Electrical & Electronic Materials (E2M - 전기 전자와 첨단 소재)
- Volume 9 Issue 10
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- Pages.1033-1039
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- 1996
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- 2982-6268(pISSN)
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- 2982-6306(eISSN)
Mechanical and electrical properties of insulating materials at cryogenic temperature
극저온에서의 절연재료의 기계적.전기적 성질
Abstract
Electrical and mechanical properties of polymer sheet at cryogenic temperature have been investigated. Tensile stress(and strain at break) in liquid nitrogen(77K) of 79.7MPa(l.2%) and 117.4MPa(2.05%) are evaluated for films of Polypropylene (PP) and Kapton, respectively. Dielectric loss tangent(tan .delta.) of PP and Kapton films is almost independent of the frequency and tensile stress. Also, field strength of PP film at 77K decreases with increasing the tensile stress.