Effect of Volume Fraction and Molding Temperature on the Electric Properties of PZT/PVC Composites
In recent years, combining a ferroelectric ceramic and a polymer matrix to form a flexible composite with coupling properties in between that of two individual phases has been pursued for sensors in medical applications and hydrophones. For hydrophone applications, a useful piezoelectric material should have high piezoelectric voltage coefficient (g33), piezoelectric strain coefficient (d33) and high electromechanical coupling coefficient (Kp), low density and acoustic impendence (Z). The PZT/nanocrystalline PVC composites are prepared by hot-pressing technique. The microstructure of all composites was investigated by XRD and SEM. The effect of volume fraction and molding temperature on dielectric, piezoelectric properties and P-E hysteresis of PZT/PVC composites was investigated. The optimal electric properties have been obtained in 0.5PZT/0.5PVC composite at molding temperature being 150, showing εr 47.66,d33= 18.5pC/N, g33=43.91 mV·m·N-1Kp=0.220, d33·g33=0.81×10-12 Pa-1, Z=11.25×106 kg·s-1·m-2, and could be used for hydrophone materials in the future.
Dielectric piezoelectric and ferroelectricproperties Hydrophone materials PZT/nanocrystalline PVC Molding temperature
X.F. Liu H.J. Sun C.X. Xiong C.Y. Zhang H. Zheng M. Wei
Institute of Chemical Engineering,Wuhan University of Technology,Wuhan 430070 Institute of Material Science and Engineering,Wuhan University of Technology,Wuhan 430070,122 Luoshi
国际会议
西安
英文
354-357
2009-08-23（万方平台首次上网日期，不代表论文的发表时间）