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Dielectric Properties of Epoxy/Micro/Nano Alumina Multi-Composites

에폭시/마이크로/나노알루미나 혼합된 멀티-콤포지트의 유전 특성

  • Park, Jae-Jun (Department of Electrical Elecrtonic Engineering, Joongbu University)
  • 박재준 (중부대학교 전기전자공학과)
  • Received : 2016.08.17
  • Accepted : 2016.08.24
  • Published : 2016.09.01

Abstract

In this work, the complex permittivity of epoxy resins is measured. Epoxy resins, epoxy with micro size fillers and epoxy with micro+nano alumina composites have been evaluated for dielectric properties according to frequency variation. The dielectric spectroscopy measurement and analyses are carried out in the frequency range of $10^{-2}Hz$ to 1MHz and constant to room temperature. The results of dielectric loss suggest that significant improvement in the electrical performance can be expected by using samples containing nano and micro fillers mixture when compared to materials containing only microfillers. As the result, we verified the specific characteristics of dielectric permittivity and dielectric loss namely, relative permittivity become low with improving dispersibility of nano+micro mixture composites and become rise with agglomerate of nano particles.

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