碳纳米管（CNT）功能化对环氧-CNT复合材料的影响。
Effect of carbon nanotube (CNT) functionalization in Epoxy-CNT composites.
作者信息
Roy Sagar, Petrova Roumiana S, Mitra Somenath
机构信息
Department of Chemistry and Environmental Science, New Jersey Institute of Technology, Newark, NJ 07102, USA.
出版信息
Nanotechnol Rev. 2018 Dec;7(6):475-485. doi: 10.1515/ntrev-2018-0068. Epub 2018 Sep 28.
Abstract
The effect of carbon nanotube (CNT) functionalization in altering the properties of Epoxy-CNT composites is presented. The presence of functional groups effectively influenced the colloidal behavior of CNTs in the precursor epoxy resin and the hardener triethylenetetramine (TETA), which affected the synthesis process and eventually the interfacial interactions between the polymer matrix and the CNTs. The physical, thermal and electrical properties of the composites exhibited strong dependence on the nature of functionalization. At a 0.5 wt% CNTs loading, the enhancement in tensile strength was found to be 7.2, 11.2, 11.4 and 14.2 percent for raw CNTs, carboxylated CNTs, octadecyl amide functionalized CNTs and hydroxylated CNTs, respectively. Glass transition temperatures (T) also varied with the functionalization and composite prepared using hydroxylated CNTs showed the maximum enhancement of 34%.
摘要
本文介绍了碳纳米管（CNT）功能化对改变环氧-CNT复合材料性能的影响。官能团的存在有效地影响了碳纳米管在前体环氧树脂和固化剂三乙烯四胺（TETA）中的胶体行为，这影响了合成过程，并最终影响了聚合物基体与碳纳米管之间的界面相互作用。复合材料的物理、热和电性能强烈依赖于功能化的性质。在碳纳米管含量为0.5 wt%时，发现未处理的碳纳米管、羧基化碳纳米管、十八烷基酰胺功能化碳纳米管和羟基化碳纳米管的拉伸强度分别提高了7.2%、11.2%、11.4%和14.2%。玻璃化转变温度（T）也随功能化而变化，使用羟基化碳纳米管制备的复合材料显示出最大34%的提高。
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