Article
  • Electrical Conduction of LDPE with Silicone-oil Contact
  • Suh KS, Lee CR, Han MK
  • 실리콘 접촉을 사용한 LDPE의 전기전도 현상
  • 서광석, 이창용, 한민구
Abstract
Electrical conduction characteristics of low density polyethylene with a silicone-oil layer at the surface have been investigated at medium fields ranging from about 75 to 650 kV/cm over the temperature range of 20 to 100℃. The conduction current of polyethylene increases exponentially with the electric Held and gets higher at higher temperatures. The observed conduction behavior was explained in terms of the SCLC and Fowler-Nordheim conduction by a tunneling effect. Activation energy ranges from 0.54 to 0.44 eV over the field range of 90-450 kV/cm and the charge mobility was estimated from a Child law to be in the ,order of 10-16-10-14m2/V·s. The silicone oil layer modifies the conduction behaviors in polyethylene. Major changes are (1) an increase in conduction currents, (2) a suppression in a rate of change of conduction currents, and (3) a decrease in activation energy.

20∼100℃까지의 온도범위 및 75∼650kV/cm의 전기장 범위에서 표면에 실리콘유를 바른 저밀도 폴리에틸렌의 전기전도특성을 조사하였다. 연구결과, 폴리에틸렌의 전도전류는 전기장에 따라 지수적으로 증가하며 온도가 높아질수륵 증가함을 알았으며, 폴리에틸렌의 전도특성을 공간 전하제한전도와 터널링 효과에 의한 파올러-노드하임전도로서 설명하였다. 전기전도에 대한 활성화에너지는 90-450kV/cm 범위에 걸쳐서 0.54∼0.44eV정도의 값을 가지며 전하이동도는 온도에 따라 10-16-10-14m2/V·s정도의 값을 가지는 것으로 추정된다. 본 실험결과, 폴리에틸렌의 표면에 있는 실리콘유로 인하여 플리에틸렌의 전기전도특성이 상당히 변하는 것으로 밝혀졌다. 주요한 변화로는 (1) 전도전류의 크기가 증가하며, (2) 180∼300kV/cm범위에서 전도전류의 증가폭이 크게 둔화되며, (3) 활성화에너지의 감소 등이다.

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  • Polymer(Korea) 폴리머
  • Frequency : Bimonthly(odd)
    ISSN 0379-153X(Print)
    ISSN 2234-8077(Online)
    Abbr. Polym. Korea
  • 2022 Impact Factor : 0.4
  • Indexed in SCIE

This Article

  • 1991; 15(4): 431-438

    Published online Aug 25, 1991