高振实密度超细银粉的研制  

Study of the preparation of ultrafine silver powders of high tap density

作　　者：周宇松[1] 曹国洲[2] 逯庆国[1] 侯小宝 龚朝辉[1] 郭红燕[1] 吴敏[1] 

机构地区：[1]中国兵器科学研究院宁波分院,浙江宁波315103 [2]宁波出入境检验检疫局,浙江宁波315001 [3]宁波晶鑫电子材料有限公司,浙江宁波315800

出　　处：《兵器材料科学与工程》2007年第5期22-25,共4页Ordnance Material Science and Engineering

基　　金：宁波市科研攻关项目(2005B100033)

摘　　要：采用液相化学还原法,通过正交试验优化得到高振实密度超细银粉的制备工艺;制备的超细银粉为球形、表面光洁、无团聚,d90、d50、d10与平均粒径d分别为1.85、0.79、0.34、1.11μm,振实密度高达4.5g/cm3。试验结果表明,在银粉的还原生成反应中,溶剂去离子水用量与分散剂用量是其中两个主要的影响振实密度的因素。A preparation method of ultraiine silver powders of high tap density is optimized by orthogonal experiments of chemical reduction method. The d50,d50,d10 and mean diameter of smooth fine globular silver powders with excellent dispersibility is 1.85,0.79,0.34 and 1.11μm,repectively. The average tap density of silver powders is up to 4.5 g/cm^3 . The two main factors that may influence the tap density of silver powders are the dosage of deionised water and dispersant in the chemical reduction reactions.

关 键 词：银 超细粉体 振实密度 正交试验 化学还原 

分 类 号：TB44[一般工业技术] TM241[一般工业技术—材料科学与工程]