THERMALLY EXPANSIBLE MATERIAL

摘要

A thermally expansible material includes an epoxy resin; a plurality of thermoplastic polymers, wherein at least one thermoplastic polymer includes at least one chemical moiety capable of reacting with said epoxy resin; and a heat-activated blowing agent. The thermally expansible material is substantially free of a tackifier, and the material is adhereable to a substrate during expansion. A baffling material following expansion is also provided.