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- Title
Construction of multilayer carbon magnetic heterostructures on the surface of carbon fibers to improve the absorption performance.
- Authors
Jia, Hanxu; He, LiFen; Sun, Qilong; Ye, Wei; Long, Xiaoyun
- Abstract
This study utilizes the strong complexation effect of polydopamine on metal ions and constructs multilayer carbon magnetic heterostructures on the surface of carbon fibers through the in situ reduction method, thereby obtaining a new type of multilayer carbon‐based composite absorbing material. The absorption properties at different layers were analyzed and compared through various characterization methods. Finally, the double‐layer structure demonstrated outstanding electromagnetic wave absorption characteristics, exhibiting a wide effective absorption bandwidth of 7.24 GHz and robust absorption of −44.48 dB, all within a mere thickness of 3.5 mm. Therefore, excellent market prospects for this material are anticipated. Highlights: A multilayer carbon magnetic heterostructure absorbing material was constructed on micrometer‐scale carbon fibers. The test results show that a wide effective absorbing bandwidth of 7.24 GHz and a minimum reflection loss of −44.48 dB are obtained when the composite thickness is 3.5 mm.The prepared multilayer absorbing composites can adapt to a variety of application scenarios and have excellent application prospects in the industry.The self‐polymerization of dopamine and complexation of metal ions were used to construct multilayer absorbing materials, and the dielectric loss and magnetic loss capacity of the carbon fibers improved.
- Subjects
CARBON fibers; ELECTROMAGNETIC wave absorption; HETEROSTRUCTURES; MAGNETIC flux leakage; DIELECTRIC loss; ABSORPTION; HETEROJUNCTIONS
- Publication
Polymer Composites, 2024, Vol 45, Issue 10, p9119
- ISSN
0272-8397
- Publication type
Article
- DOI
10.1002/pc.28398