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Structural and Electrical Properties of PZT/PVDF Piezoelectric Nanocomposites Prepared by Cold-Press and Hot-Press Routes |
ZHANG De-Qing1,2, WANG Da-Wei2, YUAN Jie3, ZHAO Quan-Liang2, WANG Zhi-Ying2, CAO Mao-Sheng2 |
1College of Chemical Engineering, Qiqihar University, Qiqihar 1610062School of Material Science and Engineering, Beijing Institute of Technology, Beijing 1000813School of Information Engineering, Central University for Nationality, Beijing 100081 |
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Cite this article: |
ZHANG De-Qing, WANG Da-Wei, YUAN Jie et al 2008 Chin. Phys. Lett. 25 4410-4413 |
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Abstract The 0-3 PZT/PVDF piezoelectric composites are prepared separately by hot-press and cold-press processes. The effects of the PZT content and the shaping-process on the composites are studied. The experimental results indicate that composites with 70% PZT nanopowders prepared by the hot-press method exhibit excellent piezoelectric and dielectric properties. The maxima of d33 and ε of the composites prepared by hot-press method are about 30% and 65% higher than those prepared by the cold-press method, respectively. This is mainly attributed to the favourable coupling of the two materials in the process of the hot press and the formation of the β-type PVDF, which possesses better electric properties.
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Keywords:
77.84.Lf
77.65.-j
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Received: 06 October 2008
Published: 27 November 2008
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PACS: |
77.84.Lf
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(Composite materials)
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77.65.-j
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(Piezoelectricity and electromechanical effects)
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