Water Exposure and Thermal Aging Effects on Dielectric Response of Liquid Silicone Rubber Insulators

Water exposure and thermal aging effects on the dielectric response of LSR insulator samples were analyzed in this paper. The dielectric spectra of the real and imaginary permittivities, over a frequency range of 10
^-2
-10
⁶
Hz and for temperatures from 30 to 70 °C, measured before any exposure, after one week immersion in deionized water and after one month thermal aging at 90 °C are presented and discussed in this paper.