ELECTRIC POLING BEHAVIOR OF POLYMETHYLMETHACRYLATE

被引：7

作者：

BERNSTEIN, JB ^{[1
]}

COOKE, CM ^{[1
]}

机构：

[1] MIT,DEPT ELECT ENGN & COMP SCI,CAMBRIDGE,MA 02139

来源：

IEEE TRANSACTIONS ON ELECTRICAL INSULATION | 1991年 / 26卷 / 06期

关键词：

D O I：

10.1109/14.108145

中图分类号：

TM [电工技术]; TN [电子技术、通信技术];

学科分类号：

0808 ; 0809 ;

摘要：

The electrically stimulated acoustic wave method for observing resident space charge in dielectric insulators has been used to characterize the poling behavior of mm thickness samples of PMMA at temperatures from 40 to 90-degrees-C with moderate applied fields. Heterocharge appears in the bulk of every sample tested resulting in an apparent net increase of low frequency dielectric permittivity over time. In addition, a net internal charge was observed in some cases. This net charge was negative and located in the vicinity of the poling anode, and became most significant at 90-degrees-C.

引用

页码：1087 / 1093

页数：7

共 19 条

[1] CHARGING PHENOMENA AND SCL REGIME IN POLYMERIC DIELECTRICS [J].