Silicone oil: silicone oil is generally colorless (or pale yellow), odorless, non-toxic (in recent years, the survey found that this substance is harmful to the human body), the less volatile liquid. The silicone oil is not soluble in water, with the segment number n of different molecular weight increases, the viscosity also increased, solid silicone oil can have a variety of different viscosity from 0.65 centistokes until millions centistokes. If you want the system to have a low viscosity silicone oil, for availability of acidic clay as a catalyst, and a temperature of 180 ° C to carry out the telomerization, or with sulfuric acid as a catalyst, carried out at low temperature telomerization, the production of high-viscosity silicone oil or viscous material available alkaline catalyst. The silicone oil has excellent heat resistance, electrical insulation, weather resistance, hydrophobicity, physiologically inert, and a smaller surface tension, in addition to having a low viscosity-temperature coefficient, high compression resistance) also has some varieties resistant to radiation performance.