Experimental investigation of the degradation mechanism of silicone rubber exposed to heat and gamma rays

Shugo Hanada, Maki Miyamoto, Naoshi Hirai, Liuqing Yang, Yoshimichi Ohki*

*この研究の対応する著者

研究成果: Article査読

40 被引用数 (Scopus)

抄録

Cable-grade silicone rubber was aged thermally or by combining heat and gamma-ray radiation, and resultant changes in chemical, thermal, mechanical and electrical properties were examined. The experimental results obtained in these analyses are clearly consistent with the mechanism that silicone rubber is degraded by forming cross-linked structures via formation of abundant siloxane bonds. With further progress of degradation, decomposition becomes dominant. Reflecting these mechanisms, mechanical properties deteriorate dramatically by losing elasticity. Both the real and imaginary parts of complex permittivity decrease, which is a contrastive difference from typical ageing behaviour of organic insulating polymers. In addition, both the elongation at break and indenter modulus are good indicators of degradation of silicone rubber.

本文言語English
ページ(範囲)92-101
ページ数10
ジャーナルHigh Voltage
2
2
DOI
出版ステータスPublished - 2017 6月

ASJC Scopus subject areas

  • 電子工学および電気工学
  • エネルギー工学および電力技術

フィンガープリント

「Experimental investigation of the degradation mechanism of silicone rubber exposed to heat and gamma rays」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