Antiwear properties of phosphorous-containing compounds in vegetable oils

被引：24

作者：

Minami, I ^{[1
]}

Mitsumune, S ^{[1
]}

机构：

[1] Kochi Univ Technol, Tosayamada 7828502, Japan

来源：

TRIBOLOGY LETTERS | 2002年 / 13卷 / 02期

关键词：

vegetable oils; antiwear additives; peroxides; oxidation stability;

D O I：

10.1023/A:1020152615786

中图分类号：

TQ [化学工业];

学科分类号：

0817 ;

摘要：

Antiwear properties of vegetable oils were investigated under boundary lubrication conditions using the four-ball wear test (ADTM D 4172). Additive-free vegetable oils exhibit similar antiwear properties, which are superior to those of additive-free mineral oils. Phosphorus-containing compounds such as zinc bis(dialkyldithiophosphate) and dialkyl phosphonates improve the antiwear properties of vegetable oils. The effect of the additives on wear reduction was found to depend on the peroxide value of the base oil. It is considered that peroxides decompose the antiwear additives to less active forms. The formation of peroxides by the autooxidation of vegetable oils was observed even at room temperature. Sunflower oil exhibits good oxidation stability, which may promise success in various applications.

引用

页码：95 / 101

页数：7

共 27 条

[11] The action of lubricants under extreme pressure conditions in a modified four-ball tester [J].