PMMA/SiC复合粒子对再生润滑油摩擦性能的影响  

Effect of PMMA/SiC composite particles on the friction properties of recycled lubricant oil

作　　者：武金龙[1,2,3,4] 田煜坤 母晶秋 WU Jinlong;TIAN Yukun;MU Jingqiu(College of Materials Science&Engineering,North Minzu University,Yinchuan 750021,China;Key Laboratory of Polymer Materials and Manufacturing Technology,North Minzu University,Yinchuan 750021,China;International Scientific and Technological Cooperation Base of Industrial Waste Recycling and Advanced Materials,Yinchuan 750021,China;National and Local Joint Engineering Research Center of Advanced Carbon-Based Ceramics Preparation Technology,Yinchuan 750021,China)

机构地区：[1]北方民族大学材料科学与工程学院,宁夏银川750021 [2]北方民族大学高分子材料及制造技术重点实验室,宁夏银川750021 [3]“工业废弃物循环利用及先进材料”国际科技合作基地,宁夏银川750021 [4]碳基先进陶瓷制备技术国家地方联合工程研究中心,宁夏银川750021

出　　处：《应用化工》2024年第11期2650-2653,2661,共5页Applied Chemical Industry

基　　金：宁夏自然科学基金(2019AAC03107,2023AAC03312);北方民族大学科研项目(2023XYZCL03)。

摘　　要：碳化硅(SiC)具有高温抗氧化性强、耐磨损性能好、硬度高等优良特性。SiC粒子表面经硅烷偶联剂处理后,原位聚合接枝聚甲基丙烯酸甲酯(PMMA)链进行复合和功能化,得到PMMA/SiC复合粒子,研究了其对再生润滑油摩擦性能的影响。结果表明,PMMA/SiC复合粒子的亲油性和在油中的分散性得到了显著提升,在再生润滑油中的添加量为0.25%时表现出最佳的抗摩擦效果,可使再生润滑油摩擦系数由0.16下降到0.05,减少68.9%。PMMA/SiC复合粒子加入再生润滑油后在磨损过程中沉积并填充到磨损表面的沟槽和刮痕处,起到了抛光以及滚珠轴承的作用。在不同工况下的摩擦磨损实验中能有效地覆盖摩擦副表面,减小摩擦系数,使摩擦副具有抗重载的性能。Silicon carbide(SiC)has excellent characteristics such as strong high-temperature oxidation resistance,good wear resistance,and high hardness.After the surface of SiC particles was treated with silane coupling agent,in-situ polymerization grafting of polymethyl methacrylate(PMMA)chains was carried out for composite and functionalization,resulting in PMMA/SiC composite particles.The effect of PMMA/SiC composite particles on the friction performance of regenerated lubricating oil was studied.The results showed that the hydrophilicity and dispersibility of PMMA/SiC composite particles in oil were significantly improved,and the best anti friction effect was observed when the addition amount in regenerated lubricating oil was 0.25%,which could reduce the friction coefficient of regenerated lubricating oil from 0.16 to 0.05,a decrease of 68.9%.PMMA/SiC composite particles added to regenerated lubricating oil deposit and fill the grooves and scratches on the worn surface during the wear process,playing a role in polishing and ball bearing.In friction and wear experiments under different working conditions,it can effectively cover the surface of the friction pair,reduce the friction coefficient,and make the friction pair have anti heavy load performance.

关 键 词：PMMA SIC 润滑油 摩擦性能 

分 类 号：TQ50.43[化学工程]