不同官能化碳纳米管对MWCNTs-碳纤维/环氧树脂复合材料力学性能的影响

郑国栋; 张清杰; 邓火英; 蒋文革; 杨小平; 隋刚

doi:10.13801/j.cnki.fhclxb.20150601.001

不同官能化碳纳米管对MWCNTs-碳纤维/环氧树脂复合材料力学性能的影响

1.
北京化工大学有机无机复合材料国家重点实验室, 北京 100029;
2.
航天材料及工艺研究所, 北京 100076

基金项目: 国家自然科学基金(51073019)

详细信息

通讯作者:
隋刚,教授,博士生导师,研究方向为树脂基复合材料。E-mail:suigang@mail.buct.edu.cn

中图分类号: TB332
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出版历程
- 收稿日期: 2014-05-04
- 修回日期: 2014-05-21
- 刊出日期: 2015-06-14

Effect of different functionalized carbon nanotubes on mechanical properties of MWCNTs-carbon fiber/epoxy composites

1.
State Key Laboratory of Organic-Inorganic Composites, Beijing University of Chemical Technology, Beijing 100029, China;
2.
Aerospace Materials and Technology Research Institute, Beijing 100076, China

摘要

摘要: 为研究加入不同官能化碳纳米管对环氧树脂力学性能的影响, 通过对羧基化多壁碳纳米管(MWCNTs-COOH)进行化学处理, 得到表面接枝乙二胺的碳纳米管(MWCNTs-EDA)。分别将MWCNTs-COOH和MWCNTs-EDA分散在环氧树脂中, 通过热熔法制备环氧树脂中含有碳纳米管的T700碳纤维预浸料, 并热压成准各向同性复合材料层合板。结果表明: MWCNTs-EDA在环氧树脂中的分散性优于MWCNTs-COOH, MWCNTs-EDA本身具有固化反应活性, 加入后对基体的交联密度影响较小。与MWCNTs-COOH相比, MWCNTs-EDA可以有效改善环氧树脂及碳纤维/环氧树脂复合材料的力学性能。当MWCNTs-EDA含量为1.0wt%时, MWCNTs-碳纤维/环氧树脂准各向同性复合材料层合板的压缩性能、弯曲性能和冲击后压缩强度分别提高了14.7%、40.9%和20.6%。
- 多壁碳纳米管 /
- 表面官能化 /
- 复合材料 /
- 碳纤维 /
- 环氧树脂 /
- 力学性能
Abstract: In order to study the effects of adding different functionalized carbon nanotubes on mechanical properties of epoxy, multi-walled carbon nanotubes with reactive amino groups(MWCNTs-EDA) were prepared by chemical processing on MWCNTs-COOH. MWCNTs-COOH and MWCNTs-EDA were dispersed in epoxy. T700 carbon fiber prepreg which epoxy containing carbon nanotubes was successfully produced by hot-melt method and then the quasi isotropic composite laminates were prepared. The results confirm that MWCNTs-EDA has better dispersion than MWCNTs-COOH. MWCNTs-EDA itself has curing reaction activity and exhibites a little effect on crosslinking density of matrix. Compared with MWCNTs-COOH, MWCNTs-EDA is more effective in enhancing the mechanical performance of epoxy and carbon fiber/epoxy composites. When the content of MWCNTs-EDA is 1.0wt%, the compression properties, flexural properties and compression strength after impact (CAI) of quasi isotropic MWCNTs-carbon fiber/epoxy composite laminates can be increased by 14.7%, 40.9% and 20.6%, respectively.
- multi-walled carbon nanotubes /
- surface functionalization /
- composites /
- carbon fiber /
- epoxy /
- mechanical properties