| 纳米银粉表面包覆硅烷偶联剂改性研究 |
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| 引用本文： | 李先学,沈高扬,杨磊,吴丹丹,许丽梅,陈义祥.纳米银粉表面包覆硅烷偶联剂改性研究[J].稀有金属,2011,35(4). |
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| 作者姓名： | 李先学 沈高扬 杨磊 吴丹丹 许丽梅 陈义祥 |
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| 作者单位： | 1. 莆田学院环境与生命科学系,福建莆田,351100
2. 中国科学院理化技术研究所,北京,100190 |
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| 基金项目： | 福建省自然科学基金项目(2009J05030); 福建省高校服务海西建设重点项目(2009HX11); 莆田学院大学生创新性实验计划项目(2009)资助 |
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| 摘 要： | 为了减少纳米银粉的团聚,增强纳米银粉在空气中的稳定性,提高其与有机材料的亲合性,改善纳米银粉在有机基体中的均匀分散,需预先对纳米银粉进行表面改性.采用硅烷偶联剂KH-560对纳米银粉进行表面改性,通过测定活化指数,研究了KH-560用量与纳米银粉改性效果之间关系,并借助X射线衍射仪(XRD)、红外光谱(FTIR)、紫外可见分光光度计UV-vis)等测试手段.对改性后纳米银粉的结构和性能进行了表征.XRD结果表明,纳米银粉为面心立方晶系,晶粒尺寸约为20 nm;通过活化指数的测量,KH-560最佳用量为5%,改性后纳米银粉疏水性增强,活化指数达0.8;红外光谱表明,KH-560以化学键合的方式结合在纳米银粉的表面,并形成了有机包覆层;UV-vis结果表明,改性后的纳米银粉在氯仿中具有较好的分散稳定性.
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| 关 键 词： | 纳米银粉 硅烷偶联剂 改性 KH-560 |
Surface Modification of Silver Nano-Powders with Silane Coupling Agent |
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| Li Xianxue,Shen Gaoyang,Yang Lei,Wu Dandan,Xu Limei,Chen Yixiang.Surface Modification of Silver Nano-Powders with Silane Coupling Agent[J].Chinese Journal of Rare Metals,2011,35(4). |
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| Authors: | Li Xianxue Shen Gaoyang Yang Lei Wu Dandan Xu Limei Chen Yixiang |
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| Affiliation: | Li Xianxue1,Shen Gaoyang1,Yang Lei1,Wu Dandan1,Xu Limei1,Chen Yixiang2 (1.Department of Environment & Life Science,Putian University,Putian 351100,China,2.Technical Institute of Physics and Chemistry,Chinese Academy of Sciences,Beijing 100190,China) |
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| Abstract: | In order to reduce agglomeration of the silver nano-powders,increase their dispersing stability in air and improve their compatibility with other organic materials,its surface modification should be pretreated.The surface of silver nano-powders was modified with silane coupling agent KH-560.The relationships between the usage of KH-560 and silver nano-powders were also studied by measuring active index.The modified silver powders were characterized by X-ray diffraction(XRD),Fourier transform infrared spectr... |
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| Keywords: | nano-silver powders silane coupling agent modification KH-560 |
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