1. silicone rubber: the main chain consists of silicon atoms and oxygen atoms alternately, and two organic groups are usually connected to the silicon atom.

2. Silica gel: It is a high-activity adsorption material, belonging to amorphous substances.

Second, the characteristics are different.

1, silicone rubber: silicone rubber has good low temperature resistance and can still work at -55℃; Silicone rubber has good air permeability and the highest oxygen permeability among synthetic polymers.

2. Silica gel: Silica gel has strong adsorption capacity and can dry human skin. Therefore, work clothes should be worn when operating. If silica gel enters the eyes, it should be washed with plenty of water and treated by a doctor as soon as possible.

Third, the composition is different.

1, silicone rubber: It is mainly composed of methyl siloxane chain and a small amount of vinyl. The introduction of phenyl can improve the high and low temperature resistance of silicone rubber, and the introduction of trifluoropropyl and cyano can improve the temperature resistance and oil resistance of silicone rubber.

2. Silica gel: The main component of silica gel is silica.

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