable feed and improves boifuel quality.

The invention discloses a special coloring agent of a diammonium phosphate compound fertilizer, comprising the following constituents: 40-50 parts of humic acid salt, 0.1-3 parts of carbon soot, 2-4 parts of acid black, 1-2 parts of acid brilliant scarlet, 0.2-1 part of sodium hexametaphosphate, and 40-56.7 parts of water by weight parts; the preparation process is that: the material is prepared by weight parts, water is added in a vertical round reaction tank, and then the humic acid salt, the carbon soot, the acid black and the acid brilliant scarlet are added and are stirred uniformly, andthen sodium hexametaphosphate is added, the mixture is stirred continuously and uniformly, so as to obtain the special coloring agent of the diammonium phosphate compound fertilizer; the invention solves the problems that the diammonium phosphate particles produced under an acid slurry condition are easy to decolorize and the chromaticity is unstable; the special coloring agent of the diammonium phosphate compound fertilizer is green and environmental-protection, has no pollution and is beneficial to the growth of crops; the product is in a liquid state and transported closely, and has convenient usage; the raw material is cheap and easy to obtain, the cost is low and the economic benefit is good.

The invention relates to a water-based non-clay drilling fluid having strong inhibition which comprises, 0.2%-0.5% of construction agent, 0.8%-6% of at least a fluid loss additive, 3%-25% of at least an inhibiting agent, 0.2%-0.8% of at least a pH conditioning agent, and balancing water.

The invention relates to a water-based drilling fluid system for deepwater operation, which is prepared from (by weight): 100 parts of water-based fluids, 3-4 parts of inhibitors, 0.4-0.8 parts of low molecular-weight coating inhibitors, 2.5-5.5 parts of filtrate loss reducer, 0.2-0.3 parts of alkalinity regulators, 10-20 parts of NaCl, 2-3 parts of lubricants, 0.2-0.4 parts of flow regulators, 3-5 parts of KCl and 5-80 parts of weighting agent. The invention further relates to a preparation method for the water-based drilling fluid system for deepwater operation.