Silicone oil

Silicone oil is a polyorganosiloxane with a different polymerization degree chain structure. It is formed by dimethyl dichloride silane hydrolysis water was condensed ring body, at the beginning of the ring body through pyrolysis and distillation was low ring body, and then put the ring body, head agent, catalyst with tips can be a mixture of different degree of polymerization, the vacuum distillation to remove silicone oil can be obtained from the lower boiling.

Silicone oil by chemical structure to score ethyl methyl silicone oil, silicone oil, phenyl silicone oil, methyl hydrogen silicone oil, dimethyl silicone oil, silicone oil methyl benzene group and methyl ethoxy silicone oil, methyl propyl three fluorine silicone oil, methyl vinyl silicone oil, methyl hydroxy ethyl hydrogen silicone oil, silicone oil, hydroxyl silicone oil containing hydrogen cyanide silicone oil, etc.; From the purpose, there are damping silicone oil, diffusion pump silicone oil, hydraulic oil, insulating oil, heat transfer oil, brake oil and so on.

Silicone oil has excellent heat resistance, electrical insulation, weather resistance, hydrophobic, physiological inertia and smaller surface tension, moreover also has low compressibility) viscosity-temperature coefficient, high resistance to some varieties have radiation resistant performance.

C. silicone rubber

Silicon rubber is the main chain consisting of silicon and oxygen atoms, and the silicon atoms usually have two organic groups of rubber. Ordinary silicone rubber consists mainly of methyl and a small amount of vinyl. The introduction of phenyl can improve the high and low temperature performance of silicone rubber, and the introduction of trifluoropropyl and cyanotype can improve the temperature resistance and oil resistance of silicone rubber. Silicone rubber good low temperature resistance, generally can still work under 55 ℃. After the introduction of phenyl, can reach to 73 ℃. Heat resistant properties of the silicone rubber is very outstanding, also can long-term work under 180 ℃, slightly higher than 200 ℃ can take several weeks or longer still resilient, instantaneous can resistance to high temperature above 300 ℃. The permeability of silicone rubber is good, and the oxygen penetration rate is the highest in the synthetic polymer. In addition, silicone rubber also has the physiological inertia, does not lead to the prominent characteristics of coagulation, so it is widely used in the medical field.