多孔软硬磁Ni0.5Zn0.5Fe2O4/SrFe12O19复合纤维制备及吸波性能
Preparation and Microwave Absorption Properties of Porous Structure Soft/Hard Magnetic Ni0.5Zn0.5Fe2O4/SrFe12O19 Composite Fibers
作者单位E-mail
周建伟 江苏大学材料科学与工程学院, 镇江 212013  
邢晓桐 江苏大学材料科学与工程学院, 镇江 212013  
韩秋霞 江苏大学材料科学与工程学院, 镇江 212013  
孟献丰 江苏大学材料科学与工程学院, 镇江 212013
江苏先进无机功能复合材料协同创新中心, 南京 210009 
mxf2029@ujs.edu.cn 
陆春华 江苏先进无机功能复合材料协同创新中心, 南京 210009  
摘要: 通过静电纺丝技术制备了多孔软硬磁Ni0.5Zn0.5Fe2O4/SrFe12O19复合纤维,利用综合热重分析仪(TG-DSC)、X射线衍射仪(XRD)、扫描电子显微镜(SEM)、透射电子显微镜(TEM)、X射线能谱仪(EDS)和矢量网络分析仪(VNA)等对复合纤维的晶体结构、微观形貌和电磁性能进行了表征,研究了不同软硬磁质量比对纤维结构和性能的影响。结果表明:900℃下制备的复合纤维具有立体多孔结构,软硬磁质量比为1∶3时,复合纤维的比表面积达到55 m2·g-1。吸波性能测试结果显示,当吸波剂涂层厚度为3.5 mm时,复合纤维在10.6 GHz处反射损失(RL)值达到-31.9 dB,在2~18 GHz频率范围内,RL值小于-10 dB的吸收带宽达到10.5 GHz,覆盖了整个X波段(8.2~12.4 GHz)和Ku波段(12.4~18 GHz),显示出优异的宽波段吸收性能。
关键词: Ni0.5Zn0.5Fe2O4/SrFe12O19  静电纺丝法  软硬磁复合  纤维  吸波性能
基金项目: 国家自然科学基金(No.50674048)、江苏省六大人才高峰(No.XCL-15)和江苏省自然科学基金(No.BK20141300)项目资助。
Abstract: Soft/hard magnetic Ni0.5Zn0.5Fe2O4/SrFe12O19 composite fibers with porous structure are prepared using a combination of sol-gel and electrospinning method. The crystal structure, micromorphology and electromagnetic properties of the as-prepared composite fibers are characterized by thermogravimetric analyzer (TG-DSC), X-ray diffraction (XRD), scanning electron microscopy (SEM), transmission electron microscopy (TEM), energy-dispersive X-ray spectrometry (EDS), N2 adsorpation-desorpation and vector network analyzer (VNA). The results indicate that after being heat treatment at 900℃, the obtained composite fibers are of three-dimensional porous structure. When the mass ratio of soft phase/hard phase is 1:3, the composite fiber has a large surface area value (55 m2·g-1). The microwave absorption properties results demonstrate that when the coating layer thickness is 3.5 mm, the composite fiber has a minimum reflection loss (RL) value (-31.9 dB). At the same time, the bandwidth of the RL values less than -10 dB in the frequency range of 2~18 GHz reaches 10.5 GHz, which covers all X-band (8.2~12.4 GHz) and Ku-band (12.4~18 GHz) and shows excellent wide band microwave absorption performance.
Keywords: Ni0.5Zn0.5Fe2O4/SrFe12O19  electrospinning method  soft/hard magnetic  fiber  microwave absorption properties
投稿时间:2017-12-11 修订日期:2018-01-29
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周建伟,邢晓桐,韩秋霞,孟献丰,陆春华.多孔软硬磁Ni0.5Zn0.5Fe2O4/SrFe12O19复合纤维制备及吸波性能[J].无机化学学报,2018,34(6):1043-1050.
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