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http://dx.doi.org/10.5370/KIEE.2016.65.9.1511

The AC Insulation Breakdown Properties of Epoxy/Multi-Alumina Composites for Adding Surface Modified Nano Alumina  

Park, Jae-Jun (Dept. of Electrical and Electronic Engineering, Joongbu University)
Publication Information
The Transactions of The Korean Institute of Electrical Engineers / v.65, no.9, 2016 , pp. 1511-1517 More about this Journal
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.
Keywords
AC insulation breakdown; Epoxy/Micro-nano alumina composites; Surface modified nano alumina; GIS spacer; Heavy electric apparatus; Epoxy/Multi-alumina composites;
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Times Cited By KSCI : 2  (Citation Analysis)
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