Silicone oil is generally colorless (or light yellow), tasteless, non-toxic (in recent years, the investigation found that this matter is harmful to human body), not volatile liquid.Silicone oil is insoluble in water, methanol, diol and -ethoxy ethanol, and can be mutually soluble with benzene, dimethyl ether, methyl ethyl ketone, carbon tetrachloride or kerosene, slightly soluble in acetone, dioxane, ethanol and alcohol.It has very small vapor pressure, high flash point and flash point, low freezing point.The molecular weight increases and the viscosity increases with the number of chain segments n. The siloxane can produce a wide range of viscosities from 16.25px to millions of centistokes.If you want to make low viscosity silicone oil, you can use acid clay as a catalyst, and at 180℃ temperature for polymerization, or use sulfuric acid as a catalyst, at low temperature for polymerization, production of high viscosity silicone oil or viscous substance can be used alkaline catalyst.
According to the chemical structure of silicone oil is divided into methyl silicone oil, ethyl silicone oil, phenyl silicone oil, methyl hydrogen silicone oil, methyl phenyl silicone oil, methyl chlorophenyl silicone oil, methyl ethoxy silicone oil, methyl trifluoropropyl silicone oil, methyl vinyl silicone oil, methyl hydroxyl silicone oil, ethyl hydrogen silicone oil, hydroxyl hydrogen silicone oil, cyanide silicone oil, etc.;From the point of use, there are damping silicone oil, diffusion pump silicone oil, hydraulic oil, insulation oil, heat transfer oil, brake oil and so on.
Silicone oil has excellent heat resistance, electrical insulation, weather resistance, hydrophobicity, physiological inertia and small surface tension, in addition to the low viscosity temperature coefficient, high compressive resistance) some varieties also have radiation resistance.
Silicone oil has a wide range of applications.It is not only used as special materials in aviation, cutting-edge technology and military technology departments, but also used in various sectors of the national economy. Its application scope has been expanded to: construction, electronic and electrical, textile, automobile, machinery, leather and paper making, chemical and light industry, metal and paint, medicine and medical treatment and so on.
The main applications of silicone oil and its derivatives are: film removal agent, shock absorption oil, dielectric oil, hydraulic oil, heat transfer oil, diffusion pump oil, defoaming agent, lubricant, hydrophobic agent, paint additives, polishing agent, cosmetics and daily necessities additives, surfactants, particles and fiber treatment agent, silicone grease, flocculant.
Silicone rubber is divided into room temperature vulcanized silicone rubber and high temperature vulcanized silicone rubber.The former is mainly used in: sealants, adhesives, conformal coatings, gaskets, foam rubber, molded parts, packaging materials, electrical insulation, glass assembly, medical implants, surgical auxiliary materials, molding materials;The latter is mainly used in: steel tubes and hoses, strip, wire and cable insulation materials, surgical auxiliary materials, flame retardant rubber pieces, penetrating sealing material, moulding parts, embossing roller, auto ignition, cable and plug cover, extrusion parts, medical implants, laminated products, conductive rubber, fiber coating, foam rubber.
