NEW OLIGOMERIC AMIC ACID AND POLYIMIDE NANOCOMPOSITES CONTAINING ORGANOPHILIC LAYERED SILICATES MODIFIED THEREFROM

摘要

The present invention relates to novel in the amic acid oligomer with as it relates to a polyimide nanocomposite material by containing a modified organophilic layered silicate is used, more particularly, to a flexible side chain is introduced into a diamine derivative with an aliphatic or aromatic tetracarboxylic acid dianhydride this polymerized the amine group introduced at the terminal novel amic acid oligomer, and the amic acid the organophilic layered modified with a cation exchange reaction with oligomeric silicates with, and nano the organophilic layered silicate and the polyimide-based resin or precursor thereof the composite is stable to heat, such as thermal properties and coefficient of thermal expansion to an improved polyimide nanocomposites. ; The amine group was introduced at the terminal amic acid oligomer, a organophilic layered silicate, polyimide nanocomposites