水合肼还原法制备超细银粉的研究  

Preparation of Silver Powders by Reduction Method with Hydrazine

作　　者：兰尧中[1] 刘进[1] 李现强 周建国[3] 

机构地区：[1]云南大学材料科学系,云南昆明650091 [2]安阳二中,河南安阳455000 [3]河南师范大学,河南新乡453002

出　　处：《贵金属》2005年第4期22-26,共5页Precious Metals

基　　金：云南省人才培养项目资助(2002PY01)

摘　　要：以聚乙烯醇为分散剂,用水合肼(N2H4.H2O)还原法制备超细银粉。通过基本的物理化学计算,得到化学还原法制备超细Ag粉过程中有关物质的φ～pH关系数据,确定了反应的基本条件,为还原条件的控制提供了理论依据。并研究了分散剂PEG及还原剂水合肼的用量对银粉粒度及产率的影响。By using polyethylene glycol as disperse agent, Ag powders were prepared by the reduction method with hydrazine. Through the basic calculations, the relationship between φ and pH was established, which provided the theoretical basis for controlling the reduction process of Ag powders. The effects of quantity of disperser and reducer on the size of Ag powders and the production efficiency were also studied in the present paper.

关 键 词：金属材料 超细银粉 化学还原法 

分 类 号：TG146.32[一般工业技术—材料科学与工程]