Effect of fumed silica content on the microstructure and hydrophobicity recovery of silicon rubber

被引：0

作者：

Wang, Kang ^{[1
,2
]}

Wang, Jianguo ^{[1
]}

Zheng, Feng ^{[3
]}

Fang, Pengfei ^{[3
]}

Peng, Xiangyang ^{[4
]}

Xu, Zhihai ^{[4
]}

机构：

[1] School of Electrical Engineering, Wuhan University, Wuhan,430072, China

[2] State Grid Jibei Electric Power Company Limited Electric Power Research Institute, Beijing,100045, China

[3] Department of Physics & Hubei Nuclear-Solid Physics Key Laboratory, Wuhan University, Wuhan,430072, China

[4] Guangdong Power Grid Company Electric Power Research Institute, Guangzhou,510080, China

来源：

Diangong Jishu Xuebao/Transactions of China Electrotechnical Society | 2016年 / 31卷 / 12期

关键词：

Plasma applications - Positrons - Silica - Electrons - Silicon - Microstructure - Hydrophobicity - Recovery;

D O I：

暂无

中图分类号：

学科分类号：

摘要：

Hydrophobicity recovery is an important characteristic of silicon rubber. Silica as reinforcing filler is the basic material of silicon rubber composite insulators. In order to study the microstructure and hydrophobicity recovery of silicon rubber with different contents of silica, the silicon rubber samples with different quality contents were refined. The results of the positron lifetime spectra showed fumed silica interacted with rubber chains. Since fumed silica could be served as physical cross-link junction, when the content of fumed silica increased, the cross-link degree of whole system also increased. On the other hand, more fumed silica resulted in bigger size agglomeration. Thus more positrons annihilated in fumed silica, and suppressed the production of Ps. So τ3 increased while I3 and I4 both decreased. Otherwise, after 5 min Ar plasma treatment, the results of the hydrophobicity recovery showed that increasing fumed silica would decrease hydrophobic recovery speed. But too much fumed silica will affect the hydrophobicity recovery of silicone rubber and shorten the lifetime. © 2016, The editorial office of Transaction of China Electrotechnical Society. All right reserved.

引用

页码：31 / 39