摘要
气流粉碎是近年来发展起来的一种新型微纳米粉体制备技术,然而采用该方法制备的粉体在一定程度上会自发团聚形成团聚体。将静电分散与气流粉碎相结合,研究了不同粒径的原始粉料经气流粉碎/静电分散方法处理后的粒径分布以及粒径随时间的变化关系,得到了气流粉碎/静电分散中荷电电压对所制备粉体粒径分布的影响规律和颗粒荷电分散的时效性,结果表明荷电电压越高粉体分散性越好,经J/E处理后粉体粒径随时间变化关系满足d=Aet/B+d0。
Jet-milling was an innovational technology to prepare miro-nanopowder developed in recent two decades,while the powder which prepared by this method will form the agglomerations spontaneously to a certain extent though it has a lot of advantages.In this paper,we have developed a new method to prepare micro-nanopowder with a combination of jet-milling and electrostatic dispersion techniques.Particle size distribution of powders with different initial size treated by J/E method were studied,and the size of powders vary with the time were discussed as well after J/E treatment.The research reveals the influence of charging voltage on the size distribution of the powder thus prepared and the time-effectiveness of J/E method.The results of experiments indicated preliminarily that the disperstiveness of powder treated by J/E method was proportional to the charging voltage,and the size of powder which varies with time satisfies the relationship of d=Aet/B＋d0 after J/E treatment.
出处
《功能材料》
EI
CAS
CSCD
北大核心
2013年第13期1928-1931,共4页
Journal of Functional Materials
基金
国家自然科学基金资助项目(51074129)
西北工业大学研究生创业种子基金资助项目(Z2012151)
关键词
气流粉碎
静电分散
粒径
时效性
CaCO3粉体
jet milling
electrostatic dispersion
CaCO3 powder
particle size
time-effectiveness
