Journal of the Korean Institute of Illuminating and Electrical Installation Engineers (조명전기설비학회논문지)

The Korean Institute of IIIuminating and Electrical Installation Engineers (한국조명전기설비학회)
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Surface Discharge Characteristics of Phenolic Resin Treated by Heat and Its Structure Analysis

열처리된 페놀수지 표면에서의 방전 특성과 구조분석

  • 송길목 (전기안전연구원 재해예방연구그룹) ;
  • 노영수 (숭실대학교 전기제어시스템 제어과) ;
  • 곽희로 (숭실대학교 전기제어시스템 제어과)
  • Published : 2006.09.30
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Abstract

For clearing the cause of firing due to the tacking on the surface of phenolic resin, this paper describes the analysis through a couple of methods ; FT-IR; DTA; photograph analysis, etc. Phenolic resin has been widely employed as a case of low voltage appliances. In the experiment it was confirmed that its surface was carbonized and graphitized by the external fire. In the FT-IR test a graphite specimen thermally treated at $150[^{\circ}C]$ showed the 2 different IR absorption peaks at $1,730[cm^{-1}]\;and\;1,680[cm^{-1}]$. In normal phenolic resin, the exothermic peak appeared at $450[^{\circ}C]$, while in graphite specimen, it appeared at $610[^{\circ}C]$ in DTA test. From the results, the electrical fire causes could be cleared and it is expected to protect the human life and property from the electrical fire by using the important data.

페놀수지 표면에서의 트래킹 방전에 대한 화재원인을 규명하기 위하여 검증실험, FT-IR, DTA, 사진촬영 등의 다양한 방법으로 분석하였다. 페놀수지는 유기질 절연재료 중 저전압기기의 외함재료로 가장 많이 이용된다. 본 실험에서는 외부열에 의해 탄화질로 변화되는 것과 전기적 원인에 의해 흑연질이 되는 것에 대해 재료분석을 통한 방법으로 규명하였다. FT-IR을 이용하여 표면방전에 의해 탄화된 시료는 $150[^{\circ}C]$에서 열처리된 시료로부터 약 $1730[cm^{-1}]$ 부분과 $1680[cm^{-1}]$부근의 적외선흡광피크를 확인하였다. DTA를 이용하여 페놀수지는 약 $450[^{\circ}C]$ 부근에서 발열피크가 나타났으며, 방전에 의해 탄화된 재료는 약 $610[^{\circ}C]$ 부근에서 발열피크가 나타나는 것을 알 수 있었다. 이로써 전기화재원인을 규명하는 것이 가능하게 되었다. 이 결과들로부터, 전기화재의 예방과 국민의 생명과 재산을 지키는 중요한 자료가 될 것으로 기대된다.

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References

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