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| Format: | Artículo Open Access |
| Veröffentlicht: |
Wiley
2024
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| Online-Zugang: | https://4spepublications.onlinelibrary.wiley.com/doi/10.1002/pc.28166 |
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Inhaltsangabe:
- Enhanced electromechanical coupling in Pb(ZrTi)O3 piezoelectric composite via poly(vinylidene fluoride‐trifluoroethylene) clamping Jiahao Wang Weimin Xia Rong Wang Hong Pan Xiaofang Zhang Polymer Composites AbstractThis 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. 10.1002/pc.28166 http://onlinelibrary.wiley.com/termsAndConditions#vor