Effects of Coupling Agents on the Structure and Electrical Properties of PZT-Poly (Vinylidene Fluoride) Composites

Applied Sciences

Liu Zhang¹  Zhiliang Shi¹  Rui Li¹  Jianzhong Pei¹ 

[1] Highway School, Chang’an University, Xi’an 710064, China;

关键词: PZT-PVDF;    coupling agents;    dielectric properties;    piezoelectric properties;   

DOI  :  10.3390/app6100282

来源: DOAJ

【 摘 要 】

Piezoelectricceramictransducer(PZT)-Poly(vinylidenefluoride)compositeswereprepared by the hot-pressing method. Before addition, PZT particles were firstly modified with two different coupling agents. The micromorphology, microstructure, dielectric properties, and piezoelectric propertiesofthecompositeswerecharacterizedandinvestigated. ResultsindicatedthatPZTparticles were homogeneously dispersed in the poly (vinylidene fluoride) (PVDF) matrix by the addition of coupling agents. The electric properties of PZT-PVDF composites with NDZ-101 were the best. Especially when the volume ratio of the titanate coupling agent NDZ-101 was 1%, the piezoelectric strain constant d33 of PZT-PVDF composites reached maximum value 19.23 pC/N; its relative dielectric constant εr was 67.45; at the same time its dielectric loss tan δ was 0.0766.

【 授权许可】

Unknown