聚偏氟乙烯
压电
材料科学
氟化物
极化(电化学)
压电系数
兴奋剂
复合材料
复合数
矫顽力
液晶
化学工程
聚合物
光电子学
无机化学
物理化学
凝聚态物理
化学
物理
工程类
作者
Weitao Pang,Zhiwei Ye,Juan Yi,Shixian Zhang,Junyu Chen,Yuheng Fu,Yibo Zhang,Changwei Ding,Chuanxi Xiong
摘要
A poly(vinylidene fluoride)-based composite film with higher piezoelectric properties was prepared by the solvent mixing method of adding liquid crystal small molecules to create defects among polyvinylidene fluoride (PVDF) molecular chains. The composite obtained by simple uniaxial stretching and thermal polarization exhibits higher piezoelectric properties (d33 = 29.0 pC/N) than neat PVDF (d33 = 24.3 pC/N). The defects reduce the grain size of PVDF to some extent, thus reducing the coercivity field of PVDF from 64.6 to 58.1 MV/m. This strategy could endow PVDF with higher piezoelectric coefficient and lower polarization field, which is attractive for piezoelectric applications.
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