CAJ | 학술논문

在柴油机润滑油中分别加入不同比例的硬脂酸甲酯、油酸甲酯和亚油酸甲酯，通过高温氧化试验对柴油机润滑油的氧化过程进行了模拟。采用旋转氧弹法和傅里叶红外光谱对柴油机润滑油的氧化诱导期和氧化衰变产物结构组成进行了试验分析。结果表明，不饱和脂肪酸甲酯的存在加速了柴油机润滑油的氧化，且不同质量等级的脂肪酸甲酯对柴油机润滑油氧化速率影响程度不同，其由大到小顺序依次为 CD 15W／40＋亚油酸甲酯， CD 15W／40＋油酸甲酯，CD 15W／40＋硬脂酸甲酯，CD 15W／40。
재시유궤윤활유중분별가입불동비례적경지산갑지、유산갑지화아유산갑지，통과고온양화시험대시유궤윤활유적양화과정진행료모의。채용선전양탄법화부리협홍외광보대시유궤윤활유적양화유도기화양화쇠변산물결구조성진행료시험분석。결과표명，불포화지방산갑지적존재가속료시유궤윤활유적양화，차불동질량등급적지방산갑지대시유궤윤활유양화속솔영향정도불동，기유대도소순서의차위 CD 15W／40＋아유산갑지， CD 15W／40＋유산갑지，CD 15W／40＋경지산갑지，CD 15W／40。
Lubricating oil mixed with different proportions of methyl stearate ,methyl oleate and methyl linoleate respectively was conducted ,and then the oxidation process of lubricating oil was simulated through high temperature oxidation tests .The oxidation induction period and oxidation deterioration product composition of lubricating oil were analyzed with the rotating bomb method and Fourier infrared spectrum method .The results showed that unsaturated fatty acid methyl ester was more lia‐ble to accelerate oxidation deterioration of lubricating oil and its different quality levels had different influences on oxidation ve‐locity .and the influencing extent from large to small are CD 15W/40 + methyl linoleate ,CD 15W/40 + methyl oleate , CD 15W/40+methyl stearate and CD 15W/40 respectively .