Abstract
The influence of static and cyclic compression on the temperature dependence of the electrical conductivity σ(T) of 100 phr FEF black-loaded rubber vulcanizates (SBR, NR, IIR, BR and NBR) has been studied. It was found that σ increases with static pressure for all rubber vulcanizates. The temperature coefficient of conductivity proved to be negative; its maximum value α ranges between −0.1 and −0.01 deg−1 depending upon the applied stress and type of rubber vulcanizate. The pressure coefficient of conductivity γ at room temperature varies with the static pressure from 0.78 to 0.04 (kg/cm2)−1. Menwhile, a was found to decrease with the number and stress amplitude of the cyclic compressions, while α increases with the number of compression cycles.
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