siliconeperoxide

Silicone peroxide refers to silicone-based polymers that contain peroxide groups within their molecular structure. These peroxide functionalities are typically incorporated to enable cross-linking reactions, which transform liquid or uncured silicone into a solid, thermoset elastomer. The process of cross-linking via peroxides is often referred to as peroxide curing or vulcanization.

Peroxide-cured silicones are known for their excellent thermal stability, resistance to oils and chemicals, and good mechanical properties. The peroxide decomposes at elevated temperatures, generating free radicals that abstract hydrogen atoms from the silicone polymer chains. These radicals then combine, forming strong carbon-carbon cross-links between the polymer chains, creating a stable three-dimensional network. This cross-linking mechanism is distinct from other curing methods like condensation cure or platinum-catalyzed addition cure.

The specific type of peroxide used can influence the curing conditions and the properties of the final product. Common peroxides employed include organic peroxides such as dicumyl peroxide or benzoyl peroxide. Silicone peroxides find applications in various industries, including automotive, aerospace, electronics, and healthcare, where their high-performance characteristics are advantageous. Examples include seals, gaskets, tubing, and encapsulants.