Temperature and Frequency Dependence of the Complex Permittivity of Butyl Rubber Filled with Silica

摘要

A systematic dielectric study over a frequency range from 10~3 Hz to 10~7 Hz was carried out on butyl rubber mixed with SiO_2.The wide tempera-ture range used extended from-80 to 110deg C.The absorption data were analysed using a Computer program based on the Cole-Cole method.Four absorption regions were obtained in addition to conductivity contribution.Results are discussed and new assignments to the molecular origin of the four absorption regions are given.