Charging behavior and thermal stability of porous and non-porous polytetrafluoroethylene (PTFE) electrets

M. Wegener; W. Wirges; Mika Paajanen; R. Gerhard

doi:10.1109/CEIDP.2007.4451621

Charging behavior and thermal stability of porous and non-porous polytetrafluoroethylene (PTFE) electrets

M. Wegener, W. Wirges, Mika Paajanen, R. Gerhard

Research output: Chapter in Book/Report/Conference proceeding › Conference article in proceedings › Scientific › peer-review

3 Citations (Scopus)

Abstract

In view of the high piezoelectric activity found on some cellular polymer electret films, polymeric space-charge electretswere studied more frequently during the last ten years. An alternative concept – between cellular electret materials and devices with non-porous electret films – are layer systems of porous and non-porous electret films. Such layer systems exhibit the typical properties of ferroelectrets. In the late nineties, there were several investigations on the charging behavior of porous PTFE, but the main research focus shifted to new cellular ferroelectrets such as polyolefins and polyesters. Today, the additional expertise with polymer ferroelectrets may help to study and better understand the charging behavior of porous PTFE films. In this contribution, maximum charging levels and thermal charge stabilities of porous PTFE films are analyzed. As expected, the charging behavior is strongly influenced by the porosity of the polymer film. Mechanisms that limit the maximum charging levels – such as breakdown-induced conduction – are identified. The thermal stability of trapped charges is tested, and the light emission during the dielectricbarrier discharges of the charging process is briefly described.

Original language	English
Title of host publication	Annual Report Conference on Electrical Insulation and Dielectric Phenomena, CEIDP 2007
Place of Publication	Piscataway, NJ, USA
Publisher	IEEE Institute of Electrical and Electronic Engineers
Pages	449-452
ISBN (Print)	978-1-4244-1481-9, 978-1-4244-1482-6
DOIs	https://doi.org/10.1109/CEIDP.2007.4451621
Publication status	Published - 2007
MoE publication type	A4 Article in a conference publication
Event	IEEE Conference on Electrical Insulation and Dielectric Phenomena, CEIDP 2007 - Vancouver, BC, Canada Duration: 14 Oct 2007 → 17 Oct 2007

Conference

Conference	IEEE Conference on Electrical Insulation and Dielectric Phenomena, CEIDP 2007
Abbreviated title	CEIDP 2007
Country/Territory	Canada
City	Vancouver, BC
Period	14/10/07 → 17/10/07

Access to Document

10.1109/CEIDP.2007.4451621

Cite this

Wegener, M., Wirges, W., Paajanen, M., & Gerhard, R. (2007). Charging behavior and thermal stability of porous and non-porous polytetrafluoroethylene (PTFE) electrets. In Annual Report Conference on Electrical Insulation and Dielectric Phenomena, CEIDP 2007 (pp. 449-452). IEEE Institute of Electrical and Electronic Engineers. https://doi.org/10.1109/CEIDP.2007.4451621

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title = "Charging behavior and thermal stability of porous and non-porous polytetrafluoroethylene (PTFE) electrets",

abstract = "In view of the high piezoelectric activity found on some cellular polymer electret films, polymeric space-charge electretswere studied more frequently during the last ten years. An alternative concept – between cellular electret materials and devices with non-porous electret films – are layer systems of porous and non-porous electret films. Such layer systems exhibit the typical properties of ferroelectrets. In the late nineties, there were several investigations on the charging behavior of porous PTFE, but the main research focus shifted to new cellular ferroelectrets such as polyolefins and polyesters. Today, the additional expertise with polymer ferroelectrets may help to study and better understand the charging behavior of porous PTFE films. In this contribution, maximum charging levels and thermal charge stabilities of porous PTFE films are analyzed. As expected, the charging behavior is strongly influenced by the porosity of the polymer film. Mechanisms that limit the maximum charging levels – such as breakdown-induced conduction – are identified. The thermal stability of trapped charges is tested, and the light emission during the dielectricbarrier discharges of the charging process is briefly described.",

author = "M. Wegener and W. Wirges and Mika Paajanen and R. Gerhard",

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doi = "10.1109/CEIDP.2007.4451621",

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booktitle = "Annual Report Conference on Electrical Insulation and Dielectric Phenomena, CEIDP 2007",

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Wegener, M, Wirges, W, Paajanen, M & Gerhard, R 2007, Charging behavior and thermal stability of porous and non-porous polytetrafluoroethylene (PTFE) electrets. in Annual Report Conference on Electrical Insulation and Dielectric Phenomena, CEIDP 2007. IEEE Institute of Electrical and Electronic Engineers, Piscataway, NJ, USA, pp. 449-452, IEEE Conference on Electrical Insulation and Dielectric Phenomena, CEIDP 2007, Vancouver, BC, Canada, 14/10/07. https://doi.org/10.1109/CEIDP.2007.4451621

Charging behavior and thermal stability of porous and non-porous polytetrafluoroethylene (PTFE) electrets. / Wegener, M.; Wirges, W.; Paajanen, Mika et al.
Annual Report Conference on Electrical Insulation and Dielectric Phenomena, CEIDP 2007. Piscataway, NJ, USA: IEEE Institute of Electrical and Electronic Engineers, 2007. p. 449-452.

Research output: Chapter in Book/Report/Conference proceeding › Conference article in proceedings › Scientific › peer-review

TY - GEN

T1 - Charging behavior and thermal stability of porous and non-porous polytetrafluoroethylene (PTFE) electrets

AU - Wegener, M.

AU - Wirges, W.

AU - Paajanen, Mika

AU - Gerhard, R.

PY - 2007

Y1 - 2007

N2 - In view of the high piezoelectric activity found on some cellular polymer electret films, polymeric space-charge electretswere studied more frequently during the last ten years. An alternative concept – between cellular electret materials and devices with non-porous electret films – are layer systems of porous and non-porous electret films. Such layer systems exhibit the typical properties of ferroelectrets. In the late nineties, there were several investigations on the charging behavior of porous PTFE, but the main research focus shifted to new cellular ferroelectrets such as polyolefins and polyesters. Today, the additional expertise with polymer ferroelectrets may help to study and better understand the charging behavior of porous PTFE films. In this contribution, maximum charging levels and thermal charge stabilities of porous PTFE films are analyzed. As expected, the charging behavior is strongly influenced by the porosity of the polymer film. Mechanisms that limit the maximum charging levels – such as breakdown-induced conduction – are identified. The thermal stability of trapped charges is tested, and the light emission during the dielectricbarrier discharges of the charging process is briefly described.

AB - In view of the high piezoelectric activity found on some cellular polymer electret films, polymeric space-charge electretswere studied more frequently during the last ten years. An alternative concept – between cellular electret materials and devices with non-porous electret films – are layer systems of porous and non-porous electret films. Such layer systems exhibit the typical properties of ferroelectrets. In the late nineties, there were several investigations on the charging behavior of porous PTFE, but the main research focus shifted to new cellular ferroelectrets such as polyolefins and polyesters. Today, the additional expertise with polymer ferroelectrets may help to study and better understand the charging behavior of porous PTFE films. In this contribution, maximum charging levels and thermal charge stabilities of porous PTFE films are analyzed. As expected, the charging behavior is strongly influenced by the porosity of the polymer film. Mechanisms that limit the maximum charging levels – such as breakdown-induced conduction – are identified. The thermal stability of trapped charges is tested, and the light emission during the dielectricbarrier discharges of the charging process is briefly described.

U2 - 10.1109/CEIDP.2007.4451621

DO - 10.1109/CEIDP.2007.4451621

M3 - Conference article in proceedings

SN - 978-1-4244-1481-9

SN - 978-1-4244-1482-6

SP - 449

EP - 452

BT - Annual Report Conference on Electrical Insulation and Dielectric Phenomena, CEIDP 2007

PB - IEEE Institute of Electrical and Electronic Engineers

CY - Piscataway, NJ, USA

T2 - IEEE Conference on Electrical Insulation and Dielectric Phenomena, CEIDP 2007

Y2 - 14 October 2007 through 17 October 2007

ER -

Charging behavior and thermal stability of porous and non-porous polytetrafluoroethylene (PTFE) electrets

Abstract

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