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具有低密度、高强度和高模量等优异力学性能的碳纳米管(CNTs)是环氧树脂(EP)基体的理想增强材料,然而CNTs在EP基体中分散性较差,并且其与EP之间难以形成有效的结合界面,这成为制约CNTs/EP复合材料力学性能进一步增强的关键因素,对CNTs进行官能化改性则是解决上述问题的有效途径之一。从增强EP力学性能方面介绍了CNTs的羧基化、胺基化和硅烷化等官能团化改性方法的研究应用进展,总结了其改性机理,结合该领域研究中的一些不足以及实际应用的需求,指出了进一步的研究方向。
Carbon nanotubes (CNTs) with excellent mechanical properties such as low density, high strength and high modulus are ideal reinforcements for epoxy resin (EP) matrix. However, CNTs have poor dispersibility in EP matrix, It is difficult to form an effective bonding interface between the CNTs / EP composites. This becomes one of the key factors that constrain the mechanical properties of the CNTs / EP composites. Functional modification of the CNTs is an effective way to solve the above problems. In this paper, we introduced the research progress of functionalization of CNTs, such as carboxylation, amination and silanization, from the aspects of enhanced EP mechanical properties, summarized the modification mechanism, combined with some shortcomings in the field of research and practical application , Pointed out further research direction.