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以纯菜籽油作为基础油,十二羟基硬脂酸为稠化剂,选择较好的稠化剂与基础油比例,在皂化前加入纳米氧化镧,利用“老三套”工艺方法皂化成锂基脂。所用菜籽油经过脱色处理,纳米氧化镧粒径范围20 nm~50 nm。利用红外、TG、和SEM等检测方法,对基础油、锂基脂和纳米氧化镧进行表征。通过四球摩擦机考察其摩擦学性能,并对磨斑进行SEM和EDS等检测。结果表明,稠化剂与基础油比例为6∶1较好,当添加少量的纳米氧化镧时,有助于润滑脂抗磨减磨效果,与未添加的锂基脂相比,磨斑减小,摩擦系数减小,热稳定性提高。
Using pure rapeseed oil as the base oil, 12-hydroxystearic acid as a thickener, choose a better thickener and base oil ratio, adding nano-lanthanum before saponification, the use of Lithium grease. The rapeseed oil used after bleaching treatment, lanthanum oxide particle size range 20 nm ~ 50 nm. The base oil, lithium grease and nano lanthanum oxide were characterized by infrared, TG, SEM and other detection methods. The four-ball friction machine was used to investigate its tribological properties, and SEM and EDS were used to detect the wear spots. The results show that the ratio of thickener to base oil is 6: 1. When a small amount of lanthanum oxide is added, it will contribute to anti-wear and anti-wear effect of grease. Compared with non-added lithium grease, Small, friction coefficient decreases, thermal stability improved.