Research on Dielectric Properties of Epoxy Resin Composites Doped with Carbon Nanotubes and Montmorillonite
Zhang Mingyan1,2, Wang Chen1,2, Wu Shulong2, Sun Guohui3, Wu Zijian1,2
1. Dielectric Engineering Key Laboratory of Ministry of Education Harbin University of Science and Technology Harbin 150040 China; 2. Department of Material Science and Technology Harbin University of Science and Technology Harbin 150040 China; 3. Shanghai Yinghe Chemical Co. Ltd Shanghai 201300 China
Abstract：The aim of this paper is to prepare epoxy resin (EP) composites (EP/C-MWNTs/O- MMT) by solution blending method, in which the resin matrix was modified by multi-walled carbon nanotubes functionalized with carboxylic acid group (C-MWNTs) and organic montmorillonite (O-MMT). The surface morphologies of C-MWNTs and O-MMT were observed and analyzed by SEM and FT-IR, and the dielectric properties of composites were tested to explore the effect of doping amount of C-MWNTs. The result shows that the volume resistivity of EP/C-MWNTs/O-MMT composites with a little C-MWNTs and defined amount O-MMT only decreases by one order of magnitude compared with the unmodified epoxy. Meanwhile, the breakdown strength of composites increases slightly. Due to the inhibition of interface between resin matrix and nano- materials on dipole polarization to some extent, the dielectric constant of modified EP composites reduces. The dielectric constant of modified EP composites can reduce to 2.9 when the doping amounts of O-MMT and C-MWNTs are 6.0wt% and 0.3wt% respectively. The dielectric loss of nano-composites has no obvious change.
张明艳, 王晨, 吴淑龙, 孙国辉, 吴子剑. 碳纳米管、蒙脱土共掺杂环氧树脂复合材料介电性能研究[J]. 电工技术学报, 2016, 31(10): 151-158.
Zhang Mingyan, Wang Chen, Wu Shulong, Sun Guohui, Wu Zijian. Research on Dielectric Properties of Epoxy Resin Composites Doped with Carbon Nanotubes and Montmorillonite. Transactions of China Electrotechnical Society, 2016, 31(10): 151-158.
[1] 张明艳, 孙婷婷, 张晓虹, 等. 蒙脱土改性环氧树脂复合材料的制备及性能研究[J]. 电工技术学报, 2006, 21(4): 29-34. Zhang Mingyan, Sun Tingting, Zhang Xiaohong, et al. Study of preparation and properties of organo- montmorillonite modified epoxy nanocomposite[J]. Transactions of China Electrotechnical Society, 2006, 21(4): 29-34. [2] 王旗, 李喆, 尹毅. 微、纳米无机颗粒/环氧树脂复合材料击穿强度性能[J]. 电工技术学报, 2014, 29(12): 230-235. Wang Qi, Li Zhe, Yin Yi. The effect of micro and nano inorganic filler on the breakdown strength of epoxy resin[J]. Transactions of China Electro- technical Society, 2014, 29(12): 230-235. [3] 王岚, 党智敏. 碳纳米管填充的高介电常数聚合物基复合电介质材料[J]. 电工技术学报, 2006, 21(4): 24-28. Wang Lan, Dang Zhimin. Carbon nanotube filled polymer-based dielectric composites with high dielectricconstant[J]. Transactions of China Electro- technical Society, 2006, 21(4): 24-28. [4] Elimat M Z M, Hamideen S, Schulte K I, et al. Dielectric properties of epoxy/short carbon fiber composites[J]. Journal of Materials Science, 2010, 45(19): 5196-5203. [5] 葛金龙, 王传虎, 秦英月, 等. 环氧树脂/蒙脱土纳米复合材料性能研究进展[J]. 热固性树脂, 2009, 24(3): 56-59. Ge Jinlong, Wang Chuanhu, Qin Yingyue, et al. Advance in performance research of epoxy/mont- morillonite nanocomposite[J]. Thermosetting Resin, 2009, 24(3): 56-59. [6] 王琼, 秦辉, 杨敏鸽, 等. 纳米粒子改性环氧树脂的研究进展[J]. 材料导报, 2011, 25(18): 170-173. Wang Qiong, Qin Hui, Yang Mingge, et al. Research advances in epoxy resins modified by nanopar- ticles[J]. Materials Review, 2011, 25(18): 170-173. [7] 徐曼, 冯军强, 曹晓珑. 纳米银-环氧树脂复合电介质的介电特性[J].中国电机工程学报, 2009, 29(4): 117-122. Xu Man, Feng Junqiang, Cao Xiaolong. Dielectric property of nano silver/epoxy resin composite[J]. Proceedings of the CSEE, 2009, 29(4): 117-122. [8] 张明艳, 隋珊, 陈金玉, 等. 功能化碳纳米管/环氧树脂复合材料性能研究[J]. 电工技术学报, 2014, 29(4): 97-102. Zhang Mingyan, Sui Shan, Chen Jinyu, et al. Study of properties of functional multi-walled carbon nanotubes/ epoxy nanocomposites[J]. Transactions of China Electrotechnical Society, 2014, 29(4): 97-102. [9] Wang Fang, Wang Jingwen, Li Shuqin, et al. Dielectric properties of epoxy composites with modified multiwalled carbon nanotubes[J]. Polymer Bulletin, 2009, 63(1): 101-110. [10] 刘静, 田春蓉, 王建华. CNTs/硅橡胶纳米复合材料导电性能的研究[J]. 橡胶工业, 2008, 55(11): 665-668. Liu Jing, Tian Chunrong, Wang Jianhua. Study on the conductivity of CNTs/rubber nano-composites[J]. Rubber Industry, 2008, 55(11): 665-668. [11] Kim Y J, Shin T S, Choi H D, et al. Electrical conductivity of chemically modified multi-walled carbon nanotube/epoxy composites[J]. Carbon, 2005, 43(1): 23-30.
2016, Vol. 31 
