Strong nanocomposites reinforcement effects in PTFE/glass fabric composites modified with graphene

Inspired by the highly ordered structure and excellent mechanical performance of nacre, surface functionalization of graphene (GE) has been prepared, polytetrafluoroethylene (PTFE)/glass fabric (GF) composites modified by introducing the GE and in vertical immersion method. The results show the negatively charged poly(sodium-p-styrenesulfonate) coat on the GE and prevent aggregation, and thus form stable dispersions. The tensile strength and toughness of PTFE/GF composites achieve the maximal value of 25.1 MPa and 20.2 MJ/m3, respectively, as well as the surface resistivity achieve the minimum value of 1000 Ω cm. With the incorporation of GE, the mechanical properties and electrical conductivity of PTFE/GF composites improve significantly. Moreover, modified GE further increases the properties of PTFE/GF composites. Modified GE shows better dispersion effect than pure GE.