▎ 摘　　要

Surface modified Fe50Ni50 nanoparticles (SMF)-Reduced graphene oxide (RGO) epoxy composites with enhanced microwave absorption properties were successfully prepared using a wet chemical method. The morphology, structure and microwave electromagnetic properties of the as-prepared composites were characterized by XRD, SEM, TEM and VSM. The SMF-RGO epoxy composites exhibit enhanced microwave absorption properties, which are attributed to the better impedance matching and enhanced microwave attenuation. For the SMF-RGO (3) composite, the minimum RL reaches -23.9 dB at 10.8 GHz with layer thickness of 3.0 mm, and the bandwidth of RL less than -10 dB can reach up to 4.3 GHz (from 8.8 to 13.1 GHz). It is believed that such composites are attractive candidates for new types of lightweight high performance microwave absorber. (C) 2015 Elsevier B.V. All rights reserved.