%0 Journal Article
%T 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<br>Effect of different functionalized carbon nanotubes on mechanical properties of MWCNTs-carbon fiber/epoxy composites
%A 郑国栋
%A 张清杰
%A 邓火英
%A 蒋文革
%A 杨小平
%A 隋刚
%J 复合材料学报
%D 2015
%R 10.13801/j.cnki.fhclxb.20150601.001
%X 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%。 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. 国家自然科学基金(51073019)
%K 多壁碳纳米管
%K 表面官能化
%K 复合材料
%K 碳纤维
%K 环氧树脂
%K 力学性能&lt
%K br&gt
%K multi-walled carbon nanotubes
%K surface functionalization
%K composites
%K carbon fiber
%K epoxy
%K mechanical properties
%U http://fhclxb.buaa.edu.cn/CN/abstract/abstract12625.shtml