Development of Stiff, Tough and Conductive Composites by the Addition of Graphene Nanoplatelets to Polyethersulfone/Epoxy Composites.

摘要: In this study, polyethersulfone (PES) was blended into epoxy resins to improve the fracture toughness of resin without loss mechanical properties, and then two grades pristine graphene nanoplatelets (GnPs) were separately introduced PES/epoxy system fabricate thermally conductive GnPs/PES/epoxy composites with high as well stiffness. It observed that addition GnPs obviously affected final phase morphology by suppressing separation process PES modified due increased viscosity cure-reaction rate PES/epoxy. The a larger lateral dimension revealed greater reinforcing effect, inclusion 3 wt % (~5 μm in diameter) endowed matrix good thermal conductivity improved tensile, flexural, storage modulus 27.1%, 17.5%, 15.6% (at 30 °С), respectively. Meanwhile, further enhanced about 29.5% relative at same concentration. positive results suggest modification using is an attractive approach for fabricating tougher stiffer epoxy-based nanocomposites multifunctional which could widen industrial applications resins.