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A Study on Insulation Degradation Properties of Thermal Conductive Silicone Rubber due to Temperature Transition

온도 변화에 의한 열전도성 실리콘 고무의 절연 열화 특성

  • Lee, Sung Ill (Department of Safety Engineering, Korea National University of Transportation)
  • 이성일 (한국교통대학교 안전공학과)
  • Received : 2015.06.20
  • Accepted : 2015.06.24
  • Published : 2015.07.01

Abstract

In this study, the frequency properties of electrostatic capacity and dielectric loss for the samples with different types of filler has been measured in through the applied frequency range of 7 kHz ~3,000 kHz at temperature of $80^{\circ}C$, $110^{\circ}C$, $140^{\circ}C$, $170^{\circ}C$. The results of this study are as follows. When the sample is degradated at the temperature of $80^{\circ}C$, $110^{\circ}C$, $140^{\circ}C$, $170^{\circ}C$ and the frequency range of 7 kHz ~3,000 kHz is applied, It found that the electrostatic capacity of the sample with Polyimide film is larger than the sample with Grass fiber. It found that the dielectric loss for the sample with Polyimide film is larger than the sample with Grass fiber with increasing frequency and temperature in the $80^{\circ}C$, $110^{\circ}C$, $140^{\circ}C$, $170^{\circ}C$ range. Also, the dielectric loss decreased with increasing frequency. In case of the sample with Polyimide film, It found that the electrostatic capacity decreased with increasing temperature, and the dielectric loss gradually decreased with increasing frequency.

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