Thermal Stability of Carbon Nanotubes in Atmosphere

摘要：

The experimental observation explicates that carbon nanotubes (CNT) oxidization appears at high temperature in atmosphere and the oxidization leads the structure breakage of CNTs and weight loss of the CNTs. The oxidization of CNTs is not acute and rapid as combustion. There is not critical temperature when the oxidization of CNTs appears. Theoretical analysis shows that the oxidization of CNTs does not release tremendous heat quantity, chain reaction does not appear. The oxidization of CNTs is dominated by the interaction energy between oxygen molecules and carbon atoms of CNTs. Because the kinetic energy of oxygen molecules is not same at a certain temperature, there is not critical temperature when the oxidization of CNTs appears. The reason, which the oxidization of CNTs hardly appears below 673K, is that the structure instability of CNTs increases with the temperature rising.

关键词： carbon nanotube thermal stability oxidization

作者: TIAN Changhui REN Huafeng GENG Daotian TIAN Xiaoxia

作者单位: The Science Institute, Air Force Engineering University, Xian, 710051, China

会议类型: 国际会议

会议名称: 第七届国际测试技术研讨会

会议地点: 北京

会议语种:英文

在线出版日期: 2007-08-05（万方平台首次上网日期，不代表论文的发表时间）