Silicone rubber refers to the main chain is alternately composed of silicon and oxygen atoms, silicon atoms are usually connected with two organic groups of rubber. Silicone rubber has good low temperature resistance and can generally work at -55 ° C. After the introduction of phenyl, it can reach -73℃. The heat resistance of silicone rubber is also very prominent, can work for a long time at 180 ° C, slightly higher than 200 ° C can also withstand a few weeks or longer is still elastic, instantaneous resistance to high temperatures above 300 ° C. The gas permeability of silicone rubber is good, and the oxygen permeability is the highest in the synthetic polymer. In addition, silicone rubber also has the outstanding characteristics of physiological inertia and does not cause coagulation, and the application field is relatively wide.
