聚偏氟乙烯薄膜自1969年 kawai 发现其显示强压电性后,至今已达到了实用化阶段,但是聚偏氟乙烯(PVDF)的 d 常数仍远小于压电陶瓷,而压电陶瓷的致命弱点是脆性。为了获得既具强压电性同时又具有良好的柔软性及加工性能的材料,人们对聚合物和压电陶瓷的复合材料进行了研究,提出了聚合物与压电陶瓷的3-3复合及3-1复 Polyvinylidene fluoride film has been pragmatic since kawai was found to exhibit strong piezoelectricity in 1969. However, the d-constant of polyvinylidene fluoride (PVDF) is still much smaller than that of piezoelectric ceramics, and the death of piezoelectric ceramics Weakness is brittle. In order to obtain the material which has both strong piezoelectricity and good softness and processing properties, the composite materials of the polymer and the piezoelectric ceramic have been studied, and the 3-3 composite of the polymer and the piezoelectric ceramic and 3-1 complex