期刊
MATERIALS CHEMISTRY AND PHYSICS
卷 124, 期 1, 页码 434-438出版社
ELSEVIER SCIENCE SA
DOI: 10.1016/j.matchemphys.2010.06.062
关键词
Composite materials; Nanostructures; Electronic characterization; Inorganic compounds
资金
- Industry, Academy, and Research Institute funded Korea Small and Medium Business Administration [2009-1199]
- National Research Foundation of Korea [과C6B1913] Funding Source: Korea Institute of Science & Technology Information (KISTI), National Science & Technology Information Service (NTIS)
Carbon fibers were prepared as an electromagnetic interference shielding material by electrospinning and heat treatment methods. To increase the electromagnetic shielding effectiveness, additives (Fe2O3/BaTiO3/multi-walled carbon nanotubes) were included due to their excellent dielectric and coercive force properties. The additives were observed to cluster on the surface of fibers; additive metal oxides did not show any structural changes during the heat treatment, retaining their original magnetic properties. The permittivity of the materials improved significantly as a result of the added carbon nanotubes and their high electrical conductivity. Magnetic properties such as saturated magnetization and coercive force were also improved by the presence of Fe2O3/BaTiO3, which enhanced the permeability. The improved permittivity and permeability significantly contributed to effective shielding of electromagnetic interference measured at 37 dB. (C) 2010 Elsevier B.V. All rights reserved.
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