The Transactions of The Korean Institute of Electrical Engineers (전기학회논문지)

The Korean Institute of Electrical Engineers (대한전기학회)
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The AC Insulation Breakdown Properties of Epoxy/Multi-Alumina Composites for Adding Surface Modified Nano Alumina

표면처리된 나노알루미나가 첨가된 에폭시/멀티-알루미나 콤포지트의 교류절연파괴 특성

  • Park, Jae-Jun (Dept. of Electrical and Electronic Engineering, Joongbu University)
  • Received : 2016.07.31
  • Accepted : 2016.08.17
  • Published : 2016.09.01
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Abstract

The aim of this study is to improve of properties for electrical AC insulation breakdown strength using epoxy/micro-nano alumina composites with adding glycerol diglycidyl ether (GDE:1,3,5g). This paper deals with the effects of GDE addition for epoxy/micro alumina contents (40,50,60wt%)+surface modified nano alumina(1_phr) composites. 14 kinds specimen were prepared with containing epoxy resins, epoxy micro composites and epoxy nano-micro alumina mixture composites. Average particle size of nano and micro alumina used were 30nm and $1{\sim}2{\mu}m$, respectively. The micro alumina used were alpha phase with Heterogeneous and nano alumina were gamma phase particles of spherical shape. The electrical AC insulation breakdown strength was evaluated by sphere to sphere electrode system and raising velocity 1kV/s. The AC breakdown strength decreased insulation properties of multi-composites according to increasing micro alumina and GDE addition contents.

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References

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