摘要
综合了当前纳米粉体的团聚与分散研究成果,根据清洁表面、大气环境纳米粉体表面结构特征,分析了纳米粉体团聚原因与动力,阐述了表面结构-环境-团聚与分散的依赖关系。对干态环境下纳米粉体不同分散技术的分散机理和有效性进行了分析评价,指出静电排斥稳定机理、空间位阻稳定机理是既适合液态环境,也适合干态环境的分散理论。并指出了纳米分散技术研究应用的方向。
In this paper, new research achievements in agglomeration and dispersion mechanisms of nano-particles are summarized. Agglomeration cause and motivity of nano-particles are analyzed on the basis of the structure characteristic of clean surface and surface in air. The interactional relations between surface structure, environment and dispersion are explained, The mechanism and validity of dispersion technologies in air are discussed and evaluated. The results indicate that the principles of steric stabilization and static stabilization on colloid are fit for nano-particales dispersion stabilization in gas atmosphere. Some directions for research and application to the dispersion techniques of nanoparticles are given.
出处
《材料导报》
EI
CAS
CSCD
北大核心
2007年第7期90-92,100,共4页
Materials Reports
基金
湖北省教育厅基金项目(D200525004
2001A6905)
关键词
纳米颗粒
团聚
分散技术
机理
干态
nanoparticles, agglomeration, dispersion technique, mechanism, dry state
