A study on the conductive critical behavior of Carbon black-polymer Composites

Carbon black-Polymer 복합재료의 전도임계 현상에 대한 고찰

The variation electrical resistivity of Carbon black filled polymers with volume percent of carbon black was investigated. The relationships between the surface tension of polymer and dispertion effect of carbon black were studied to find the steep drop of electrical resistivity. The critical volume percent of carbon black increased with the increasing surface tension of polymer. The PTC intensity decreased with the increasing volume percent of carbon black.