A comparative approach to predicting effective dielectric, piezoelectric and elastic properties of PZT/PVDF composites
A comparative approach to predicting effective dielectric, piezoelectric and elastic properties of PZT/PVDF composites
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DOI：
10.1016/j.physb.2009.06.009
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发表时间：
2009-11-01
影响因子：
2.8
通讯作者：
Prasad, K.
中科院分区：
文献类型：
--
作者：
Ahmad, Zeeshan;Prasad, Ashutosh;Prasad, K.
本研究解决了定量预测 PZT/PVDF 双相陶瓷聚合物复合材料的有效相对介电常数、介电损耗因数、压电电荷系数和杨氏模量作为不同成分中 PZT 体积分数的函数的问题。有效相对介电常数的理论结果源自多个介电混合物方程，如 Knott、Rother-Lichtenecker、Bruggeman、Maxwell-Wagner-Webmann-Skipetrov 或 Dias-Dasgupta、Furukawa、Lewin、Wiener、Jayasundere-Smith、Modified Cule-Torquato、Taylor、Poon-Shin 和 Rao 等人的方程。适合从 Yamada 等人之前的作品中获取的实验数据。类似地，从不同的适当方程导出的有效压电系数和杨氏模量的结果被拟合到从文献中获取的相应实验数据。研究表明，介电和压电特性只有修正的Rother-Lichtenecker方程、Dias-Dasgupta方程和Rao方程等少数方程，而目前弹性特性（杨氏模量）研究中提出的四个新方程很好地拟合了相应的实验结果。此外，用于各种回归分析的可接受数据表明，在大多数情况下，三阶多项式回归分析提供了更可接受的拟合。 (C) 2009 Elsevier B.V. 保留所有权利。
The present study addresses the problem of quantitative prediction of effective relative permittivity, dielectric loss factor, piezoelectric charge coefficient, and Young's modulus of PZT/PVDF diphasic ceramic-polymer composite as a function of volume fraction of PZT in the different compositions. Theoretical results for effective relative permittivity derived from several dielectric mixture equations like those of Knott, Rother-Lichtenecker, Bruggeman, Maxwell-Wagner-Webmann-Skipetrov or Dias-Dasgupta, Furukawa, Lewin, Wiener, Jayasundere-Smith, Modified Cule-Torquato, Taylor, Poon-Shin and Rao et al. were fitted to the experimental data taken from previous works of Yamada et al. Similarly, the results for effective piezoelectric coefficient and Young's modulus, derived from different appropriate equations were fitted to the corresponding experimental data taken from the literature. The study revealed that only a few equations like modified Rother-Lichtenecker equation, Dias-Dasgupta equation and Rao equation for dielectric and piezoelectric properties while the four new equations developed in the present study of elastic property (Young's modulus) well fitted the corresponding experimental results. Further, the acceptable data put to various regression analyses showed that in most of the cases the third order polynomial regression analysis provided more acceptable fits. (C) 2009 Elsevier B.V. All rights reserved.