Microstructure and dielectric properties of sub-micron hollow sphere (Ba0.6 Sr0.4)TiO3 /PVDF compositesInspec keywordsOther keywords

被引：14

作者：

Guo, Yiting ^{[1
]}

Zhang, Kena ^{[1
]}

Meng, Nan ^{[2
]}

Wu, Wanli ^{[1
]}

Wang, Yujian ^{[1
]}

Xu, Jie ^{[1
]}

Pawlikowska, Emilia ^{[3
]}

Szafran, Mikolaj ^{[3
]}

Gao, Feng ^{[1
]}

机构：

[1] Northwestern Polytech Univ, Dept Chem Technol, State Key Lab Solidificat Proc,Sch Mat Sci & Engn, MIIT Key Lab Radiat Detect Mat & Devices,USI Inst, Xian 710072, Peoples R China

[2] Queen Mary Univ London, Dept Chem Technol, Sch Engn & Mat Sci, London E1 4NS, England

[3] Warsaw Univ Technol, Fac Chem, Noakowskiego 3, PL-00664 Warsaw, Poland

来源：

IET NANODIELECTRICS | 2019年 / 2卷 / 04期

基金：

中国国家自然科学基金;

关键词：

nanofabrication; electric breakdown; nanoparticles; barium compounds; crystal microstructure; tape casting; dielectric losses; strontium compounds; filled polymers; powders; nanocomposites; permittivity; particle size; HS-BST particles; sub-micron hollow sphere; dielectric tunability; 0-dimensional spherical particles; template-assisted method; HS-BST-poly(vinylidene fluoride) composites; tape casting method; particle size effects; energy storage properties; PVDF matrix; agglomeration; dielectric constant; dielectric loss; breakdown strength; inorganic-organic system; shape factor; size; 0; 44 mum to 2; 57; mum; 40; 0 nm to 500; nm; (Ba-0 6 Sr-0 4)TiO3; BA0.6SR0.4TIO3/POLY(VINYLIDENE FLUORIDE) COMPOSITES; ENERGY DENSITY; NANOCOMPOSITES; NANOPARTICLES; FABRICATION; TUNABILITY; CONSTANT; LAYER;

D O I：

10.1049/iet-nde.2019.0013

中图分类号：

TM [电工技术]; TN [电子技术、通信技术];

学科分类号：

0808 ; 0809 ;

摘要：

Hollow sphere (Ba-0.6 Sr-0.4)TiO3 (HS-BST) powders with sub-micron size and different shell thickness were synthesised through template-assisted method. HS-BST/poly(vinylidene fluoride) (PVDF) composites were prepared using tape casting method. The effects of particle size and shell thickness of HS-BST on the microstructure, dielectric tunability, and energy storage properties of HS-BST/PVDF composites were investigated. Results showed that all HS-BST particles were uniformly dispersed in PVDF matrix without agglomeration. With decreasing the size of HS-BST particles, the dielectric constant and loss of HS-BST/PVDF composites decreased, while the breakdown strength initially decreased and then increased. In addition, the theoretical model of the dielectric tunability of inorganic/organic system related to the shape factor (n) of inorganic particles was used to simulate and n value of 0-dimensional spherical particles was estimated. For HS-BST/PVDF composite, the n in the model was 2-2.5, corresponding to HS-BST particles with a diameter ranging from 0.44 to 2.57 mu m, and a shell thickness ranging from 40 to 500 nm.

引用

页码：135 / 141

页数：7

共 28 条

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