Graphene(GO)with electrical loss performance and carbonyl iron(SCI)with magnetic loss performance are used as absorbers,and epoxy resin(EP)is used as the matrix to prepare GO/SCI/EP composite materials with dual mechanism wave-absorption performance.The morphology,structure,thermal stability,and conductivity of the composite materials are tested by means of SEM,XRD,TG,and electrical resistivity.The wave-absorption performance and mechanism of the composites are analyzed by means of microwave anechoic chamber and coaxial ring network vector analyzer.It is indicated by the results that the addition of graphene and carbonyl iron improves the conductivity and thermal stability of the composites.As the content of graphene is 10 wt.％and the content of carbonyl iron is 90 wt.％,the composite material has the best wave-absorption performance,with a maximum reflection loss of-23.32 dB and an enhanced impedance matching performance.
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