Relation between morphology change due to mechanical kneading and dielectric breakdown characteristics in ethylene-styrene copolymers

Yasuhiro Tanaka*, Toshinobu Otsubo, Yoshimichi Ohki, Masaaki Ikeda, Fumihiko Yazaki

*この研究の対応する著者

研究成果: Conference contribution

1 被引用数 (Scopus)

抄録

The relation between morphological change, induced by copolymerized benzene rings or by kneading, and the dielectric strength of ethylene-styrene copolymer was studied. In unkneaded samples, the lamellar thickness decreases and the lattice constant along the a-axis increases with increasing styrene content. However, in kneaded samples, the lamellar thickness and the lattice constant remain constant up to a styrene content of 3.10 wt%. Spherulite is observed with a polarizing microscope in unkneaded samples, but it disappears in kneaded samples. Kneaded samples, especially the kneaded sample with a styrene content of 3.10 wt%, have higher breakdown strength than unkneaded samples. The styrene content of the sample showing the highest breakdown strength increases as the temperature decreases. At -50°C or -80°C, the sample with a styrene content of 15.40 wt% has the highest breakdown strength of all the samples. It is considered that benzene rings are moved to the interfacial region between lamellar and amorphous parts by kneading and hinder the acceleration of electrons along the lamellae. This effect of benzene rings becomes pronounced in the low-temperature region where the breakdown process is electronic.

本文言語English
ホスト出版物のタイトルProc 3 Int Conf Prop Appl Dielectr Mater
出版社Publ by IEEE
ページ1169-1172
ページ数4
ISBN(印刷版)0879425687
出版ステータスPublished - 1991 12月 1
外部発表はい
イベントProceedings of the 3rd International Conference on Properties and Applications of Dielectric Materials - Tokyo, Jpn
継続期間: 1991 7月 81991 7月 12

出版物シリーズ

名前Proc 3 Int Conf Prop Appl Dielectr Mater

Other

OtherProceedings of the 3rd International Conference on Properties and Applications of Dielectric Materials
CityTokyo, Jpn
Period91/7/891/7/12

ASJC Scopus subject areas

  • 工学(全般)

フィンガープリント

「Relation between morphology change due to mechanical kneading and dielectric breakdown characteristics in ethylene-styrene copolymers」の研究トピックを掘り下げます。これらがまとまってユニークなフィンガープリントを構成します。

引用スタイル