国产与进口聚α-烯烃润滑油性能对比

PERFORMANCE COMPARISON OF DOMESTIC AND IMPORTED PAO LUBRICATING BASE OIL

以国产低黏度聚α-烯烃润滑油为研究对象,通过黏度、酸值、倾点等指标,结合差示扫描量热(DSC)技术,考察其理化性能品质,并与同规格进口产品相比较,分析二者在润滑性、腐蚀性、热氧化安定性等方面的差异。结果表明:国产聚α-烯烃润滑油的酸值和倾点受温度影响较小,而黏度受温度的影响较大,随着反应温度的升高,运动黏度逐渐降低,且进口产品的变化幅度明显大于国产产品;国产与进口聚α-烯烃润滑油基础油的热氧化安定性相差不大,对抗氧剂的感受性也差别不大,在较高的温度下,胺型抗氧剂的抗氧化性能均优于酚型抗氧剂。

The performance comparison of domestic low viscosity PAO lubricating oil and imported PAO with similar specification in lubricity,corrosivity and thermal oxidation stability was conducted by measuring the acid value, pour point and viscosity index, combined with differential scanning calorimetry （DSC） technique. It is found that temperature has a little influence on acid value and pour point, different from viscosity. The viscosity of domestic PAO decreases with increasing temperature, but with less variation range compared with the imported oil. The differential scanning calorimetry （DSC） indicates that the thermal stability and the sensitivity to anti-oxidation agent are close to each other. At higher temperature, the amine type antioxi- dant shows better anti-oxidation ability compared with the phenol antioxidant.