36results about How to "Good solid content" patented technology

A nano alumina slurry composition for ceramics, paint, ink, etc is prepared from nano alumina (150 nm), high-molecular disperser, and solvent through sequentially and proportionally adding said disperser and alumina to solvent, high-speed dispersing at 400-3000 rpm for 10-60 min, and grinding for 20 min-24 hr. Its advantages are high content of solid, low viscosity and high stability.

The invention provides a waterproof-level soy protein adhesive and a preparation method thereof and relates to an adhesive and a preparation method thereof, in particular to a modified soyabean protein adhesive for waterproof-level plywood. The waterproof-level soy protein adhesive aims at solving the technical problem that an existing adhesive for plywood is not waterproof. The preparation method comprises the steps of beam flour acid heat treatment, beam flour liquidation, polyamide solution synthesis and adhesive modulation. Degreased beam flour or soya bean meal left after soybean oil expelling is used as a main raw material, the water resisting property of the beam flour and the solid content of the soy protein adhesive are improved through acid heat treatment, the cross-linking efficiency, cementing effect and process usability of the soy protein adhesive are improved through liquidation, the water resisting property of the soy protein adhesive is improved through cross-linking of polyamide polyamine resin, and finally the soy protein adhesive high in beam flour content, low in viscosity, long in working life and good in water resisting property and used for the waterproof-level plywood is prepared. The waterproof-level soy protein adhesive and the preparation method belong to the field of adhesive preparation.

The invention discloses a low-damage water-based drilling fluid suitable for the Ecuadorian rainforest and a preparation method thereof. agent, pH adjuster, soluble salt weighting agent and water, wherein the weight percentage of each component is: thickener 0.2~1.0%, fluid loss reducer 0.4~1.0%, preservative 0.05~0.2%, Acid soluble temporary plugging agent 2.0~4.0%, temperature control lubricant 0.2~0.8%, pH regulator 0.05~0.2%, soluble salt weighting agent 1.0~3.0%, water to make up the balance. The preparation and maintenance of the water-based drilling fluid system of the present invention are simple, no additional auxiliary equipment is needed, it has the characteristics of low viscosity and high shear, and at the same time it has low water loss, good plugging effect, can effectively protect the reservoir, is easy to store, and can reuse.

The invention relates to a low-temperature, halogen-free, low-solid-content modified rosin-type welding flux. The welding flux is prepared form, by mass, 10-15% of modified rosin, 1-5% of organic acidactivator, 0.35-1% of glycerin, 0.009-1% of benzotriazole, 0.3-1 % of triethanolamine, a surfactant and the balance organic solvent, wherein the surfactant is 0.5-3% of the mass of the organic acid activator. The prepared low-temperature, halogen-free and low-solid-content modified rosin-type welding flux prepared has good fluidity, no precipitation and delamination phenomena, no halogen elements, a small amount of modified rosin, a good spreading rate, good weldability, bright and full welding spots and less residues after welding, little corrosion is caused, and cleaning is not needed; therequirements for environmental protection are met; an operation method is sample, the temperature is moderate, there are less experimental steps, the cost is low, less by-products are generated in a synthesis process and are easy to remove, and the synthesis time is short.

The invention discloses a method for synthesizing a flocculating agent with the high solid content and high molecular weight based on inversion emulsion.The method comprises the steps that a compound emulsifier composed of a Gemini-type emulsifier and a traditional surface active agent is dissolved into an oil phase, a water phase containing an alkene flocculating agent monomer is slowly added into the oil phase, stirring and emulsification are performed to obtain a pre-emulsion, a bifunctional initiating system is added into the pre-emulsion to initiate a polymerization reaction, and emulsion is obtained after the polymerization reaction is completed.The obtained flocculating agent emulsion is high in solid content, large in intrinsic viscosity, good in stability and capable of being widely applied to red mud separation in aluminum oxide production.

The invention discloses a novel method for coating microcapsules, and particularly relates to a method for realizing coating for microcapsules by film transfer. The method disclosed by the invention comprises the following steps of: a, running coating rolls and achieving a running speed, when the tail of paper is led through a coating machine, turning on full-width spraying water, driving an acting combined beam by a cylinder, rotating a metering rod, pressurizing by a loading air pocket, and charging a microcapsule coating by a charge tube; b, when a loading pressure is stable and coating layers on the surfaces of the rolls are uniform, and turning on edge-spraying water; and c, after paper is spread with a full width on the coating machine, bonding the two coating rolls, turning on the full-width spraying water to an automatic position, and adjusting a coating weight according to a coating weight horizontal curve, and via the adjustment of a fine adjustment mechanism and the pressurization of the loading air pocket. The method disclosed by the invention has the advantages that control on the coating weight is stable; the coating weight is convenient and fast to adjust by the fine adjustment mechanism; and a coating solid content is high, so that a requirement on the drying capacity after coating is low, thus reducing steam consumption, and the production cost of per ton of paper.

The invention discloses a compound brine drilling fluid which comprises the following components in parts by weight: 100 parts of water, 0.12-0.17 parts of sodium hydroxide, 0.15-0.25 parts of polyanionic cellulose, 0- 0.3 parts of carboxymethyl cellulose, 2-5 parts of calcium carbonate, 0.8-1.2 parts of sulfonated tannin, 0.8-1.3 parts of graphite powder, 0-1 part of filtrate reducer A, 0.8-1.2 parts of filtrate reducer B, 2-10 parts of sodium formate, 3-15 parts of sodium chloride and 1.8-2.5 parts of potassium chloride. The composite brine drilling fluid disclosed by the invention has good inhibition effect on water-sensitive minerals in reservoirs and low harm to the permeability of reservoirs, is free of clay phase and low in the content of solid phase and hardly damages stratum. The composite brine drilling fluid has the advantages of good rheology, strong inhibition and lower cost; the site preparation process is simple, operation and maintenance are convenient and the composite brine drilling fluid can be effectively applied to protective drilling operations of low-porosity, low-pressure and low-permeability reservoirs.

The invention relates to a nano-zirconia slurry composition and a preparation method thereof. The composition is composed of 10-75% of nano-zirconia with an average particle diameter of primary particles below 100nm, and 0.4-15% of a polymer dispersant. %, the remainder of the solvent composition; the preparation method is to add the polymer dispersant to the solvent, then add nano-zirconia, disperse with a high-speed disperser at 400-2200rpm for 10-70 minutes, and grind the obtained nano-zirconia slurry for 15 minutes- After 30 hours, the finished product of nano-zirconia slurry is made. The nano zirconia slurry of the present invention is a dispersion system with high solid content and low viscosity, has good monodispersity and high stability, and can be widely used in the fields of ceramics, coatings, inks, textiles, cosmetics, adhesives and the like.