摘要
分析不同质量分数的氟化石墨烯对锂基润滑脂稠度、滴点、胶体安定性等理化性能和极压、抗磨和减摩性能等摩擦学性能的影响,分别采用扫描电子显微镜(SEM)、X射线光电子能谱(XPS)分析磨痕形貌并表征磨痕表面元素。结果表明:氟化石墨烯能提高润滑脂的稠度、胶体安定性和高温性,摩擦学方面能极大提升润滑脂极压性能和抗磨减磨性能。当氟化石墨烯添加量(质量分数)为0.5%时,润滑效果最好,最大无卡咬负荷和烧结负荷相较于基础脂分别提高了89.1%和98.4%,平均摩擦系数和磨斑直径分别降低20.2%和16.4%。氟化石墨作为添加剂能与氟化石墨烯发挥同等效用,但是效果整体相较于氟化石墨烯更弱。
The effect of different mass fractions of fluorinated graphene on the physicochemical properties and tribological properties of lithium grease was analyzed,such as consistency, drop point, colloidal stability,extreme pressure, anti-wear and anti-friction properties. Scanning electron microscopy(SEM) and X-ray photoelectron spectroscopy(XPS) were used to analyze the morphology of wear marks and characterize the surface elements of wear marks.The results showed that the fluorinated graphene could improve the consistency, colloidal stability and high temperature of the grease, and the extreme pressure performance of the grease and the anti-wear performance of the grease could be greatly improved. When the addition amount of fluorinated graphene was 0.5%, the lubrication effect was the best. Compared with the base grease, the maximum non-clamping load and sintering load were increased by 89.1% and 98.4%, respectively, and the average friction coefficient and spot diameter were decreased by 20.2% and 16.0%, respectively.Fluorinated graphite as an additive could play the same role as fluorine fossil ink, but the overall effect was weaker than fluorinated graphene.
作者
卢鹏
许世海
向硕
邱孝智
王昊康
罗健
LU Peng;XUShi-hai;XIANG Shuo;QU Xiao-zhi;WANG Hao-kang;LUO Jian(Army Logistics Academy,Chongqing 401311,China;The 32513 Unit of PLA,Nanping 353000,China;The 32724 Unit of PLA,Datong 037000,China)
出处
《当代化工》
CAS
2022年第2期257-262,共6页
Contemporary Chemical Industry
基金
国家自然基金青年基金项目(项目编号:51704301)
陆军勤务学院青年科研资助项目(项目编号:LQ-QN-201922)。
关键词
氟化石墨烯
氟化石墨
理化性能
摩擦学性能
Fluorinated graphene
Fluorinated graphite
Physical and chemical properties
Tribological property
