Fe/Fe_3C填充的碳纳米管复合材料的制备与微波吸收性质  

Growth and microwave absorbing properties of Fe/Fe_3C-filled carbon nanotube composites

作　　者：苏庆梅[1] 钟国[1] 李洁[1] 杜高辉[1] 

机构地区：[1]浙江师范大学物理化学研究所,浙江金华321004

出　　处：《功能材料》2011年第8期1492-1495,共4页Journal of Functional Materials

基　　金：国家自然科学基金资助项目(10904129);浙江省科技厅面上科研资助项目(2009C31G2030007)

摘　　要：利用化学气相沉积法,以乙醇为碳源,二茂铁为催化剂前驱物,对二氯苯为添加剂,制备了Fe/Fe3C纳米线填充的碳纳米管复合材料,并通过SEM、XRD、HRTEM等分析方法对产物的形貌和微结构进行了研究。实验结果表明对二氯苯对碳纳米管的填充起决定作用,产物中Fe/Fe3C纳米线填充率可达33%;使用该复合材料制备的吸波涂层在厚度为2mm、频率为4.5GHz时有强吸收峰,厚度增加时吸收峰往低频方向移动,表明此材料有望在低频段实现对电磁波的有效吸收。Fe/Fe3C-filled carbon nanotubes were prepared by a chemical vapor deposition process in which ethanol was used as carbon source,ferrocene was used as the catalyst precursor and dichlorobenzene was used as the additive.The morphology and microstructure of the synthesized products were examined using SEM,XRD,HRTEM,and so on.The results show that dichlorobenzene is critical for the filling of CNTs,and the filling ratio of Fe/Fe3C nanowires is as high as 33%.When the thickness of the CNTs absorber is 2mm,there is a peak of reflection loss at 4.5GHz.The peak of the reflection loss shifts to lower frequency when the thickness increases,showing that the as-grown CNTs is promising as an effective absorber in low frequency.

关 键 词：碳纳米管 填充 化学气相沉积法 Fe/Fe3C纳米线 

分 类 号：TB303[一般工业技术—材料科学与工程]