Impact of polyurea structure on grease properties

被引：36

作者：

Liu, L. ^{[1
]}

Sun, H. W. ^{[1
]}

机构：

[1] Res Inst Petr Proc, Beijing 100083, Peoples R China

来源：

LUBRICATION SCIENCE | 2010年 / 22卷 / 09期

关键词：

polytirea; lubricating grease; property; mechanism;

D O I：

10.1002/ls.140

中图分类号：

TQ [化学工业];

学科分类号：

0817 ;

摘要：

The thickener structure of polyurea grease has a crucial effect on its properties Therefore, it is very important to study the relationship between a thickener structure and physical and performance properties In this study. polyurea greases were synthesised, having a different number of urea groups in per polyurea thickener molecule. Properties such as dropping point. penetration, oil separation, shear stability and four-hall wear and extreme pressure (EP) were evaluated The result shows that properties of polyurea grease vary with the number of urea group per polyurea molecule. Based on molecular theory, the mechanisms explaining these effects are briefly discussed. Copyright (C) 2010 John Wiley & Sons. Ltd.

引用

页码：405 / 413

页数：9

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