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Enhancing electromagnetic wave absorption in carbon fiber using FeS_(2)nanoparticles

Nano Research 2023年第7期16卷 9591-9601页

作者： Yuying Guo Meng Zhang Tingting Cheng Yuxin Xie Laibin Zhao Liang Jiang Wenxin Zhao Liying Yuan Alan Meng Jian Zhang Ting Wang Zhenjiang Li College of Electromechanical Engineering Key Laboratory of Polymer Material Advanced Manufacturing’s Technology of Shandong provinceCollege of Materials Science and EngineeringQingdao University of Science and TechnologyQingdao 266061China College of Chemical Engineering Key Laboratory of Optic-electric Sensing and Analytical Chemistry for Life ScienceMOEShandong Key Laboratory of Biochemical AnalysisCollege of Chemistry and Molecular EngineeringQingdao University of Science and TechnologyQingdao 266042China College of Textiles and Clothing Qingdao UniversityQingdao 266071China

Carbon-based electromagnetic wave absorbing materials(absorbers)adhered with metallic sulfide nanoparticles of good electrical conductivity attract increasing researchers’attention.In this study,on the basis of carbon fiber(C_(f))@Fe_(3)O_(4) nanocomposites obtained by the electrostatic spinning and reflow method,C_(f)@FeS_(2)nanocomposite was successfully prepared during a further hydrothermal process.The products exhibit excellent electromagnetic wave absorption performances with a minimum reflection loss(RLmin)of-54.11 dB at 2.13 mm matching thickness.At the same time,the optimal effective absorption bandwidth(EAB)value of 6.04 GHz at a thickness of 1.98 mm covers the whole Ku band,suggesting its excellent electromagnetic wave absorption performances.In addition,the interlaced network structure constructed by carbon fiber,outstanding conductivity of FeS_(2)nanoparticles,and interfacial polarization from hetero-structure play significant parts in enhancing the electromagnetic parameters and absorption performances.All these results suggest that the C_(f)@FeS_(2)nanocomposites can be taken as a new electromagnetic wave-absorbing material under their low density,simple craft,and strong absorption characteristics.

关键词： constructed network structure carbon fiber(C_(f))@FeS_(2)nanocomposite enhanced dielectric loss microwave attenuation mechanism

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