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PES-g-BST/PEEK composites modified by surface grafting with high dielectric tunability
Liu, Shuhang Peng, Mingyu Xu, Xin Guo, Yiting Wu, Sichen Xu, Jie Baxter, Harry Yang, Bin Gao, Feng
Liu, Shuhang
Peng, Mingyu
Xu, Xin
Guo, Yiting
Wu, Sichen
Xu, Jie
Baxter, Harry
Yang, Bin
Gao, Feng
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Other Contributors
EPub Date
Publication Date
2023-11-25
Submitted Date
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Article - AAM
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Abstract
Ceramic/polymer composites have been widely utilized due to their outstanding dielectric and mechanical properties. The interfacial bonding between ceramic and organic phases has a significant effect on the properties of composites. Therefore, enhancing the interfacial bond strength has become a hot issue. In this work, a chemically modified PES-g-BST/PEEK composite was prepared via cold-pressing sintering. The chemical bond was constructed to connect one end of PES (polyether sulfone) with BST (barium strontium titanate) and the other end with PEEK (polyether ether ketone) by using 4,4′-Diaminodiphenylsulfone (DDS), which enhanced the interface combination between ceramic fillers and organic phase. The influence of the surface grafting method and the amount of DDS on the microstructure and dielectric characteristics of the PES-g-BST/PEEK composite was investigated, and the amount of DDS was optimized. The permittivity, dielectric tunable efficiency, and dielectric tunability of the composites were improved. A chemically modified PES-g-BST/PEEK composite with improved dielectric properties and high dielectric tunability was obtained. The dielectric tunability amounts to 38.16 % under a 7 kV/mm bias, accompanied by a low dielectric constant of 14.5 and a dielectric loss of 0.076 (1 kHz). This work provides a way of enhancing the interface bonding of ceramic/polymer composites to improve dielectric tunability.
Citation
Liu, S., Peng, M., Xu, X., Guo, Y., Wu, S., Xu, J., Baxter, H., Yang, B., & Gao, F. (2023). PES-g-BST/PEEK composites modified by surface grafting with high dielectric tunability. Journal of Materials Research and Technology, 27, 7895-7904. https://doi.org/10.1016/j.jmrt.2023.11.196
Publisher
Elsevier
Journal
Journal of Materials Research and Technology
Research Unit
DOI
10.1016/j.jmrt.2023.11.196
PubMed ID
PubMed Central ID
Type
Article
Language
Description
© <2023>. This manuscript version is made available under the CC-BY-NC-ND 4.0 license https://creativecommons.org/licenses/by-nc-nd/4.0/
Series/Report no.
ISSN
2238-7854
EISSN
2214-0697