粉末冶金技术2026，Vol.44Issue(3)：321-328,8.DOI:10.19591/j.cnki.cn11-1974/tf.2025090010
反应温度、反应时间和搅拌速率对纳米铜粉尺寸和分散性的影响
Effects of reaction temperature,reaction time,and stirring rate on particle size and dispersion of nano-copper powders
摘要
Abstract
To solve the problems of difficult particle size control and easy agglomeration for the nano-copper powders prepared by liquid-phase reduction,the normal method(NMM),complex reduction method(CRM),and alcohol solvent reduction method(ARM)were compared,and the effects of reaction temperature,reaction time,and stirring rate on the morphology,particle size,and dispersion of copper powders were systematically investigated.The results show that the alcohol solvent method and complex method are significantly superior to the normal method in regulating particle size distribution and improving dispersion.Especially,the alcohol solvent method,using glycerol as both the solvent and the reducing agent,successfully prepares the spherical nano-copper powders with average particle size of about 200 nm with good dispersion,due to a slow rate of restoration and excellent surface modification capabilities.The optimal process parameters(reaction temperature,reaction time,and stirring rate)were clarified for the three methods,which is 80℃,90 min,and 400 r·min-1 for NMM(the prepared copper powders with particle size of about 300 nm),90℃,90 min,and 300 r·min-1 for CRM(the prepared copper powders with particle size of about 250 nm),and 160℃,120 min,and 300 r·min-1 for ARM(the prepared copper powders with particle size of about 200 nm).关键词
纳米铜粉/液相还原法/粒径控制/分散性/工艺优化Key words
nano-copper powder/liquid-phase reduction method/particle size control/dispersibility/process optimization分类
通用工业技术引用本文复制引用
吕俊杰,张鹏,章林,曲选辉..反应温度、反应时间和搅拌速率对纳米铜粉尺寸和分散性的影响[J].粉末冶金技术,2026,44(3):321-328,8.基金项目
国家重点研发计划资助项目(2023YFB3812101) （2023YFB3812101）
