Release time:2025-07-14  Hits:

• Key Words:ENHANCED MICROWAVE-ABSORPTION; COMPOSITES
• Abstract:In this work, EDC@Fe3O4 nanocomposite wave-absorbing materials were obtained by using egg as a precursor and SiO2 templates to prepare porous structures of egg-derived carbon, followed by a simple reflow calcination process. The microwave absorption properties show that the magnetic content enhances the magnetic loss of the composite material, while the abundant defects and voids on the surface of the egg-derived porous carbon form a network that extends the transmi path of the electromagnetic wave. The synergistic effect of Fe3O4 and the porous carbon optimizes the impedance matching of the material and improves its attenuation ability. As a result, the EDC@Fe3O4 nanocomposites exhibit excellent microwave absorption properties. The best sample at 9.12 GHz with the strongest reflection loss (RLmin) of -54.19 dB at a matched thickness of 2.46 mm, and the best effective absorption bandwidth (EAB) value of 5.68 GHz at a matched thickness of 2.03 mm. In this study, a biomass-based porous carbon nanocomposite with lightweight, thin thickness, wide bandwidth, and high absorption capacity is designed and prepared by novel strategies, and EDC@Fe3O4 nanocomposites are shown to have excellent microwave absorptive properties. magnetic composites with light weight, thin thickness, wide bandwidth and strong absorption ability, and elucidated the synergistic electromagnetic loss mechanism of EDC@Fe3O4 nanocomposites.
• Volume:235
• Issue:-
• Translation or Not:no