Additive formed liquid silicone rubber is based on linear polydimethylsiloxane containing vinyl groups as the base polymer, and oligomeric siloxane containing silicon hydrogen bonds as the vulcanizing crosslinking agent. In the presence of a catalyst at room temperature to medium temperature, an elastic body with a network structure is formed through addition reaction. The principle is that a silicone rubber is formed by the hydrogenation addition reaction of siloxane containing vinyl groups and polydimethylsiloxane with multifunctional Si-H bond side groups (or end groups) catalyzed by Group 8 transition metal compounds (such as Pt, etc.), resulting in chain growth and cross-linking to form new Si-C bonds.

Additive formed liquid silicone rubber is usually composed of base polymers, crosslinking agents, inhibitors, catalysts, fillers, and other additives. Due to the theoretical absence of low molecular weight by-products during the hydrogenation crosslinking process and its high conversion rate, additive formed liquid silicone rubber does not shrink, is non-toxic, and has high mechanical strength during the sulfurization process. It has excellent resistance to hydrolysis stability (even in high-pressure steam), good low-pressure shrinkage deformation, low flammability, deep solidification, easy control of crosslinking density, temperature control of vulcanization rate, and no corrosion to the materials in contact.

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