294results about How to "Improve hydrophobicity and oleophobicity" patented technology

The invention discloses an antifouling adhesive preventing coating which comprises the following components in parts by weight: 60-80 parts of polymer emulsion, 3-7 parts of water repellent agent, 1-2 parts of first adhesive preventing agent and 3-7 parts of second adhesive preventing agent, wherein the polymer emulsion is selected from one of fluorine and silicon modified acrylate emulsion, fluorine emulsion and silicon acrylic emulsion; the water repellent agent is water-soluble wax emulsion; the first adhesive preventing agent is a fluorine modified surface auxiliary agent with a water and oil repellent structure; and the second adhesive preventing agent is polyether modified hydroxyl functional polydimethylsiloxane. The invention also discloses a preparation method of the antifouling adhesive preventing coating. The coating of the invention has the performances of low surface energy, water and oil repellency, oil fouling resistance, adhesive sticker bonding prevention, and the like and has favorable antifouling adhesive preventing function and superhigh scrubbing resistance and is rapid and convenient for construction. Compared with the market sold solvent type product, the invention has the characteristic of environmental protection and can be suitable for indoor coating.

The invention discloses a preparation method of a super-amphiphobic coating, which comprises the following steps: preparing a fluorine-containing silane polymer solution; adding ethyl orthosilicate, water and hydrochloric acid into the fluorine-containing silane polymer solution to perform hydrolysis reaction to obtain a mixed solution; adding nano silicon dioxide into the mixed solution, and uniformly mixing to obtain a composite sol; and applying the composite sol on the substrate, curing and drying to obtain the super-amphiphobic coating. The cured superhydrophobic coating has the advantages of favorable hydrophobicity and oleophobicity, favorable mechanical properties, favorable heat resistance and favorable light transmittance.

The present invention relates to a self-cleaning nano protective liquid used for glass and a preparation method. According to the self-cleaning nano protective liquid used for glass, a thin film coating formed by the nano protective liquid is provided with a similar structure of a lotus leaf surface in nature, wherein the structure is a nano-micro composite layer structure, and the coating is a colorless transparent thin film coating, with a thickness of 400-1000nm. The coating provided by the present invention has superior properties of water-proofing, oil-proofing, anti-fouling, anti-fogging, moisture-proofing, and the like. A contact angle of the coating and water is 140-155 DEG (a droplet volume is measured as 4 mu L), a roll angle of a water droplet on a coating surface is less than 5 DEG (a droplet volume is measured as 4 mu L). The water droplet existed on the the coating surface is freely rollably, meanwhile contaminations of dust and the like are removed, and thereby achieving the superior properties of anti-fogging, anti-fouling and the like.

The invention discloses a long-acting hydrophobic-oleophobic surface treatment process which comprises the following steps: 1. etching the surface of a substrate to obtain a micro-nano structure with coarse surface; 2. dipping and coating hydrophilia nano silicon dioxide sol on the surface of the etched substrate, and drying to obtain a transparent silicon dioxide film; and 3. dipping and coating perfluor acid anhydride alky triethoxy silane on the surface of a joint layer, and drying to obtain a hydrophobic-oleophobic layer. According to the long-acting hydrophobic-oleophobic surface treatment process, the hydrophobic-oleophobic layer with good compactness can be obtained, so that better hydrophobic-oleophobic performance and stronger wear resistance can be achieved by surface treatment.

The invention discloses a fire extinguishing agent containing modified medical stone powder, which is prepared from the following raw materials in parts by weight: 50-80 parts of modified medical stone powder, 5-10 parts of talcum powder, 10-15 parts of zinc sulfide hydrate, 3-5 parts of calcium carbonate, 5-8 parts of magnesium stearate, 3-5 parts of methyl silicone oil, 2-3 parts of hydrophobic silica white, 3-5 parts of atlapulgite, 2-3 parts of perlite, 2-3 parts of ethylene glycol, 5-8 parts of calcium lignosulphonate, 3-5 parts of bamboo charcoal fiber, 2-3 parts of industrial essence, 2-4 parts of zinc borate, 1-3 parts of chlorinated paraffin, 5-10 parts of glass bead and 8-10 parts of kieselguhr. The fire extinguishing agent has the advantages of high fire extinguishing efficiency, high moisture resistance, favorable after-combustion resistance, environment friendliness and simple production technique, and is suitable for various fire hazards.

The invention discloses a preparation method of an aqueous fluorine-modified phosphorus-containing acrylate emulsion. The preparation method comprises the steps of firstly preparing a pre-emulsion, then preparing a seed emulsion, and carrying out emulsion polymerization, so as to obtain the milky-white and slightly-blue aqueous fluorine-modified phosphorus-containing acrylate emulsion. According to the preparation method, a phosphate emulsifier is taken as an anionic emulsifier, meanwhile, phosphate is added as a functional monomer, phosphate groups are intruded into the emulsion, so that the emulsion has the characteristics of fine granularity and flash rusting resistance, and a coating has high adhesive force and certain salt water resistance; by adding a fluorine-containing modified monomer having good effects in the reduction of surface free energy and the improvement of surface dewatering and oleophobic performance, the water resistance of the coating of the emulsion is enhanced, and the pollution resistance of the coating of the emulsion is improved; meanwhile, the utilized fluorine-containing modified monomer is a fluorine-containing acrylic monomer, so that the problems of environment friendliness and biological harm of a long-fluorocarbon-chain compound are avoided, and the prepared emulsion is environmental friendly; the utilized nonionic emulsifier does not contain APEO (alkylphenol ethoxylate) and is environmental friendly.

The invention discloses modified polysilazane paint as well as a preparation method and application method thereof. The modified polysilazane paint is prepared from the following raw materials in parts by weight: 5 to 50 percent of polysilazane, 1 to 30 percent of isocyanate and 20 to 94 percent of organic solvent. The modified polysilazane paint is obtained by modifying the polysilazane via the isocyanate, has good hydrophobic and oleophobic performance, flexibility and binding performance, has good high temperature resistance, abrasion and weather resistance and corrosion resistance, and is long in service life; and the paint is smeared onto a basic material to be cured into a coating at a high temperature without humidity, and the coating has low surface energy and good hydrophobic and oleophobic performance.