シリコーンゴム表面の局部アーク放電が撥水性低下に与える影響－Dynamic Drop Testにおける放電様相と水滴転落速度の関係－

カテゴリ: 論文誌(論文単位)

グループ名: 【A】基礎・材料・共通部門

発行日: 2020/09/01

タイトル(英語): Effect of Local Arc Discharge on Hydrophobicity Decrease of Silicone Rubber Surface－Relationship between Discharge Aspect and Water Drop Velocity at Dynamic Drop Test－

著者名: 三好　雅仁（（一財）電力中央研究所 電力技術研究所），本間　宏也（（一財）電力中央研究所 電力技術研究所），五島　久司（（一財）電力中央研究所 電力技術研究所）

著者名(英語): Masahito Miyoshi (Electric Power Engineering Research Lab, CRIEPI), Hiroya Homma (Electric Power Engineering Research Lab, CRIEPI), Hisashi Goshima (Electric Power Engineering Research Lab, CRIEPI)

キーワード: シリコーンゴム，ダイナミックドロップ試験，撥水性，局部アーク放電，ポリマーがいし　　silicone rubber，Dynamic Drop Test，hydrophobicity，local arc discharge，polymeric insulator

要約(英語): Various methods have been proposed to evaluate hydrophobicity of silicone rubber used for sheds of polymeric insulators. CIGRE WG D1.14 has proposed Dynamic Drop Test (DDT) method to evaluate the hydrophobicity changes of the materials. In this paper, we measured static contact angle, hydrophobicity class in spray method, and drop velocity of water droplets, in order to observe the change in hydrophobicity of silicone rubber surface suffered to local arc discharge at DDT. Because of the hydrophobicity decreases due to the local arc discharge, the water droplet changes from a spherical to a water film. In particular, changes of initial state in hydrophobicity can be observed by measuring the drop velocity of water droplets. And the correlation was confirmed with the cumulative charge of local arc discharge. Therefore, the water drop velocity was effective for the evaluation of hydrophobicity change.

本誌: 電気学会論文誌A（基礎・材料・共通部門誌） Vol.140 No.9 （2020） 特集：電気電子絶縁材料システムシンポジウム

本誌掲載ページ: 451-456 p

原稿種別: 論文／日本語

電子版へのリンク: https://www.jstage.jst.go.jp/article/ieejfms/140/9/140_451/_article/-char/ja/