Synthesis and tribological property study of oleic acid-modified copper sulfide nanoparticles
Synthesis and tribological property study of oleic acid-modified copper sulfide nanoparticles
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DOI：
10.1016/j.wear.2007.09.009
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发表时间：
2008-06-25
期刊：
影响因子：
5
通讯作者：
Zhu, Hong
中科院分区：
文献类型：
--
作者：
Kang, Xiaohong;Bin Wang;Zhu, Hong
在无水酒精-蒸馏水混合溶液中，采用表面改性技术制备了油酸修饰的硫化铜纳米颗粒。通过改变表面改性剂与硫化铜的摩尔比，制备了摩尔比为0.5:1、1:1、2:1、3:1的一系列纳米颗粒。采用FALEX-6型四球磨损试验机对制备的纳米颗粒作为油添加剂在液体石蜡中的减摩抗磨行为进行了评价，并用扫描电镜（SEM）对摩擦表面形貌进行了观察。结果表明，在浓度约为0.4wt时。当油酸与硫化铜的摩尔比达到2:1时，磨损疤痕直径（WSD）最小，抗磨性能最好；当油酸与硫化铜的摩尔比达到1:1时，摩擦系数最小，减摩性能最好。(C) 2007 Elsevier B.V.版权所有
Oleic acid-modified copper sulfide nanoparticles were prepared by means of a surface modification technique in absolute alcohol-distilled water mixed solution. Through varying the mole ratio of surface modifier to copper sulfide, a series of nanoparticles were prepared with the mole ratio of 0.5:1, 1:1, 2:1, 3:1. The friction-reduction and antiwear behaviors of the prepared nanoparticles as an oil additive in liquid paraffin were evaluated with FALEX-6 model four-ball wear tester, and the morphologies of the rubbed surfaces were evaluated with scanning electron microscope (SEM). The results showed that at the concentration of about 0.4wt.% when the mole ratio of oleic acid to copper sulfide was up to 2:1, the wear scar diameter (WSD) became the smallest, and the antiwear performance was best; when the mole ratio of oleic acid to copper sulfide was up to 1:1, the friction coefficient became the smallest, and the friction reducing performance was best. (C) 2007 Elsevier B.V. All rights reserved.