Robust Single-Walled Carbon Nanotube-Coated Aramid Fibers with Tunable Conductivities for Broadband Radar Absorption in Honeycomb Structures
Single-walled carbon nanotubes (SWNTs), renowned for their high strength and electromagnetic properties, provide a potential solution for next-generation honeycomb-structured radar-absorbing materials (HRAMs). However, the integration of SWNTs into HRAMs is hindered by challenges including poor dispersion, wash-off loss, and the absence of scalable, compatible fabrication methods. Herein, we address these challenges by synthesizing tunable conductive SWNT-coated aramid fibers (SWNT-AF) via a continuous dip-coating method and integrating them into aramid paper-based composites (APBC) to fabricate HRAMs. The SWNT-AF serve as both structural reinforcements and dielectric loss centers within APBC, avoiding direct dispersion of SWNTs into the pulp and thereby mitigating agglomeration and wash-off loss. The optimized APBC, reinforced with these tailored fibers, exhibit improved dielectric properties, resulting in enhanced microwave absorption performance. The fabricated HRAMs achieve an effective absorption bandwidth of 14.8 GHz (2.0-18.0 GHz) with an ultralow SWNT loading of 0.2 wt % and a thin thickness of only 30 mm, demonstrating a reflection loss of -47.78 dB. These results highlight the potential of SWNT-AF as lightweight, broadband radar-absorbing materials for stealth applications.
Authors
- Jian Hu (ORCID: https://orcid.org/0000-0003-4739-0520)
- Xin Gao (ORCID: https://orcid.org/0000-0001-5360-0796)
- Hao He (ORCID: https://orcid.org/0000-0001-9673-1331)
- Jinhui Yang (ORCID: https://orcid.org/0000-0002-9381-1560)
- Kun Jiao (ORCID: https://orcid.org/0000-0003-1831-9696)
- Huihui Tian (ORCID: https://orcid.org/0000-0002-9015-4817)
- Yi Wang (ORCID: https://orcid.org/0000-0002-0472-4554)
- Jin Long (ORCID: https://orcid.org/0000-0002-9601-724X)
- Quanfen Guo
- Xiaomeng Ren (ORCID: https://orcid.org/0000-0003-1526-5557)
- Jianbo Yin (ORCID: https://orcid.org/0000-0001-6610-3916)
- Jin Zhang (ORCID: https://orcid.org/0000-0003-3731-8859)
- Sicheng Liu (ORCID: https://orcid.org/0009-0006-1590-2439)
- Yao Cheng
- Jiayi Liu (ORCID: https://orcid.org/0000-0002-6010-9492)
Institutions
- Peking University (CN)
- Ningxia University (CN)
- Beijing Graphene Institute (CN)
- Beijing National Laboratory for Molecular Sciences (CN)
- 3S Photonics (France) (FR)
- Center for Interdisciplinary Studies (IN)
- Green Chemistry (PL)
- South China University of Technology (CN)
Publication Details
- Journal
- ACS Nano
- Published
- 2025-06-02
- DOI
- https://doi.org/10.1021/acsnano.5c05311
- Citations
- 17
- Primary Topic
- Electromagnetic wave absorption materials
- Type
- article
- Field-Weighted Citation Impact
- 7.27
Funders
- National Natural Science Foundation of China
- Chinese Academy of Sciences
- Ministry of Science and Technology of the People's Republic of China
- Peking University
- Science, Technology and Innovation Commission of Shenzhen Municipality
- Beijing National Laboratory for Molecular Sciences