87results about How to "Water repellent" patented technology

The invention discloses an anti-termite inorganic flake waterborne epoxy resin coating. The waterborne epoxy resin coating comprises a component A and a component B, wherein the component A comprises the following components in percentage by weight: 60%-80% of bisphenol low-molecular-weight liquid epoxy resin, 4.5%-10% of active diluent, 0.2%-1.0% of dispersing agent, 0.05%-0.1% of defoaming agent, 0.2%-0.8% of non-ionic surfactant, 0.1%-0.2% of anti-settling agent, 8%-30% of extender pigment / filler, 0.5-15% of microcapsule particle dispersion suspension aqueous emulsion containing an insecticide and 5%-20% of inorganic flake material; and the component B comprises the following components in percentage by weight: 39%-65% of modified waterborne amine curing agent, 34%-60% of water, 0.2%-0.4% of dispersing agent, 0.2%-0.5% of defoaming agent and 0.2%-0.8% of flatting agent. The waterborne epoxy resin coating disclosed by the invention has the advantages of very good waterproof and moisture-proof property and anti-termite property.

The invention discloses a preparation method of an ultrafine dry powder extinguishing agent with good water repellency. The preparation method comprises the following steps: gypsum, carbon nanotubes,phosphomolybdic acid and magnesium carbonate powder are uniformly mixed for drying and grinding to obtain precast materials; the precast materials are preheated; sodium bicarbonate, monoammonium phosphate, alum compounds, magnesium carbonate powder and ammonium sulfate are added in sequence in a stirring state for continuous stirring; silicone oil is sprayed inside in the stirring state for continuous stirring; pentaerythritol is added for continuous stirring; and the ultrafine dry powder extinguishing agent with good water repellency is obtained through drying, crushing and screening. The alum compounds are prepared by adopting the following process: alums are added in ethanol solution for uniform mixing; liquid paraffin is added for heat stirring, filtering and spray stirring; magnesiumstearate, pentaerythritol and white oil are added in sequence in the stirring state for uniform stirring; and the alum compounds are obtained through cooling. The preparation method is simple and lowin production cost; and the prepared dry powder extinguishing agent is excellent in fire extinguishing performance, and achieves excellent water repellency, fluidity and caking resistance.