Toughening of cycloaliphatic epoxy resin by multiwalled carbon nanotubes
Toughening of cycloaliphatic epoxy resin by multiwalled carbon nanotubes
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DOI：
10.1002/app.28590
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发表时间：
2008-11
影响因子：
3
通讯作者：
Xiaohua Zhang;Zhenghua Zhang;Weijian Xu;Fancai Chen;Jianru Deng;Xiao-Qing Deng
中科院分区：
文献类型：
--
作者：
Xiaohua Zhang;Zhenghua Zhang;Weijian Xu;Fancai Chen;Jianru Deng;Xiao-Qing Deng
采用混酸处理的多壁碳纳米管（MWCNTs）对脂环族环氧树脂3，4-环氧环己基甲基-3 ′，4 ′-环氧环己烷羧酸酯（ERL-4221）进行增韧改性。采用拉曼光谱对MWCNT/ERL-4221复合材料进行了表征，并对其力学性能进行了研究。复合材料的拉伸强度从31.9 MPa到55.9 MPa的显着增加，得到通过添加仅0.05重量%的多壁碳纳米管。当碳纳米管含量为0.5wt%时，复合材料的拉伸强度和断裂能最大，分别为62.0MPa和490 Ncm。通过场发射扫描电镜对复合材料断口形貌的观察，证实了裂纹的钉扎-前缘弯曲和桥联增韧机制。© 2008 Wiley Periodicals，Inc.应用聚合物科学杂志，2008年
The toughness of cycloaliphatic epoxy resin 3,4-epoxycyclohexylmethyl-3′,4′-epoxycyclohexane carboxylate (ERL-4221) has been improved by using multiwalled carbon nanotubes (MWCNTs) treated by mixed acids. The MWCNT/ERL-4221 composites were characterized by Raman spectroscopy and their mechanical properties were investigated. A significant increase in the tensile strength of the composite from 31.9 to 55.9 MPa was obtained by adding only 0.05 wt % of MWCNTs. And a loading of 0.5 wt % MWCNTs resulted in an optimum tensile strength and cracking energy, 62.0 MPa and 490 N cm, respectively. Investigation on the morphology of fracture surface of the composites by field emission scanning electron microscopy demonstrated the crack pinning-front bowing and bridging mechanisms of toughening. © 2008 Wiley Periodicals, Inc. J Appl Polym Sci, 2008