Studies on thermal and morphological characteristics of bismaleimides modified polysulfone epoxy networks

摘要

The effect of incorporation of bismaleimides and bisphenol - A based polysulfone (PSF) into epoxy has been studied. The formulated matrices were characterized in terms of FTIR, DSC, TGA, HDT, thermal ageing characteristics, SEM and water absorption behaviour. The incorporation of both polysulfone and bismaleimide into epoxy resin enhances the glass transition temperature and thermal degradation temperature according to their percentage content. Among the bismaleimides modified polysulfone epoxy systems, BMI-2 modified PS-epoxy systems exhibit better thermal properties than that of other two bismaleimides. SEM analysis showed a homogeneous morphology that would lead to the conclusion of the existence of interpenetrating network.