Influence of imidazolium ionic liquids as organic filler dispersant on electrical properties of chitin/epoxy composites  

作　　者：Kai Yin Qihong Fan Jing Li Taqi ur Rahman Tianyin Zhang Ashish Paramane Xiangrong Chen 

机构地区：[1]School of Information and Electrical Engineering,Hangzhou City University,Hangzhou,China [2]College of Electrical Engineering,Zhejiang University,Hangzhou,China [3]State Grid Tianjin Power Chengnan District Supply Company,Tianjin,China [4]Electrical Engineering Department,National Institute of Technology,Silchar,Assam,India

出　　处：《High Voltage》2024年第4期930-938,共9页高电压（英文）

基　　金：Key Project of Natural Science Foundation of Zhejiang Province,Grant/Award Number:LZ22E070001;China Postdoctoral Science Fundation,Grant/Award Number:2023M733031。

摘　　要：Ionic liquid(IL)as the dispersant can help disperse the organic nanofillers to improve the performance of epoxy resin remarkably.However,the effect of IL on the electrical properties of epoxy composites is not well documented.This comprehensive study consists of the preparation,material characterisation and systematical investigation of electrical properties of 1-Butyl-3-methylimidazole hexafluorophosphate-modified chitin fibre/epoxy composites.The findings show that introducing IL into a chitin/epoxy composite can minimise porosity defects and improve the compatibility between filler and matrix.However,a high concentration of IL induces severe charge injection into chitin/epoxy composites and internal electric field distortion.The addition of 0.75%–1.5%mass fraction IL results in maximum enhancement in the AC breakdown strength of the chitin/epoxy composite(by~71%)compared with the non-IL composites.The nonlinear conductivity and non-uniform charge injection phenomena of IL-modified composites can be attributed to the movement of radicals and anions due to the decomposition of IL.Through this study,it is highly expected that the organic filler dispersion in the epoxy matrix can be optimised by tuning IL to improve the insulation properties.

关 键 词：COMPOSITES COMPOSITE FILLER 

分 类 号：TB33[一般工业技术—材料科学与工程]