Tribological performance and mechanism of PMMA/SiO2 hybrid nanocomposite as lubricating oil additives

被引：0

作者：

Li, Chun-Feng ^{[1
]}

Chen, Bo-Shui ^{[1
]}

Luo, Xin-Min ^{[1
]}

Hou, Bin ^{[2
]}

机构：

[1] Department of Oil Application and Management, Logistical Engineering University, Chongqing 400016, China

[2] Navy Logistic Technology and Equipment Institute of PLA, Beijing 100072, China

来源：

Mocaxue Xuebao/Tribology | 2008年 / 28卷 / 02期

关键词：

Additives - Emulsion polymerization - Lubricating oils - Nanocomposites - Polymethyl methacrylates - Silica - Transmission electron microscopy - Tribology;

D O I：

暂无

中图分类号：

学科分类号：

摘要：

Polymethyl methacrylate/surface organically modified silica (PMMA/SiO2) hybrid nanocomposite was synthesized through 'one-step' soap-free emulsion polymerization. The resulting composite with core-shell structure was characterized by TEM. PMMA/SiO2 was well-dispersed spherical-shaped nano-particle with about 60 nm in diameter. The effect of PMMA/SiO2 hybrid nanocomposite as additives on the anti-wear and friction-reducing properties of AN 10 oil was examined using a four-ball friction and wear tester. PMMA/SiO2 hybrid nanocomposite was effective in improving steel-to-steel load-carrying capacity, anti-wear ability and in reducing friction coefficient of based oil, and it effectively enhanced extreme-pressure capacity of the based oil. Si element could not be detected on the worn steel surface under low load, when elastic roll of PMMA/SiO2 and formed films of polymer matrix on worn steel surfaces enhanced anti-wear and friction-reducing properties. A large amount of exposed high-active nano-SiO2 melted at middle and extreme loads and they deposited on the worn steel surface, and so they improved tribological performance of based oils.

引用

页码：133 / 138