The classification of silicone rubber is mainly based on its vulcanization mechanism, chemical composition, and characteristics. From the perspective of vulcanization mechanism, hot vulcanized silicone rubber requires high temperature heating and the use of organic peroxides for vulcanization, which is suitable for high temperature resistance and high elasticity scenarios in traditional coating processes.
Room temperature vulcanized silicone rubber can be cured at room temperature. The condensation reaction type is suitable for small-scale coating or bonding, while the addition reaction type is driven by platinum catalyst and rapidly cured at low temperatures. It is commonly used for precision electronic coating. Addition reaction silicone rubber is a two-component liquid that solidifies through the reaction of silane and vinyl, suitable for liquid coating or injection molding.
According to its chemical composition and characteristics, dimethyl silicone rubber is the earliest commercialized variety, with a temperature resistance range of -60 β to 250 β. However, due to its low vulcanization activity, it is currently mainly used for fabric coating. Methyl vinyl silicone rubber improves heat resistance and processability by introducing vinyl, and is the most widely used type, including universal, high-strength, and low compression permanent deformation types.
Phenyl silicone rubber is divided into low, medium, and high phenyl types. The low phenyl type has excellent low-temperature resistance, the medium phenyl type has flame resistance, and the high phenyl type is radiation resistant. Fluorosilicone rubber introduces trifluoropropyl, which has the characteristics of oil resistance, solvent resistance, and chemical corrosion resistance, and is suitable for coating fuel systems and chemical equipment.
Regarding the coating of silicone rubber, please refer to the details:
IOTA Coating Liquid Silicone Rubber
