Microscopic Analysis of Mechanical Properties of Aligned Carbon Nanotube/Epoxy Composite
Microscopic Analysis of Mechanical Properties of Aligned Carbon Nanotube/Epoxy Composite
复制标题
定向碳纳米管/环氧树脂复合材料力学性能的微观分析
DOI：
10.1007/978-3-642-34216-5_35
复制
发表时间：
2013
期刊：
影响因子：
--
通讯作者：
C. Borgohain
中科院分区：
文献类型：
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作者：
S. Bal;J. P. Borah;C. Borgohain
本研究介绍了对齐多壁碳纳米管 (ACNT) 增强环氧复合材料的制造和表征过程及其微观分析。采用超声法制备了不同固化条件和不同重量%的复合板。进行了弹性模量、应力应变行为、硬度等机械表征以及包括扫描电子显微镜 (SEM) 和拉曼光谱在内的微观表征。还采用纳米压痕法获得了一些力学参数。通过比较和分析室温和冷藏条件下固化样品的应力-应变曲线，评估了定向碳纳米管分散对纳米复合材料力学性能的影响。随着碳纳米管重量百分比的增加，后一种情况下的模量也随之增加，从而制备出更强的样品。在上述样品中，观察到排列好的碳纳米管与环氧树脂基体的结合更加牢固，并具有桥接机制。拉曼结果还补充了上述结果，显示在冷藏样品的情况下 G 带的强度和移动增加，这证实了从基质到纳米管的更好的增强和应力转移。
This study presents a process of manufacturing and characterization of Aligned Multiwall Carbon Nanotubes (ACNTs) reinforced epoxy composites along with their microscopic analysis. Sonication method was used to prepare the composite plates with different conditions of curing along with various wt %. Mechanical characterization such as elastic modulus, stress–strain behaviour, hardness and microscopic characterization which include Scanning Electron Microscopy (SEM) and Raman spectroscopy were carried out. Nanoindentation method also had been adopted to obtain some mechanical parameters. The influence of aligned CNTs dispersion on the mechanical properties of nanocomposites have been evaluated through comparison and analysis of stress–strain curve of samples cured under room temperature and refrigerated conditions. With increase in wt % of CNTs, the modulus in latter case were increasing thus by making stronger samples. The aligned CNTs were observed to be more strongly bonded to the epoxy matrix in above samples along with bridging mechanism. Raman results also supplemented the above by showing increase in intensity and shifting of G band in case of refrigerated samples that confirms better reinforcement and stress transfer from matrix to nanotubes.