Dielectric Properties of Styrene—Butadiene Rubber/Silicon Dioxide Mixtures

Abstract

Abstract The dielectric constant ϵ′ and dielectric loss ϵ″ have been investigated for SBR samples vulcanized with TMTD and loaded with silica in increasing quantities in the frequency range from 60 Hz to 10 8 Hz at room temperature. Also, the physico‐mechanical properties of these samples have been investigated. The results of ϵ′ and ϵ″ are analysed using the Cole—Cole method. Two absorption regions are found: a low frequency absorption region with a maximum at about 10 kHz which is attributed to Maxwell—Wagner effect and a high frequency absorption region with a maximum at 10 7 Hz which is due to the orientation of polar groups. A third absorption region appeared at frequencies below 100 Hz and may be due to absorption of moisture arising from the presence of silica in the sample.