Fluorosilicone oil has trifluoropropyl groups introduced into the silicon atoms. In addition to the basic characteristics of methyl silicone oil, it also has excellent oil resistance, solvent resistance, and chemical stability. It has good lubricity under extreme pressure conditions and can be used as a lubrication agent. Agents, defoaming agents, surface treatment agents, release agents and additives are widely used in cosmetics, petroleum, leather, paper and pharmaceutical fields. In open systems, it can be used in the temperature range of -40-240℃.
used as lubricant
Fluorosilicone oil can form a molecular assembly film with an outer chemical composition of -CF3 and high hydrophobic and oleophobic properties through chemical adsorption on the surface of the substrate, which can greatly reduce the friction coefficient of the substrate.
When trifluoropropyl silicone oil is used as a grease base oil, it can significantly improve the lubricity between steel and steel boundaries; for the watch industry and micromachining industry, since the surface energy of this type of compound can be as low as 20mN/m, it can Reduces the surface friction coefficient and can also be used as an advanced lubricant. Lubricants formulated from fluorosilicone oil, perfluoropolyether, polyphenylene ether, etc. are used for the lubrication of record drives, laser printers and other electronic machinery. They can continuously withstand high temperatures above 121°C and operate at high rotational speeds of 1.4 million per minute. Does not decompose and ensures reliable performance of lubricated objects.
typical application:
1. Vacuum pump lubricating oil used to handle chemical reaction gases;
2. Can be used for lubrication of bearings in extremely low temperature and extremely high temperature environments;
3. Chemically inert to fuels and other chemicals, used in steam power cycle systems;
4. Base oil used to thicken grease;
5. Grease base oil for the watch industry and micro-mechanical industry.
Used as surface treatment agent for fabrics, leather, paper, etc.
Fluorosilicone oil is often used for waterproofing and anti-fouling finishing of fabrics, leather, etc. and is oil-repellent and solvent-repellent. Generally speaking, an alkyl chain containing 8-10 perfluorocarbon atoms can achieve maximum waterproof and oil-repellent effect. For fluorosilicone polymers with the same number of carbon atoms, the water and oil repellency of linear chains is more effective than that of branched chains.
1. Fluorosilicone oil containing heptafluoroisopropoxypropyl (or ethyl) side chain. Its unique T-shaped fluorine-containing structure gives the product a good fluorine shielding effect. It can greatly improve the water and oil repellency of fabrics when used for fabric finishing. , anti-fouling performance;
2. Fluorosilicone oil prepared from mercapto silicone oil and fluorine-containing monomers (such as fluoroacrylate) can improve its oil-proof properties when used in textiles, especially fiber products;
3. The fluorosilicone oil obtained by reacting allylsiloxane and fluorine-containing thiol in the presence of AIBN at 100℃-105℃ is used for finishing cotton fabrics. The finished fabrics still have good properties after dry cleaning and wet cleaning. Waterproof and oil repellent effect;
4. Use perfluoroolefin, hydroxyl silicone oil, ethylene oxide, and diisocyanate as raw materials to synthesize fluorosilicone-modified polyurethane waterproof and oil-proof finishing agent, which can be used for waterproof and oil-proof finishing of fabrics, leather and other fiber fabrics, giving it excellent Waterproof, oil-proof, and increased softness, slipperiness and elasticity;
5. Fluorosilicone oil is obtained by polymerizing macromolecular hydrogen-containing silicone oil and fluorine-containing olefins under a catalyst. The fluorine content in the polymer can be controlled, and it can be widely used for waterproof and oil-proof treatment on the surfaces of textiles, paper, metal, glass, ceramics, etc. Release agents for plastics and rubber and drag reducing agents for water and oil pipelines;
6. Glass wool impregnated with fluorosilicone oil has good waterproof, oil-proof and corrosion resistance properties. It is used in chlor-alkali industrial demisters with significant dehydration efficiency, reducing equipment corrosion and extending the service life of the demister. Extend and improve the quality of liquid chlorine and hydrogen chloride;
7. A solvent-based product formulated with alkenyl-containing fluorosilicone oil as the base polymer, which can be used as a stripper and has good adhesion to various substrates (paper, plastic films);
8. Mix fluorosilicone oil, amino silicone oil, epoxy silicone oil, polyether silicone oil, cationic/nonionic mixed surfactant and deionized water at 56℃-60℃ for 3h-5h to make an oil agent for carbon fiber drawing production. During the process, the oil evenly forms a film on the surface of the monofilaments, which can not only prevent the adhesion and doubling of the monofilaments, but also prevent the friction and wear between the fiber surface and the roller during the production process, and has excellent smoothness and antistatic properties. , clustering and self-emulsifying properties.
Used as paint additive
Fluorine-containing silicone oil coatings have properties such as hydrophobic, oil-repellent, solvent-resistant, and weather-resistant. It is used in antifouling coatings for marine ships, and its performance is better than that of silicone self-polishing coatings, providing a new way to develop antifouling coatings for ship bottoms; it is used in protective coatings for solar energy devices in desert areas, which can take advantage of its low surface energy, It has the advantage of self-cleaning; because of its low friction in film formation, it is used as a lubricating and protective coating for magnetic recording media and as a protective coating for the lenses of some optical instruments and equipment, such as cameras and cameras.
Coatings formulated from hydroxyl-containing fluorosilicone oil, small molecule siloxane, nano-silica, decabromodiphenylethane, etc., have excellent flame retardancy, solvent resistance, oil resistance, high and low temperature resistance and good With excellent self-cleaning properties, the coating surface is smoother, can be formed into a film at one time, and has a service life of more than 20 years. Copolymerize fluorine-containing (meth)acrylate, alkenyl alkoxy-containing organosilane, and vinyl monomers, and the resulting product is developed into a water-based coating of fluorine-containing silicone copolymer, which has excellent adhesion to various substrates. , its coating has excellent acid resistance, alkali resistance and durability.
Used as defoaming agent
Since the surface tension of fluorocarbon-based silicone oil, especially long-chain perfluoroalkyl silicone oil, is lower than that of other silicone oils, the defoaming agent formulated with it is more effective in reducing the surface tension of various foaming systems and is better than other silicone oil defoaming agents. Foaming agent. Both homopolymer and copolymer fluorocarbon-based silicone oils can be used as defoaming agents. Fluorosilicone oil defoaming agents can be used in petroleum, textile, synthetic rubber and resin industries, coating and ink industries, food processing and fermentation industries, and medical applications.
Application of fluorosilicone oil secondary products
Fluorosilicone grease, fluorosilicone paste
Fluorocarbon-based silicone oil can be used as base oil, and fluorosilicone grease and fluorosilicone paste can be prepared by adding thickeners, stabilizers and modifying additives. When trifluoropropyl silicone oil is used as a grease base oil, the steel-to-steel boundary lubricity can be significantly improved. It can be used alone or mixed with dimethyl silicone oil or methylphenyl silicone oil. Its lubricity is significantly better than chlorophenyl silicone oil, and even better than mineral oil grease under high load. Thickeners can be divided into lithium soap series (fluorosilicone grease) or white carbon black and silicone resin (fluorosilicone paste) based on product form. The crude product obtained by mixing the base oil, thickener and modifying additives must be moved to a three-roller machine for further grinding to obtain a uniform fluorosilicone grease or fluorosilicone paste that does not contain coarse particle thickeners or modifying additives. .
Fluorosilicone grease is suitable for temperatures ranging from -70 to 252°C. It can be used for the lubrication of high-speed, heavy-duty bearings that are in contact with chemical reagents, and the lubrication and sealing of valves that are in contact with corrosive compounds. Fluorosilicone paste can be used as high vacuum silicone paste and can be used to lubricate and seal parts that come into contact with benzene solvents.
Fluorosilicone release agent
Fluorosilicone oil can also be used to prepare release agents. It has good anti-sticking and lubricity, does not corrode molds, and can be used in processes such as molding, pouring, packaging and coating. Emulsion-type or solvent-free products formulated with fluorosilicone oil as the base polymer can be used as paper release agents.
Vinyl fluorosilicone oil