The thermal-step-technique applied to the study of charge decay in polyethylene thermoelectrets

Author

Toureille, A. ; Reboul, J.P.

Author_Institution

Univ. des Sci. et Tech. du Languedoc, Montpellier, France

fYear

1988

fDate

1-3 Sep 1988

Firstpage

23

Lastpage

27

Abstract

A nondestructive method for locating the space charge and measuring the residual electric field inside thick samples is described. The techniques consists of applying a thermal step on one or the other side of the sample. The propagation of the thermal expansion and the relative shift of the charges induce currents in the external circuit which are then computed. The method has been used to study the change of charge density and charge location, as a function of time, in several polyethylene (PE) thermoelectrets formed under different charging conditions

Keywords

electric fields; polymers; space charge; thermal expansion; thermoelectrets; charge decay; charge density; currents; nondestructive method; polyethylene thermoelectrets; residual electric field; space charge; thermal expansion; thermal-step-technique; thick samples; Charge measurement; Circuits; Current measurement; Electric variables measurement; Electrodes; Polyethylene; Space charge; Temperature; Thermal expansion; Thickness measurement;

fLanguage

English

Publisher

ieee

Conference_Titel

Electrets, 1988. (ISE 6) Proceedings., 6th International Symposium on (IEEE Cat. No.88CH2593-2)

Conference_Location

Oxford

Type

conf

DOI

10.1109/ISE.1988.38518

Filename

38518