碳纳米管的分散方法与分散机理  

Dispersion Methods and Dispersion Mechanism of Carbon Nanotubes

作　　者：武玺旺[1] 肖建中[1] 夏风[1] 胡永刚[1] 彭周[1] 

机构地区：[1]华中科技大学材料学院模具国家重点实验室,武汉430074

出　　处：《材料导报》2011年第9期16-19,共4页Materials Reports

基　　金：国家高技术研究发展计划(863计划)课题(2006AA03Z0443)

摘　　要：要发挥碳纳米管的优异性能,如何均匀分散碳纳米管是首先要解决的关键性问题。通过研究碳纳米管的团聚体形态,看出碳纳米管团聚体为一维纳米线团聚态,比普通颗粒粉体的零维团聚态更复杂。碳纳米管分散方法大体上分为物理法与化学法两大类,对比研究碳纳米管的各种分散方法,分析碳纳米管的分散机理,提出了均匀分散碳纳米管要满足3个必要条件:打散碳纳米管团聚体、剪断长碳纳米管、保持碳纳米管分散状态。剪切挤出分散法可以较好地满足这3个条件,制备出均匀分散的碳纳米管复合粉体。How to disperse carbon nanotubes（CNTs） homogeneously is a crucial problem, to display the excellent properties and make widespread use of CNTs. Agglomerates of CNTs witch are made up of cross-linked one-dimension nano-wire, are more complex than normal powder agglomerates. By comparing some kinds of dispersion methods, dispersion mechanism of CNTs are discussed. Then, three essential conditions are proposed to disperse CNTs.. cutting short CNTs, breaking up agglomerates of CNTs and holding the dispersion state. Shear extrude method can ideally satisfy those essential conditions.

关 键 词：碳纳米管 团聚体 分散方法 分散机理 

分 类 号：TB383[一般工业技术—材料科学与工程]