Enhanced microwave absorption properties of electrospun PEK‐C nanofibers loaded with Fe3O4/CNTs hybrid nanoparticles |
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| Authors: | Qi Yu Mingbo Ma Ping Chen Qi Wang Chun Lu Yu Gao Rongchao Wang Hanlin Chen |
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| Affiliation: | 1. School of Aerospace Engineering & Liaoning Key Laboratory of Advanced Polymer Matrix Composites, Shenyang Aerospace University, Shenyang, China;2. School of Chemical Engineering & State Key Laboratory of Fine Chemicals, Dalian University of Technology, Dalian, China |
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| Abstract: | 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 W CNTs 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 ?10 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. POLYM. ENG. SCI., 57:1186–1192, 2017. © 2017 Society of Plastics Engineers |
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