利用水热法制备海胆状MnO₂及海胆状MnO₂/RGO复合吸波材料。FT-IR表明，石墨烯被还原并成功与海胆状MnO₂复合；XRD测试结果表明，海胆状MnO₂晶型结构属于β-MnO₂；SEM分析结果表明，海胆状MnO₂的直径为3~5 μm。对比MnO₂、RGO和海胆状MnO₂/RGO在0~18 GHz波段的电磁参数和反射率结果表明，复合材料的吸波性能得到了显著提高，厚度1.5 mm海胆状MnO₂/RGO具有最佳的反射损耗，在17.1 GHz时达到-19.2 dB，同时材料片材厚度增加，反射损失峰会低频移动。

Urchin-like MnO₂ and urchin-like MnO₂/RGO composite microwave absorbing materials are prepared by the hydrothermal method.The FT-IR detection shows that graphene is reduced successfully and forms composite materials with urchin-like MnO₂.XRD detection shows that the crystal structure of urchin-like MnO₂ belongs to β-MnO₂.SEM analysis shows that urchin-like MnO₂ has a diameter of 3-5 μm.The electromagnetic parameters and reflectivities of MnO₂,RGO and urchin-like MnO₂/RGO composite material in the band range of 0-18 GHz are compared,showing that the microwave absorbing properties of MnO₂/RGO composite material is improved significantly.The urchin-like MnO₂/RGO with a thickness of 1.5 mm has the best reflection loss which reaches -19.2 dB at 17.1 GHz.As the thickness of MnO₂/RGO composite material increases,the reflection loss peak will move towards the low frequency direction.

黄海波(1992-),男,硕士研究生,研究方向为纺织品功能整理及生态加工,jshhb1@163.com