三羟甲基丙烷油酸酯基础油热氧化规律研究  

Thermal Oxidation Research of Trimethylolpropane Trioleate Synthetic Lubricant

作　　者：金永亮[1] 钱绪政[1] 向亚玲[1] 刘建芳[1] 李健[1] 

机构地区：[1]武汉材料保护研究所,湖北武汉430030

出　　处：《润滑与密封》2014年第12期39-42,23,共5页Lubrication Engineering

基　　金：国家重点基础研究发展计划(973计划)项目(2013CB632303)

摘　　要：采用恒温箱氧化法,将三羟甲基丙烷油酸酯(TMPTO)基础油分别在不同温度下(95、135、175、250℃)进行连续氧化,测试不同氧化时间下TMPTO的运动黏度和总酸值,获得其热氧化行为与氧化温度和氧化时间的定量关系;运用红外光谱法和差示扫描量热法对TMPTO不同氧化时间下的热氧化产物和性能进行分析,探讨其热氧化规律。结果表明:在一定温度下,随着热氧化时间的延长,TMPTO基础油运动黏度的对数和总酸值呈线性增加关系,热氧化温度越高,线性斜率越大;随着温度的升高,氧化时间的增加,TMPTO基础油的氧化诱导温度降低;FTIR分析表明TMPTO基础油在氧化过程中产生了氢过氧化物以及醇类产物。The trimethylolpropane trioleate（TMPTO）synthetic lubricant was oxidized by the oven under 95,135,175 and 250 ℃,the kinematic viscosity and acid value of TMPTO were tested at different oxidation time responsively.By fitting the curves of kinematic viscosity and total acid number with oxidation time at different oxidation temperatures,the relation-ship between thermal oxidative behavior,the oxidative time and the oxidative temperature was determined.The thermal oxi-dation products and their performances of TMPTO at different oxidation time were determined by FTIR and DSC.The re-sults suggest that the total acid number and the logarithm of kinematic viscosity of TMPTO synthetic lubricant tend to in-crease linearly with the oxidation time at a certain temperature,and the linear slope is bigger with the oxidation temperature increasing.The oxidative inducing temperature of TMPTO is reduced with the increase of oxidation temperature and oxida-tion time.FTIR analysis indicates that hydroperoxides and alcohols are produced during the oxidative process.

关 键 词：三羟甲基丙烷油酸酯 氧化 运动黏度 总酸值 

分 类 号：TE626.3[石油与天然气工程—油气加工工程]