镧掺杂锶铁氧体/聚苯胺纳米复合材料的制备及电磁性能

翟青霞; 黄英

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航空材料学报 ›› 2011, Vol. 31 ›› Issue (6) : 55.

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论文

镧掺杂锶铁氧体/聚苯胺纳米复合材料的制备及电磁性能

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Prepared and Electromagnetic Properties of La Doped Strontium Ferrite/Polymer Composite

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摘要

为了比较不同形态的镧掺杂纳米锶铁氧体复合材料电磁性能的优劣，分别以溶胶凝胶法制备了稀土镧掺杂纳米锶铁氧体（SrLa0.4Fe11.6O19）颗粒、原位复合技术制备了镧掺杂锶铁氧体/聚苯胺（SrLa0.4Fe11.6O19/PANI）纳米复合颗粒，静电自组装法制备了镧掺杂锶铁氧体/聚苯乙烯磺酸钠(SrLa0.4Fe11.6O19/PSS)20、镧掺杂锶铁氧体/聚苯乙烯磺酸钠/聚苯胺(SrLa0.4Fe11.6O19/PSS/PANI)8纳米复合多层膜。用XRD，FTIR，FETEM，XPS，矢量网络分析，VSM研究了镧掺杂锶铁氧体/聚苯胺纳米复合材料结构和性能。结果表明：在9.21GHz附近，材料的损耗角正切大小排序为：(SrLa0.4Fe11.6O19/PSS/PANI)8复合多层膜 SrLa0.4Fe11.6O19/PANI复合颗粒 SrLa0.4Fe11.6O19颗粒；(SrLa0.4Fe11.6O19/PSS/PANI)8复合多层薄膜比颗粒材料具有更高的饱和磁化强度Ms和矫顽力Hc。(SrLa0.4Fe11.6O19/PSS/PANI)8纳米复合多层膜具有优良的电磁性能。

Abstract

To compare the electromagnetic properties of Ladoped strontium ferrites nanocomposite in different form, strontium ferrites particle doped with La were synthesized by solgel, strontium ferrite/PANI nanocomposites were prepared by in situ polymerization method, La doped nanostrontium ferrite/PSS film and SrLa0.4Fe11.6O19/PSS/PANI multlayers film were prepared by electrostatic selfassembly technique. The structure, morphology and ferromagnetic property of ferrite particle and nanocomposites were characterized by Xray powder diffractometer (XRD), Fourier transform infrared spectra (FTIR), Transmission electron microscope (TEM), Xray photoelectron spectrum（XPS）, Magnetic vector network analyzer and vibrating sample magnetometer (VSM) . The results indicate that at 9.21GHz，the strength of microwave absorption properties of all is: (SrLa0.4Fe11.6O19/PSS/PANI)8 multilayer film SrLa0.4Fe11.6O19/PANI particle SrLa0.4Fe11.6O19 particle, (SrLa0.4Fe11.6O19/PSS/PANI)8 multilayer film has higher saturation magnetization Ms and coercivity Hc as compared with the particle SrFe12O19 and SrFe12O19/ PANI composite materials. (SrLa0.4Fe11.6O19/PSS/PANI)8 multilayer film has fine electromagnetic performance.

导出引用

翟青霞, 黄英. 镧掺杂锶铁氧体/聚苯胺纳米复合材料的制备及电磁性能[J]. 航空材料学报, 2011, 31(6): 55

ZHAI Qing-xia, HUANG Ying. Prepared and Electromagnetic Properties of La Doped Strontium Ferrite/Polymer Composite[J]. Journal of Aeronautical Materials, 2011, 31(6): 55

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