Silicone oil is a type of polyorganosiloxane with a chain like structure with different degrees of polymerization. It is made of Dimethyldichlorosilane by hydrolysis with water to obtain the primary polycondensation ring. The ring is cracked and rectified to obtain the low ring. Then the ring, capping agent and catalyst are put together for polymerization to obtain mixtures with different polymerization degrees. Silicon oil can be made by removing the low boiling matter through vacuum distillation.
The most commonly used silicone oil, the organic group is called silicone oil. Organic groups can also replace some methyl groups with other organic groups to improve the performance of silicone oil and be suitable for various purposes. Common other functional groups include hydrogen, chlorine, trifluoropropyl, etc. In recent years, organic modified silicone oil has developed rapidly, and many organic modified silicone oils with special properties have emerged.
Silicone oil is generally a colorless (or light yellow), transparent, and non volatile liquid. Silicone oil is insoluble in water, methanol, diol, and - ethoxyethanol, and can be miscible with benzene, dimethyl ether, carbon tetrachloride, or kerosene. It is slightly soluble in, dioxane, ethanol, and methanol. It has a very low vapor pressure, a high flash and ignition point, and a low freezing point. As the number of chain segments n increases, the molecular weight and viscosity also increase. This silicone oil can have various viscosities, ranging from 0.65 to millions of millimeters. If low viscosity silicone oil is to be prepared, acidic clay can be used as a catalyst and polymerized at 180 ℃, or sulfuric acid can be used as a catalyst and polymerized at low temperature to produce high viscosity silicone oil or viscous substances. Alkaline catalysts can be used.
Silicone oil can be divided into methyl silicone oil, ethyl silicone oil, phenyl silicone oil, methyl hydrogen containing silicone oil, methyl phenyl silicone oil, methyl chlorophenyl silicone oil, methyl ethoxy silicone oil, methyl trifluoropropyl silicone oil, methyl vinyl silicone oil, methyl hydroxy silicone oil, ethyl hydrogen containing silicone oil, hydroxyl hydrogen containing silicone oil, cyanide containing silicone oil, etc. according to their chemical structure; From the perspective of usage, there are lubricating silicone oil, oil bath silicone oil, damping silicone oil, diffusion pump silicone oil, hydraulic oil, insulation oil, heat transfer oil, brake oil, etc.
Silicone oil has excellent heat resistance, electrical insulation, weather resistance, hydrophobicity, physiological inertia and small surface tension. In addition, it has low viscosity temperature coefficient and high Compressibility resistance. Some varieties also have radiation resistance. Introduction to the Varieties and Uses of Silicone Oil Silicone oil is a type of polyorganosiloxane with different polymerization degree chain structures. It is made of Dimethyldichlorosilane by hydrolysis with water to obtain the primary polycondensation ring. The ring is cracked and rectified to obtain the low ring. Then the ring, capping agent and catalyst are put together for polymerization to obtain mixtures with different polymerization degrees. Silicon oil can be made by removing the low boiling matter through vacuum distillation.
The most commonly used silicone oil, with all organic groups being methyl, is called methyl silicone oil. Organic groups can also replace some methyl groups with other organic groups to improve the performance of silicone oil and be suitable for various purposes. Common other functional groups include hydrogen, ethyl, phenyl, chlorophenyl, trifluoropropyl, etc. In recent years, organic modified silicone oil has developed rapidly, and many organic modified silicone oils with special properties have emerged.
