表面修饰纳米SiO2的抗磨减磨性能研究  

Study on Anti-wear and Reduce Friction Performance of Surface Modified Nano-SiO2

作　　者：郭洪娜[1] 郑少华[1] 马士玉[1] 丁海洋[1] 

机构地区：[1]济南大学材料科学与工程学院,山东济南250022

出　　处：《纳米科技》2009年第2期21-24,共4页

基　　金：基金项目：国家自然科学基金项目（50572034）

摘　　要：以γ-甲基丙烯酰氧基丙基三甲氧基硅烷（硅烷偶联剂KH570）为改性剂，对纳米SiO2进行表面改性，并利用紫外可见分光光度计测定其在油中的稳定性，用四球试验和止推圈试验考察改性后纳米SiO2的抗磨减磨性能，结果表明，用KH570改性后的纳米SiO2在20#润滑油中有很好的分散稳定性，将其添加到润滑油中进行摩擦磨损实验，证明，摩擦系数最多可降低约45％，磨损量明显减少，并出现负磨损现象。其作为润滑油添加剂能有效提高油品的抗磨减磨性能。The nano-SiO2 was modifided with KH570,and the dispersion stabilization performance were measured by ul- traviolet visible spectroscopical luminometer. The anti-weare and anti- friction performance were measured by four ball and stop thrust ring tests. The results show nano-SiO2 improved by KH570 has good dispersion stability in 20# lubri- cants. The friction and wear experiment that added modified nano-SiO2 into the lubricants show that friction coefficient can reduce about 45%, the wear amount can reduce obviously and appear negative wear phenomenon. Let it to he lubricants additives can improve the anti-friction effectively

关 键 词：纳米二氧化硅 表面改性 抗磨减磨 

分 类 号：TF123.7[冶金工程—粉末冶金]