改性硅胶作为PAO-10润滑添加剂摩擦学性能研究  

Tribological behavior of modified silica gels as lubricant additives in PAO-10

作　　者：邱吉霞 白梓静 高鹏 王雨萌 QIU Ji-xia;BAI Zi-jing;GAO Peng;WANG Yu-meng(Shaanxi Key Laboratory of Phytochemistry,College of Chemistry&Chemical Engineering,Baoji University of Arts and Sciences,Baoji 721013,Shaanxi,China;School of Materials Science and Chemical Engineering,Xi'an Technological University,Xi'an 710021,Shaanxi,China)

机构地区：[1]宝鸡文理学院化学化工学院,陕西省植物化学重点实验室,陕西宝鸡721013 [2]西安工业大学材料与化工学院,陕西西安710021

出　　处：《宝鸡文理学院学报（自然科学版）》2024年第1期19-27,共9页Journal of Baoji University of Arts and Sciences(Natural Science Edition)

基　　金：陕西省科技计划面上项目(2024JC-YBMS-120)。

摘　　要：目的合成4种改性硅胶,并将其作为PAO-10的润滑油添加剂,考察其摩擦学性能,并对润滑机理进行分析。方法采用棕榈酰氯对不同目数的普通硅胶进行改性,形成长烃链酰胺官能团,并通过傅里叶红外光谱仪对其结构进行确认。进一步通过摩擦磨损试验机和三维轮廓仪对润滑体系的摩擦学性能进行表征,采用接触角、扫描电子显微镜(SEM)、能谱仪(EDS)和X射线光电子能谱(XPS)对润滑机理进行研究。结果该系列改性硅胶添加剂极大改善了PAO-10的摩擦学性能。当向PAO-10中添加1.0%的改性硅胶S_(200~300)PMAD后,PAO-10的摩擦系数降低了60%,磨损体积降低了74%。结论摩擦副表面形成一定厚度的物理吸附膜层和含Fe_(2)O_(3)的化学反应膜层,二者共同提升了润滑体系的摩擦学性能,改性硅胶上附着的烷基链和活性杂原子是形成该保护膜的重要原因。Purposes-To improve the tribological properties of PAO-10 by synthesizing 4 examples of silicone oil-based additives.Methods-Common silica gels with different meshes were modified by palmitoyl chloride with a simple method,by which the amide bond was formed.Then,the chemical structures were confirmed by FTIR and the tribological performances were evaluated by SRV and 3D profiler.Furthermore,a possible lubricant mechanism was proposed after the tests including contact angle,SEM,EDS and XPS.Results-The results indicated that these additives could greatly improve the tribological performance of base oils.Specifically,when 1.0%modified silicone S 200~300 PMAD was added to PAO-10,the friction coefficient of PAO-10 is reduced by 60%and the wear volume decreased by 74%.Conclusions-After the analysis including contact angle,SEM,EDS and XPS,it is shown that the alkyl chains and active heteroatoms on silica gels is crucial to its dispersion stability and the formation of protective films,which further improve the tribological performances of PAO-10.

关 键 词：硅胶 润滑剂添加剂 摩擦膜 

分 类 号：TH117.22[机械工程—机械设计及理论]