细菌纤维素在一定温度下碳化,得到一种三维网状结构的纳米碳化纤维(CBC),利用X射线衍射仪、拉曼光谱仪和透射电子显微镜对这种新型碳纤维进行了分析表征.将CBC与石蜡按一定比例复合,采用矢量网络分析仪在0.1～18 GHz范围处测试了其电磁参数,发现此复合材料具有较大的介电常数实部和虚部,特别是在频率较低时,具有很大的介电损耗.将少量CBC与Fe3O4纳米颗粒复合,可极大地改善磁性颗粒的微波吸收性能,当样品厚度为1.2 mm时,反射损耗(RL)最小值从-2 dB降至-21 dB.
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