Title :
The low frequency response of styrene butylene rubber (SBR)
Author :
Mackersie, J.W. ; Given, M.J. ; MacGregor, S.J. ; Fouracre, R.A.
Author_Institution :
Appl. Electr. Technol. Group, Strathclyde Univ., Glasgow, UK
Abstract :
Charging and discharging currents due to the application of a step voltage to styrene butylene rubber (SBR) 50 μm thick were measured for a 1.27 × 105 s as a function of temperature from 30 to 120°C. Activation energies were derived from the isochronal measurements of the charging currents for two distinct temperature regions. Transformation of the discharging current to the frequency domain identified two loss peaks. An activation energy was determined for the higher frequency peak. Curve fitting allowed the resolution of the lower frequency peak and the determination of the temperature dependence of the fitted parameters.
Keywords :
ageing; dielectric losses; rubber; transients; 30 to 120 degC; 50 micron; activation energy; charging currents; discharging currents; isochronal measurements; loss peaks; low frequency response; solution-cast samples; step voltage; styrene butylene rubber; temperature dependence; Current measurement; Curve fitting; Energy measurement; Energy resolution; Frequency domain analysis; Frequency response; Rubber; Temperature; Thickness measurement; Voltage;
Conference_Titel :
Electrical Insulation and Dielectric Phenomena, 2002 Annual Report Conference on
Print_ISBN :
0-7803-7502-5
DOI :
10.1109/CEIDP.2002.1048863
