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材料导报  2025, Vol. 39 Issue (16): 24060036-7    https://doi.org/10.11896/cldb.24060036
  高分子与聚合物基复合材料 |
纳米氧化锌改性间位芳纶绝缘纸力学和热学性能的分子动力学模拟
李亚莎*, 王璐敏, 庞梦昊, 田泽, 曾跃凯, 赵光辉
三峡大学电气与新能源学院,湖北 宜昌 443002
Molecular Dynamics Simulation of Mechanical and Thermal Properties of Nano-zinc Oxide Modified Meta-aramid Insulating Paper
LI Yasha*, WANG Lumin, PANG Menghao, TIAN Ze, ZENG Yuekai, ZHAO Guanghui
School of Electrical and New Energy, China Three Gorges University, Yichang 443002, Hubei, China
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摘要 间位芳纶以其优异的热稳定性和介电性能,在电气绝缘领域中得到广泛应用。为了探究纳米氧化锌(nano-ZnO)掺杂对间位芳纶绝缘纸热学性能和力学性能的影响,本工作在Materials Studio中建立了纯间位芳纶模型以及nano-ZnO含量分别为3%(质量分数,下同)、6%、9%、12%的间位芳纶与nano-ZnO复合模型。利用分子动力学模拟计算了改性前后间位芳纶的内聚能密度、热导率、力学性能、玻璃化转变温度等参数。结果表明:在nano-ZnO掺杂量为9%时,间位芳纶的各项性能达到最佳。相较于未改性模型,其内聚能密度提升了64%,热导率提升了53%,玻璃化转变温度提升了37 K,杨氏模量和剪切模量分别提升了33%和28%。本工作可为间位芳纶绝缘纸的掺杂及性能调控提供理论依据和参考。
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李亚莎
王璐敏
庞梦昊
田泽
曾跃凯
赵光辉
关键词:  间位芳纶绝缘纸  纳米氧化锌(nano-ZnO)  热学性能  力学性能    
Abstract: Meta-aramid is widely used in the field of electrical insulation due to its excellent thermal stability and dielectric properties. In order to explore the effect of nano-zinc oxide (nano-ZnO) doping on the thermal and mechanical properties of meta-aramid insulating paper, a pure meta-aramid model and a composite model of meta-aramid and nano-ZnO with nano-ZnO content of 3%, 6%, 9% and 12% were established in Mate-rials Studio. Molecular dynamics simulations were used to calculate the cohesive energy density, thermal conductivity, mechanical properties, glass transition temperature and other parameters of meta-aramid before and after modification. The results show that when the doping content of nano-ZnO is 9%, the properties of meta-aramid reach the best. Compared with the unmodified model, the cohesive energy density was increased by 64%, thermal conductivity increased by 53%, the glass transition temperature has been increased by 37 K, the Young’s modulus and shear modulus increased by 33% and 28%, respectively. This work can provide a theoretical basis and reference for the doping and performance control of meta-aramid insulating paper.
Key words:  meta-aramid insulation paper    nano-zinc oxide(nano-ZnO)    thermal property    mechanical property
出版日期:  2025-08-15      发布日期:  2025-08-15
ZTFLH:  TM215  
基金资助: 国家自然科学基金(51577105)
通讯作者:  李亚莎,博士,三峡大学电气与新能源学院教授、博士研究生导师。目前主要从事电力系统绝缘老化与电磁场数值仿真计算等研究工作。liyasha@ctgu.edu.cn   
引用本文:    
李亚莎, 王璐敏, 庞梦昊, 田泽, 曾跃凯, 赵光辉. 纳米氧化锌改性间位芳纶绝缘纸力学和热学性能的分子动力学模拟[J]. 材料导报, 2025, 39(16): 24060036-7.
LI Yasha, WANG Lumin, PANG Menghao, TIAN Ze, ZENG Yuekai, ZHAO Guanghui. Molecular Dynamics Simulation of Mechanical and Thermal Properties of Nano-zinc Oxide Modified Meta-aramid Insulating Paper. Materials Reports, 2025, 39(16): 24060036-7.
链接本文:  
https://www.mater-rep.com/CN/10.11896/cldb.24060036  或          https://www.mater-rep.com/CN/Y2025/V39/I16/24060036
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