硅橡胶
材料科学
电弧闪光
衰减全反射
复合材料
扫描电子显微镜
X射线光电子能谱
红外光谱学
化学工程
化学
绝缘体(电)
有机化学
工程类
作者
Zhenlian An,Ruochen Shen,Weizhe Gao,Xiaoqiong Gu,Weijun Chen,Long Yang,Wei Yang,Zhuo Zhang
摘要
ABSTRACT Silicone rubber (SIR) samples are fluorinated using a F 2 /N 2 mixture at different temperatures. Physicochemical characteristics are analyzed by attenuated total reflection infrared spectroscopy, X‐ray photoelectron spectroscopy, and scanning electron microscopy. Basic properties of the fluorinated surface layers are investigated, and the intrinsic alternating current (AC) flashover performance and tracking resistance of the surface fluorinated samples are evaluated. The flashover test results indicate that the fluorination leads to an improvement in AC flashover performance of the SIR material, as a result of the competition between the favorable effect of the increase in surface conduction and the adverse effect of a likely increase in surface layer permittivity. The increase in AC flashover voltage is associated with the voltage‐increasing mode of the flashover test. The flashover test results also show an improved tracking resistance of the SIR material by the fluorination, and the improvement is especially significant for the fluorinated surface layer that has less cleavage of SiC bonds or a good compactness as well as a large thickness. © 2019 Wiley Periodicals, Inc. J. Appl. Polym. Sci. 2020 , 137 , 48556.
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