Effect of sulfur on the electrical conductivity of FEF‐loaded SBR during swelling

Following a series of experiments on the effect of different factors of the electrical conductivity of carbon‐black‐loaded styrene butadiene rubber, an attempt was made to study the effect on electrical conduction of changing the sulfur content. It was found that an optimum sulfur content leads to a swelling‐resistant composite with good electrical insulation. This was done for dry as well as wet specimens of rubber.