摘要
通过强碱球磨方法对多壁碳纳米管(MWCNTs)进行了改性处理,并对其化学结构和微观形态进行了分析。采用溶液共混法制备了聚氨酯(PUR)/MWCNTs复合材料。利用扫描电子显微镜、傅立叶变换红外光谱仪对其进行了表征,探讨了MWCNTs对PUR/MWCNTs复合材料力学性能、热稳定性以及电导率的影响。结果表明,MWC-NTs经强碱球磨处理后,其表面引入了羟基活性基团,长度也明显变短;在复合材料中,MWCNTs以较强氢键与大分子进行连接,复合材料的力学性能、热稳定性能和电导率都有明显的提高。
Muhi-wall carbon nanotubes（MWCNTs） were milled with strong alkali, and their structures and micro-morphology were further investigated. Polyurethane/alkali-milled carbon nanotube composites were prepared by solution mixing and the composites were characterized by FTIR and SEM. The effect of carbon nanotubes on the mechanical properties, thermal stabilization and electric properties of the composites were analyzed. It indicated that the hydroxylic groups were added onto the MWCNTs and the length of MWCNTs were shortened after MWCNTs milling with strong alkali. The MWCNTs were hydrogen bonded onto the polyurethane matrix. Consequently, the mechanical, thermal and electric properties of the composites were all improved.
出处
《工程塑料应用》
CAS
CSCD
北大核心
2011年第1期10-13,共4页
Engineering Plastics Application
基金
上海高校选拔培养优秀青年教师科研专项基金项目(SYQ306005)
上海市重点学科建设项目(P1701)
关键词
聚氨酯
碳纳米管
复合材料
强碱球磨处理
polyurethane, carbon nanotubes, composites, milled with strong alkali
