Experimental study on the dielectric properties of a liquid crystal polymer

Peng Yang, Yoshimichi Ohki

    Research output: Chapter in Book/Report/Conference proceedingConference contribution

    Abstract

    Dielectric behavior of a typical liquid crystal polymer Vecstar was studied by measuring its dielectric permittivity, conductivity and other electrical properties. Dielectric spectra are analyzed combined with the thermal properties and thermally stimulated current spectra, and space charge distributions. Complex electrical modulus is introduced in the analysis of the permittivity spectra, which proves to be effective to suppress the effects of large conduction currents at high temperatures. Moreover, the slope of the frequency dependence of εr' is different below and above 160 oC, which indicates that the Maxwell/Wagner polarization occurs inside the sample. The experimental results indicate that both the dielectric relaxation and electrical conduction are closely related with molecular motion and phase transition of the polymer. It is also shown that the polymer is an excellent insulating material in a wide temperature and frequency range.

    Original languageEnglish
    Title of host publicationAnnual Report - Conference on Electrical Insulation and Dielectric Phenomena, CEIDP
    Pages575-578
    Number of pages4
    DOIs
    Publication statusPublished - 2013
    Event2013 IEEE Conference on Electrical Insulation and Dielectric Phenomena, CEIDP 2013 - Shenzhen
    Duration: 2013 Oct 202013 Oct 23

    Other

    Other2013 IEEE Conference on Electrical Insulation and Dielectric Phenomena, CEIDP 2013
    CityShenzhen
    Period13/10/2013/10/23

    Fingerprint

    Liquid crystal polymers
    Dielectric properties
    Polymers
    Permittivity
    Insulating materials
    Dielectric relaxation
    Charge distribution
    Electric space charge
    Electric properties
    Thermodynamic properties
    Phase transitions
    Polarization
    Temperature
    liquid crystal polymer

    ASJC Scopus subject areas

    • Electronic, Optical and Magnetic Materials
    • Electrical and Electronic Engineering

    Cite this

    Yang, P., & Ohki, Y. (2013). Experimental study on the dielectric properties of a liquid crystal polymer. In Annual Report - Conference on Electrical Insulation and Dielectric Phenomena, CEIDP (pp. 575-578). [6748209] https://doi.org/10.1109/CEIDP.2013.6748209

    Experimental study on the dielectric properties of a liquid crystal polymer. / Yang, Peng; Ohki, Yoshimichi.

    Annual Report - Conference on Electrical Insulation and Dielectric Phenomena, CEIDP. 2013. p. 575-578 6748209.

    Research output: Chapter in Book/Report/Conference proceedingConference contribution

    Yang, P & Ohki, Y 2013, Experimental study on the dielectric properties of a liquid crystal polymer. in Annual Report - Conference on Electrical Insulation and Dielectric Phenomena, CEIDP., 6748209, pp. 575-578, 2013 IEEE Conference on Electrical Insulation and Dielectric Phenomena, CEIDP 2013, Shenzhen, 13/10/20. https://doi.org/10.1109/CEIDP.2013.6748209
    Yang P, Ohki Y. Experimental study on the dielectric properties of a liquid crystal polymer. In Annual Report - Conference on Electrical Insulation and Dielectric Phenomena, CEIDP. 2013. p. 575-578. 6748209 https://doi.org/10.1109/CEIDP.2013.6748209
    Yang, Peng ; Ohki, Yoshimichi. / Experimental study on the dielectric properties of a liquid crystal polymer. Annual Report - Conference on Electrical Insulation and Dielectric Phenomena, CEIDP. 2013. pp. 575-578
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