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Enhanced microwave absorption properties of electrospun PEK‐C nanofibers loaded with Fe 3 O 4 /CNTs hybrid nanoparticles
Author(s) -
Yu Qi,
Ma Mingbo,
Chen Ping,
Wang Qi,
Lu Chun,
Gao Yu,
Wang Rongchao,
Chen Hanlin
Publication year - 2017
Publication title -
polymer engineering and science
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.503
H-Index - 111
eISSN - 1548-2634
pISSN - 0032-3888
DOI - 10.1002/pen.24496
Subject(s) - materials science , nanofiber , thermogravimetric analysis , nanoparticle , scanning electron microscope , microwave , electrospinning , carbon nanotube , permittivity , reflection loss , composite material , composite number , absorption (acoustics) , dielectric loss , thermal stability , nanocomposite , dielectric , chemical engineering , nanotechnology , polymer , optoelectronics , physics , quantum mechanics , engineering
The phenolphthalein polyetherketone (PEK‐C) nanofibers loaded with Fe 3 O 4 /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 Fe 3 O 4 nanoparticles within proper ranges loaded in PEK‐C nanofibers. POLYM. ENG. SCI., 57:1186–1192, 2017. © 2017 Society of Plastics Engineers