Changing the percolation threshold of a carbon black/polymer composite by a coupling treatment of the black

摘要

It is well-known that a polymer composite filled with a conductive filler such as carbon black (CB) becomes electrically conductive once the volume fraction of CB exceeds a certain critical value;the so called percolation threshold [1].Moreover,the percolation threshold can be lowered by blending with immiscible polymers [2,3],optimizing the process conditions [3],and controlling the size distribution and porosity of the CB [4].