Copper calcium titanate(CCTO)/polyvinylidene fluoride(PVDF) composites were prepared by melt blending.The effects of CCTO filler content and frequency range (10-1～107Hz) on the microstructure,crystal phase,dielectric properties and conductivity of the composite were studied by SEM,XRD and dielectric impedance spectroscopy.The results showed that fillers were good dispersed in the polymer.The filler content had no effect on the crystal structure of composites,and its physical and chemical properties were stable.With the increase of filler content,the dielectric constant and conductivity of the composites increased.When the filler content was 60%,the dielectric properties reached the peak.In the low frequency range,the dielectric permittivity of the composites was more sensitive to the change of the filler contents,which could obtain better dielectric properties.The special dielectric properties of the composites at low frequency may had potential applications.
Xu Shihao, Xu Haiping, Zhang Tongshan, Liao Yangke, Yang Dandan, Wang Jingrong
. Preparation and wide frequency range dielectric property of CCTO/PVDF composite[J]. New Chemical Materials, 2021
, 49(5)
: 124
-128
.
DOI: 10.19817/j.cnki.issn 1006-3536.2021.05.028
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