Graphene-enhanced Fe3O4/ethylcellulose composite microspheres with wave absorption properties

被引：0

作者：

Ye Y. ^{[1
,2
]}

Ding D. ^{[2
]}

Wu H. ^{[1
,2
]}

He E. ^{[1
,2
]}

Yin S. ^{[2
]}

Hu Z. ^{[2
]}

Yang C. ^{[2
]}

机构：

[1] Graphite Additive Manufacturing Technology and Equipment Hubei Engineering Research Center, China Three Gorges University, Yichang

[2] School of Machinery and Power, China Three Gorges University, Yichang

来源：

Hangkong Xuebao/Acta Aeronautica et Astronautica Sinica | 2023年 / 44卷 / 11期

基金：

中国国家自然科学基金;

关键词：

absorbing mechanism; composite; Fe[!sub]3[!/sub]O[!sub]4[!/sub; graphene; impedance matching;

D O I：

10.7527/S1000-6893.2022.27549

中图分类号：

学科分类号：

摘要：

Multi-component composite materials are conducive to the realization of high-efficiency，light-weight and broadband absorbing effects，and have important research and application value in the aerospace field. Reduced Graphene Oxide（rGO）-Fe3O4/Ethyl Cellulose（Ec）composite microspheres with Ec as the skeleton were prepared by emulsification reaction，and the physical structure，microscopic morphology and electromagnetic properties of the composite microspheres were characterized and analyzed by X-Ray Diffractometer（XRD），Raman Spectroscopy （Raman），Scanning Electron Microscopy（SEM）and Vector Network Analyzer（VNA）. The results show that the composite microspheres are ordered internally by the combination of Ec with rGO and Fe3O4，and Ec forms a rich porous structure，which enhances multiple reflection and scattering of microwaves. When the graphene content is 6. 6wt% and the thickness is 1. 8 mm，the minimum reflection loss（–30. 35 dB）is achieved at 14. 32 GHz，and the effective absorption bandwidth is 4. 88 GHz（12. 24–17. 12 GHz）. © 2023 AAAS Press of Chinese Society of Aeronautics and Astronautics. All rights reserved.

引用

共 42 条

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