Influence of poling conditions on the gas emission of PVDF

Eberle, Gernot; Schmidt, Helmut; Eisenmenger, Wolfgang

Influence of poling conditions on the gas emission of PVDF

dc.contributor.author	Eberle, Gernot	de
dc.contributor.author	Schmidt, Helmut	de
dc.contributor.author	Eisenmenger, Wolfgang	de
dc.date.accessioned	2010-10-19	de
dc.date.accessioned	2016-03-31T08:36:13Z
dc.date.available	2010-10-19	de
dc.date.available	2016-03-31T08:36:13Z
dc.date.issued	1993	de
dc.description.abstract	The influence of the poling time and the polarity of the applied voltage on the time dependence of the gas emission of PVDF is investigated. If PVDF films are poled in electric fields of about 100MV/m, charges are injected and ions are formed by electrochemical reactions. By recombination and by other reactions of these ions, HF gas is evolved, diffusing out of the sample through the porous electrode. This gas emission increases with increasing field strength. At constant field it decreases to a steady state value comparable to the space-charge-limited poling current of PVDF. Free ions are trapped in the polarization zone. Under short-circuit conditions shallow trapped ions are freed and the gas emission increases strongly. The longer the poling time, the broader the polarization distribution. If the polarization zone is located near the nonporous electrode, the recombined gas molecules need longer time to reach the porous electrode. Therefore, the gas emission under short-circuit conditions is delayed by poling with negative polarity compared to positive polarity.	en
dc.identifier.other	353262137	de
dc.identifier.uri	http://nbn-resolving.de/urn:nbn:de:bsz:93-opus-56405	de
dc.identifier.uri	http://elib.uni-stuttgart.de/handle/11682/5010
dc.identifier.uri	http://dx.doi.org/10.18419/opus-4993
dc.language.iso	en	de
dc.rights	info:eu-repo/semantics/openAccess	de
dc.subject.classification	Polyvinylidenfluorid , Polymerfilm , Dielektrische Polarisation	de
dc.subject.ddc	530	de
dc.title	Influence of poling conditions on the gas emission of PVDF	en
dc.type	conferenceObject	de
ubs.fakultaet	Fakultät Mathematik und Physik	de
ubs.institut	1. Physikalisches Institut	de
ubs.opusid	5640	de
ubs.publikation.source	IEEE 1993 Annual Report / Conference on Electrical Insulation and Dielectric Phenomena : October 17 - October 20, 1993, Pocono Manor, Pennsylvania. Piscataway, N.J. : IEEE Service Center, 1993. - ISBN 0-7803-0966-9, S. 263-268	de
ubs.publikation.typ	Konferenzbeitrag	de

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