한국안전학회지 (Journal of the Korean Society of Safety)

  • 제17권4호
  • /
  • Pages.101-109
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  • 2002
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  • 1738-3803(pISSN)
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  • 2383-9953(eISSN)
한국안전학회 (The Korean Society of Safety)
권호 표지

고차구조 변화에 따른 저밀도폴리에틸렌 박막의 전기적 특성

Electrical Properties of Low Density Polyethylene Film by Superstructure Change

  • 신종열 (광운대학교 전기공학과) ;
  • 신현택 (광운대학교 전기공학과) ;
  • 이수원 (한국철도대학 철도전기제어과) ;
  • 홍진웅 (광운대학교 전기공학과)
  • Shin, Jong-Yeol (Department of Electrical Engineering, Kwangwoon University) ;
  • Shin, Hyun-Taek (Department of Electrical Engineering, Kwangwoon University) ;
  • Lee, Soo-Won (Department of Reailroad Electric Control Korea National Railroad College) ;
  • Hong, Jin-Woong (Department of Electrical Engineering, Kwangwoon University)
  • 발행 : 2002.12.01
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초록

The electrical properties of polyethylene are changed by the superstructure. Such crystalline polymer as polyethylene or polypropylene changes crystallinity and products spherulite or trans-crystal when it is cooled slowly. In this study, after thermal treatment of LDPE at 100[${circ}C$], in silicone oil for an hour, we made specimens in order of slow cooling, water cooling, quenching according to cooling speed. Also, to study the influence of electrical properties due to the superstructure change, we analyzed physical properties and performed dielectric breakdown experiments using DC and impulse voltage Moreover we measured space charges in bulk using Laser Induced Pressure Pulse(LIPP) method. Trap level of specimen is 0.064[eV] at the low temperature region 0.31[eV] at the high temperature region in DC dielectric strength, 0.03[eV] at the low temperature region 0.0925[eV] at the high temperature region in impulse dielectric strength. As its result shows that the quantity of charges induced from the electrode surface increases with applied voltage time, and the distribution of space charges in samples increases the quantity of charges in proportion to applied voltage.

키워드

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