[KSCI] Korea Science Citation Index Service

http://dx.doi.org/10.4313/TEEM.2015.16.6.338

Dielectric Properties of Epoxy/Micro-sized Alumina Composite and of Epoxy/Micro-sized/Nano-sized Alumina Composite

Park, Jae-Jun (Department of Electrical and Electronic Engineering, Joongbu University)

Publication Information

Transactions on Electrical and Electronic Materials / v.16, no.6, 2015 , pp. 338-341 More about this Journal

Abstract

Epoxy/micro-sized alumina composite was prepared, and the effects of alumina content on the dielectric properties were investigated in order to develop an insulation material for gas-insulated switchgears (GIS). Nano-sized alumina (average particle size: 30 nm) was also incorporated into the epoxy/micro-sized alumina composite. Dielectric tests were carried out in ASTM D 150, and capacitance (Cp) and dielectric loss (tanδ) were measured. The dielectric constant increased with increasing alumina content in the epoxy/micro-alumina system and the epoxy/micro-alumina/nano-alumina system. As 1,3-diglycidyl glyceryl ether (DGE) content increased, the dielectric constant decreased and dielectric loss increased. This ocurred as a result of the weak electric field enhancement due to homogeneous dispersion of micro- and nano-sized alumina particles in an epoxy composite.

Keywords

Dielectric constant; Dielectric loss; Epoxy/alumina composite; Epoxy nanocomposite; GIS (gas insulated switchgear);

Citations & Related Records

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