Relation between the Superstructure and the Dielectric Breakdown in Semicrystalline Polymers

• Yamakita Takayuki

  Kansai University

Bibliographic Information

Other Title

• 結晶性高分子の高次構造と絶縁破壊
• ケッショウセイ コウブンシ ノ コウジ コウゾウ ト ゼツエン ハカイ

Abstract

When semicrystalline polymers such as polyethylene and polypropylene crystallize, they form spherulites and transcrystals. The spherulites grow from nuclei in the bulk and the transcrystals grow from the interface of two different materials during the crystallization of polymers. Spherulites and transcrystals are formed in polymers used as insulation materials; however, the deterioration mechanism of the electrical properties of these materials has not been established.<br>To study the relationship between the superstructure of semicrystalline polymers and their dielectric breakdown strength, we observed the structures of spherulites and transcrystals using a polarizing microscope, and at the same time compared the dielectric breakdown strengths.<br>The results indicate that the dielectric breakdown of transcrystals occurs at a higher field strength thanthat of spherulites for ac as well as dc voltages.

Journal

• IEEJ Transactions on Fundamentals and Materials

  IEEJ Transactions on Fundamentals and Materials 117 (12), 1182-1187, 1997

  The Institute of Electrical Engineers of Japan

Keywords

• ラメラ
• 球晶
• トランスクリスタル
• 絶縁破壊

Details

• CRID: 1390282679576215296
• NII Article ID: 130006839257
• NII Article ID: 10002823205
• NII Book ID: AN10136312
• DOI: 10.1541/ieejfms1990.117.12_1182
• ISSN: 13475533
• ISSN: 03854205
• NDL BIB ID: 4353382
• Web Site: https://ndlsearch.ndl.go.jp/books/R000000004-I4353382
• Web Site: https://www.jstage.jst.go.jp/article/ieejfms1990/117/12/117_12_1182/_pdf
• Data Source:
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• Abstract License Flag: Disallowed