The use of a silicone oil -Iota

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Service > The use of a silicone oil

The use of a silicone oil

A different degree of polymerization of the silicone oil is a polyorganosiloxane chain structure. It is dimethyldichlorosilane water hydrolysis polycondensation First ring member, the ring member by the pyrolysis, distillation to obtain the low ring body, and then the ring member, the closure head, a catalyst can be put together to give the respective telomerization a mixture of different polymerization degree, by distillation under reduced pressure to remove low boiling substances can be prepared by the silicone oil.
The most common silicone oils, all organic groups are methyl, said silicone oil application. Organic groups can also be used to replace part of other organic groups methyl groups to improve certain properties of silicone oil, and for a variety of different purposes. Other common groups are hydrogen, ethyl, phenyl, chlorophenyl group, a trifluoromethyl group and the like. In recent years, the rapid development of organically modified silicone oil, there have been many organically modified silicone oil has special properties.
Silicone oil is generally a colorless (or pale yellow), odorless, non-toxic, non-volatile liquid. Silicone oil is insoluble in water, methanol, glycol, and - ethoxyethanol, with benzene, dimethyl ether, methyl ethyl ketone, carbon tetrachloride or kerosene miscible, slightly soluble in acetone, dioxane, ethanol, and the alcohol . It has a small vapor pressure, high flash point and ignition point, a low freezing point. As the number of segments n is different, the molecular weight increases, the viscosity increased, this solid silicone can have a variety of viscosities, from 0.65 up to a million centistokes cSt. If the system had a low viscosity silicone oil can be used as the acid clay catalyst, and at a temperature of telomerization 180 ℃, or sulfuric acid as a catalyst at a low temperature telomerization, to produce high-viscosity silicone oil or a viscous material with an alkaline catalyst.
The chemical structure of the silicone oil to be divided by the methyl silicone oil, ethyl silicone oil, phenyl silicone oil, methyl hydrogen silicone oil, methylphenyl silicone oil, methyl chlorophenyl silicone oil, silicone oil, methyl ethoxy, methyl trifluoropropyl silicone oil, methyl vinyl silicone oil, methyl hydroxy silicone oil, ethyl hydrogen silicone, hydroxyl hydrogen silicone oil, silicone oil containing cyanide; from the use of points, then the damping silicone oil diffusion pump oil, hydraulic oil, insulating oil, heat transfer oil, brake oil.
Silicone has excellent heat resistance, electrical insulation, weather resistance, hydrophobicity, physiologically inert and smaller surface tension, also has a low viscosity-temperature coefficient, high resistance to compression) and some species also resistant to radiation performance.

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