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Date of Publication:2015-01-01

Journal:材料研究学报

Volume:29

Issue:2

Page Number:81-86

ISSN No.:1005-3093

Abstract:Fe-nanoparticles (NPs)/ carbon fibers (CF)/epoxy resin (EP) based
   composites were designed and fabricated. The microwave absorbers Fe-NPs
   were prepared by the direct current (DC) arc-discharge plasma method and
   modified with silane coupling agent KH550. The reflection losses of
   composites were measured in the frequency range of 2-18 GHz and the
   effects of Fe-NPs, CF and the geometry feature of test plates on the
   microwave absorbing properties were investigated. Results show that
   reflection loss peaks appear at low frequency and the microwave
   absorbing properties are enhanced due to the addition of CF. With the
   increasing mass fraction of Fe-NPs the microwave dissipation increases
   and the reflection loss peaks move towards the low frequency. The
   concentration gradient of Fe-NPs in EP matrix was caused by gravity
   during the preparation process and it causes reflection loss differences
   between the two surfaces of a plate, which is beneficial for microwave
   to enter the composite plate and be absorbed by properly setting the
   plate.

Note:新增回溯数据