Correlation between mechanical and dielectric relaxation processes in epoxy resin composites with nano-and micro-fillers

Mayumi Hyuga, Toshikatsu Tanaka, Yoshimichi Ohki, Takahiro Imai, Miyuki Harada, Mitsukazu Ochi

    Research output: Contribution to journalArticle

    6 Citations (Scopus)

    Abstract

    Effects of addition of nano-sized and micro-sized fillers into epoxy resin on its mechanical and dielectric relaxation phenomena were examined. The glass transition temperature (T g) decreases when a small content of nanoclay modified by octadecylamine was added, while the decrease in T g is suppressed when the nanoclay was modified by dimethyldodecylamine. On the other hand, T g increases when microsilica was added abundantly. At temperatures above T g, both mechanical and dielectric relaxations are accelerated in samples with octadecylamine-modified nanoclay, while the acceleration does not occur in samples with nanoclay modified by dimethyldodecylamine. Both relaxations are restricted in composites with abundant microsilica. Therefore, co-addition of dimethyldodecylamine-modified nanoclay and abundant microsilica is adequate in order to make an epoxy resin composite with a high T g and low dielectric loss.

    Original languageEnglish
    Pages (from-to)1041-1047
    Number of pages7
    JournalIEEJ Transactions on Fundamentals and Materials
    Volume131
    Issue number12
    DOIs
    Publication statusPublished - 2011

    Fingerprint

    Anelastic relaxation
    Silica fume
    Dielectric relaxation
    Relaxation processes
    Epoxy resins
    Fillers
    Composite materials
    Dielectric losses
    Temperature

    Keywords

    • Dielectric properties
    • Epoxy resin
    • Filler modifier
    • Mechanical properties
    • Microcomposite
    • Polymer nanocomposite

    ASJC Scopus subject areas

    • Electrical and Electronic Engineering

    Cite this

    Correlation between mechanical and dielectric relaxation processes in epoxy resin composites with nano-and micro-fillers. / Hyuga, Mayumi; Tanaka, Toshikatsu; Ohki, Yoshimichi; Imai, Takahiro; Harada, Miyuki; Ochi, Mitsukazu.

    In: IEEJ Transactions on Fundamentals and Materials, Vol. 131, No. 12, 2011, p. 1041-1047.

    Research output: Contribution to journalArticle

    Hyuga, Mayumi ; Tanaka, Toshikatsu ; Ohki, Yoshimichi ; Imai, Takahiro ; Harada, Miyuki ; Ochi, Mitsukazu. / Correlation between mechanical and dielectric relaxation processes in epoxy resin composites with nano-and micro-fillers. In: IEEJ Transactions on Fundamentals and Materials. 2011 ; Vol. 131, No. 12. pp. 1041-1047.
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    AU - Imai, Takahiro

    AU - Harada, Miyuki

    AU - Ochi, Mitsukazu

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