三乙烯四胺改性碳纳米管对环氧树脂力学性能的影响  

Influence of Modified Carbon Nanotubes With Triethyllene-Tetramine on Mechanical Properties of Epoxy Resin Composites

作　　者：王芳[1] 肖军[1] 李淑琴[1] 王经文[1] 

机构地区：[1]南京航空航天大学,南京210016

出　　处：《宇航材料工艺》2009年第3期34-36,40,共4页Aerospace Materials & Technology

摘　　要：采用三乙烯四胺(TETA)对多壁碳纳米管(MWNT)改性,红外光谱表明MWNT表面成功接枝氨基基团,拉曼光谱表明胺化过程并未改变MWNT本身的石墨结构。用胺化前后的MWNT与环氧树脂(EP)复合,研究了不同含量MWNT对复合材料力学性能的影响。结果表明胺化碳纳米管对EP有较好的增强增韧作用,添加量为0.75%(质量分数)时可以使复合材料的抗拉强度提高70%,冲击强度提高61%。复合材料断面场发射扫描电镜照片(FESEM)表明胺化MWNT在基体中分散性提高,并且与基体的相容性增强,提高了材料力学性能。Carbon nanotubes （MWNT） were treated that the amino group was grafted on the surface of MWNT with triethyllene-tetramine （TETA）. FTIR results showed and Raman showed that the functionalization had not affected the graphite structure of the MWNT. The effects of different MWNT contents on the mechanical properties of epoxy resin （EP） were studied. The results show that amino nanotube （TETA - MWNT） can improve the intensity and toughness of the nanocomposites. When the content of TETA - MWNT is 0.75wt%, the intensity strength is increased by 70% and the toughness strength is increased by 61%. FESEM show that the good dispersion and well compatibility of TETA - MWNT with EP matrix can result in the improved mechanical properties of the composites.

关 键 词：环氧树脂 碳纳米管 纳米复合材料 力学性能 

分 类 号：TQ465.1[化学工程—制药化工] TB383[一般工业技术—材料科学与工程]