以具有电损耗性能的石墨烯(GO)和磁损耗性能的羰基铁(SCI)为吸波剂,以环氧树脂(EP)为基体,制备出具有双机制吸波性能的GO/SCI/EP复合材料,并通过SEM、XRD、TG、电阻率测试复合材料的形貌、结构、热稳定性、导电性,借助微波暗室及矢量网络分析仪分析材料的吸波性能并探究其吸波机理。结果表明,石墨烯、羰基铁的加入提高了复合材料的导电性和热稳定性。当石墨烯质量分数为10%、羰基铁质量分数为90%时,复合材料吸波性能最好,增大了阻抗匹配的性能,反射损耗最高可达-23.32 dB。

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.

岳萌(1999-),女,硕士生,研究方向为环氧吸波、增韧材料,941165209@qq.com;胡传群(1974-),男,博士,讲师,研究方向为功能复合材料,通讯联系人,hucqchem@mail.hbut.edu.cn。