| 石墨烯-多壁碳纳米管协同增强环氧树脂复合材料的低温力学性能 |
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| 引用本文： | 沈小军,孟令轩,付绍云.石墨烯-多壁碳纳米管协同增强环氧树脂复合材料的低温力学性能[J].复合材料学报,2015,32(1):21-26. |
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| 作者姓名： | 沈小军 孟令轩 付绍云 |
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| 作者单位： | 1. 嘉兴学院 材料与纺织工程学院, 嘉兴 314000;
2. 中国科学院理化技术研究所, 北京 100190 |
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| 摘 要： | 为了提高环氧树脂的低温力学性能,采用石墨烯与多壁碳纳米管(MWCNTs)协同改性环氧树脂,系统研究了石墨烯-MWCNTs/环氧树脂复合材料的室温(RT)和低温(77K)力学性能。结果表明:当石墨烯的质量分数为0.1wt%,MWCNTs的质量分数为0.5wt%时,纳米填料的加入可同时改善环氧树脂的低温拉伸强度、弹性模量和冲击强度;在此最佳含量下,石墨烯-MWCNTs/环氧树脂复合材料在RT和77K时的拉伸强度皆达到最大值,比纯环氧树脂的拉伸强度分别提高了11.04%和43.78%。石墨烯和MWCNTs能协同提高环氧树脂的低温力学性能。
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| 关 键 词： | 多壁碳纳米管 石墨烯 环氧树脂 复合材料 低温力学性能 |
| 收稿时间： | 2013-12-25 |
Cryogenic mechanical properties of epoxy composites synergistically reinforced by graphene-multi-walled carbon nanotubes |
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| SHEN Xiaojun,MENG Lingxuan,FU Shaoyun.Cryogenic mechanical properties of epoxy composites synergistically reinforced by graphene-multi-walled carbon nanotubes[J].Acta Materiae Compositae Sinica,2015,32(1):21-26. |
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| Authors: | SHEN Xiaojun MENG Lingxuan FU Shaoyun |
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| Affiliation: | 1. College of Materials and Textile Engineering, Jiaxing University, Jiaxing 314000, China;
2. Technical Institute of Physics and Chemistry, Chinese Academy of Sciences, Beijing 100190, China |
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| Abstract: | In order to enhance the cryogenic mechanical properties of epoxy, graphene and multi-walled carbon nanotubes (MWCNTs) were used to modify epoxy synergistically. Room temperature (RT) and cryogenic (77 K) mechanical properties of graphene-MWCNTs/epoxy composites were systematically studied. The results show that simultaneous enhancements in cryogenic tensile strength, elastic modulus and impact strength can be achieved with 0.1wt% graphene and 0.5wt% MWCNTs. At this optimal formulation, the tensile strength of graphene-MWCNTs/epoxy composites reaches the highest value at both RT and 77 K, and is increased by 11.04% and 43.78% respectively, compared to pure epoxy. The cryogenic mechanical properties of epoxy can be synergistically enhanced by graphene and MWCNTs. |
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| Keywords: | multi-walled carbon nanotubes graphene epoxy composites cryogenic mechanical properties |
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