Electromagnetic Wave Absorption and Mechanical Properties of CNTs@GN@Fe3O4/PU Multilayer Composite Foam
| Autor: | Chunfu Gao, Xinsheng He, Ye Fengchao, Shuxin Wang, Zhang Guang |
|---|---|
| Jazyk: | angličtina |
| Rok vydání: | 2021 |
| Předmět: |
Technology
Materials science Composite number chemistry.chemical_element Dielectric Carbon nanotube Electromagnetic radiation law.invention law multilayer magnetic foam General Materials Science Composite material CNTs@GN@Fe3O4/PU Microscopy QC120-168.85 absorbing performance mechanical behavior Scattering Graphene QH201-278.5 Polarization (waves) Engineering (General). Civil engineering (General) TK1-9971 chemistry Descriptive and experimental mechanics Electrical engineering. Electronics. Nuclear engineering TA1-2040 Carbon |
| Zdroj: | Materials, Vol 14, Iss 7244, p 7244 (2021) Materials; Volume 14; Issue 23; Pages: 7244 |
| ISSN: | 1996-1944 |
| Popis: | With the development of intelligent communications and stealth technology in the military field, electromagnetic wave pollution cannot be ignored, and absorbing materials have entered people’s field of vision and gradually become a research hotspot. The ideal absorbing material should have the characteristics of “strong, wide, thin, and light”, but a single absorbing material often cannot meet the above conditions. At present, absorbing metal powder combined with two-dimensional carbon nanomaterials (such as carbon nanotubes, graphene, etc.) has became a trend. This article focus on a three-layer composite of Fe3O4, Carbon nanotubes@ Fe3O4, Carbon nanotubes@Graphene nano-platelets@ Fe3O4, which was synthesized by solvothermal method. The results show that the electromagnetic wave absorption performance of the three-layer foam at a thickness of 3.0 mm is more excellent. The minimum of RL can reach −67.0 dB, and the effective bandwidth is above 5.0 GHz. All this is due to the synergy of dielectric and magnetic loss between Fe3O4, CNTs, and GN, the increase of interface polarization and the path of electromagnetic wave reflection and scattering by three-layer foam. |
| Databáze: | OpenAIRE |
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