聚苯胺与还原石墨烯复合材料的微波吸收性能

Microwave Absorption Property of Polyaniline/Reduced Grapheme

采用化学氧化法制备聚苯胺与还原石墨烯复合材料。复合材料的结构、晶型和电磁参数分别通过X射线衍射仪及HP8722ES型矢量网络分析仪进行表征、测试与分析。结果表明,同聚苯胺相比,聚苯胺与还原石墨烯复合材料的介电损耗明显增加。而且在复合材料中,石墨烯的含量越大,材料的微波吸收性能越好,在频率波段(9. 5～13. 4GHz)反射损耗均小于-10 d B,并在频率为11. 2 GHz时达到最大反射损耗-29. 69 d B。聚苯胺与还原石墨烯的复合使得材料的载流子迁移率变大,吸波特性得到改善。

The composite of polyaniline and reduced graphene was prepared through the chemical oxidation synthesis.The structure and electromagnetic parameters of the composites were investigated by XRD and HP8722ES network analyzer.The results show that the dielectric loss of the composite material is significantly higher than polyaniline.When the content of graphene is increased in the composite,the microwave absorption property of the material becomes better.The composite material has a much higher reflection loss and wider bandwidth than pure polyaniline in the frequency range(9.5-13.4 GHz).The combination of polyaniline and reduced grapheme improves the carrier mobility of the material and enhances microwave absorption property of the material consequently.