Nonlinear DC voltage-current characteristics of new polymeric composite materials based on semiconductive polyaniline emeraldine base filler

Jani Pelto, Mika Paajanen, K. Kannus, K. Lahti, P. Harju

Research output: Chapter in Book/Report/Conference proceedingConference article in proceedingsScientificpeer-review

4 Citations (Scopus)

Abstract

The aim of this study is to develop new polymer-based compounds with nonlinear current-voltage properties and good processability. We have formulated polymeric compounds based on semiconductive polyaniline emeraldine base (PANI-EB), The reference PANI-EB specimen were prepared by powder compacting and solvent casting. Silicone rubber was chosen as the matrix polymer for the composites. We studied the effects of the filler particle loading and of the graphite co-filler on the composite j-E- characteristics. We found that nonlinear j-E -curves can be attained by using either conductive graphite or semiconductive (PANI-EB) fillers alone or combined. Their properties depend strongly on the composite processing and composition. The composites show electrical properties that could readily be utilized in stress grading. In all the sample types and reference samples we observed alpha-values much higher than the requirement for stress grading applications - the highest being about 25 for bulk PANI-EB with graphite electrodes.
Original languageEnglish
Title of host publicationProceedings of the 2004 IEEE International Conference on Solid Dielectrics ICSC'04
PublisherIEEE Institute of Electrical and Electronic Engineers
Pages825-828
ISBN (Print)0-7803-8348-6
DOIs
Publication statusPublished - 2004
MoE publication typeA4 Article in a conference publication
EventIEEE International Conference on Solid Dielectrics, ICSD 2004 - Toulouse, France
Duration: 5 Jul 20049 Jul 2004

Conference

ConferenceIEEE International Conference on Solid Dielectrics, ICSD 2004
CountryFrance
CityToulouse
Period5/07/049/07/04

Keywords

  • nonlinear
  • Composite material
  • polyaniline
  • silicone rubber

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