실리콘 접촉을 사용한 LDPE의 전기전도 현상

서광석; 이창용; 한민구

Polymer(Korea), Vol.15, No.4, 431-438, August, 1991

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실리콘 접촉을 사용한 LDPE의 전기전도 현상

Electrical Conduction of LDPE with Silicone-oil Contact

서광석, 이창용, 한민구

초록

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.

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.

[References]

O'Dwyer JJ, J. Appl. Phys., 37, 599 (1966)
Nath R, Kaura T, Perlman MM, IEEE Trans. Electr. Insul., EI25, 419 (1990)
Lawson WG, Br. J. Appl. Phys., 16, 1805 (1965)
Davis DK, J. Phys. D: Appl. Phys., 5, 162 (1972)
St-Onge H, IEEE Trans. Electr. Insul., EI11, 20 (1976)
Swan DW, J. Appl. Phys., 18, 5051 (1967)
Mizutani T, Tsukahara T, Ieda M, J. Phys. D: Appl. Phys., 13, 1673 (1980)
Mizutani T, Mitani K, Ieda M, J. Phys. D: Appl. Phys., 17, 1477 (1984)
Provided by Hanyang Petrochemical Co.
St-Onge H, IEEE Trans. Electr. Insul., EI15, 350 (1980)
Lampert MA, Mark P, "Current Injection in Solids," Academic Press, New York and London (1970)
Okamoto T, Tanaka T, IEEE Trans. Electr. Insul., EI20, 643 (1985)
Solymar L, Walsh D, "Lectures on the Electrical Properties of Materials," 3rd Ed., Oxford University Press, Oxford (1984)
Seo JW, Ryoo KS, Lee HS, Bull. Korean Chem. Soc., 6, 218 (1985)
vanRoggan A, Phys. Rev. Lett., 9, 368 (1962)
Toureille A, J. Appl. Phys., 47, 2961 (1976)
Kim GY, Yoon MS, Lee JW, Trans. KIEE, 39, 175 (1990)

[Referenced By]

[1] O'Dwyer JJ, J. Appl. Phys., 37, 599 (1966)

[2] Nath R, Kaura T, Perlman MM, IEEE Trans. Electr. Insul., EI25, 419 (1990)

[3] Lawson WG, Br. J. Appl. Phys., 16, 1805 (1965)

[4] Davis DK, J. Phys. D: Appl. Phys., 5, 162 (1972)

[5] St-Onge H, IEEE Trans. Electr. Insul., EI11, 20 (1976)

[6] Swan DW, J. Appl. Phys., 18, 5051 (1967)

[7] Mizutani T, Tsukahara T, Ieda M, J. Phys. D: Appl. Phys., 13, 1673 (1980)

[8] Mizutani T, Mitani K, Ieda M, J. Phys. D: Appl. Phys., 17, 1477 (1984)

[9] Provided by Hanyang Petrochemical Co.

[10] St-Onge H, IEEE Trans. Electr. Insul., EI15, 350 (1980)

[11] Lampert MA, Mark P, "Current Injection in Solids," Academic Press, New York and London (1970)

[12] Okamoto T, Tanaka T, IEEE Trans. Electr. Insul., EI20, 643 (1985)

[13] Solymar L, Walsh D, "Lectures on the Electrical Properties of Materials," 3rd Ed., Oxford University Press, Oxford (1984)

[14] Seo JW, Ryoo KS, Lee HS, Bull. Korean Chem. Soc., 6, 218 (1985)

[15] vanRoggan A, Phys. Rev. Lett., 9, 368 (1962)

[16] Toureille A, J. Appl. Phys., 47, 2961 (1976)

[17] Kim GY, Yoon MS, Lee JW, Trans. KIEE, 39, 175 (1990)