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FeCo/PPy纳米复合材料的合成及其电磁性能调控
闫智然1,2, 艾轶博1, 王祎旋1, 王煜3, 何峻3, 王海成1
1. 北京科技大学 国家材料服役安全科学中心, 北京 100083;
2. 北京科技大学 新金属材料国家重点实验室, 北京 100083;
3. 中国钢研科技集团有限公司 功能材料研究所, 北京 100081
Synthesis, modulation of electromagnetic properties of FeCo/PPy nanocomposites
YAN Zhi-ran1,2, AI Yi-bo1, WANG Yi-xuan1, WANG Yu3, HE Jun3, WANG Hai-cheng1
1. National Center for Materials Service Safety, University of Science and Technology Beijing, Beijing 100083, China;
2. State Key Laboratory for Advanced Metals and Materials, University of Science and Technology Beijing, Beijing 100083, China;
3. Institute of Function Materials, China Iron & Steel Research Institute Group, Beijing 100081, China
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摘要 为进一步改善电磁波吸收材料的阻抗匹配、提高吸收强度,本工作以液相还原法制备不同反应时间的FeCo磁性纳米颗粒,经表面修饰后通过原位氧化聚合,合成不同系列的FeCo/PPy纳米复合材料。结果表明,当FeCo反应时间为2h时,所合成的FeCo/PPy复合材料在14.45GHz、匹配厚度为2mm时最小反射损耗可达-38.19dB,有效带宽为5.45GHz(12.24~17.69GHz)。磁性纳米颗粒引入聚吡咯,有效降低了聚吡咯的复介电常数,优化了阻抗匹配,降低了对电磁波的反射;同时,在FeCo磁性纳米颗粒的磁损耗、PPy的介电损耗以及异质界面极化损耗等多重作用下,FeCo/PPy纳米复合材料对电磁波有着较好的吸收性能。
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闫智然
艾轶博
王祎旋
王煜
何峻
王海成
关键词 电磁波吸收磁性纳米颗粒导电聚合物纳米复合    
Abstract:In order to improve the impedance matching and wave absorption, FeCo magnetic nanoparticles with different reaction time were synthesized, and after being modified and in-situ oxidation polymerization, FeCo/PPy nanocomposites were prepared. Results show that the FeCo/PPy composites with FeCo nanoparticles which reaction time is 2h possess a maximum reflection loss (RL) value of -38.19dB at 14.45GHz and 2mm thickness with an effective absorption bandwidth (RL ≤ -10dB) of 5.45GHz (12.24-17.69GHz). The introduction of magnetic nanoparticles with polypyrrole can effectively decrease the complex permittivity and improve the impedance matching, which will reduce the reflection of electromagnetic wave. Meanwhile, the multimechanism of magnetic loss, dielectric loss and interface polarization loss, can prompt the absorption to the electromagnetic wave greatly.
Key wordselectromagnetic wave absorption    magnetic nanoparticle    conductive polymer    nanocomp-osites
收稿日期: 2018-03-20      出版日期: 2018-03-12
中图分类号:  TB34  
通讯作者: 王海成(1980-),男,副教授,博士,联系地址:北京市海淀区学院路30号北京科技大学国家材料服役安全科学中心(100083),E-mail:hcwang@mater.ustb.edu.cn     E-mail: hcwang@mater.ustb.edu.cn
引用本文:   
闫智然, 艾轶博, 王祎旋, 王煜, 何峻, 王海成. FeCo/PPy纳米复合材料的合成及其电磁性能调控[J]. 材料工程, 10.11868/j.issn.1001-4381.2018.000280.
YAN Zhi-ran, AI Yi-bo, WANG Yi-xuan, WANG Yu, HE Jun, WANG Hai-cheng. Synthesis, modulation of electromagnetic properties of FeCo/PPy nanocomposites. Journal of Materials Engineering, 2019, 47(3): 63-70.
链接本文:  
http://jme.biam.ac.cn/CN/10.11868/j.issn.1001-4381.2018.000280      或      http://jme.biam.ac.cn/CN/Y2019/V47/I3/63
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