高温氧化对癸二酸二异辛酯黏度及黏温特性的影响
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摘要
癸二酸二异辛酯是双酯型合成航空润滑油50-1-4Ф黏度和黏温特性的影响,以期为合成酯航空润滑油的使用和改进提供技术支持。在200℃的温度下,用反应釜模拟了航空润滑油的氧化条件,将50-1-4Ф探讨其黏温特性变化情况。50-1-4Ф数从135.5下降到115.0,表明高温氧化对50-1-4Ф黏温特性与Andrade方程的相关系数在1.0到0.9995之间,可以用Andrade方程来描述其黏温特性。
Diisooctyl sebacate was a base oil of diesters synthetic aviation lubricant 50-1-4Φ. The effect of elevated temperature oxidation time on the kinematic viscosity and viscosity-temperature characteristics of 50-1-4Φaviation lubricant was investigated in order to provide technical support for the use and improvement of synthetic ester aviation lubricants. The oxidation conditions of aviation lubricant were simulated in a reactor at a temperature of 200 ℃. 50-1-4 Φ aviation lubricant was oxidized sequentially for 2 h, 10 h,20 h,50 h and 100 h. The kinematic viscosity and viscosity index of the oil sample after oxidation were determined, and the change of viscositytemperature characteristics were explored. The kinematic viscosity of 50-1-4Φ aviation lubricant gradually decreased with the increase of oxidation time, and it changed rapidly in the initial stage. Its viscosity index decreased from 135.5 to 115.0,indicating that elevated temperature oxidation had a greater impact on the viscositytemperature characteristics of 50-1-4Φ aviation lubricants. The correlation coefficient between the viscosity of50-1-40 aviation lubricant after oxidation and the Andrade equation was between 1.0 and 0.9995. The Andrade equation could be used to describe the viscosity-temperature characteristics.
Diisooctyl sebacate was a base oil of diesters synthetic aviation lubricant 50-1-4Φ. The effect of elevated temperature oxidation time on the kinematic viscosity and viscosity-temperature characteristics of 50-1-4Φaviation lubricant was investigated in order to provide technical support for the use and improvement of synthetic ester aviation lubricants. The oxidation conditions of aviation lubricant were simulated in a reactor at a temperature of 200 ℃. 50-1-4 Φ aviation lubricant was oxidized sequentially for 2 h, 10 h,20 h,50 h and 100 h. The kinematic viscosity and viscosity index of the oil sample after oxidation were determined, and the change of viscositytemperature characteristics were explored. The kinematic viscosity of 50-1-4Φ aviation lubricant gradually decreased with the increase of oxidation time, and it changed rapidly in the initial stage. Its viscosity index decreased from 135.5 to 115.0,indicating that elevated temperature oxidation had a greater impact on the viscositytemperature characteristics of 50-1-4Φ aviation lubricants. The correlation coefficient between the viscosity of50-1-40 aviation lubricant after oxidation and the Andrade equation was between 1.0 and 0.9995. The Andrade equation could be used to describe the viscosity-temperature characteristics.
引文
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[2]郭忠烈,费逸伟,姜旭峰,等.润滑油黏度指标分析[J].化工时刊,2017,31(5):32-36.
[3]徐敏.航空涡轮润滑油应用[M].北京:石油工业出版社,1997:32.
[4]谢凤,张宁波.润滑剂性质与应用[M].徐州:空军勤务学院,2014:128.
[5]郭峰,费逸伟,彭兴隆,等.金属对航空油料氧化安定性的影响探究[J].石油技术与应用,2015,33(5):452-455.
[6]唐红金,梁宇翔,贺景坚,等.航空润滑油氧化安定性评定指标相互关联性研究[J].石油炼制与化工,2010,41(6):17-20.
[7]吴楠,费逸伟,马军,等.某型航空发动机润滑油的热氧化安定性研究[J].润滑与密封,2017,42(6):11-16.
[8]张剑,金映丽,马先贵,等.现代润滑技术[M].北京:冶金工业出版社,2008:72-74.
[9]费逸伟,彭兴隆,姚婷,等.高温作用下酯类航空润滑油基础油的组分分析[J].石油化工,2014,43(12):1444-1449.
[10]雷猛,冯新泸.二维近红外光谱定量分析内燃机油黏度指数性能的研究[J].石油炼制与化工,2009,40(4):61-64.
[11]姜会泽,费逸伟,姚婷,等.酯类润滑油的结构对性能影响研究[J].当代化工,2015,44(7):1570-1572.
[12]王秀文,陈文艺,邹恺.润滑油基础油结构组成与性能关系研究进展[J].应用化工,2014,43(3):539-542.
[13]张峥,翁惠新,张鸣,等.不同加工工艺基础油的结构特征对其性能的影响(Ⅰ):饱和烃结构对其性能的影响[J].润滑与密封,2002,27(6):35-37.
[14]温诗铸,黄平.界面科学与技术[M],北京:清华大学出版社,2011:49.
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