期刊
JOURNAL OF ALLOYS AND COMPOUNDS
卷 693, 期 -, 页码 1-8出版社
ELSEVIER SCIENCE SA
DOI: 10.1016/j.jallcom.2016.09.178
关键词
Polymer, elastomers, and plastics; Surfaces and interfaces; Metals; Dielectric response; Heat conduction
资金
- National Science Foundation of China [51577154, 21276207, U1203292]
- Shaanxi Provincial Natural Science Foundation, China [2016JM5014, 2014JM2043]
- Scientific Research Program Funded by Shaanxi Provincial Education Commission [14JK1485, 15JK1451]
- Key Laboratory of Engineering Dielectrics and Its Application, Ministry of Education, Harbin University of Science and Technology [JZK201301]
To suppress the high loss of nickel (Ni)/poly(vinylidene fluoride) (PVDF) while remaining high dielectric constant (k) near the percolation threshold. In this study, core-shell structured Ni (Ni@ NiO) particles were prepared by heat treatment of raw Ni powder under air atmosphere and incorporated into PVDF to prepare Ni@ NiO/PVDF dielectric composites. The morphological, dielectric properties and thermal conductivity of the composites are characterized. The results indicate that compared with the raw Ni reinforced PVDF composites, the Ni@ NiO particles endow PVDF with a high-k and rather low dissipation factor owing to the presence of NiO shell between Ni core and PVDF which serves as an interlayer between the Ni cores preventing them from contacting with each other. Additionally, the Ni@ NiO/PVDF composites still possess a high thermal conductivity. Therefore, the as-prepared Ni@ NiO/PVDF composites possess high-k but low loss, high thermal conductivity, making them promising for the industrial application as embedded capacitors. (C) 2016 Elsevier B.V. All rights reserved.
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