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Full Length Article | Open Access

Broadband absorption performance of 3D-printed polyetheretherketone-based electromagnetic wave-absorbing composites

Lin BAIa,b,Nan CHANGbMeiying ZHAOa,cChi HOUa,c( )Yi CAOd( )Dichen LId
School of Aeronautics, Northwestern Polytechnical University, Xi’an 710072, China
Chengdu Aircraft Design and Research Institute, Chengdu 610091, China
Xi’an Key Laboratory of Advanced Structure Design and Application of Aircraft, Northwestern Polytechnical University, Xi’an 710072, China
State Key Laboratory for Manufacturing System Engineering, Xi’an Jiaotong University, Xi’an 710054, China

Peer review under responsibility of Editorial Committee of CJA.

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Abstract

The rapid development of additive manufacturing technology has offered a new avenue for designing and fabricating high wave-absorbing meta structures. In this study, the mechanical properties and broadband absorption performance of Poly-Ether-Ether-Ketone (PEEK)–based electromagnetic wave–absorbing composite materials was investigated. The high-performance polymer PEEK was used as the matrix, and the materials with electromagnetic wave loss, such as reduced graphene oxide, Carbonyl Iron (CI), and Flake CI (FCI), were used as absorbers. Based on the theory of impedance matching, a wave-absorbing structure with a gradual impedance gradient was designed and printed. The test results showed that at the 2.0–18.0 GHz frequency band, the coverage rate of the effective absorption bandwidth was up to 72.0%, the average optimal reflectivity was –18.09 dB, and the wide-angle absorption range was 0°–30°. The advantages of additive manufacturing technology in designing and fabricating wave-absorbing structures are presented, demonstrating that the technology is an effective method for creating broadband absorbing structures.

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Chinese Journal of Aeronautics
Pages 547-558
Cite this article:
BAI L, CHANG N, ZHAO M, et al. Broadband absorption performance of 3D-printed polyetheretherketone-based electromagnetic wave-absorbing composites. Chinese Journal of Aeronautics, 2024, 37(8): 547-558. https://doi.org/10.1016/j.cja.2024.06.009

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Received: 20 September 2023
Revised: 13 November 2023
Accepted: 17 December 2023
Published: 15 June 2024
© 2024 Chinese Society of Aeronautics and Astronautics.

This is an open access article under the CC BY-NC-ND license (http://creativecommons.org/licenses/by-nc-nd/4.0/).

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