PES-g-BST/PEEK composites modified by surface grafting with high dielectric tunability

Shuhang Liu; Mingyu Peng; Xin Xu; Yiting Guo; Sichen Wu; Jie Xu; Harry Baxter; Bin Yang; Feng Gao

Journal of Materials Research and Technology (Nov 2023)

PES-g-BST/PEEK composites modified by surface grafting with high dielectric tunability

Shuhang Liu,
Mingyu Peng,
Xin Xu,
Yiting Guo,
Sichen Wu,
Jie Xu,
Harry Baxter,
Bin Yang,
Feng Gao

Affiliations

Shuhang Liu: State Key Laboratory of Solidification Processing, MIIT Key Laboratory of Radiation Detection Materials and Devices, USI Institute of Intelligence Materials and Structure, School of Materials Science and Engineering, Northwestern Polytechnical University, 710072, Xi'an, Shaanxi, PR China
Mingyu Peng: State Key Laboratory of Solidification Processing, MIIT Key Laboratory of Radiation Detection Materials and Devices, USI Institute of Intelligence Materials and Structure, School of Materials Science and Engineering, Northwestern Polytechnical University, 710072, Xi'an, Shaanxi, PR China
Xin Xu: Department of Orthopedic Trauma, Honghui Hospital of Xi’an Jiaotong University, 710054, Xi’an, Shaanxi, PR China; Corresponding author.
Yiting Guo: State Key Laboratory of Solidification Processing, MIIT Key Laboratory of Radiation Detection Materials and Devices, USI Institute of Intelligence Materials and Structure, School of Materials Science and Engineering, Northwestern Polytechnical University, 710072, Xi'an, Shaanxi, PR China
Sichen Wu: State Key Laboratory of Solidification Processing, MIIT Key Laboratory of Radiation Detection Materials and Devices, USI Institute of Intelligence Materials and Structure, School of Materials Science and Engineering, Northwestern Polytechnical University, 710072, Xi'an, Shaanxi, PR China
Jie Xu: State Key Laboratory of Solidification Processing, MIIT Key Laboratory of Radiation Detection Materials and Devices, USI Institute of Intelligence Materials and Structure, School of Materials Science and Engineering, Northwestern Polytechnical University, 710072, Xi'an, Shaanxi, PR China
Harry Baxter: Faculty of Science and Engineering, University of Chester, Parkgate Road, Chester, CH1 4BJ, United Kingdom
Bin Yang: Faculty of Science and Engineering, University of Chester, Parkgate Road, Chester, CH1 4BJ, United Kingdom
Feng Gao: State Key Laboratory of Solidification Processing, MIIT Key Laboratory of Radiation Detection Materials and Devices, USI Institute of Intelligence Materials and Structure, School of Materials Science and Engineering, Northwestern Polytechnical University, 710072, Xi'an, Shaanxi, PR China; Corresponding author.

Journal volume & issue: Vol. 27
pp. 7895 – 7904

Abstract

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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.

Published in Journal of Materials Research and Technology

ISSN: 2238-7854 (Print); 2214-0697 (Online)
Publisher: Elsevier
Country of publisher: Netherlands
LCC subjects: Technology: Mining engineering. Metallurgy
Website: https://www.journals.elsevier.com/journal-of-materials-research-and-technology/

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