Silica-rubber mixtures having improved hardness

摘要

A method for increasing the hardness of silica/rubber mixtures includes blending with the mixture at least one silane and a hardness-increasing amount of at least one member selected from the group consisting of thixotropic fumed silica, precipitated silica and an MQ resin, wherein Q is SiO_4/2, M is R¹R²R³SiO_1/2, and R¹,R²,and R³ are the same or different functional or non-functional organic groups, carbon black, a thermoplastic resin or a thermosetting resin.