High dielectric properties and thermal conductivity of the PVDF-based composites with a low filler content reinforced by BaTiO3@super-short MWCNT core-shell particles

doi:10.1007/s10854-021-07620-9

	High dielectric properties and thermal conductivity of the PVDF-based composites with a low filler content reinforced by BaTiO3@super-short MWCNT core-shell particles
	You, Yan-bin 1; Wang, Hai-yan 1; Li, Lan 3; Bai, Lin-rui 1; Dang, Zhi-Min 2
刊名	JOURNAL OF MATERIALS SCIENCE-MATERIALS IN ELECTRONICS
	2022
卷号	33 期号:7 页码:4268-4277
关键词	Barium titanate Dielectric losses Dielectric properties of solids Fillers Shells (structures) Thermal conductivity Average size BaTiO 3 Core/shell particles Dielectrics property Filler contents Filler loading High dielectrics MWCNT's P.V.D.F Super-short
ISSN号	0957-4522
DOI	10.1007/s10854-021-07620-9
英文摘要	In order to improve the dielectric properties and the thermal conductivity of the PVDF-based composites, the BaTiO3@super-short MWCNT (BT@SSCNT) particles were modulated by a SSCNT shell fabricated by MWCNT with the different types (S-MWCNT-1020, S-MWCNT-2040). The average size of these particles is about 300 nm. With the increase in the external diameter of MWCNT, the SSCNT content of the BT@SSCNT particles decreases. However, the sum proportions of which the diameter of the particles is not less than 295 nm have a distinct growth leading to that the distance between the neighboring particles shortens. The dielectric constants of the composites are more than 355 and 1500 (10(3) Hz) at 10 wt% and 60 wt% filler loading, respectively. Compared with the BT@SSCNT/PVDF-1020 composites, the dielectric constants of the BT@SSCNT/PVDF-2040 composites have a more stable frequency dependency in the range of 10(2) to 10(6) Hz. The value of the composite with 10 wt% BT@SSCNT loading maintains more than 250 at 10(6) Hz. The introduction of the shell of SSCNT with larger external diameter can offer the composites a more desirable combined action of dielectric mechanisms, including interfacial polarization and micro-capacitor effect. In addition, the varying SSCNT shells also have evident influence on dielectric loss, breakdown strength, and thermal conductivity. It is worth mentioning that the values of the BT@SSCNT/PVDF-2040 composites are 334 and 0.16 (10(4) Hz), 229 kV mm(-1), and 1.13 W (m K)(-1) at 10 wt% filler loading, respectively. This work could extend the strategies for building the core-shell particles to develop dielectric nanocomposites.
WOS研究方向	Engineering ; Materials Science ; Physics
语种	英语
出版者	SPRINGER
WOS记录号	WOS:000742804800001
内容类型	期刊论文
源URL	[http://ir.lut.edu.cn/handle/2XXMBERH/154844]
专题	材料科学与工程学院石油化工学院
作者单位	1.Lanzhou Univ Technol, State Key Lab Adv Proc & Recycling Nonferrous Me, Lanzhou 730050, Peoples R China; 2.Tsinghua Univ, Dept Elect Engn, State Key Lab Power Syst, Beijing 100084, Peoples R China 3.Lanzhou Univ Technol, Coll Petrochem Technol, Lanzhou 730050, Peoples R China;
推荐引用方式 GB/T 7714	You, Yan-bin,Wang, Hai-yan,Li, Lan,et al. High dielectric properties and thermal conductivity of the PVDF-based composites with a low filler content reinforced by BaTiO3@super-short MWCNT core-shell particles[J]. JOURNAL OF MATERIALS SCIENCE-MATERIALS IN ELECTRONICS,2022,33(7):4268-4277.
APA	You, Yan-bin,Wang, Hai-yan,Li, Lan,Bai, Lin-rui,&Dang, Zhi-Min.(2022).High dielectric properties and thermal conductivity of the PVDF-based composites with a low filler content reinforced by BaTiO3@super-short MWCNT core-shell particles.JOURNAL OF MATERIALS SCIENCE-MATERIALS IN ELECTRONICS,33(7),4268-4277.
MLA	You, Yan-bin,et al."High dielectric properties and thermal conductivity of the PVDF-based composites with a low filler content reinforced by BaTiO3@super-short MWCNT core-shell particles".JOURNAL OF MATERIALS SCIENCE-MATERIALS IN ELECTRONICS 33.7(2022):4268-4277.