Time dependence of piezoelectric d33 coefficient of cellular ferroelectret polypropylene film

被引：22

作者：

Wan, Yongping ^{[1
]}

Xie, Longtao ^{[1
]}

Zhang, Xiaoqing ^{[2
]}

Zhong, Zheng ^{[1
]}

机构：

[1] Tongji Univ, Sch Aerosp Engn & Appl Mech, Shanghai 200092, Peoples R China

[2] Tongji Univ, Dept Phys, Shanghai 200092, Peoples R China

来源：

APPLIED PHYSICS LETTERS | 2011年 / 98卷 / 12期

基金：

中国国家自然科学基金;

关键词：

ELECTRET FILMS; ELECTROMECHANICAL PROPERTIES; POLYMERS; TRANSDUCERS; COMPOSITES; EXPANSION; BEHAVIOR;

D O I：

10.1063/1.3569950

中图分类号：

O59 [应用物理学];

学科分类号：

摘要：

Due to the inherent viscosity of polymer, piezoelectric response in the thickness direction (d(33)) of cellular ferroelectret films usually depends on the time of measurement. In this letter, the micromechanical theory of viscoelastic composite was extended to predict the time dependence of the overall piezoelectric d(33) coefficient of voided charged polymer foam. Experiments were carried out to find the time spectra of piezoelectric d(33) coefficient of voided charged polypropylene film. Theoretical simulation agrees well with experiment data. (C) 2011 American Institute of Physics. [doi:10.1063/1.3569950]

引用

页数：3

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