Abstract
Current–voltage characteristics of samples of butyl rubber loaded with two different types of carbon black have been studied at different temperatures in the voltage range 10–3 KV. The conduction mechanism was found to follow the conventional band approach followed by the hopping model for isobutylene isoprene rubber (IIR) mixed with 40 phr of fast‐extrusion furnace black (FEF) carbon black and the hopping model for IIR mixed with 50 phr of semireinforcing furnace black (SRF) carbon black. © 1992 John Wiley & Sons, Inc.

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