▎ 摘　　要

Asphalt carbon coated graphene/magnetic NiFe2O4 modified multi-wall carbon nanotube (MWCNT) composites were synthesized. As EM wave absorbers, the composites were mixed with paraffin, which exhibit significant microwave absorption properties. The maximum reflection loss is 45.9 dB at 4.6 GHz with a thickness of 3.2 mm. In addition, there is a strong wave -absorbing peak at 6.2 GHz, and the corresponding RL is up to 38.9dB. The bandwidth corresponding to the RL values below 10 dB is 14 GHz (from 4GHz to 18GHz) with thickness in the range of 1.2mm-4 mm, highlighting its potential for microwave absorbing applications. (C) 2017 Elsevier B.V. All rights reserved.