Radiation Effects on ${\gamma}$-Ray Irradiated Ethylene Propylene Rubber using Dielectric Analysis

  • Kim, Ki-Yup (Korea Atomic Energy Research Institute) ;
  • Ryu, Boo-Hyung (Dept. of Safety Engineering, Dongguk University) ;
  • Lee, Chung (Dept. of Electrical Engineering, Chungbuk Nat′l University) ;
  • Lim, Kee-Joe (Dept. of Electrical Engineering, Chungbuk Nat′l University)
  • 발행 : 2003.04.01

초록

To evaluate the radiation degradation of ethylene propylene rubber (EPR), radiation effects on EPR were investigated by using dielectric analysis and thermal-gravimetric analysis. Permittivity, loss factor, tan$\delta$, and thermal decomposition temperature were observed for ${\gamma}$-ray irradiated EPR. As the radiation dose was increased, the peak temperature of the loss factor and tans of EPR were increased and loss factor and tan$\delta$ at peak temperature were decreased. Activation energies were calculated using loss factor and thermal decomposition for ${\gamma}$-ray irradiated EPR as well. The trends of both calculated activation energies showed the same tendencies as radiation dose was increased.

키워드

참고문헌

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