通过调控纯化和功能化路径增强碳纳米管/环氧树脂软纳米复合材料的静态和动态力学强度。

Augmenting static and dynamic mechanical strength of carbon nanotube/epoxy soft nanocomposites via modulation of purification and functionalization routes.

机构信息

Department of Mechanical Engineering, Indian Institute of Technology Ropar, Rupnagar, Punjab 140001, India.

出版信息

Soft Matter. 2018 Jan 3;14(2):291-300. doi: 10.1039/c7sm01768e.

Abstract

A detailed experimental investigation was carried out to establish the relationship between CNT purification and functionalization routes and the average response of CNT/epoxy nanocomposites under static and dynamic loading. It was shown that the relative improvement in the mechanical properties of the epoxy matrix due to the addition of CNTs depends on the choice of purification and functionalization steps. A better dispersion of CNTs was recorded for the functionalized CNTs as compared to the oxidized and CVD grown CNTs. Moreover, tensile, 3-point bending and nanoDMA testing performed on nanocomposites processed with CVD-grown, oxidized and functionalized CNTs revealed that COOH functionalization after the oxidation of CNTs at 350 °C is the optimized processing route to harness the excellent properties of CNTs in CNT/epoxy nanocomposites.

摘要

进行了详细的实验研究，以确定 CNT 纯化和功能化路线与 CNT/环氧纳米复合材料在静态和动态加载下的平均响应之间的关系。结果表明，由于添加 CNT 而导致的环氧基体力学性能的相对提高取决于纯化和功能化步骤的选择。与氧化和 CVD 生长的 CNT 相比，功能化的 CNT 具有更好的分散性。此外，对用 CVD 生长、氧化和功能化的 CNT 制备的纳米复合材料进行的拉伸、三点弯曲和纳米 DMA 测试表明，在 350°C 下对 CNT 进行氧化后进行 COOH 功能化是利用 CNT/环氧纳米复合材料中 CNT 的优异性能的最佳处理路线。