Xiaoxiang Zhang, Jianxin He, Peng Wei, Xin Huang, Huimin Tian, Min Chen
Zhongyuan University of Technology School of Textiles, Zhengzhou 450007, China.
J Nanosci Nanotechnol. 2020 Mar 1;20(3):1977-1982. doi: 10.1166/jnn.2020.17347.
Nylon 6,6 composite fiber containing grafted graphene (nylon 6,6-g-graphene) was prepared by nylon and graphene grafted with acyl chloride (graphene-COCl) through extrusion reaction. Graphene-COCl was prepared through acid-treated reacting, graphene with thionyl chloride functional group. The chemical structure of nylon 6,6-g-graphene obtained using reactive extrusion technique was characterized using Fourier transform infrared spectrometer. It was found that this kind of composite fiber has the characteristics of less amount of graphene and excellent mechanical properties and has certain application prospects. Nylon 6,6-g-graphene dispersed evenly in the Nylon composite. But pristine graphene exhibited aggregate structure when composite was produced by pristine graphene through reactive extrusion. The composite reinforcement was increased obviously with the increase content of grafted graphene. After examined, the nylon/nylon 6,6-g-graphene with a certain content grafted graphene composite exhibited high level of reinforcement, and mechanical properties were improved.
通过尼龙与经酰氯（石墨烯 - COCl）接枝的石墨烯经挤出反应制备了含接枝石墨烯的尼龙6,6复合纤维（尼龙6,6 - g - 石墨烯）。石墨烯 - COCl是通过对石墨烯进行酸处理并与亚硫酰氯官能团反应制备的。使用傅里叶变换红外光谱仪对采用反应挤出技术获得的尼龙6,6 - g - 石墨烯的化学结构进行了表征。结果发现，这种复合纤维具有石墨烯用量少且机械性能优异的特点，具有一定的应用前景。尼龙6,6 - g - 石墨烯均匀分散在尼龙复合材料中。但是当通过反应挤出由原始石墨烯制备复合材料时，原始石墨烯呈现出聚集结构。随着接枝石墨烯含量的增加，复合增强效果明显提高。经检测，含有一定含量接枝石墨烯的尼龙/尼龙6,6 - g - 石墨烯复合材料表现出高水平的增强效果，并且机械性能得到了改善。
