Polyetherimide의 전기전도 특성

서광석; 남진호; 이미경

Polymer(Korea), Vol.20, No.1, 143-147, January, 1996

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Polyetherimide의 전기전도 특성

Electrical Conduction Characteristics of Polyetherimide

서광석, 남진호, 이미경

초록

0-100℃의 온도와 0.9-27MV/m의 전기장에서 polyetherimide (PEI)의 전기전도 특성을 알아보았다. 전기장과 온도가 증가함에 따라 PEI의 전류밀도가 증가하며 열적으로 활성화된 이온호핑기구에 의하여 전기전도가 일어남을 알았다. 또한 온도가 50℃에서 100℃로 증가함에 따라 이온의 호핑거리는 5.69nm에서 3.34nm로 감소하는데, 이는 온도가 증가함에 따라 분자운동이 활발해지기 때문인 것으로 추정된다. 측정온도 범위에서의 전기전도에 대한 활성화에너지는 0.74eV이었다.

Conduction characteristics of polyetherimide (PEI) were investigated at the electric fields of 0.9-27 MV/m and the temperatures of 50-100℃. It was found that the current densities of PEI increased with the increase of the electric field and the temperature and that the conduction of PEI was governed by the thermally activated ionic hopping process. The hopping distance of ions in the PEI decreased from 5.69 nm at 50℃ to 3.34 nm at 100℃, which was attributed to the increase of molecular motions with the increase of temperature. The activation energy for the conduction was calculated to be 0.74 eV.

Keywords:electrical conduction;PEI;ionic hopping process;activation energy

[References]

DasGupta DK, Daughty K, IEEE Trans. Electr. Insul., EI22, 1 (1987)
Kim EJ, Ohki Y, IEEE Trans. Dielectr. Electr. Insul., DEI2, 74 (1995)
Takeda T, Kim EJ, Ohki Y, Proc. 8th International Symposium on High Voltage Engineering, Yokohama, Japan, 143 (1993)
Nakamura S, Sawa G, Ieda M, IEEE Trans. Electr. Insul., EI17, 194 (1982)
Higashibata K, Miyamoto T, Trans. Inst. Electr. Eng. Jpn. A, 112A, 805 (1992)
Suh KS, Lee CR, Noh JS, Tanaka J, Damon DH, IEEE Trans. Dielectr. Electr. Insul., DEI1, 224 (1994)
O'Dwyer JJ, "The Theory of Electrical Conduction and Breakdown in Solid Dielectrics," Clarendon Press, London (1973)
Rubin II, "Handbook of Plastic Materials and Technology," Robinson Plastics Coporation, New York (1990)
Bartnikas R, Eichhorn RM, "Engineering Dielectrics," vol. IIA, p. 286-288, ASTM STP 783, Philadelphia (1983)
Mott NF, Gurney RW, "Electronic Process in Ionic Crystals," Oxford Univ., Press, London (1940)
Lawson WG, Br. J. Appl. Phys., 16, 1805 (1965)

[1] DasGupta DK, Daughty K, IEEE Trans. Electr. Insul., EI22, 1 (1987)

[2] Kim EJ, Ohki Y, IEEE Trans. Dielectr. Electr. Insul., DEI2, 74 (1995)

[3] Takeda T, Kim EJ, Ohki Y, Proc. 8th International Symposium on High Voltage Engineering, Yokohama, Japan, 143 (1993)

[4] Nakamura S, Sawa G, Ieda M, IEEE Trans. Electr. Insul., EI17, 194 (1982)

[5] Higashibata K, Miyamoto T, Trans. Inst. Electr. Eng. Jpn. A, 112A, 805 (1992)

[6] Suh KS, Lee CR, Noh JS, Tanaka J, Damon DH, IEEE Trans. Dielectr. Electr. Insul., DEI1, 224 (1994)

[7] O'Dwyer JJ, "The Theory of Electrical Conduction and Breakdown in Solid Dielectrics," Clarendon Press, London (1973)

[8] Rubin II, "Handbook of Plastic Materials and Technology," Robinson Plastics Coporation, New York (1990)

[9] Bartnikas R, Eichhorn RM, "Engineering Dielectrics," vol. IIA, p. 286-288, ASTM STP 783, Philadelphia (1983)

[10] Mott NF, Gurney RW, "Electronic Process in Ionic Crystals," Oxford Univ., Press, London (1940)

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