电工技术学报  2019, Vol. 34 Issue (zk2): 457-464    DOI: 10.19595/j.cnki.1000-6753.tces.L80536
电工理论与电工材料 |
混酸功能化碳纳米管掺杂对环氧树脂导电和导热性能的影响
王闯1, 赵朗1, 贾静1, 王德意1, 彭宗仁2
1. 西安理工大学智慧能源技术研究中心 西安 710048;
2. 电力设备电气绝缘国家重点实验室(西安交通大学) 西安 710049
Effects of Mixed Acid Functionalization on Electric and Thermal Conductivities of Carbon Nanotube/Epoxy Resin Composites
Wang Chuang1, Zhao Lang1, Jia Jing1, Wang Deyi1, Peng Zongren2
1. Institute of Intelligent Energy Technology Xi’an University of Technology Xi’an 710048 China;
2. State Key Laboratory of Electrical Insulation and Power Equipment Xi’an Jiaotong University Xi’an 710049 China
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摘要 环氧树脂广泛应用于电力系统的设备中,采用碳纳米管对环氧树脂进行改性,可以有效地改变其导电性能和导热性能。该文采用混酸功能化处理后的多壁碳纳米管掺杂了改性的环氧树脂。此方法处理后碳纳米管的长径比降低,因此选择两种长径比的碳纳米管与其进行对比:一种为混酸处理前的碳纳米管;另一种为与混酸处理后长径比接近的碳纳米管。对比三种碳纳米管掺杂环氧树脂后的导电性能和导热性能,混酸化处理方法有利于碳纳米管的分散,但是碳纳米管长径比的降低以及与环氧树脂之间形成的界面层都不利于复合材料导电和导热性能的提高。因此要获得更好的导热和导电性能,处理方法是在分散均匀的基础上,不降低长径比,同时降低填料与基体之间界面的影响。
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王闯
赵朗
贾静
王德意
彭宗仁
关键词 混酸化处理碳纳米管导电性能导热性能    
Abstract:Epoxy resin is widely used in power equipment. The modification of epoxy resin by carbon nanotubes can effectively change its electric and thermal conductivities. In this paper, the epoxy resin was modified by mixed-acid functionalized multi-walled carbon nanotubes. The aspect ratio of carbon nanotubes decreased after treatment, so two kinds of carbon nanotubes with different aspect ratios were selected for comparison. One was carbon nanotubes before mixed acid treatment, and the other was carbon nanotubes with the same aspect ratio after mixed acid treatment. Comparing the electric and thermal conductivities of these three kinds of carbon nanotubes doped with epoxy resin, mixed acidification treatment is beneficial to the dispersion of carbon nanotubes. However, the decrease of the aspect ratio of carbon nanotubes and the interfacial layer formed between carbon nanotubes and epoxy resin are not conducive to the improvement of electric and thermal conductivities of composites. Therefore, in order to obtain better electric and thermal conductivities, the treatment method should be based on uniform dispersion, without reducing the aspect ratio, and at the same time reducing the influence of the interface between filler and matrix.
Key wordsMixed acidification    carbon nanotubes    electric conductivity    thermal conductivity   
收稿日期: 2018-07-01      出版日期: 2020-01-02
PACS: TM215  
作者简介: 王 闯 男,1985年生,博士,研究方向为复合绝缘系统中的界面效应、环氧树脂复合材料介电与机械性能,超、特高压电力设备绝缘结构设计及优化。E-mail: 249137339@qq.com(通信作者)赵 朗 男,1993年生,硕士研究生,研究方向为电力设备界面处多物理场耦合效应的释缓和结构优化。E-mail: 1370252226@qq.com
引用本文:   
王闯, 赵朗, 贾静, 王德意, 彭宗仁. 混酸功能化碳纳米管掺杂对环氧树脂导电和导热性能的影响[J]. 电工技术学报, 2019, 34(zk2): 457-464. Wang Chuang, Zhao Lang, Jia Jing, Wang Deyi, Peng Zongren. Effects of Mixed Acid Functionalization on Electric and Thermal Conductivities of Carbon Nanotube/Epoxy Resin Composites. Transactions of China Electrotechnical Society, 2019, 34(zk2): 457-464.
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https://dgjsxb.ces-transaction.com/CN/10.19595/j.cnki.1000-6753.tces.L80536          https://dgjsxb.ces-transaction.com/CN/Y2019/V34/Izk2/457