用于导电油墨的银包覆铜微粉工艺研究

Study on the Technology of Micro Silver-coated Copper Powders in Conductive Ink

在乙二醇体系中采用葡萄糖预还原法制备微米级铜粉,由直接置换法制备银包覆铜型微粉。通过导电性实验讨论不同条件下粉体的电阻值变化,确定了制备银包覆铜型微粉的最佳工艺条件。

The micro size of copper powders were prepared by pre-reduction method using glucose in the ethylene glycol system,and the micro silver type of copper-coated powders were directly made through substitution reaction method.By means of the laboratory experiment on the conductivity,the varieties of resistance value was discussed on the powders at different conditions.Therefore the optimum technology condition is confirmed to prepare the micro silver-coated copper powders.