Barium titanate/poly (vinylidene fluoride) nanocomposites with core–shell structure with high dielectric constant and temperature stability prepared via a cold sintering process
| Autor: | Li Biyuan, S. L. Kang, F. Wang, Jinglei Wang, Zhong Xinmin |
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| Rok vydání: | 2020 |
| Předmět: |
010302 applied physics
Nanocomposite Materials science Nanoparticle Sintering Dielectric Conductivity Condensed Matter Physics 01 natural sciences Atomic and Molecular Physics and Optics Electronic Optical and Magnetic Materials chemistry.chemical_compound chemistry 0103 physical sciences Barium titanate Dielectric loss Electrical and Electronic Engineering Composite material High-κ dielectric |
| Zdroj: | Journal of Materials Science: Materials in Electronics. 31:9284-9292 |
| ISSN: | 1573-482X 0957-4522 |
| DOI: | 10.1007/s10854-020-03468-7 |
| Popis: | In this study, a cold sintering process was used to prepare core–shell-structured barium titanate (BT)-based poly (vinylidene fluoride) (PVDF) nanocomposites with high performance. The surface of BT nanoparticles was covered with BT homogeneous sol (defined as BT@HGS). The dielectric constant of the BT@HGS/PVDF nanocomposites increased from 25.4 to 110.9, with the BT@HGS nanofillers increasing from 10 to 50 vol% at 1 kHz. BT@HGS nanoparticles with core–shell structures enhanced interface polarization, improved dielectric properties, and prevented ion conduction inside the composites, which reduced the loss of conductivity and inhibited dielectric loss. BT@HGS/PVDF nanocomposites additionally show excellent temperature stability at 25–150 °C, which is suitable for flexible electronics applications. The BT@HGS/PVDF nanocomposites with high dielectric constant and low dielectric loss demonstrate that the cold sintering process is a promising processing route for designing new high-performance nanocomposites. |
| Databáze: | OpenAIRE |
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