片状银粉的制备及性能表征OA
Preparation and Performance Characterization of Flake Silver Powder
以硝酸银、氨水与乙二胺、水合肼、吐温-80分别为原料、络合剂、还原剂、分散剂,制备高球形度银粉(前驱体);再以乙二醇与水的混合液为球磨助剂,通过机械球磨法制备片状银粉.使用激光粒度分布仪、扫描电子显微镜、振实密度仪、比表面积分析仪、X-射线衍射仪和三辊研磨机等,对不同球磨时间下银粉的微观形貌、平均粒径、比表面积、粒径分布、振实密度和导电性等进行表征与分析.结果表明,经球磨机研磨 14 h,得到平均粒径为 3.79 μm、振实密度为 5.05 g/cm3、粒度分布窄、分散性好且导电性优良的片状银粉.该片状银粉可用于制备导电浆料.
High sphericity silver powder was prepared using silver nitrate,ammonia water,ethylenediamine,hydrazine hydrate,and Tween-80 as the raw material,complexing agent,reducing agent,and dispersant,respectively.The flake silver powder was produced through mechanical ball milling,using a mixture of ethylene glycol and water as the milling aid.The micro-morphology,average particle size,specific surface area,particle size distribution,tap density,and conductivity of the silver powder milled for different durations were characterized and analyzed using a laser particle size analyzer,scanning electron microscope(SEM),tap density meter,specific surface area analyzer,three-roll mill,and X-ray diffractometer(XRD).The results showed that after 14 hours of ball milling,flake silver powder with an average particle size of 3.79 μm,tap density of 5.05 g/cm³,narrow particle size distribution,good dispersibility,and excellent conductivity was obtained.This flake silver powder can be used for the preparation of conductive pastes.
黄开涛;何力军;哈敏;胡楠;王军
宁夏大学 材料与新能源学院,宁夏 银川 750021||中色(宁夏)东方集团有限公司 稀有金属特种材料国家重点实验室,宁夏 石嘴山 753000宁夏大学 材料与新能源学院,宁夏 银川 750021中色(宁夏)东方集团有限公司 稀有金属特种材料国家重点实验室,宁夏 石嘴山 753000中色(宁夏)东方集团有限公司 稀有金属特种材料国家重点实验室,宁夏 石嘴山 753000中色(宁夏)东方集团有限公司 稀有金属特种材料国家重点实验室,宁夏 石嘴山 753000
矿业与冶金
振动球磨球磨时间比表面积片状银粉导电银浆
vibration ball millingball milling timespecific surface areaflake silver powderconductive silver paste
《宁夏大学学报（自然科学版中英文）》 2026 (3)
283-288,6
宁夏自然科学基金资助项目(2022AAC03069)
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