摘要
通过混酸来纯化多壁碳纳米管(MWCNTs),采用静电纺丝技术制备了MWCNTs/Zn0.96Co0.04O复合纳米纤维。采用TGA、XRD、FT-IR、SEM和TEM等手段对产物进行了表征;利用矢量网络分析仪和IR-2红外发射率测试仪分别测试了产物的电磁参数和红外发射率,研究了MWCNTs的复合量对产物吸波性能和红外发射率的影响。结果表明:经600℃煅烧后得到的MWCNTs/Zn0.96Co0.04O复合纳米纤维直径约为160 nm。当MWCNTs的质量分数为6%时,产物具有最低红外发射率为0.61;当匹配厚度为1.5 mm时,产物在13.8 GHz处最低反射损耗值为–26.4 dB,小于–10 dB的吸收频段为11.8~15.8 GHz,有效吸收带宽为4.0 GHz。这使得MWCNTs/Zn0.96Co0.04O复合纳米纤维有望成为一种极具应用前景的红外/雷达兼容隐身材料。
Multi-walled carbon nanotubes(MWCNTs)were purified by concentrated nitric acid and sulfuric acid.MWCNTs/Zn0.96Co0.04O composite nanofibers were prepared through electrospinning and calcination technique.The crystalline phase and micromorphology of the samples were examined by TGA,XRD,FT-IR,SEM and TEM.Microwave absorption properties and infrared emissivity of MWCNTs/Zn0.96Co0.04O composite nanofibers were determined with a vector network analyzer and an IR-2 infrared emissivity analyzer,respectively.The results show that the average diameter of MWCNTs/Zn0.96Co0.04O composite nanofibers is about 160 nm.The lowest infrared emissivity of MWCNTs/Zn0.96Co0.04O composite nanofibers is 0.61,when the mass fraction of MWCNTs is 6%.When the matching thickness of MWCNTs/Zn0.96 Co0.04 O composite nanofibers is 1.5 mm,the microwave absorption properties are fine:the minimum reflectivity could reach–26.4 dB at 13.8 GHz,the frequency band with reflectivity less than–10 dB is 11.8~15.8 GHz,and the effective absorption band width is 4.0 GHz.It is possible that MWCNTs/Zn0.96 Co0.04 O composite nanofibers are used as a novel and promising infrared/radar compatible stealth material.
作者
汪心坤
程兆刚
赵芳
王建江
李泽
Wang Xinkun;Cheng Zhaogang;Zhao Fang;Wang Jianjiang;Li Ze(Shijiazhuang Campus,Army Engineering University of PLA,Shijiazhuang 050003,China)
出处
《稀有金属材料与工程》
SCIE
EI
CAS
CSCD
北大核心
2020年第12期4262-4270,共9页
Rare Metal Materials and Engineering
基金
河北省自然科学基金青年科学基金(E2015506011)
陆军工程大学石家庄校区科研创新发展基金(KYSZJQZL1910)。
