Synergy effects in the electrical conductivity behavior of onion‐like carbon and multiwalled carbon nanotubes composites I. Kranauskaite, J. Macutkevic, J. Banys [et al.]
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ArticleSubject(s): углеродные нанотрубки | электропроводность | композиционные материалы | диэлектрические свойстваGenre/Form: статьи в журналах Online resources: Click here to access online
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Physica status solidi B Vol. 252, № 8. P. 1799-1803Abstract: The dielectric/electric properties of polyurethane composites filled with carbon nanotubes (CNT), onion‐like carbon (OLC), and mixed OLC/CNT are compared across a wide frequency range from hertz to terahertz. The dielectric/electric properties of composites filled with OLC are very attractive and can be improved by addition of small amounts of CNTs due to a strong synergism between the two carbon allotropes. Moreover, in composites with mixed OLC/CNT inclusions, the value of the percolation threshold is lower than the value predicted by the excluded‐volume theory. In composites with mixed OLC/CNT inclusions, the dielectric permittivity and electrical conductivity increase due to a decrease in the average distance between nanocarbon clusters.
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The dielectric/electric properties of polyurethane composites filled with carbon nanotubes (CNT), onion‐like carbon (OLC), and mixed OLC/CNT are compared across a wide frequency range from hertz to terahertz. The dielectric/electric properties of composites filled with OLC are very attractive and can be improved by addition of small amounts of CNTs due to a strong synergism between the two carbon allotropes. Moreover, in composites with mixed OLC/CNT inclusions, the value of the percolation threshold is lower than the value predicted by the excluded‐volume theory. In composites with mixed OLC/CNT inclusions, the dielectric permittivity and electrical conductivity increase due to a decrease in the average distance between nanocarbon clusters.
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