Comparison and electrical modeling of new polymeric cellular electrets

Carlo Gian Montanari; Giovanni Mazzanti; Fabio Ciani; Mika Paajanen

doi:10.1109/TUFFC.2005.1561679

Comparison and electrical modeling of new polymeric cellular electrets

Carlo Gian Montanari, Giovanni Mazzanti (Corresponding Author), Fabio Ciani, Mika Paajanen

BA3609 Materials processing and circular solutions

Research output: Contribution to journal › Article

4 Citations (Scopus)

Abstract

A new family of cellular polymers - that, upon appropriate charging, reveals interesting piezoelectric properties - has been developed recently. Its major characteristic is thermal stability up to high temperatures, which broadens the potential field of application. These materials become electrets upon charging under high levels of electric field. Investigation of charging mechanisms is fundamental to reach optimization of electret arid piezoelectric properties. This paper presents results and considerations relevant to contact charging of these new materials, pointing out the relation between partial discharge and space charge formation, as well as time and temperature stability of electret properties. The concepts of threshold for partial discharge inception and space charge accumulation, the modeling of avalanches in cavities, and the rate of charge generation are exploited trying to explain charging mechanism and. therefore, they provide useful indication for optimization of material manufacturing.

Original language	English
Pages (from-to)	2088 - 2095
Number of pages	8
Journal	IEEE Transactions on Ultrasonics, Ferroelectrics, and Frequency Control
Volume	52
Issue number	11
DOIs	https://doi.org/10.1109/TUFFC.2005.1561679
Publication status	Published - 2005
MoE publication type	A1 Journal article-refereed

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Montanari, C. G., Mazzanti, G., Ciani, F., & Paajanen, M. (2005). Comparison and electrical modeling of new polymeric cellular electrets. IEEE Transactions on Ultrasonics, Ferroelectrics, and Frequency Control, 52(11), 2088 - 2095. https://doi.org/10.1109/TUFFC.2005.1561679

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AU - Ciani, Fabio

AU - Paajanen, Mika

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10.1109/TUFFC.2005.1561679