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36results about How to "High HLB value" patented technology

High-temperature-resistant high-density reversible water-in-oil/oil-in-water drilling fluid and preparation method thereof

The invention provides high-temperature-resistant high-density reversible water-in-oil / oil-in-water drilling fluid which is composed of the following raw materials in parts by weight: 30-70 parts of an oil phase, 30-70 parts of an aqueous phase, 2-5 parts of a reversible emulsifier, 1-3 parts of an auxiliary emulsifier, 0-2 parts of organic soil, 1-4 parts of a filtrate reducer, 0-1 part of an alkalinity regulator, 0-0.5 part of a wetting agent, 0-2 parts of an enhancer and 0-800 parts of weighting materials. The reversible emulsifier is fatty acyl polyamines and derivatives thereof, and has astructural general formula of R1(CH2)m(CONH)n(C6H4)x(NH)y(NH2)zR2; the filtrate reducer is an amphiphilic filtrate reducer. The amphiphilic filtrate reducer comprises but is not limited to an amphiphilic polymer filtrate reducer, a hydrophilic modified asphalt filtrate reducer and a hydrophobic modified humic acid filtrate reducer. The compounded auxiliary emulsifier is a high HLB (Hydrophile-Lipophile Balance) value surfactant. The drilling fluid disclosed by the invention has directly adjustable density of 0.8-1.8g / cm<3>, and has excellent properties such as rheological property, suspensionstability, filter cake clearance, filter loss control, environment friendliness and stable reversibility of water-in-oil emulsion and oil-in-water emulsion in a range of 100-180 DEG C.
Owner:SOUTHWEST PETROLEUM UNIV

Preparation method of viscosity-reducing type polycarboxylic acid water reducer

InactiveCN107501479AReduce Stem layer thicknessWeakened bridgingChemistryAcid water
The invention discloses a preparation method of a viscosity-reducing type polycarboxylic acid water reducer. The preparation method comprises the following steps: (1) adding 4-hydroxybutyl vinyl polyoxyethylene ether, phosphoric acid with a concentration of 85% and phosphorus pentoxide into a reaction container for a reaction in a temperature of 40 DEG C for 3-4 hours; (2) adding a proper amount of water, performing stirring for dissolution, adding part of unsaturated carboxylic acid monomers and controlling the pH value in a range of 4-5; (3) controlling the temperature in a range of 15-30 DEG C, adding an oxidant solution and performing full stirring; and (4) separately dropwise adding remaining unsaturated carboxylic acid monomers, unsaturated aromatic monomers, a mixed solution of fluorine-containing unsaturated monomers and a chain transfer agent, and a water solution of a reducing agent, after the adding, performing curing for at least 1 hour, and finally adding a water solution of sodium hydroxide for neutralization to obtain the polycarboxylic acid water reducer. The product provided by the invention can effectively reduce the thickness of the Stem layers on the surfaces of glue material particle dispersion, weaken the bridging effects between neighbouring dispersion, greatly reduce the backflow time of high-viscosity concrete, and improve the construction properties of concrete.
Owner:KZJ NEW MATERIALS GROUP CO LTD

Hydrophobically associated anionic polyacrylamide water-in-oil emulsion and preparation method thereof

ActiveCN110563876ASolve the problem of isolated and random distributionImprove shear resistancePapermakingOil phase
The invention relates to a hydrophobically associated anionic polyacrylamide water-in-oil emulsion and a preparation method thereof. The method comprises the following steps: preparing an aqueous phase solution containing an emulsifier, deionized water, acrylamide, an anionic monomer, a water-soluble oxidant and a complexing agent; adding an emulsifier into a solvent oil to prepare an oil phase solution; dropwise adding the aqueous phase solution into the oil phase solution to obtain a water-in-oil pre-emulsion; introducing nitrogen into the water-in-oil pre-emulsion to remove oxygen, adding areducing agent, and carrying out oxidation-reduction reaction; and after the oxidation-reduction reaction is finished, adding a phase inverter to obtain the hydrophobically associated anionic polyacrylamide water-in-oil emulsion. The hydrophobically associated anionic polyacrylamide water-in-oil emulsion prepared by the method has high salt resistance and shearing resistance, is high in molecular weight, has the capability of being quickly dissolved in water, can achieve the effect of instant dissolution after use, and can be widely applied to the fields of oil and gas exploitation, sewage treatment, papermaking, mining and mineral separation and the like.
Owner:JIANGSU FEYMER TECH

High-efficiency air-entrainer for roller compacted concrete and preparation method thereof

InactiveCN110002783AImprove bleed air efficiencyGood foam stabilization effectAlkaneRoller-compacted concrete
A high-efficiency air-entrainer for roller compacted concrete and a preparation method thereof are disclosed. The air-entrainer is prepared from the following raw materials (by weight): 22-25 parts of1,4-dibromobutane, 43-58 parts of long-chain alkyl primary amine, 16-18 parts of formaldehyde, 13-17 parts of formic acid, 38-42 parts of sodium 3-chloro-2-hydroxy propanesulfate, 20-30 parts of deionized water, 100-110 parts of anhydrous ethanol, and a sodium hydroxide solution. The long-chain alkyl primary amine is one or two of dodecanamine, tetradecyl primary alkane and hexadecyl primary amine. The invention also provides a preparation method of the air-entrainer. The air-entrainer of the invention has a good molecular structure, is endowed with lower surface tension, lower critical micelle concentration and good foam performance and foam stability in comparison with a common concrete air-entrainer, especially has advantages of low dosage and high gas content for roller compacted concrete with low cubic water consumption, and can be applied to water conservancy and water-power engineering. The air-entrainer of the invention has high air-entraining efficiency, good foam stability,low dosage and good dissolvability, is convenient to use, and is economical and practical.
Owner:刘翠芬
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