When designing the formula, raw rubber with different characteristics should be selected based on the performance and usage conditions of the product. Ethylene based silicone rubber can be used for general silicone rubber products that require a temperature range of -70 ℃ to 250 ℃; When the temperature requirement for product use is high (-90~300 ℃), low phenyl silicone rubber can be used; When the product requires high and low temperature resistance as well as fuel or solvent resistance, fluorosilicone rubber should be used.

The vulcanizing agents used for hot vulcanized silicone rubber mainly include organic peroxides, aliphatic azo compounds, inorganic compounds, high-energy radiation, etc. Among them, the most commonly used are organic peroxides. This is because organic peroxides are generally stable at room temperature, but can rapidly decompose and produce free radicals at higher vulcanization temperatures, thereby crosslinking silicone rubber.

Peroxides can be divided into two categories based on their activity. One type is the universal type, which has high activity and can cure various silicone rubbers; The other type is ethylene based special type, which has lower activity and can only vulcanize silicone rubber containing ethylene groups.

About injection liquid silicone rubber,please check the details: High Strengh Liquid Silicone Rubber IOTA 28-Series