石墨烯与多壁碳纳米管增强环氧树脂复合材料的制备及性能

卫保娟; 肖潭; 李雄俊; 王堉; 吴萍

石墨烯与多壁碳纳米管增强环氧树脂复合材料的制备及性能

1.
新疆众和股份有限公司, 乌鲁木齐 830013;
2.
中山大学工学院, 广州 510006;
3.
汕头大学理学院, 汕头 515063

基金项目: 国家自然科学基金(10772102); 广东省自然科学基金(07008103, 9152841101000001); 中山大学后备重点课题(1132249); 中山大学百人计划(3181304)

详细信息

通讯作者:
肖潭,教授,博士生导师,主要从事纳米结构和复合材料研究工作E-mail:xiaotan@mail.sysu.edu.cn

中图分类号: TB332
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出版历程
- 收稿日期: 2011-09-09
- 修回日期: 2012-04-19
- 刊出日期: 2012-10-14

Preparation and properties of graphene and MWCNTs reinforced epoxy resin composites

1.
Xinjiang Joinworld Company Limited, Urumchi 830013, China;
2.
School of Engineering, Sun Yat-sen University, Guangzhou 510006, China;
3.
College of Science, Shantou University, Shantou 515063, China

摘要

摘要: 对多壁碳管(MWCNTs)进行改性处理得到酸化碳管(MWCNTs-COOH)和环氧化碳管(MWCNTs-Epon828), 将石墨烯(Graphene)与不同的碳管分别混合, 制备出三种Graphene-MWCNTs/环氧树脂(EP)复合材料。通过拉伸和热重实验研究了石墨烯与MWCNTs的协同作用、两者的含量以及MWCNTs功能化方法对复合材料力学和热学性能的影响。结果表明: 石墨烯与MWCNTs的协同增强明显优于MWCNTs单独增强。当石墨烯和MWCNTs质量分数仅为0.1%时, Graphene-MWCNTs-Epon828/EP的拉伸强度达最大值, 其拉伸强度、弹性模量和断裂伸长率分别较纯EP增加了35%、 65%和34%。石墨烯和MWCNTs的加入使Graphene-MWCNTs/EP复合材料的热稳定性均有所提高。
- 石墨烯 /
- 多壁碳纳米管 /
- 功能化 /
- 复合材料 /
- 力学性能
Abstract: The multi-walled carbon nanotubes (MWCNTs) were functionalized to produce oxidized MWCNTs (MWCNTs-COOH) and epoxidized MWCNTs (MWCNTs-Epon828). Three types of Graphene-MWCNTs/EP composites were prepared by adding the graphene sheets and different types of MWCNTs into the epoxy resin (EP), respectively. By means of tensile test and thermal gravimetric analysis, the synergetic effects of graphene and MWCNTs, the effects of their content and the methods of MWCNT functionalization on the mechanical and thermal properties of the composites were studied. The results indicate that the synergetic reinforcement of the graphene and MWCNTs has a better performance than that of sole MWCNTs. Even with 0.1% mass fraction of the graphene and MWCNTs, the tensile strength of Graphene-MWCNTs-Epon828/EP composite approaches the ultimate value: The tensile strength, elastic modulus, and the elongation at break have been increased by 35%, 65% and 34%, compared with the pure EP, respectively. The thermal stability of all the Graphene-MWCNTs/EP composites are improved with the addition of graphene and MWCNTs.
- graphene sheet /
- multi-walled carbon nanotube /
- functionalization /
- composites /
- mechanical properties