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	表面活性剂对超细镍粉分散性及形貌的影响(英文)
	黄国勇 ; 徐盛明 ; 李林艳 ; 王学军 ; Guo-yong HUANG ; Sheng-ming XU ; Lin-yan LI ; Xue-jun WANG
	2016-03-30 ; 2016-03-30
关键词	镍粉 表面活性剂 分散 形貌 合成 nickel powder surfactant dispersion morphology synthesis TF123
其他题名	Effect of surfactants on dispersion property and morphology of nano-sized nickel powders
中文摘要	采用液相化学还原法制备超细镍粉时,颗粒容易团聚,需加入合适且适量的表面活性剂进行改进。通过SEM、XRD、激光粒度分析仪等表征手段,考察表面活性剂种类及用量对超细镍粉分散性的影响,并研究表面活性剂相对分子质量大小对颗粒形貌的影响。结果表明:非离子型表面活性剂PEG-600和吐温(Tween-40)能明显地改善超细镍粉的团聚现象,且其相对镍理论产量的最佳用量分别为100 mg/g和150 mg/g;并发现随着Tween相对分子质量的增大,镍粉颗粒由光滑的球形变成不规则形状。; Fine face-centered cubic(FCC) nickel powders were synthesized by liquid phase reduction with different surfactants. The products were investigated by scanning electron microscopy(SEM), laser particle size analyzer and X-ray powder diffraction(XRD). The results indicate that the type, dosage and relative molecular mass of surfactants significantly impact the purity, dispersion property, particle size, size distribution and morphology of the products. The nonionic surfactants poly ethylene glycol(PEG) and polyethylene glycol sorbitan monostearate(Tween) showed better dispersing ability in the reaction system than the others. The optimal mass ratios of surfactant to Ni are 100 mg/g and 150 mg/g for PEG-600 and Tween-40, respectively. The products obtained in the optimal conditions have ideal morphology and narrow size distribution. Moreover, study on the relative molecular mass effect revealed that with the increase of the relative molecular mass of Tween, the morphology of nickel powders changed from sphere to spiny ball.
语种	英语 ; 英语
内容类型	期刊论文
源URL	[http://ir.lib.tsinghua.edu.cn/ir/item.do?handle=123456789/143915]
专题	清华大学
推荐引用方式 GB/T 7714	黄国勇,徐盛明,李林艳,等. 表面活性剂对超细镍粉分散性及形貌的影响(英文)[J],2016, 2016.
APA	黄国勇.,徐盛明.,李林艳.,王学军.,Guo-yong HUANG.,...&Xue-jun WANG.(2016).表面活性剂对超细镍粉分散性及形貌的影响(英文)..
MLA	黄国勇,et al."表面活性剂对超细镍粉分散性及形貌的影响(英文)".(2016).

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