Analysis of Insulating Reliability in Epoxy Composites Using Weibull Distribution Equation

와이블 분포식을 이용한 Epoxy 복합체의 절연 신뢰도 해석

  • 임중관 (동신대학교 전기전자공학부) ;
  • 박용필 (동신대학교 전기전자공학부) ;
  • 이준웅 (한국전기전자재료학회)
  • Published : 2001.08.01


The dielectric breakdown of epoxy composites used for transformers was experimented and then its data were applied to Weibull distribution probability. First of all, speaking of dielectric breakdown properties, the more hardener increased, the stronger breakdown strength became at low temperature because of cross-linked density by the virtue of ester radical. The breakdown strength of specimens with filler was lower than it of non-filler specimens because it is believed that the adding filler forms interface and charge is accumulated in it, therefore the molecular motility is raised and the electric filed is concentrated. In the case of filled specimens with treating silane, the breakdown strength become much higher. Finally, from the analysis of weibull distribution, it was confirmed that to low allowed breakdown probability under 0,.1%, the applied field value needed to be under 21.5MV/cm.



  1. Kinetics, Thermodynamics and Mechanism of Reactions of Epoxy Oligomers with Amine : Epoxy Resin and Composites Ⅱ B. A. Rozenberg;k. Dusek(Ed.)
  2. The Kinetics of Cure and Network Formation-Chemictry and Technology of Epoxy Resins B. Ellis;Bryan Ellis(ed.)
  3. Coatings and Other Applications of Epoxy Resina-Chemistry and Technology of Epoxy Resins X. M. Chen;B. Ellis(ed.)
  4. Electrical and Electronic Applications: Epoxy Resins, Chemistry and Technology S. M. Lee;Clayton A. May(ed.)
  5. 電氣學會 技術報告 v.342 固體絶緣材料の添加劑, 充てん劑の效果(第2阪) 電氣學會
  6. J. Appl. Poly. Sci. v.26 Electric Strength of Epoxide Resins and its Relation to Structure T. Takahama;O. Hayashi;F. Sato
  7. Colloid & polymer Sci. v.260 A General Approach to the Endurance of Electrical Insulation under Temperature and Voltages L. Simoni
  8. IEEE Tran. Elect. Insul. v.EI-18 Surface Discharge Effects on Dielectric Properties of Epoxy Resins R. Schifani
  9. 誘電體現象論 日本電氣學會
  10. J. Appl. Poly. Sci. v.33 Dielectric Properties of an Epoxy Resin and its Composite Ⅱ J. D. Reid
  11. 電氣設備の 診斷技術 日本電氣學會編
  12. J. Appl. Poly. Sci. v.26 Effects of Fillers on Electrical Properties of Epoxy Composites S. S. Sastry;G. Satyanandam