摘要
本文采用浓酸(浓硫酸/浓硝酸)氧化法对纳米碳纤维进行表面处理,在水热和超声分散条件下,制备纳米碳纤维/环氧树脂复合材料。X射线光电子能谱分析表明,酸化处理在纳米碳纤维表面引入了羟基和羧基等能参与环氧树脂固化反应的官能团。流变试验结果表明,酸化处理在一定程度上提高了复合材料流体的流动性。断裂韧性测试结果和扫描电子显微镜(SEM)分析也显示了酸化处理能有效改善纤维与树脂的界面结合状况,提高复合材料的断裂韧性。
Concentrated acidification （vitriol/nitric acid） method was applied to the surface treatment of carbon nanofibers （CNFs）. The carbon nanofibers/epoxy resin composites were fabricated under hydrothermal and ultrasonic conditions. X-ray photoelectron spectroscopy analysis showed that hydroxyl and carboxyl functional groups, which could participate in the cure reaction of epoxy resin, were introduced into the surface of carbon nanofibers after acidification treatment. Rheology properties tests indicated that the fluidity of composite fluid was improved. Results of fracture toughness tests and scanning electron microscope （SEM） exhibited that the interface combination between the carbon nanofibers and the resin was effectively improved and the fracture toughness of composites was remarkably increased after acidification treatment.
出处
《玻璃钢／复合材料》
CAS
CSCD
2009年第1期23-27,共5页
Fiber Reinforced Plastics/Composites
基金
湖北省自然科学基金(2005ABA010)
关键词
纳米碳纤维
环氧树脂
酸化处理
流变性能
断裂韧性
carbon nanofibers
epoxy resin
acidification treatment
rheology
fracture toughness
