Carbon fibers(CFs)/poly(trifluoroethyl methacrylate) (CFs/PTFEMA) composites were prepared by the in-situ radical polymerization of trifluoroethyl methacrylate with CFs under scCO2. SEM illustrated that the diameter of CFs was about 200-500 nm and CFs was well dispersed in composites. The results show that CFs strongly influences the properties of composite, especially the electrical properties and resistivity-temperature behaviors of composites. A low percolation threshold was obtained at CFs content of 12 wt%. The conductive network of the CFs/PTFEMA composites was formed by the contact of the CFs particles. Based on the special microstructure that the CFs was distributed at the surfaces of PTFEMA and the conductive network constructed by CFs, especially the distribution of conductive ?ller signi?cantly affects the properties of the CFs/PTFEMA composites materials. CFs was well dispersed in fluorinated polymers under the environmental friendly scCO2 solvent and CFs/PTFEMA can be a functional and structural material.

Synthesis of carbon fibers/poly(trifluoroethyl methacrylate) composites in supercritical carbon dioxide

243rd National Meeting (2012)

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