Effects of Dopamine-doped Carbon Nanotubes on the Interfacial Properties of Aramid Fiber
LI Xiaoyu1, LI Cuiyu1,2, SU Rui1
1 School of Textile Science and Engineering, Tiangong University, Tianjin 300387, China 2 Key Laboratory of Advanced Textile Composites, Ministry of Education, Tiangong University, Tianjin 300387, China
Abstract: In order to improve the surface properties of aramid fiber and enhance the interfacial bonding strength between fiber and resin matrix, dopamine-doped carbon nanotubes were used to modify the aramid fiber, and the surface morphology, FTIR test, single fiber strength test, fiber surface contact angle test and fiber pull out test were carried out before and after modification. The results showed that the dopamine-doped carbon nanotube (CNT) modified fiber surface coating was improved in firmness. Compared with the unmodified fiber, the surface active groups of the fiber increased, and when the carbon nanotube concentration was 0.03%, the tensile breaking strength of the modified fiber increased 38.34%, the contact angle decreased, the surface free energy increased 49.5%, the interface shear strength increased 20.2%, and the interface performance between the fiber and the resin matrix was greatly improved.
李晓雨, 李翠玉, 苏瑞. 多巴胺掺杂碳纳米管对芳纶纤维界面性能的影响[J]. 材料导报, 2020, 34(Z2): 562-566.
LI Xiaoyu, LI Cuiyu, SU Rui. Effects of Dopamine-doped Carbon Nanotubes on the Interfacial Properties of Aramid Fiber. Materials Reports, 2020, 34(Z2): 562-566.
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