长寿命低挥发性润滑脂的性能研究  

INVESTIGATION ON THE PERFORMANCE OF LONG-LIFE AND LOW-VOLATILE LUBRICATING GREASE

作　　者：郑会 周巍峰[2] 崔佩娟 侯占林[2] 何懿峰 Zheng Hui;Zhou Weifeng;Cui Peijuan;Hou Zhanlin;He Yifeng(SINOPEC Research Institute of Petroleum Processing Co.,Ltd.,Beijing 100083;Beijing Research Institute of Precise Mechatronic Controls)

机构地区：[1]中石化石油化工科学研究院有限公司,北京100083 [2]北京精密机电控制设备研究所

出　　处：《石油炼制与化工》2024年第7期111-118,共8页Petroleum Processing and Petrochemicals

摘　　要：针对航空航天装备苛刻工况环境对润滑脂性能的更高要求,分别制备了酰胺钠基润滑脂和全氟聚醚润滑脂,并将二者混合后加入抗氧剂、防锈剂、极压抗磨剂等添加剂,制备得到长寿命低挥发润滑脂(简称长寿低挥脂);研究了商品酰胺皂基润滑脂(简称商品酰胺脂)和长寿低挥脂的理化性能、润滑性能、轴承寿命及流变学等性能。结果表明:与商品酰胺脂比,长寿低挥脂的高温损失更小、钢网分油率更低,说明其具有更优的挥发性能和胶体安定性;长寿低挥脂四球试验钢球的磨斑直径为0.46mm,远低于前者的1.03 mm,轮毂轴承寿命为1228 h,远高于前者的760 h,说明其具有更优的极压抗磨性能、润滑性能和氧化安定性;长寿低挥脂的线性黏弹区更宽、高温结构保持能力更强,说明其具有更好的流变学性能和高温稳定性能。因此,长寿低挥脂的综合性能优良,可用于苛刻的特殊工况环境。Sodium amide lubricating grease and perfluoropolyether lubricating grease were prepared to meet the higher requirements of the performance of lubricating grease in the harsh working conditions of aerospace equipment,and the long-life low-volatile grease was prepared byadding antioxidant,antirust agent and extreme pressure antiwear agent,etc.The physical and chemical properties,lubrication properties,bearing life and rheology properties of commercial amide soap-based grease and the long-life low-volatility grease were studied.The results showed that compared with commercial amide soap-based grease,the long-life low-volatile ester had lesslossat high temperature and lower oil separation ratio,which indicated that it hadbetter colloidal stability.The wear spot diameter of the long-life low-volatile grease test steel ball was 0.46 mm,which was much lower than 1.03 mm of commercial amide grease.The bearing life was as long as 1228 h,which was much longer than 760 h of commercial amide grease.These results showed that it had better extreme pressure and antiwear performance,lubrication performance and oxidation stability,andhad a wider linear viscoelastic region and a stronger structure retention abilityat high temperature.Therefore,the long-life low-volatility grease has excellent comprehensive performance and can be used for lubrication of equipment under various special working conditions.

关 键 词：润滑脂 酰胺钠 全氟聚醚 流变性 

分 类 号：TE626.4[石油与天然气工程—油气加工工程]