Electret properties of cycloolefin copolymers

Author

Sessler, G.M. ; Yang, G.M. ; Hatke, W.

Author_Institution

Darmstadt Univ. of Technol., Germany

Volume

2

fYear

1997

fDate

19-22, Oct 1997

Firstpage

467

Abstract

The electret properties of cycloolefin copolymer (COC) films, metalized on one side and charged with corona or electron-beam methods, were investigated. Measurements of the isothermal decay of surface and bulk charges under room conditions and at elevated temperatures and humidities as well as thermally-stimulated current measurements indicate excellent stability of surface charges of positive and negative polarity. Negative bulk charges, injected be electron beams, are less stable. The COC materials are nonpolar and show no measurable piezo- and pyroelectric activity

Keywords

electrets; polymer blends; polymer films; surface potential; thermally stimulated currents; COC film; bulk charge; corona charging; cycloolefin copolymer; electret; electron beam charging; elevated temperature; humidity; isothermal potential decay; metalization; surface charge; thermally stimulated current; Amorphous materials; Corona; Current measurement; Electrets; Electric resistance; Electron beams; Glass; Polymers; Surface charging; Temperature;

fLanguage

English

Publisher

ieee

Conference_Titel

Electrical Insulation and Dielectric Phenomena, 1997. IEEE 1997 Annual Report., Conference on

Conference_Location

Minneapolis, MN

Print_ISBN

0-7803-3851-0

Type

conf

DOI

10.1109/CEIDP.1997.641113

Filename

641113