锶铁氧体包覆碳纳米管吸波材料的制备及表征  

Preparation and characterization of CNTs coated with strontium ferrite

作　　者：王文婷[1] 李巧玲[1] 常传波[1] 

机构地区：[1]中北大学理学院化学系,太原030051

出　　处：《化工新型材料》2011年第2期69-71,共3页New Chemical Materials

基　　金：国家自然基金(No.20571066;20871108);山西省高等学校优秀青年学术带头人计划资助

摘　　要：采用溶胶-凝胶法制备锶铁氧体包覆碳纳米管(CNTs)的吸波材料,并考察了碳纳米管含量对包覆后样品磁性能及吸波性能的影响。经TEM、XRD验证锶铁氧体成功地包覆在碳纳米管表面;从VSM图中可以看出6%CNTs-Sr-Fe11.5O19的磁性能最佳,矫顽力(Hc)为5916.13Oe。而经网络分析仪测定,5%CNTs-SrFe11.5O19的吸波性能最佳,最大反射率达-19.7dB。The carbon nanotubes （CNTs） coated with strontium ferrite was prepared by sol-gel method in this work. The crystalline peaks of graphite structure and strontium ferrite appeared together in the XRD figure has proved this method was available. Additionally, the effect of the appropriate proportion of CNTs in the composition on the magnetic and absorbing properties has been studied deeply. The results showed that 6% CNTs-SrFe11.5O19 had the best magnetic property with coercive force, 5916.13Oe. While the CNTs concentration was 5%, it had the maximum absorption value of -19.7dB in the higher microwave absorbing band, proving the best performance in absorbing property.

关 键 词：锶铁氧体 碳纳米管 包覆 磁性能 吸波性能 

分 类 号：TB383.1[一般工业技术—材料科学与工程]