Deterioration of Polyethylene Films Induced by Partial Discharge and Variations Observed In Mechanical Properties

Deterioration induced by partial discharge was investigated for low-density polyethylene samples. Under an electrical field, a cold-drawn PE film was stretched perpendicularly to the direction of the original drawing. The starting voltage of the discharge shows a minimum at the draw ratio of 1.2 to...

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Veröffentlicht in:KOBUNSHI RONBUNSHU 1986/08/25, Vol.43(8), pp.521-528
Hauptverfasser: HWANG, Myung Whan, YAMAMOTO, Shigeru
Format: Artikel
Sprache:jpn
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Zusammenfassung:Deterioration induced by partial discharge was investigated for low-density polyethylene samples. Under an electrical field, a cold-drawn PE film was stretched perpendicularly to the direction of the original drawing. The starting voltage of the discharge shows a minimum at the draw ratio of 1.2 to 1.8. Around the same draw ratio, the elastic modulus and mechanical loss factor (tan δ) of the sample exhibit a minimum and a maximum, respectively. According to the X-ray analysis, the size of microcrystals decreases with increasing draw ratios. Reorientation of the molecular chains was observed above a draw ratio of 1.5 by the IR method.
ISSN:0386-2186
1881-5685
DOI:10.1295/koron.43.521