Dielectric properties of three liquid crystal polymers

Peng Yang, Yoshimichi Ohki

    Research output: Contribution to journalArticle

    Abstract

    Dielectric properties of three kinds of liquid crystal polymers (LCPs) were investigated by measuring their thermal properties, thermally stimulated polarization and depolarization currents, and complex dielectric permittivity. To make clear the differences among the three LCP samples, complex electric modulus was introduced, which was found to be effective to suppress the effects of large conduction currents at high temperatures. Moreover, the slopes of the frequency dependence of e{open}[r' and e{open}]r'' are different below and above the phase transition temperature, indicating that the accumulation of charges occurs in front of the electrodes. The experimental results indicate that the phase transition has a significant influence on both the electrical conduction and dielectric relaxation for all LCPs.

    Original languageEnglish
    Pages (from-to)609-613
    Number of pages5
    JournalIEEJ Transactions on Electrical and Electronic Engineering
    Volume10
    Issue number6
    DOIs
    Publication statusPublished - 2015 Nov 1

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    Keywords

    • Complex permittivity
    • Dielectric properties
    • Electric modulus
    • Liquid crystal polymers

    ASJC Scopus subject areas

    • Electrical and Electronic Engineering

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