37results about How to "Good viscosity performance" patented technology

The invention discloses a concrete viscosity regulator suitable for compatible use with a polycarboxylic acid water reducer and a preparation method thereof; the concrete viscosity regulator comprises the components by the weight percentage: 0.1%-10% of a clay stabilizer, 0.01%-5% of an air-entraining agent, 0.001%-5% of a foam stabilizer, 0.001-10% of a thickener, and 75%-99% of water. The preparation method comprises the steps: firstly, adding water to a stirrer, fully mixing evenly other components, starting up the stirrer, after running smoothly, slowly adding the materials, and thus obtaining the concrete viscosity regulator when the materials are fully dissolved and stirred evenly. With cooperative use of the prepared viscosity regulator with the polycarboxylic acid water reducer, the polycarboxylic acid water reducer can be promoted to be adsorbed on cement particle surfaces to form a water film lubrication layer, a cement slurry steric-hinerance effect and rheological properties (the cement slurry has low plastic viscosity and higher yield stress) are effectively increased, wrapping performance on aggregates is increased while the viscosity of the concrete slurry is reduced, and thus the concrete construction performance is improved.

The invention discloses a preparation method of liquid butadiene-acrylonitrile rubber with a high nitrile content. The preparation method comprises the steps of mixing a carbon nano tube and water, stirring at a high speed to allow the carbon nano tube to be dispersed uniformly, adding the dispersed carbon nano tube in a reactor containing ester, an emolsifier and the water, controlling the temperature at 50-100 DEG C to allow the ester to coat and polymerize the carbon nano tube to form a seed solution, dropwise adding the ester to prepare functional composite emulsion, adding the water, acrylonitrile, cellulose and the emolsifier into a polymerization kettle, then adding butadiene and the functional composite emulsion, start the polymerization kettle to stir, then cooling the polymerization kettle, when cooling the polymerization kettle to 15-25 DEG C, adding an initiator and a molecular weight regulator, performing polymerization reaction for 10-16h, then adding a terminator, and allowing latex to be degassed and cohered to form a product. According to the liquid butadiene-acrylonitrile rubber with the high nitrile content prepared by the method, the mass percentage of combined acrylonitrile is 28-35%.

The invention relates to an antibacterial low-melting-point hot melt adhesive. The antibacterial low-melting-point hot melt adhesive is processed from the following raw materials in parts by weight: 40-80 parts of a polyester hot melt adhesive, 20-30 parts of polyamide resin, 3-8 parts of paraffin, 0.5-1 part of an antioxidant 164 and 0.5-1 part of an inorganic antibacterial agent. A preparation method of the antibacterial low-melting-point hot melt adhesive comprises the following steps: uniformly mixing the polyester hot melt adhesive, the polyamide resin, the paraffin, the antioxidant and the inorganic antibacterial agent according to the formula ratio, adding the mixture into a screw extruder granulator, carrying out melt blending extrusion, cooling and granulating the extruded mixture, and carrying out vacuum drying on the aggregates to remove moisture, so as to obtain the antibacterial low-melting-point hot melt adhesive. By mixing the low-melting-point polyester hot melt adhesive with the polyamide resin, the paraffin, the antioxidant and the inorganic antibacterial agent, the prepared hot melt adhesive is stable in binding power, high in curing speed and convenient to use and does not easily mildew, the environmental influence is low, and particularly, the curing rate is prior to that of the hot melt adhesive in the prior art in a low-temperature environment; the production efficiency is greatly improved, the cooling curing time is substantially shortened after the coating of the hot melt adhesive, and the coating efficiency is remarkably improved.

Readily water-miscible beta-glucan suspensions and methods of making and using the same. A readily water-miscible beta-glucan suspension includes a beta-glucan and a water-miscible organic fluid thatcomprises an alcohol, an alpha-hydroxy acid alkyl ester, a polyalkylene glycol alkyl ether, or a combination thereof, wherein the suspension is sufficient such that mixing with water at a shear rate of 40,000 s-1 or more forms a homogeneous mixture of the suspension and the water. The present invention also provides methods of dispersing the water-miscible beta-glucan suspension in water to form homogenous mixtures of the suspension and the water, methods of treating subterranean formations with such homogeneous mixtures, and methods of making the suspension.