Increasing the Electrical Discharge Endurance of Acid Anhydride Cured DGEBA Epoxy Resin by Dispersion of Nanoparticle Silica

DOI Web Site 被引用文献2件
  • P O Henk
    Technical University of Denmark, Bldg. 325, Department of Electric Power Engineering, DK 2800 Lyngby, Denmark
  • T W Kortsen
    NCC Rasmusen and Schiøtz Byg A/S, Datavej 26, DK 3460 Birkerød, Denmark
  • T Kvarts
    NKT Cables A/S, Power Cable Division, Prior Parken 510, DK 2605 Brøndby, Denmark

書誌事項

公開日
1999-09
権利情報
  • https://journals.sagepub.com/page/policies/text-and-data-mining-license
DOI
  • 10.1088/0954-0083/11/3/304
公開者
SAGE Publications

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説明

<jats:p>A fluid DGEBA/methyl nadicanhydride epoxy system has been filled with inorganic particles, cast as bubble-free plates and cured. The ability of both the pure network polymer and the polymer/particle composites to withstand partial electrical discharges has been investigated. Three types of particle combinations were used: (a) fumed nanoparticle silicon dioxide referred to as Aerosil, (b) equal volumes of Aerosil and nanoparticle anatase, and (c) Aerosil plus anatase in combination with coarse-particle filler grade calcium–magnesium carbonate dolomite. A test for endurance using the CIGRE method II electrode arrangement was applied, the test comprising the establishment of partial discharges running perpendicularly onto one face of a plate specimen for a period measured until breakdown</jats:p> <jats:p>Our results show that the endurance of the pure polymer is low. Increased loading with Aerosil increases the endurance by a factor of up to 20 as the Aerosil content goes from zero to 5.4 vol.%. Aerosil mixed with anatase has a similar effect. The high level of endurance is maintained with an additional high-volume (35 vol.%) filling of coarse-particle dolomite to an epoxy system already containing Aerosil and anatase. The results are discussed in the light of estimated interparticle spacings and interface areas.</jats:p>

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