Piezoelectricity of multi-layers space-charge electrets from Teflon FEP film with homogeneous voids distributed on its surface

被引：12

作者：

Altafim, RAC ^{[1
]}

Dias, C ^{[1
]}

Neto, LG ^{[1
]}

Basso, HC ^{[1
]}

Murakami, C ^{[1
]}

Veronese, PR ^{[1
]}

Rodrigues, EF ^{[1
]}

机构：

[1] Univ Sao Paulo, Sch Engn, Sao Paulo, Brazil

来源：

2003 ANNUAL REPORT CONFERENCE ON ELECTRICAL INSULATION AND DIELECTRIC PHENOMENA | 2003年

关键词：

D O I：

10.1109/CEIDP.2003.1254834

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 development of new cellular and porous polymers has introduced new advances on the study of the piezoelectricity characteristics of electric charged polymers. Recently, a multi-layer space-charge electret was also fabricated using at least one "soft" porous and one "hard" nonporous Teflon PTFE film assembled in various multi-layer stacks. Now, in this paper we propose a new multi-layer space-charge electret fabricated using at least one Teflon-FEP film with small voids homogeneously distributed on its surface. The device has the same concept of the electret microphone mechanism. When these multi-layer setups are charged by impulse voltage process, it is possible to obtain samples with high piezoelectric coefficients. Controlling the size of the voids on the film interface, we can obtain a better control of the charging processes and, can determine a better value of the charging impulse voltage.

引用

页码：225 / 228

页数：4

共 11 条

[1] A NOVEL METHOD FOR ELECTRET PRODUCTION USING IMPULSE VOLTAGES [J].