纳米粉体的团聚特性和提高分散性的措施  

Agglomeration Property of Nano Powder and Measures to Enhance The Dispersibility

作　　者：周学永[1] 李彩文[1] 王玲香[1] 

机构地区：[1]天津理工大学生物与化工学院,天津300191

出　　处：《硫磷设计与粉体工程》2006年第1期17-20,共4页Sulphur Phosphorus & Bulk Materials Handling Related Engineering

基　　金：天津市自然科学基金资助项目(05YFJMJC05100)。

摘　　要：从理论上探讨了粉体比表面积与表面自由能的关系,分析了纳米颗粒在悬浮液中的相互作用,提出了增大颗粒表面电位的绝对值、在颗粒表面形成聚合物吸附层、增强颗粒表面对分散介质的润湿性等措施,以提高纳米颗粒的分散性。The relationship between the powder’s specific surface area and surface free energy is discussed from a theoretical perspective.The interaction between nano particles in the suspension liquid is analyzed.Measures are proposed to enhance the dispersibility of nano particles,which include increasing the absolute value of the particle’s surface potential,forming a polymer adsorption layer on the particle’s surface,increasing the water affinity of the particle’s surface for the dispersion medium,etc.

关 键 词：纳米 粉体 团聚性 分散性 

分 类 号：TB383.1[一般工业技术—材料科学与工程]