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
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
摘要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.
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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2008, Vol. 25 
