北京交通大学学报2011，Vol.35Issue(6)：112-116,5.
Sm2O3填充碳纳米管/磁性金属微粉双层吸波复合材料的制备与吸波性能
Preparation and microwave absorbing properties of rare-earth Sm2O3 filled carbon nanotubes/magnetic metal/epoxy double-layer absorbing composite
摘要
Abstract
Rare-Earth Sm2O3filled carbon nanotubes were prepared by wet chemistry solution method.According to the transmission line theory and impedance matching principal, a kind of double-layer absorbing composite was prepared. The surface layer and last layer are composed of Sm2O3 filled multi-walled carbon nanotubes (Sm2O3-MWCNTs) and the magnetic metal powder, respectively. Sn2O3-MWCNTs and magnetic metal powder were characterized by TEM, SEM and XRD. The microwave absorbing properties of the composites were measured in the frequency range of 2~ 18 GHz. Compared with the unfilled MWCNTs, the absorbing peaks of Sm2O3-MWCNTs moves to the higher frequency and the absorbing bandwidth was widened. The results of experimental measurement show that the double-layer composite has good absorbing performance in low frequency region. There are two absorbing peaks in the frequency range of 2~ 18 GHz with the matching thickness of 5.0 mm, correspondingly, the bandwidth below-10 dB and -5 dB is 0.98 GHz and 6.46 GHz.关键词
稀土/多壁碳纳米管/磁性金属微粉/双层结构复合材料/吸波性能Key words
rare-earth/ multi-walled carbon nanotubes/ magnetic metal powder/ double-layer composites/ microwave absorbing properties分类
信息技术与安全科学引用本文复制引用
张拦,卫应亮,王璐..Sm2O3填充碳纳米管/磁性金属微粉双层吸波复合材料的制备与吸波性能[J].北京交通大学学报,2011,35(6):112-116,5.基金项目
河南省教育厅自然科学研究计划项目资助(2011A430017) （2011A430017）
洛阳理工学院引进人才专项科研基金项目资助(2009BZ20) （2009BZ20）
