Modified layered clay material and epoxy/clay nanocomposite containing the same

摘要

A layered clay material is modified by ion exchange with (1) ZrOCl₂ and (2) a silane surfactant. The modified clay material is heat-kneaded with epoxy oligomers to undergo polymerization, thus obtaining an epoxy/clay composite comprising the clay material uniformly dispersed in the epoxy resin matrix on a nano-scale. The epoxy/clay nanocomposite has excellent adhesion and less hygroscopicity, which makes it especially suitable as molding or packaging material for electronic devices.