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ACTA AERONAUTICAET ASTRONAUTICA SINICA ›› 2023, Vol. 44 ›› Issue (11): 427549-427549.doi: 10.7527/S1000-6893.2022.27549

• Material Engineering and Mechanical Manufacturing • Previous Articles    

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

Yongsheng YE1,2, Di DING2, Haihua WU1,2(), Enyi HE1,2, Shihao YIN2, Zhenglang HU2, Chao YANG2   

  1. 1.Graphite Additive Manufacturing Technology and Equipment Hubei Engineering Research Center,China Three Gorges University,Yichang  443002,China
    2.School of Machinery and Power,China Three Gorges University,Yichang  443002,China
  • Received:2022-05-31 Revised:2022-06-16 Accepted:2022-07-18 Online:2022-08-03 Published:2022-08-03
  • Contact: Haihua WU E-mail:wuhaihua@ctgu.edu.cn
  • Supported by:
    National Natural Science Foundation of China(51575313);Open Fund of Hubei Provincial Engineering Research Center of Graphite Additive Manufacturing Technology and Equipment(HRCGAM202106);Open Fund of Yichang Key Laboratory of Graphite Additive Manufacturing(YKLGAM202005)

Abstract:

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).

Key words: graphene, composite, absorbing mechanism, impedance matching, Fe3O4

CLC Number: