Organo Bifunctional Silane Effects on the Vibration, Thermal, and Mechanical Properties of a Vinyl-Group-Containing Silicone Rubber/Natural Rubber/Silica Compound

A bifunctional silane (TESPD) was added to a vinyl-group-containing silicone rubber (SR)/natural rubber (NR)/silica compound, and the resulting mechanical, morphological, and thermal properties were compared with those of an NR/silica compound. The addition of TESPD to the silica-filled SR/NR compound formed an SR-silane-silica-silane-NR structure that behaved as a ter-polymer. The addition of SR into the NR improved the mechanical properties (torque maximum, modulus, elongation at break, and hardness) and thermal properties as well as the tan 5 values. The SR-silane-silica-silane-NR structure exhibited advanced properties that are suitable for an automotive engine mount application, which requires good thermal and vibration absorption properties. J. VINYL ADDIT. TECHNOL., 16:254260, 2010. (C) 2010 Society of Plastics Engineers