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Indexed by:Journal Papers

Date of Publication:2021-07-21

Journal:MATERIALS RESEARCH EXPRESS

Volume:6

Issue:12

ISSN No.:2053-1591

Key Words:Fe3O4/MWCNTs; microwave attenuation model; reflectivity; ball milling

Abstract:The multi-walled carbon nanotubes (MWCNTs) /ferriferous oxide (Fe3O4) nano-composites have important research value in electromagnetic wave absorbing. Firstly, MWCNTs and nano-Fe3O4 particles were ball-milled by a ball mill to obtain Fe3O4/MWCNTs nanocomposites. The Fe3O4/MWCNTs nanocomposites were characterized by XRD, TEM and network vector analyzer. Finally, a model of microwave attenuation mechanism for Fe3O4/MWCNTs nanocomposites was established. The reflectivity of Fe3O4/MWCNTs nanocomposites was calculated and compared with the transmission model of electromagnetic wave incident vertically into Fe3O4/MWCNTs powder in free space random dispersion space. The results of the two models are almost identical, which provide a reference for predicting the microwave absorbing properties of Fe3O4/MWCNTs nanocomposites.