Electrical properties of epoxy resin filled with carbon fibers

The electrical properties of an epoxy resin filled with carbon fibers were studied. By discharging a high voltage through the composite it was found that the resistivity of the composite decreased. This effect was attributed to local dielectric breakdown of polymer layer between carbon fibers. The c...

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Bibliographic Details
Published in:Journal of materials science 1999, Vol.34 (22), p.5589-5592
Main Authors: Chekanov, Yuri, Ohnogi, Ryuji, Asai, Shigeo, Sumita, Masao
Format: Article
Language:English
Subjects:
Carbon fiber reinforced plastics
Carbon fibers
Carbon-epoxy composites
Current voltage characteristics
Dependence
Dielectric breakdown
Electrical properties
Electrical resistivity
Epoxy resins
High voltages
Materials science
Positive temperature coefficient
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Summary:The electrical properties of an epoxy resin filled with carbon fibers were studied. By discharging a high voltage through the composite it was found that the resistivity of the composite decreased. This effect was attributed to local dielectric breakdown of polymer layer between carbon fibers. The conduction mechanism of common and breakdown composites was studied by means of exploring of current-voltage characteristics and the frequency dependence of resistivity. A positive temperature coefficient (PTC) effect of resistivity behavior was observed both for common and breakdown samples.
ISSN:0022-2461
1573-4803
DOI:10.1023/A:1004737217503