HIGHLY DAMPING EXPANDABLE MATERIAL AND DEVICES

摘要

A thermally expandable material comprising a first thermoplastic elastomer having a first glass transition temperature, a second thermoplastic elastomer having a second glass transition temperature, wherein the first and the second glass transition temperature differ by at least 10° C.; at least one thermoplastic polymer selected from the group consisting of polymers and copolymers with at least one polymerizable C═C double bond, optionally at least one tackifying resin, at least one latent chemical blowing agent in an amount effective to cause the expandable material to expand at least 50% in volume when heated.