Mechanical properties of 3-glycidoxypropyltrimethoxysilane functionalized multi-walled carbon nanotubes/epoxy composites cured by electron beam irradiation
Mechanical properties of 3-glycidoxypropyltrimethoxysilane functionalized multi-walled carbon nanotubes/epoxy composites cured by electron beam irradiation
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电子束辐照固化3-缩水甘油氧基丙基三甲氧基硅烷功能化多壁碳纳米管/环氧复合材料的力学性能
DOI：
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发表时间：
2013
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通讯作者：
Hezhou Liu
中科院分区：
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作者：
Y. Lu;Hua Li;Mingjiang Lin;W. Ng;Hezhou Liu
电子束固化技术是一种制备环氧树脂基复合材料的高速制造技术。采用电子束辐射法制备碳纳米管（CNTs）/环氧树脂复合材料，研究了3-环氧丙氧丙基三甲氧基硅烷（GPTMS）官能化多壁碳纳米管（MWNTs）对电子束固化碳纳米管/环氧树脂复合材料力学性能的影响，并分析了碳纳米管与环氧树脂之间的界面结合对复合材料性能的重要影响。结果表明，当MWNTs含量为0.1wt%时，材料的维氏硬度有了显著的提高，但随着MWNTs含量的进一步增加，材料的维氏硬度变化不大。此外，0.25重量%的GPTMS官能化的MWNTs（GPTMS-MWNTs）/环氧树脂复合材料的拉伸模量提高了34.9%。动态力学分析结果表明，在环氧树脂中加入0. 25 wt% GPTMS-MWNTs后，环氧树脂的玻璃化转变温度也提高了18.4℃（从121.1℃提高到139.5℃）。结果表明，GPTMS功能化对MWNTs/环氧树脂复合材料的力学性能有显著影响。
Electron beam (EB) curing is a high rate manufacturing technique for preparing of the epoxy composites. In this study, EB radiation was used to prepare carbon nanotubes (CNTs)/epoxy composites and the effects of 3-glycidoxypropyltrimethoxysilane (GPTMS) functionalized multi-walled carbon nanotubes (MWNTs) on the mechanical properties of EB cured MWNTs/epoxy composites were studied given the important effects on the composites performance of interfacial adhesion between the CNTs and epoxy. The results showed that a substantial increase of the Vicker’s hardness appeared at MWNTs content of 0.1 wt%, but further filler content increase led to insignificant changes. Also the tensile modulus of the 0.25 wt% GPTMS functionalized MWNTs (GPTMS-MWNTs)/epoxy composites was enhanced by 34.9%. Dynamic mechanical analysis studies revealed that filling the 0.25 wt% GPTMS-MWNTs into epoxy can produce an 18.4℃ (from 121.1℃ to 139.5℃) increase in Tg as well. It was concluded that GPTMS functionalization has a significant effect on the mechanical properties of MWNTs/epoxy composites.