Mechanical stresses and charge stability in non-polar polymeric electrets

Author

Boitsov, Uictor G. ; Rychkov, Andrey A. ; Rozkov, Igor N.

Author_Institution

Dept. of Tech. Sci., State Pedagogical Univ., St. Petersburg, Russia

fYear

1994

fDate

7-9 Sep 1994

Firstpage

445

Lastpage

449

Abstract

A correlation between morphology and charge stability in non-polar polymeric electrets has been studied. It has been possible to show that isometric heating of polymer led to the changes in the supermolecular structure, particularly in the crystallinity. Electret measurements were made using special experimental method, based on simultaneous registration of the thermal shrinkage stresses and the surface potential relaxation. It has been found that mechanical stresses in the polymer influenced on the charge stability significantly. From the results obtained we were able to determine the isometric heating conditions which were useful to improve charge stability of non-polar polymeric electrets

Keywords

dielectric relaxation; electrets; organic insulating materials; polymer structure; polymers; space charge; stress relaxation; surface potential; charge stability; crystallinity; electret measurements; isometric heating; mechanical stresses; morphology; nonpolar polymeric electrets; supermolecular structure; surface potential relaxation; thermal shrinkage stresses; Blades; Crystallization; Electrets; Heating; Polymers; Production; Stability; Stress measurement; Thermal stresses; Transducers;

fLanguage

English

Publisher

ieee

Conference_Titel

Electrets, 1994. (ISE 8), 8th International Symposium on

Conference_Location

Paris

Print_ISBN

0-7803-1940-0

Type

conf

DOI

10.1109/ISE.1994.514810

Filename

514810