HIGH DAMPING COMPOSITION

摘要

PURPOSE: A highly damping composition is provided to reduce the elasticity thereof without reducing the size of a viscoelastic damper by forming a highly damping element with low rigidity. CONSTITUTION: A highly damping composition is formed by mixing a silica and surface-treated calcium carbonate into a P-based rubber as a base polymer. The mixing ratio of the silica and surface-treated calcium carbonate is 100-160 parts by weight per 100 parts by weight of a diene-based rubber. The ratio of the surface-treated calcium carbonate in the total weight of the silica and surface-treated calcium carbonate is 10-50 weight%. The surface-treated calcium carbonate is surface-treated by rosin acid or aliphatic acid.