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- Title
Enhanced electromechanical coupling in Pb(ZrTi)O<sub>3</sub> piezoelectric composite via poly(vinylidene fluoride‐trifluoroethylene) clamping.
- Authors
Wang, Jiahao; Xia, Weimin; Wang, Rong; Pan, Hong; Zhang, Xiaofang
- Abstract
This study presents an advanced two‐step hot‐pressing process for fabricating the 1‐3 type Pb(ZrTi)O3/poly(vinylidene fluoride‐trifluoroethylene) (PZT/P(VDF‐TrFE)) piezoelectric composite sheets, demonstrating significant potential for nondestructive evaluation and information storage applications. The engineered columnar architecture within these composites induces a two‐phase clamping effect, which, upon polarization, facilitates the elongation of PZT and suppresses its lateral vibrations, thus enhancing the electromechanical coupling effect as verified by COMSOL simulations. A notable dielectric constant of 2200 at 100 Hz and a coupling coefficient of 0.725 was achieved with specific geometric modifications to the PZT/P(VDF‐TrFE) sheets. These findings suggest that P(VDF‐TrFE) as a polymer matrix exceeds the performance of conventional epoxy matrices, offering a novel approach to designing 1‐3 type piezoelectric composites. Highlights: P(VDF‐TrFE) effectively drives the elongation strain of internal PZT columns.COMSOL simulation clarifies the clamping effect of piezoelectric P(VDF‐TrFE).PZT/P(VDF‐TrFE) shows a higher kt of 0.725 than that of pure PZT samples.
- Subjects
PIEZOELECTRIC composites; PIEZOELECTRICITY; ELECTROMECHANICAL effects; NONDESTRUCTIVE testing; PERMITTIVITY; POLYVINYLIDENE fluoride; LEAD zirconate titanate
- Publication
Polymer Composites, 2024, Vol 45, Issue 7, p5870
- ISSN
0272-8397
- Publication type
Article
- DOI
10.1002/pc.28166