NDLI: Short term DC breakdown strength in epoxy based BN nano- and microcomposites

Content Provider	IEEE Xplore Digital Library
Author	Andritsch, T. Kochetov, R. Gebrekiros, Y.T. Morshuis, P.H.F. Smit, J.J.
Copyright Year	2010
Description	Author affiliation: Delft University of Technology, Delft, the Netherlands (Andritsch, T.; Kochetov, R.; Gebrekiros, Y.T.; Morshuis, P.H.F.; Smit, J.J.)
Abstract	Nanocomposites have been known in the field of electrical engineering for more than a decade, albeit there are still uncertainties of how the filler properties influence the properties of the composite material. Filler size, shape, aspect ratio and the surface modification, which consequently leads to even dispersion or clusters of particles, are all suspected to influence the dielectric behaviour of the insulation. But it is disputed what influences the properties to what extent. The focus of this paper is the dependence of the short term breakdown (BD) strength of polymer based composites filled with boron nitride (BN) on the filler size. Base polymer is commercially available bisphenol A epoxy with anhydrite hardener. As filler material we use boron nitride powder with different average particle sizes. These are ranging from 70 to 5000 nm. The particles were not surface modified in order to see solely the influence of the filler size on the BD strength. The short term BD strength was measured for negative DC voltages with Rogowski shaped electrodes. Dielectric spectroscopy was done complementarily to see how the filler size influences the relative permittivity of the composites.
Starting Page	1
Ending Page	4
File Size	156221
Page Count	4
File Format	PDF
ISBN	9781424479450
e-ISBN	9781424479443
e-ISBN	9781424479436
DOI	10.1109/ICSD.2010.5568098
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2010-07-04
Publisher Place	Germany
Access Restriction	Subscribed
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Permittivity Dielectrics Permittivity measurement Polymers Electric breakdown Nanocomposites
Content Type	Text
Resource Type	Article

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