| 一维银线制备及其在导电胶中的应用 |
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| 引用本文： | 秦峻,堵永国,汪晓,张为军,刘阳. 一维银线制备及其在导电胶中的应用[J]. 贵金属, 2012, 33(1): 10-15,20 |
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| 作者姓名： | 秦峻 堵永国 汪晓 张为军 刘阳 |
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| 作者单位： | 1. 国防科技大学航天与材料工程学院,长沙,410073
2. 湖南有色中央研究院有限公司,长沙,410073 |
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| 摘 要： | 用不锈钢辅助醇热法高浓度、大规模制得低长径比(约为10～20)的一维银线,AgNO3浓度可达0.65 mol/L;该一维银线可作为导电胶的导电填料使用;一定范围内降低AgNO3浓度生成的一维银线其长度几乎保持不变,但平均直径略有减小;采用反应活性较低的不锈钢,提高初始反应温度对一维银线的形成有不利的影响。一维银线经球磨可制得类似带状的银粉;采用带状银粉制备的导电胶体积电阻率较一维银线更低,渗流阈值可以降至20%(质量分数)。
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| 关 键 词： | 金属材料 一维银线 醇热法 导电胶 带状银粉 |
Preparation and Application of 1D Silver Wires for Conductive Adhesives |
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| QIN JUN , DU Yongguo , WANG Xiao , ZHANG Weijun , LIU Yang. Preparation and Application of 1D Silver Wires for Conductive Adhesives[J]. Precious Metals, 2012, 33(1): 10-15,20 |
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| Authors: | QIN JUN DU Yongguo WANG Xiao ZHANG Weijun LIU Yang |
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| Affiliation: | 1.College of Aerospace and Materials Engineering,National University of Defense Technology,Changsha 410073,China; 2.Hunan Non-ferrous Center Academe Co.Ltd.,Changsha 410200,China) |
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| Abstract: | The a stainless steel-assisted polyol method has been proposed for high-concentration and large-scale preparation of 1D silver wires with low aspect ratios(10~20) at high AgNO3 concentrations of up to 0.65 mol/L.The 1D silver wires when used as conductive filler in conductive adhesives are easy to pass through screen printing forme.The average diameter of 1D silver wires increases somewhat with the concentration of AgNO3 while the length of 1D silver wires almost remains unchanged.Silver belts were prepared from 1D silver wires by a ball-milling process.The bulk resistivity and percolation threshold of conductive adhesives with silver belts as conductive filler are lower than 1D silver wires in the same filler content and its percolation threshold can be lower than 20wt%. |
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| Keywords: | metal material 1D silver wires polyol method conductive adhesives silver belts |
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