碳纳米管/氮化硅纳米复合材料的制备及吸波性能研究  

Study on Preparation and Microwave Absorption Properties of Carbon Nanotubes/Silicon Nitride Nanocomposites

作　　者：袁浩泽 吉小利[1] 梁英杰 马倩倩 YUAN Haoze;JI Xiaoli;LIANG Yingjie;MA Qianqian(School of Chemical Engineering,Anhui University of Science and Technology,Huai′nan 232001,China)

机构地区：[1]安徽理工大学化学工程学院,安徽淮南232001

出　　处：《河南化工》2022年第11期19-23,共5页Henan Chemical Industry

基　　金：国家自然科学研究项目(51707003);安徽理工大学2015年校引进人才基金资助项目(11470)。

摘　　要：通过对纳米Si_(3)N_(4)表面改性和对MWCNTs表面的酸化处理,使用溶剂热法制备出Si_(3)N_(4)/MWCNTs纳米复合材料。通过SEM、XRD、FT-IR等研究了复合材料的结构以及形貌,并用矢量网络分析仪测量其电磁参数。结果表明:制备的纳米复合材料在样品厚度为1.5 mm有效吸频带的宽度最宽,可以达到5.38 GHz。在样品厚度为4.0 mm时,在4.24 GHz处反射损耗RL值可以达到-41.73 dB,有效带宽为1.81 GHz。Through surface modification of nano-Si_(3)N_(4) and surface acidification treatment of MWCNTs,Si_(3)N_(4)/MWCNTs nanocomposites are prepared by solvothermal method.The structure and morphology of the composites are studied by SEM,XRD and FT-IR,and their electromagnetic parameters are measured by vector network analyzer.The results show that the effective band width of the prepared nano-composite is the widest when the sample thickness is 1.5 mm,which can reach 5.38 GHz.When the sample thickness is 4.0 mm,the RL value of reflection loss at 4.24 GHz can reach-41.73 dB,and the effective bandwidth is 1.81 GHz.

关 键 词：溶剂热法 纳米Si_(3)N_(4) MWCNTS 表面改性 吸波性能 

分 类 号：TB383[一般工业技术—材料科学与工程]