The electret behavior of poly(vinylidenefluoride/chlorotrifluorethylene) film

Author

Qiu, X. ; Xia, Z. ; Wang, F. ; Wu, Y. ; Zhang, Y.

Author_Institution

Pohl Inst. of Solid State Phys., Tongji Univ., Shanghai, China

fYear

2002

fDate

2002

Firstpage

322

Lastpage

325

Abstract

By positively and negatively corona charging at room and elevated temperatures, measurements of surface potential decay, thermally stimulated discharge (TSD) current spectra in combination with the heat pulse technology, the electret character of the copolymer P(VDF/CTFE) film, polymerized from vinylidenefluoride (VDF) and chlorotrifluorethylene (CTFE), has been studied. The space charge storage capability of P(VDF/CTFE) is significantly greater than that of PVDF. P(VDF/CTFE) is a polar material, i.e. it contains both dipoles and space charges in the material. Moreover the space charge storage ability of positively and negatively corona charged samples has been compared, and the geometric distribution of traps has been studied. Finally, the shift of mean charge depth with charging temperature has been investigated.

Keywords

electrets; polymer blends; polymer films; space charge; surface potential; thermally stimulated currents; P(VDF/CTFE) copolymer film; corona charging; electret; heat pulse technology; polar material; poly(vinylidenefluoride/chlorotrifluorethylene) film; space charge; surface potential decay; thermally stimulated discharge current spectra; trap distribution; Corona; Current measurement; Electrets; Polymer films; Pulse measurements; Space charge; Space technology; Surface charging; Surface discharges; Temperature measurement;

fLanguage

English

Publisher

ieee

Conference_Titel

Electrets, 2002. ISE 11. Proceedings. 11th International Symposium on

Print_ISBN

0-7803-7560-2

Type

conf

DOI

10.1109/ISE.2002.1043008

Filename

1043008