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Octavinyl polyhedral oligomeric silsesquioxane on tailoring the DC electrical characteristics of polypropylene

查看全文 作　　者：Xiaosi [1]Lin;Wah Hoon [1]Siew;John [2]Liggat;Martin [1]Given;Jinliang [3]He 高影响力作者 机构地区：[1]Department of Electronic and Electrical Engineering,University of Strathclyde,Glasgow,UK;[2]Department of Pure and Applied Chemistry,University of Strathclyde,Glasgow,UK;[3]State Key Laboratory of Power System,Department of Electrical Engineering,Tsinghua University,Beijing,China高影响力机构 出　　处：《High Voltage》索引2022年第7卷第1期,共10页高影响力期刊 基　　金：supported in part by the National Key R&D Program of China(grant 2018YFE0200100);the National Natural Science Foundation of China under grant 51921005. 摘　　要：This work reports the effect of octavinyl polyhedral oligomeric silsesquioxane(OvPOSS)on tuning the electrical performance of polypropylene(PP).OvPOSS with different content are introduced into PP using the solution method.The microstructural morphology,crystallinity behaviour,breakdown strength,DC conductivity,space charge formation,and trapping level distribution are measured.The results indicate that the OvPOSS nanofiller can be dispersed uniformly with a doping content of 2.0 phr or less.The DC conductivity is decreased,and the breakdown strength of OvPOSS/PP nano-composites is significantly increased.The space charge accumulation of the OvPOSS/PP nanocomposites is significantly suppressed due to the introduction of deeper traps by the OvPOSS nanofiller.Finally,the experimental results demonstrate that the OvPOSS nanofiller can greatly increase the electrical performance of the base PP and the OvPOSS/PP nanocomposites have much potential for HVDC applications.They further demonstrate that the PP is environmental‐friendly due to its thermo‐plastic property,which can be recycled after the manufacture. 关 键 词：ELECTRICAL FILLER CONTENT
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