The influence of TiO₂ nanoparticle incorporation on surface potential decay of corona-resistant polyimide nanocomposite films

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• 作者：Junwei Zha^a ; ^b ; ^{zjw8226@hotmail.com"" rel=""nofollow} ; George Chen^b ; Zhimin Dang^a ; ^c ; ^{dangzm@ustb.edu.cn"" rel=""nofollow} ; Yi Yin^c
• 关键词：PI nanocomposite films ; Corona charging ; Surface potential decay ; Surface potential cross-over
• 刊名：Journal of Electrostatics
• 出版年：2011
• 出版时间：June 2011
• 年：2011
• 卷：69
• 期：3
• 页码：255-260
• 全文大小：926 K

文摘

PI nanocomposite films containing surface modified nanoparticles by employing silane coupling agent were prepared using in-situ dispersion polymerization process. The surface potential decay measurements on films were investigated over the different negative corona-charged voltages and times in a controlled environment where temperature and relative humidity were kept at 21 °C and 45 % , respectively. There is a significant change in the surface potential decay characteristics after nano-fillers were introduced into polyimide. The surface potential decay pattern depends also on the amount of nano-fillers. The possible surface potential decay and corona resistance mechanisms responsible for the observed phenomena were discussed.