Role of Fillers on Dispersion of MWCNT/Fluoroelastomeric Composites for High Performance Dielectric Energy Storage Application

摘要

Halloysite nanotube (HNT) and clay are introduced into multi-walled carbon nanotube (MWCNT)/fluoroelastomer (FKM) composites to improve electrical conductivity without harming mechanical and thermal properties. Hence, it has been achieved by combining the fillers (HNT and clay) with MWCNT which restricts the agglomeration of MWCNT in the matrix and allows the uniform dispersion. With just 2 wt% HNT and Clay, electrical conductivity is increased by more than four orders of magnitude (from 10(-8) to 10(-4) S/cnn). Furthermore, the percolation threshold of these nanocomposites is reduced with the addition of 2 wt% HNT and clay. MWCNTs appear to have an affinity for clay that causes them to become more exfoliated in these composites. This HNT/clay-nanotube synergy may make these composites better suited for high electrical properties along with high mechanical and thermal applications.