改性氧化石墨烯的制备及在润滑油中的摩擦学性能  

Preparation and tribological properties of graphene-modified as lubricant additive

作　　者：王美娜 杨凤[2] 田华 毛佳伟 郝星杰[1] 刘忠瑜 WANG Mei-na;YANG Feng;TIAN Hua;MAO Jia-wei;HAO Xing-jie;LIU Zhong-yu(Chengdu Product Quality Inspection Research Institute Co.,Ltd.,Chengdu,Sichuan,610065,China;College of Chemistry,Sichuan University,Chengdu,Sichuan,610065,China;Sichuan Product Quality Supervision,Inspection and Testing Institute,Chengdu,Sichuan,610065,China)

机构地区：[1]成都产品质量检验研究院有限责任公司,四川成都610199 [2]四川大学化学学院,四川成都610064 [3]四川省产品质量监督检验检测院,四川成都610199

出　　处：《化学研究与应用》2022年第7期1554-1565,共12页Chemical Research and Application

基　　金：四川省科技计划立项项目(2018JY0657);四川大学新世纪教育教学改革工程研究项目(SCU9134)。

摘　　要：以油胺为改性剂,对氧化石墨烯(GO)和深度氧化的氧化石墨烯(OGO)进行表面共价改性得到改性氧化石墨烯(NRGO和NROGO)。利用傅里叶变换红外光谱仪(FTIR)、X射线衍射光谱仪(XRD)、扫描电子显微镜(SEM)和拉曼光谱仪等仪器对NRGO和NROGO的微观结构和形貌进行表征,考察NRGO和NROGO作为润滑油添加剂的分散稳定性,采用四球摩擦试验机对NRGO和NROGO在润滑油基础油中的摩擦学性能进行测试。结果表明:通过酰胺化反应可以在GO和OGO表面成功接枝油胺分子,改性后GO和OGO在润滑油中分散稳定性显著提高。摩擦磨损测试发现,质量分数为0.01%的NRGO和NROGO可使润滑油基础油的润滑性能最佳。通过对比NRGO和NROGO的摩擦磨损性能,表明改性氧化石墨烯的微观结构、形貌与其摩擦磨损性能有密切的关系。Graphene-modified(NRGO and NROGO)was prepared by covalent surface modification of graphene oxide(GO)and deeply oxidized graphene oxide(OGO)with oleamine as modifier.The structure and morphology of NRGO and NROGO were characterized by fourier transform infrared spectroscopy(FTIR),X-ray diffraction(XRD),scanning electron microscopy(SEM)and Raman spectroscopy.The dispersion stability of Graphene-modified as additive in bas oil was investigated and their tribological properties as additive in lubricant base oil was investigated in the four-ball tester.The results indicate that the oleamine can be successfully grafted on the surface of GO and OGO via amidation reaction,the dispersion stability of modified GO and OGO in bas oil is increased significantly.Friction and wear test shows that when the NRGO and NROGO with the mass fraction of 0.01%can make the lubricating performance of lubricating oil base oil the best.By comparing the tribological properties of NRGO and NROGO,the microstructures and morphologies of Graphene-modified are closely related to its tribological properties.

关 键 词：氧化石墨烯 改性 摩擦磨损性能 

分 类 号：O624.13[理学—有机化学]