Characterization and performance of plate-like Ba0.6Sr0.4TiO3/Poly (vinylidene fluoride - trifluoroethylene -chlorotrifluoroethylene) composites with high permittivity and low loss

被引：20

作者：

Guo, Yiting ^{[1
]}

Meng, Nan ^{[2
]}

Zhang, Yiming ^{[3
]}

Xu, Jie ^{[1
,4
]}

Pawlikowska, Emilia ^{[5
]}

Wu, Changying ^{[6
]}

Szafran, Mikolaj ^{[5
]}

Gao, Feng ^{[1
]}

机构：

[1] Northwestern Polytech Univ, State Key Lab Solidificat Proc, MIIT Key Lab Radiat Detect Mat & Devices,Sch Mat, USI Inst Intelligence Mat & Struct,NPU QMUL Joint, Xian 710072, Shaanxi, Peoples R China

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

[3] Nanjing Tech Univ, Coll Urban Construct, Nanjing 211816, Jiangsu, Peoples R China

[4] Northwestern Polytech Univ Shenzhen, Res & Dev Inst, Shenzhen 518057, Peoples R China

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

[6] Northwestern Polytech Univ, Sch Elect & Informat, Xian 710072, Shaanxi, Peoples R China

来源：

POLYMER | 2020年 / 203卷

基金：

中国国家自然科学基金;

关键词：

PVDF-based composites; Dielectricity; Tunability; Dielectric breakdown strength; Dielectric tunable theoretical model; ENHANCED DIELECTRIC PERMITTIVITY; ENERGY DENSITY; NANOCOMPOSITES; FILMS; FABRICATION; TUNABILITY; CONSTANT; BEHAVIOR; MATRIX;

D O I：

10.1016/j.polymer.2020.122777

中图分类号：

O63 [高分子化学（高聚物）];

学科分类号：

070305 ; 080501 ; 081704 ;

摘要：

Plate-like Ba0.6Sr0.4TiO3/Poly (vinylidene fluoride - trifluoroethylene -chlorotrifluoroethylene) (P-BST)/P(VDF-TrFE-CTFE) functional composite films were prepared via a tape casting method. All samples have textured microstructure, and the orientation degree of the composites is above 50%. Though pure terpolymer has a low dielectric permittivity (20.4) and a high loss (0.52), the introduction of ceramic particles can effectively enhance its permittivity as well as decrease the loss. The composite filled with 40 vol% ceramic fillers showed a high permittivity of 88.3 as well as a low loss of 0.056 accompanying with a high dielectric tunability about 30%. Additionally, the dielectric tunable theoretical model of the composite was investigated. The functional relationship between phenomenological coefficient ratio beta(1)/beta(2) and the ceramic content was obtained. The final results indicate that the value of beta(1)/beta(2) is inversely proportional to the ceramic phase content, as opposed to the composites matrix's dielectric constant which cannot be tuned by the electric field.

引用

页数：10

共 45 条

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