42results about How to "Not easy to remove powder" patented technology

The invention provides a polyvinyl alcohol graft copolymer which comprises a polyvinyl alcohol main chain, and a branched chain of the polyvinyl alcohol graft copolymer comprises a structural unit derived from the following monomers: (a) a fluorine-containing olefinic unsaturated monomer, (b) an olefinic unsaturated carboxylic acid monomer and (c) an olefinic unsaturated amide monomer. The invention also provides a water-based adhesive composition containing the polyvinyl alcohol graft copolymer and an electrode slurry composition containing the polyvinyl alcohol graft copolymer.

The invention relates to the fields of energy saving and environmental protection, and in particular, relates to a method using granular activated carbon for decoloration and impurity removal. The method comprises the steps: dissolving a taurine crude product in hot water, carrying out coarse filtration, filtering out floccule and other suspended solids, then pumping into carbon towers filled with granular activated carbon by pumps, carrying out alternative decoloration and impurity removal with the two granular activated carbon towers, after adsorption is close to saturation, carrying out in-situ regeneration by alternatively using steam condensed hot water, and continuously producing. The activated carbon towers work for 9-15 months, and then the granular activated carbon is subjected to ultrasonic and microwave collaborative regeneration for reuse. The granular activated carbon is regenerated and reused, the use amount of the activated carbon is reduced, the method is green and environmentally friendly and saves energy, the production cost is reduced, the operating environment is improved, the continuty of decoloration and impurity removal of taurine is realized, the production process and technology are simplified, and the method is simple and convenient to operate, high in degree of automation and especially prone to realization of industrialization.

The invention proposes a plastering mortar, which is prepared by weight from the following raw materials: 100-150 parts of polyurethane / epoxy resin / diatomite composite material, 15-20 parts of lime paste, 10-15 parts of 102 glue, mineral 30-40 parts of admixture, 70-120 parts of Portland cement, 7-12 parts of carboxymethyl cellulose, 3-10 parts of styrene, 3-5 parts of antifreeze, 4-7 parts of water reducer, gelatin 5‑10 parts, 3‑5 parts of sodium dodecylbenzenesulfonate, 5‑15 parts of polyethylene glycol 4000 and 200‑300 parts of water. The invention has good cohesiveness, high strength, strong waterproof ability, good moisture-proof, powder-repelling and crack-proof effects, simple preparation method, low cost, easy popularization and broad application prospects.

The invention discloses a water purification device with sterilization function, comprising a water purification box shell and a water purification box inner tank. A water inlet is arranged above one side of the water purification box shell, and the water inlet is connected to the water purification box body. A water outlet is arranged under one side of the shell of the water purification tank, and the water outlet is communicated with the inner tank of the water purification tank; an activated carbon filter layer is laterally arranged inside the inner tank of the water purification tank; the activated carbon filter layer is Processed from activated carbon antibacterial material and food grade adhesive. The invention is provided with a filter screen and an activated carbon filter layer for double-layer filtration, the filter screen can block relatively large particles of water impurities, and the activated carbon filter layer can adsorb and filter the tiny particles and impurities in the water, so that the final moisture content of impurities reduced to a minimum. At the same time, the activated carbon filter layer and the ultraviolet germicidal lamp are combined to fully sterilize and inhibit the water to be purified, and achieve the effect that bacteria are not easy to breed even after long-term use.

The invention relates to an ozonolysis catalyst and a preparing method and application thereof. The method comprises the steps of mixing a forming carrier with a manganese source solution, after fullwetting, conducing drying, then mixing the mixture with additive, conducting a reaction at constant temperature, after the reaction is completed, obtaining a regular carrier covered with a manganese precursor, and after baking, obtaining a catalyst product, wherein when manganese in a manganese source is at +7 price, the additive is reductant, and when manganese in the manganese source is at +2 price, the additive is oxidizing agent. The catalyst preparing process and the forming process are integrated, on the basis of the forming carrier, efficient manganese-based ozone catalyst is subjectedto in-situ growth on the outer surface of the forming carrier, the catalyst is stably combined with the carrier, the surface of the catalyst is stable, powder does not easily fall off, the particle size is adjustable, the appearance is formed, the ozonolysis capability is also efficient, the ozonolysis catalyst conveniently fills all air purifiers or fresh air system modules, production of an airpurification module can be accelerated, and the application prospect is good.

The invention relates to the technical field of lithium batteries, in particular to a high-voltage positive plate and a preparation method thereof. The high-voltage positive plate comprises a positivecurrent collector and a positive pulp layer coated on the surface of the positive current collector, the positive pulp layer is obtained by carbonating a positive active material, a composite conductive agent and binder, and the composite conductive agent is composed of 57-79wt% of cellulose, 20-40wt% of graphene and 1-3wt% of aluminite powder. The high-voltage positive plate and the preparationmethod thereof have the advantages that the cellulose is added into the composite conductive agent, the high-voltage positive plate has a better network structure after the cellulose is carbonized, the migration rate of lithium ions in an electrode material can be effectively improved, the charging and discharging efficiency is improved, the use amount of the graphene is reduced, and the cost is reduced; a small amount of aluminum powder is added into the conductive agent, the practice shows that the electrical conductivity of the positive pulp layer can be effectively improved, and the effectof improving the charging and discharging of large current is achieved.

The invention provides a method for reusing acidic wastewater from the preparation of titanium-silicon molecular sieves; the method comprises the steps of (1) preparing a regenerating medium; (2) filling a packing column with the regenerating medium prepared in step (1); (3) filling the packing column continuously with acidic wastewater to obtain a reclaimed liquid; in the method for reusing acidic wastewater from the preparation of titanium-silicon molecular sieves, cation exchange resin and activated carbon are used to prepare a regenerating medium to treat acidic wastewater for reuse, titanium-silicon molecular sieves washed with the reclaimed liquid have high catalytic activity, and less hydrogen peroxide in catalytic reaction is degraded; in addition, the method of the invention reuses sulfuric acid solvents from the preparation of titanium-silicon molecular sieves, resources are saved, pollution is decreased, and wastewater emission and posttreatment are avoided.