Abstract This article presents an experimental investigation into the adhesion between aluminum and epoxy nanocomposites reinforced with multi-walled carbon nanotubes (MWCNT's). The nanotubes are dispersed in epoxy chemically with the aid of a surfactant, rather than mechanically via high shear mixing or ultrasonication. Four MWCNT weight fractions are considered viz. 0%, 0.1%, 0.5% and 1%. The adhesion with aluminum is tested via end-notched flexure tests conducted on specimens consisting of Aluminum strips adhered together with various epoxy nanocomposite glues. The best results are obtained for 1% MWCNT, where the tests show a notable increase in adhesion, evidenced by an intact bond despite considerable plastic deformation of Aluminum. However, the peak load capacity is seen to be not enhanced. The higher adhesion with 1% MWCNT addition is seen to successfully suppress the brittle debonding failures even at very high levels of adherend plasticity. For this weight fraction the overall response is highly ductile involving shearing of the glue and is desirable for engineering applications. Despite promising results, the surfactant itself is seen to be not very effective as a dispersing agent for the epoxy resin considered here.

中文翻译：

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表面活性剂辅助多壁碳纳米管在环氧纳米复合材料中的分散和与铝的粘附

摘要 本文对铝和用多壁碳纳米管 (MWCNT) 增强的环氧树脂纳米复合材料之间的粘附性进行了实验研究。纳米管在表面活性剂的帮助下以化学方式分散在环氧树脂中，而不是通过高剪切混合或超声处理以机械方式分散。四个 MWCNT 重量分数被认为是。0%、0.1%、0.5% 和 1%。通过对铝条与各种环氧纳米复合胶粘在一起的试样进行端部缺口弯曲试验来测试与铝的附着力。对于 1% MWCNT 获得了最好的结果，其中测试显示附着力显着增加，尽管铝发生了相当大的塑性变形，但仍能通过完整的粘合来证明这一点。然而，峰值负载能力并未增强。即使在非常高的被粘物塑性水平下，添加 1% MWCNT 的更高附着力也能成功抑制脆性脱粘失败。对于这个重量分数，整体响应具有高度的延展性，涉及胶水的剪切，是工程应用所需要的。尽管结果令人鼓舞，但表面活性剂本身被视为作为此处考虑的环氧树脂的分散剂不是很有效。