摘要
A new kind of silicon-based biological lubricating base oil with good viscosity-temperature behavior,viscosity index,thermostability,oxidation stability and wear resistance performance was synthesized as a derivative of methyl oleate.Trimethylsilylation reaction was introduced to further improve methyl oleate oxidation stability and lubricity after epoxidation and open-ring reactions.The order of effectiveness of acid binding agent was N,N-diisopropylethylamine(DIEA) > pyridine > diethylamine > triethylamine,and the effects of various parameters on the trimethylsilylation reaction as well as on the silicon-oxygen bond stability and reaction yield were studied.A maximum yield of 34.54%was achieved at hydroxyl/trimethyl chlorosilane/DIEA molar ratio of1:1.25:1,reaction temperature 40℃,reaction time 1.5 h.
A new kind of silicon-based biological lubricating base oil with good viscosity-temperature behavior,viscosity index,thermostability,oxidation stability and wear resistance performance was synthesized as a derivative of methyl oleate.Trimethylsilylation reaction was introduced to further improve methyl oleate oxidation stability and lubricity after epoxidation and open-ring reactions.The order of effectiveness of acid binding agent was N,N-diisopropylethylamine（DIEA） 〉 pyridine 〉 diethylamine 〉 triethylamine,and the effects of various parameters on the trimethylsilylation reaction as well as on the silicon-oxygen bond stability and reaction yield were studied.A maximum yield of 34.54%was achieved at hydroxyl/trimethyl chlorosilane/DIEA molar ratio of1：1.25：1,reaction temperature 40℃,reaction time 1.5 h.
基金
Supported by the National Natural Science Foundation of China(21306088)
National Key Technologies R&D Program of China(2015BAD15B07)
State Key Laboratory of Chemical Engineering(SKL-Ch E-13A01,Tsinghua University,China)
Priority Academic Program Development of Jiangsu Higher Education Institutions(PAPD,China)
关键词
润滑油基础油
甲酯衍生物
油酸甲酯
硅基
三甲基氯硅烷
氧化稳定性
硅烷化反应
改性
Methyl oleate Trimethyl chlorosilane Acid binding agent N,N-diisopropylethylamine Lubricity Silicon-based biological lubricating base oil
