(1) Silicone rubber is a raw rubber with high saturation, and usually cannot be vulcanized with sulfur, but hot vulcanized. Thermal vulcanization uses organic peroxide as vulcanizing agent, so the compound must not contain active substances that can interact with peroxide decomposition products, otherwise it will affect vulcanization.

(2) Silicone rubber products are generally used at high temperatures, and their compounding agents should be stable at high temperatures. For this reason, inorganic oxides are usually used as reinforcing agents.

(3) Silicone rubber can easily cause cleavage and rearrangement of siloxane bonds under the action of a small amount of polar chemical reagents such as acids or bases, resulting in a reduction in the heat resistance of silicone rubber. Therefore, they must be considered when selecting compounding agents. The acidity and alkalinity of the vulcanizate should also be considered, so as not to affect the performance of the vulcanizate.