Hierarchical Polyimide Nonwoven Fabric with Ultralow-Reflectivity Electromagnetic Interference Shielding and High-Temperature Resistant Infrared Stealth Performance
Designing and fabricating a compatible low-reflectivity electromagnetic interference (EMI) shielding/high-temperature resistant infrared stealth material possesses a critical significance in the field of military. Hence, a hierarchical polyimide (PI) nonwoven fabric is fabricated by alkali treatment, in-situ growth of magnetic particles and "self-activated" electroless Ag plating process. Especially, the hierarchical impedance matching can be constructed by systematically assembling Fe<sub>3</sub>O<sub>4</sub>/Ag-loaded PI nonwoven fabric (PFA) and pure Ag-coated PI nonwoven fabric (PA), endowing it with an ultralow-reflectivity EMI shielding performance. In addition, thermal insulation of fluffy three-dimensional (3D) space structure in PFA and low infrared emissivity of PA originated from Ag plating bring an excellent infrared stealth performance. More importantly, the strong bonding interaction between Fe<sub>3</sub>O<sub>4</sub>, Ag, and PI fiber improves thermal stability in EMI shielding and high-temperature resistant infrared stealth performance. Such excellent comprehensive performance makes it promising for military tents to protect internal equipment from electromagnetic interference stemmed from adjacent equipment and/or enemy, and inhibit external infrared detection.
Authors
- Yan Li (ORCID: https://orcid.org/0009-0009-1821-545X)
- Zixuan Wang (ORCID: https://orcid.org/0000-0002-6362-9274)
- Shuangshuang Li (ORCID: https://orcid.org/0000-0002-2514-0750)
- Penglun Zheng (ORCID: https://orcid.org/0000-0002-8081-2636)
- Mingyang Zhu
- Zaiyin Hu (ORCID: https://orcid.org/0009-0005-3242-446X)
- Yezi Lu
- Zicheng Wang (ORCID: https://orcid.org/0000-0002-8105-6908)
- Xinwei Tang (ORCID: https://orcid.org/0009-0007-1422-6616)
- Tianxi Liu (ORCID: https://orcid.org/0000-0001-7550-5941)
Institutions
- Jiangnan University (CN)
- Guizhou Aerospace Power Science & Tech (China) (CN)
- Civil Aviation Flight University of China (CN)
Publication Details
- Journal
- Nano-Micro Letters
- Published
- 2024-12-03
- DOI
- https://doi.org/10.1007/s40820-024-01590-3
- Citations
- 64
- Primary Topic
- Electromagnetic wave absorption materials
- Type
- article
- Field-Weighted Citation Impact
- 7.55
Funders
- National Natural Science Foundation of China
- Fonds Wetenschappelijk Onderzoek
- Shanghai Municipal Education Commission
- Vlaamse regering