Friction and wear behavior of thioether hydroxy vegetable oil

被引：86
作者：
Sharma, Brajendra K. [1 ,2 ]
Adhvaryu, A. [1 ,2 ]
Erhan, Sevim Z. [1 ]
机构：
[1] USDA ARS, Natl Ctr Agr Utilizat Res, Food & Ind Oil Unit, Peoria, IL 61604 USA
[2] Penn State Univ, Dept Chem Engn, University Pk, PA 16802 USA
来源：
TRIBOLOGY INTERNATIONAL | 2009年 / 42卷 / 02期
关键词：
Antiwear additive; Ball-on-disk; Epoxidized vegetable oil; Four-ball; Lubricant additive; Sulfur; DIFFERENTIAL SCANNING CALORIMETRY; BOUNDARY LUBRICATION COEFFICIENT; LOAD-CARRYING PROPERTIES; DIBENZYL DISULFIDE; CHEMICAL STRUCTURE; SULPHUR COMPOUNDS; FATTY ESTERS; ADSORPTION; OXIDATION; MECHANISM;
D O I：
10.1016/j.triboint.2008.07.004
中图分类号：
TH [机械、仪表工业];
学科分类号：
0802 ;
摘要：
This work describes the tribochemical evaluation of vegetable oil based antiwear additive obtained through chemical modi. cation. The Sulfur was incorporated using a chemical reaction of epoxidized vegetable oil and common thiols, resulting in formation of a hydroxy thioether derivative of vegetable oils. The synthesis retains the vegetable oil structure, eliminates poly-unsaturation in the molecule, and adds polar functional groups that significantly improve adsorption on metal surfaces. These additives are obtained by chemical modi. cation of oils originated from natural resources. The tribochemical behavior of sulfur incorporated vegetable oil was studied by measuring friction coefficient using ball-on-disk configuration and wear scar diameter using four-ball configuration. Comparative tests with commercial antiwear additives demonstrate the effectiveness of these derivatives. The derivatives were found useful as agriculturally based antiwear additives for lubricant applications. (C) 2008 Elsevier Ltd. All rights reserved.
引用
收藏
页码：353 / 358
页数：6
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