The Effect of Lubricant Viscosity and Composition on Engine Friction and Bearing Wear. II
The Effect of Lubricant Viscosity and Composition on Engine Friction and Bearing Wear. II
复制标题
润滑油粘度和成分对发动机摩擦和轴承磨损的影响。
DOI：
--
复制
发表时间：
1961
期刊：
影响因子：
--
通讯作者：
E. Okrent
中科院分区：
文献类型：
--
作者：
E. Okrent
在早期的一篇论文中，研究人员发现含有高分子量聚合物的矿物油比相同粘度的直接矿物油具有更好的润滑特性（在V-8汽车发动机中，摩擦和磨损更低）。本文考虑了聚合物类型、分子量和浓度的影响。通常，摩擦和磨损随着聚合物浓度的增加而减少，趋于平稳，达到一个“平台”，这是给定聚合物的一个特征。这一水平取决于聚合物的类型和分子量，用最低分子量的聚合物获得最好的效果。聚合物/油共混物的行为对极性表面活性剂的存在也很敏感。由此得出结论，油的体积性质（如粘弹性）和表面效应是聚合物改性油的优势的重要原因。由ASLE发动机润滑技术委员会贡献，并在美国润滑学会年会上提出。
In an earlier paper it was shown that mineral oils containing high molecular weight polymer would give better lubrication characteristics (lower friction and lower wear in a V-8 automotive engine) than straight mineral oils of the same viscosity. In this paper, the effects of polymer type, molecular weight and concentration are considered. Generally, friction and wear decrease with polymer concentration, leveling off to a “plateau” which is a characteristic of the given polymer. The level depends on both polymer type and molecular weight, the best results being obtained with the lowest molecular weight polymer. The behavior of polymer/oil blends is also sensitive to the presence of polar surfactants. It is concluded that both the bulk properties of oils, such as viscoelasticity, and surface effects are important in accounting for the advantage of polymer-modified oils. Contributed by the ASLE Technical Committee on Engine Lubrication and presented at the Annual Meeting of the American Society of Lubricati...