Graphene/room temperature vulcanized(RTV)silicone rubber nanocomposites were fabricated by ultrasonication and mechanical blending.The effects of graphene content on the mechanical properties and fracture morphologies of composites were investigated by SEM,TEM,FT-IR,Raman and XRD.The results indicate that that the tensile of the graphene/RTV silicone rubber composites increases first and then decreases with the increasing of graphene addition.When the mass frction of graphene is 0.925%,the tensile strength ...