Dielectric properties of epoxy/clay nanocomposites -effects of curing agent and clay dispersion method

N. Tagami*, M. Okada, N. Hirai, Y. Ohki, T. Tanaka, T. Imai, M. Harada, M. Ochi

*この研究の対応する著者

研究成果: Article査読

66 被引用数 (Scopus)

抄録

Effects of the differences in the curing agent and filler dispersion method on the dielectric properties were examined for epoxy/clay nanocomposites. Irrespective of the clay dispersion method, relative permittivity and electrical conductivity are higher in the samples cured with the amine. Moreover, negative heterocharge accumulates in the vicinity of the anode in the amine-cured samples, whereas positive homocharge accumulates in the acid anhydride-cured samples. From the results of UV photon absorption and PL measurement, the bandgap or the energy at which the photon absorption increases drastically is smaller in the amine-cured samples than in the acid anhydride-cured samples. Ion migration can occur easily in the amine-cured samples whose electrical conductivity and relative permittivity are higher than the acid anhydride-cured samples. The curing agent gives the strongest effect, while the existence of clay affects secondly and the filler dispersion method has the weakest effect.

本文言語English
ページ(範囲)24-32
ページ数9
ジャーナルIEEE Transactions on Dielectrics and Electrical Insulation
15
1
DOI
出版ステータスPublished - 2008 2月

ASJC Scopus subject areas

  • 電子工学および電気工学

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