Citation: ZHANG Zhao, SHEN Da, XIONG Xiao-Ying, YANG Hui, ZHANG Qi-Long, SHEN Qian-Hong. Preparation and Dielectric Properties of Ag-Loaded KTa_1-xNb_xO₃-BaTiO₃ Particle Doped P(VDF-TrFE-CTFE) Composite[J]. Chinese Journal of Inorganic Chemistry, ;2020, 36(11): 2048-2054. doi: 10.11862/CJIC.2020.228 shu

Preparation and Dielectric Properties of Ag-Loaded KTa_1-xNb_xO₃-BaTiO₃ Particle Doped P(VDF-TrFE-CTFE) Composite

State Key Laboratory of Silicon Materials, School of Materials Science and Engineering, Zhejiang University, Hangzhou 310027, China

Corresponding author: ZHANG Qi-Long, mse237@zju.edu.cn
Received Date: 5 March 2020
Revised Date: 2 July 2020

Figures(9)

An Ag-loaded KTa_1-xNb_xO₃-BaTiO₃ composite (Ag/KTN-BT) was prepared by light reduction method and then introduced into the P(VDF-TrFE-CTFE) matrix. The Ag/KTN-BT nanoparticles were uniformly dispersed in the polymer matrix without obvious pores and cracks, and the obtained nanocomposite film exhibited good flexibility. The introduction of Ag nanoparticles, on the one hand, introduces additional interfaces in the polymer matrix, leading to enhanced interface polarization and the dielectric constant of the composite; on the other hand, due to the quantum size effect and coulomb blockage effect of the silver nanoparticles, the composite maintains low dielectric loss. Typically, the dielectric constant of the composite filled with 20% (volume fraction) Ag/KTN-BT reached 125 at 100 Hz, in contrast to 37 for pristine P(VDF-TrFE-CTFE) polymer. Moreover, the composite remained low dielectric loss 0.12. Compared with the KTN-BT-based composite, Ag/KTN-BT-based composites also showed better dielectric properties.
- Ag,
- polymer-based,
- composite,
- interfacial polarization,
- dielectric property
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Preparation and Dielectric Properties of Ag-Loaded KTa1-xNbxO3-BaTiO3 Particle Doped P(VDF-TrFE-CTFE) Composite

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通讯作者: 陈斌, bchen63@163.com

Preparation and Dielectric Properties of Ag-Loaded KTa_1-xNb_xO₃-BaTiO₃ Particle Doped P(VDF-TrFE-CTFE) Composite