Ferroelectrets Filled with a High Breakdown-Strength Gas

William D. Joysey, Axel Mellinger

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

2 Scopus citations

Abstract

Ferroelectrets (i. e. voided, soft polymer composites with internal bipolar space charges) were prepared by laminating porous spacers between polyproplyene films in gas mixtures containing sulfur hexafluoride (\mathrm{SF}-{6}), a gas of higher electric breakdown strength than air. This has the potential to reduce 'back discharges', which occur when the electric field created by the deposited space charges exceeds the breakdown strength of the gas in the void. As a result, significantly higher piezoelectric activity is expected. As shown by hysteresis curves and nonlinear capacitance dilatometry measurements, the SF 6 -filled samples do indeed exhibit an increased polarization and a 2-3\times enhancement in their d-{33} coefficients.

Original languageEnglish
Title of host publication2018 IEEE CEIDP Conference on Electrical Insulation and Dielectric Phenomena, CEIDP 2018
PublisherInstitute of Electrical and Electronics Engineers Inc.
Pages94-97
Number of pages4
ISBN (Electronic)9781538661925
DOIs
StatePublished - Nov 26 2018
Event2018 IEEE CEIDP Conference on Electrical Insulation and Dielectric Phenomena, CEIDP 2018 - Cancun, Mexico
Duration: Oct 21 2018Oct 24 2018

Publication series

NameAnnual Report - Conference on Electrical Insulation and Dielectric Phenomena, CEIDP
Volume2018-October
ISSN (Print)0084-9162

Conference

Conference2018 IEEE CEIDP Conference on Electrical Insulation and Dielectric Phenomena, CEIDP 2018
Country/TerritoryMexico
CityCancun
Period10/21/1810/24/18

Keywords

  • Dielectric barrier discharges
  • Ferroelectrets
  • Piezoelectricity

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