Abstract
Cellular polymers, showing interesting quasi-piezoelectric properties upon charging under an electrical field, have been developed for a few years. They are manufactured by a method generating a high density of internal cavities, which play a major role in the charging process. Therefore, investigation of charging mechanisms is fundamental to reach optimization of electret and quasi-piezoelectric properties. This paper investigates the efficiency of contact charging of cellular polypropylene (PP) as a function of a manufacturing treatment, i.e. gas expansion, that increases the mean size of internal cavities. Testing techniques are based on partial discharge and space charge measurements. A model for the charging process is presented, with the purpose of providing explanations to the different behavior of cellular and cellular expanded PP.
Original language | English |
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Title of host publication | The 17th Annual Meeting of the IEEE Lasers and Electro-Optics Society |
Subtitle of host publication | LEOS 2004 |
Place of Publication | Piscataway, NJ, USA |
Publisher | IEEE Institute of Electrical and Electronic Engineers |
Pages | 153-157 |
ISBN (Print) | 0-7803-8584-5 |
DOIs | |
Publication status | Published - 2004 |
MoE publication type | A4 Article in a conference publication |