Silicone rubber refers to rubber whose backbone is composed of alternating silicon and oxygen atoms, and two organic groups are usually attached to the silicon atoms. Ordinary silicone rubber is mainly composed of silicon-oxygen links containing methyl groups and a small amount of vinyl. The introduction of phenyl group can improve the high and low temperature resistance of silicone rubber, and the introduction of trifluoropropyl and cyano groups can improve the temperature and oil resistance of silicone rubber.

Silicone rubber has good low temperature resistance and can still work at -55°C. After the introduction of phenyl group, it can reach -73 °C. Silicone rubber also has outstanding heat resistance, it can work for a long time at 180°C, can withstand several weeks or more at slightly higher than 200°C, and can withstand high temperatures above 300°C instantaneously. Silicone rubber has good air permeability and the highest oxygen permeability rate among synthetic polymers. In addition, silicone rubber has the outstanding property of being physiologically inert and does not cause blood clotting, so it is widely used in the medical field.

Classify
Silicone rubber can be divided into hot vulcanization type (high temperature vulcanized silica gel HTV) and room temperature vulcanization type (RTV) according to its vulcanization mechanism, among which the room temperature vulcanization type is divided into polycondensation reaction type and addition reaction type. High-temperature silicone rubber is mainly used to manufacture various silicone rubber products, while room temperature silicone rubber is mainly used as adhesives, potting materials or molds.

The hot vulcanized type is the largest, and the hot vulcanized type is divided into methyl silicone rubber (MQ), methyl vinyl silicone rubber (VMQ, the most dosage and product grade), methyl vinyl phenyl silicone rubber PVMQ (low temperature resistance, radiation resistance), and other eye silicone rubber, fluorine silicone rubber, etc.

About injection liquid silicone rubber,please check the details: High Strengh Liquid Silicone Rubber IOTA 28-Series
About fluorosilicone rubber,please check the details: Fluoro Silicone Gum (IOTA 110-F series)
About ethyl silicone oil,please check the details: Polyethylsiloxane Fluids IOTA 2056 PESAbout leather silicone rubber,please check : IOTA Liquid silicone rubber for silicone leather