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

    Fingerprint

    Liquid crystal polymers
    Dielectric properties
    Phase transitions
    Dielectric relaxation
    Depolarization
    Superconducting transition temperature
    Permittivity
    Thermodynamic properties
    Polarization
    Electrodes
    Temperature

    Keywords

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

    ASJC Scopus subject areas

    • Electrical and Electronic Engineering

    Cite this

    Dielectric properties of three liquid crystal polymers. / Yang, Peng; Ohki, Yoshimichi.

    In: IEEJ Transactions on Electrical and Electronic Engineering, Vol. 10, No. 6, 01.11.2015, p. 609-613.

    Research output: Contribution to journalArticle

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