| 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 | |
| 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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