2D-3D collaborative network based on conductive sponge and flake graphite to design high performance silicone rubber composites

摘要

The construction of a three-dimensional (3D) conductive network is a potent approach to achieving high electrical and thermal conductivity of silicone rubber at low filler content. In this work, silicone rubber composites with high performance were prepared by constructing a 2D-3D collaborative network structure in a matrix. The results indicate that there is a strong interfacial interaction between flake graphites (FGs), conductive sponges (CSs), and silicone rubber. With the addition of FG and CS, the thermal and electrical conductivities of silicone rubber composites increase of 0.51 W/m center dot K and 52 S/m, which were 320 and 13 orders of magnitude higher than that of pure silicone rubber, respectively. The silicone rubber composites also display good thermal stability and mechanical properties. Hence, this research provides a new paradigm for achieving high-performance silicone rubber.