Superiority in partial discharge resistance of several polymer nanocomposites

T. Tanaka, Yoshimichi Ohki, T. Shimizu, S. Okabe

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

    5 Citations (Scopus)

    Abstract

    Polymer nanocomposite is defined as a polymer with small amounts of nanometer size inorganic fillers homogeneously dispersed. This nano material is potentially applied to electrical insulation to power apparatus and cables. It was found among them that partial discharge resistance exhibits supermarked improvement by nanostructuration. The paper demonstrates the superiority of the following nanocomposites in partial discharge (PD) resistance over neat and micro-filled polymers, and comparative evaluation of thier PD resistance. Futhermore, it describes how it takes place as its mechanisms. (1) polyamide/layered silicate nanocomposites (2) epoxy/layered silicate nanocomposites (3) epoxy/silica nanocomposites (4) epoxy/titania nanocomposites (5) epoxy/alumina nanocomposites Both base polymers and polymer nanocomposites were subjected to ac voltage (60Hz and 720 Hz) using the IEC (b) electrode system and the rod-gap-plane electrode, and evaluated by scanning electron microscopy, atomic force microscopy, mechanical profilometry, laser microscope, X-ray diffraction spectroscopy and energy-dispersive X-ray spectroscopy. From erosion depth study and associated physical investigation, it is concluded that the addition of several wt% nano-fillers is very effective to increase PD resistance of polymers such as polyamide and epoxy. Epoxy/silica (12nm) nanocomposite with silane coupling treatment is the best of all the tested nanocomposites, partly because thier interface is considered to be solid. There is a filler size effect from μm down to nm on PD resistance. Coupling agents would help improve the degree of PD resistance to a certain degree. Morphological change taking place in a nanostructuration process is effective in some cases. The first principle for the superiority of nanocomposites in PD resistance is definitely the effect of three dimensional fine partition of polymer matrix that could be made by nano fillers. There are some other important effects possibly arising from filler-matrix interfaces, polymer morphology around the interfaces, and/or PD self-produced substances.They are also interpreted using a newly proposed multi-core model that is considered to be rather universal to all dielectric properties and related phenomena.

    Original languageEnglish
    Title of host publication41st International Conference on Large High Voltage Electric Systems 2006, CIGRE 2006
    Publication statusPublished - 2006
    Event41st International Conference on Large High Voltage Electric Systems 2006, CIGRE 2006 - Paris
    Duration: 2006 Aug 272006 Sep 1

    Other

    Other41st International Conference on Large High Voltage Electric Systems 2006, CIGRE 2006
    CityParis
    Period06/8/2706/9/1

    Fingerprint

    Partial discharges
    Nanocomposites
    Polymers
    Fillers
    Polyamides
    Silicates
    Silica
    Filled polymers
    Electrodes
    Profilometry
    Coupling agents
    Polymer matrix
    Silanes
    Dielectric properties
    Insulation
    Erosion
    Atomic force microscopy
    Cables
    Microscopes
    Alumina

    Keywords

    • Dielectric
    • Erosion
    • Insulating material
    • Multi core model
    • Nanodielectric
    • Nanofiller
    • Nanomaterial
    • Partial discharge
    • Partial discharge resistance
    • Polymer nanocomposite

    ASJC Scopus subject areas

    • Electrical and Electronic Engineering

    Cite this

    Tanaka, T., Ohki, Y., Shimizu, T., & Okabe, S. (2006). Superiority in partial discharge resistance of several polymer nanocomposites. In 41st International Conference on Large High Voltage Electric Systems 2006, CIGRE 2006

    Superiority in partial discharge resistance of several polymer nanocomposites. / Tanaka, T.; Ohki, Yoshimichi; Shimizu, T.; Okabe, S.

    41st International Conference on Large High Voltage Electric Systems 2006, CIGRE 2006. 2006.

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

    Tanaka, T, Ohki, Y, Shimizu, T & Okabe, S 2006, Superiority in partial discharge resistance of several polymer nanocomposites. in 41st International Conference on Large High Voltage Electric Systems 2006, CIGRE 2006. 41st International Conference on Large High Voltage Electric Systems 2006, CIGRE 2006, Paris, 06/8/27.
    Tanaka T, Ohki Y, Shimizu T, Okabe S. Superiority in partial discharge resistance of several polymer nanocomposites. In 41st International Conference on Large High Voltage Electric Systems 2006, CIGRE 2006. 2006
    Tanaka, T. ; Ohki, Yoshimichi ; Shimizu, T. ; Okabe, S. / Superiority in partial discharge resistance of several polymer nanocomposites. 41st International Conference on Large High Voltage Electric Systems 2006, CIGRE 2006. 2006.
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    abstract = "Polymer nanocomposite is defined as a polymer with small amounts of nanometer size inorganic fillers homogeneously dispersed. This nano material is potentially applied to electrical insulation to power apparatus and cables. It was found among them that partial discharge resistance exhibits supermarked improvement by nanostructuration. The paper demonstrates the superiority of the following nanocomposites in partial discharge (PD) resistance over neat and micro-filled polymers, and comparative evaluation of thier PD resistance. Futhermore, it describes how it takes place as its mechanisms. (1) polyamide/layered silicate nanocomposites (2) epoxy/layered silicate nanocomposites (3) epoxy/silica nanocomposites (4) epoxy/titania nanocomposites (5) epoxy/alumina nanocomposites Both base polymers and polymer nanocomposites were subjected to ac voltage (60Hz and 720 Hz) using the IEC (b) electrode system and the rod-gap-plane electrode, and evaluated by scanning electron microscopy, atomic force microscopy, mechanical profilometry, laser microscope, X-ray diffraction spectroscopy and energy-dispersive X-ray spectroscopy. From erosion depth study and associated physical investigation, it is concluded that the addition of several wt{\%} nano-fillers is very effective to increase PD resistance of polymers such as polyamide and epoxy. Epoxy/silica (12nm) nanocomposite with silane coupling treatment is the best of all the tested nanocomposites, partly because thier interface is considered to be solid. There is a filler size effect from μm down to nm on PD resistance. Coupling agents would help improve the degree of PD resistance to a certain degree. Morphological change taking place in a nanostructuration process is effective in some cases. The first principle for the superiority of nanocomposites in PD resistance is definitely the effect of three dimensional fine partition of polymer matrix that could be made by nano fillers. There are some other important effects possibly arising from filler-matrix interfaces, polymer morphology around the interfaces, and/or PD self-produced substances.They are also interpreted using a newly proposed multi-core model that is considered to be rather universal to all dielectric properties and related phenomena.",
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    AU - Ohki, Yoshimichi

    AU - Shimizu, T.

    AU - Okabe, S.

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    N2 - Polymer nanocomposite is defined as a polymer with small amounts of nanometer size inorganic fillers homogeneously dispersed. This nano material is potentially applied to electrical insulation to power apparatus and cables. It was found among them that partial discharge resistance exhibits supermarked improvement by nanostructuration. The paper demonstrates the superiority of the following nanocomposites in partial discharge (PD) resistance over neat and micro-filled polymers, and comparative evaluation of thier PD resistance. Futhermore, it describes how it takes place as its mechanisms. (1) polyamide/layered silicate nanocomposites (2) epoxy/layered silicate nanocomposites (3) epoxy/silica nanocomposites (4) epoxy/titania nanocomposites (5) epoxy/alumina nanocomposites Both base polymers and polymer nanocomposites were subjected to ac voltage (60Hz and 720 Hz) using the IEC (b) electrode system and the rod-gap-plane electrode, and evaluated by scanning electron microscopy, atomic force microscopy, mechanical profilometry, laser microscope, X-ray diffraction spectroscopy and energy-dispersive X-ray spectroscopy. From erosion depth study and associated physical investigation, it is concluded that the addition of several wt% nano-fillers is very effective to increase PD resistance of polymers such as polyamide and epoxy. Epoxy/silica (12nm) nanocomposite with silane coupling treatment is the best of all the tested nanocomposites, partly because thier interface is considered to be solid. There is a filler size effect from μm down to nm on PD resistance. Coupling agents would help improve the degree of PD resistance to a certain degree. Morphological change taking place in a nanostructuration process is effective in some cases. The first principle for the superiority of nanocomposites in PD resistance is definitely the effect of three dimensional fine partition of polymer matrix that could be made by nano fillers. There are some other important effects possibly arising from filler-matrix interfaces, polymer morphology around the interfaces, and/or PD self-produced substances.They are also interpreted using a newly proposed multi-core model that is considered to be rather universal to all dielectric properties and related phenomena.

    AB - Polymer nanocomposite is defined as a polymer with small amounts of nanometer size inorganic fillers homogeneously dispersed. This nano material is potentially applied to electrical insulation to power apparatus and cables. It was found among them that partial discharge resistance exhibits supermarked improvement by nanostructuration. The paper demonstrates the superiority of the following nanocomposites in partial discharge (PD) resistance over neat and micro-filled polymers, and comparative evaluation of thier PD resistance. Futhermore, it describes how it takes place as its mechanisms. (1) polyamide/layered silicate nanocomposites (2) epoxy/layered silicate nanocomposites (3) epoxy/silica nanocomposites (4) epoxy/titania nanocomposites (5) epoxy/alumina nanocomposites Both base polymers and polymer nanocomposites were subjected to ac voltage (60Hz and 720 Hz) using the IEC (b) electrode system and the rod-gap-plane electrode, and evaluated by scanning electron microscopy, atomic force microscopy, mechanical profilometry, laser microscope, X-ray diffraction spectroscopy and energy-dispersive X-ray spectroscopy. From erosion depth study and associated physical investigation, it is concluded that the addition of several wt% nano-fillers is very effective to increase PD resistance of polymers such as polyamide and epoxy. Epoxy/silica (12nm) nanocomposite with silane coupling treatment is the best of all the tested nanocomposites, partly because thier interface is considered to be solid. There is a filler size effect from μm down to nm on PD resistance. Coupling agents would help improve the degree of PD resistance to a certain degree. Morphological change taking place in a nanostructuration process is effective in some cases. The first principle for the superiority of nanocomposites in PD resistance is definitely the effect of three dimensional fine partition of polymer matrix that could be made by nano fillers. There are some other important effects possibly arising from filler-matrix interfaces, polymer morphology around the interfaces, and/or PD self-produced substances.They are also interpreted using a newly proposed multi-core model that is considered to be rather universal to all dielectric properties and related phenomena.

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    KW - Insulating material

    KW - Multi core model

    KW - Nanodielectric

    KW - Nanofiller

    KW - Nanomaterial

    KW - Partial discharge

    KW - Partial discharge resistance

    KW - Polymer nanocomposite

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