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论文类型：期刊论文
发表时间：2017-11-01
发表刊物：POLYMER ENGINEERING AND SCIENCE
收录刊物：SCIE、EI、Scopus
卷号：57
期号：11
页面范围：1186-1192
ISSN号：0032-3888
摘要：The phenolphthalein polyetherketone (PEK-C) nanofibers loaded with Fe3O4/carbon nanotubes (CNTs) hybrid nanoparticles were synthesized by electrospinning technique. The morphology, composition, and thermal stability of composite nanofibers were characterized by scanning electron microscope, energy dispersive spectrometer, and thermogravimetric analysis, respectively. The complex permittivity and permeability of composite nanofibers in the microwave frequency range of X band (8.2-12.4 GHz) were measured by vector network analyzer using wave-guide method. The results show that the permittivity and dielectric loss were enhanced obviously by adding CNTs. With the WCNTs increasing to 5%, the minimum R-L value reaches -41.4 dB at 9.3 GHz with a matching thickness of 1.7 mm and exceeds 210 dB with thickness of 1.4-1.8 mm in the whole X band. The enhanced microwave absorption properties are mainly attributed to tunable electromagnetic parameters and thus a better impedance matching characteristic by mixing CNTs with Fe3O4 nanoparticles within proper ranges loaded in PEK-C nanofibers. (C) 2017 Society of Plastics Engineers