文章摘要
彭显才,费逸伟,吴楠,姚婷,郭峰,姜会泽.金属催化下两种航空润滑油基础油高温氧化衰变性能对比分析[J].润滑与密封,2017,42(8):71-76
金属催化下两种航空润滑油基础油高温氧化衰变性能对比分析
Comparative Analysis of High Temperature Oxidation Decay Performance of Two kinds of Aviation Lubricating Base Oil under Metal Catalysis
  
DOI:10.3969/j.issn.0254-0150.2017.08.013
中文关键词: 润滑油基础油  高温氧化  金属催化  性能衰变
英文关键词: lubricating base oil  high temperature oxidation  metal catalysis  performance decay
基金项目:江苏省自然科学基金项目(BK20161187);江苏省青年基金项目(BK20150166);空军装备部项目(KJ2012283);空军后勤部项目(CKJ13007).
作者单位E-mail
彭显才 空军勤务学院航空油料物资系 332952344@qq.com 
费逸伟   
吴楠   
姚婷   
郭峰   
姜会泽   
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中文摘要:
      通过金属筛选实验,选定Cu片作为航空润滑油高温氧化实验金属用材。在金属和抗氧剂存在下,模拟航空润滑油基础油PAO和己二酸二异辛酯(DIOA)的高温工作环境,分析反应后2种油样的外观、黏度和酸值变化,并利用傅立叶红外光谱技术(FTIR)分析油品性能衰变的原因。实验结果表明:随温度的升高,PAO和DIOA会发生氧化和裂解,不同程度地出现颜色加深、黏度降低、酸值增大等现象。FTIR分析可知,PAO油样高温衰变的过程中断链产生了大量饱和烃,DIOA油样水解产生酸、醛和醇等含氧化合物,2类油样均检测到O=C-H、C=O和O-H等官能团。高温下,PAO易发生断链,产生碳数更少的烃分子,导致260 ℃时黏度就出现急剧下降现象,而DIOA具有较好的热稳定性,其黏度骤降出现在300 ℃左右;酯类油DIOA氧化和裂解易产生羧酸,导致其酸值衰变程度远大于PAO。〖
英文摘要:
      The copper sheet was selected as metal material to be used in the high temperature thermal oxidation experiments of aviation lubricating oils by means of metal screening experiments.In the presence of metal and antioxidant,the high temperature operating environment of aviation lubricating based oils including PAO and di isooctyladipate (DIOA) was simulated,and the variation of appearance,viscosity and acid value of the two oil samples after reaction were analyzed by contrast.The reason of oil property degradation was analyzed by FTIR.The results show that with the increasing of temperature,the color of PAO and DIOA oil samples is deepened,the kinematic viscosity is decreased and the acid value is increased due to the thermal oxidation and thermal cracking reactions of PAO and DIOA.According to the FTIR analysis results,it’s found that in the high temperature decay process,a large number of saturated hydrocarbons is produced for PAO oil samples,and the oxygen compounds,such as acid,aldehyde and ketone,are produced for the by the DIOA oil samples because of the hydrolysis of DIOA.The functional groups are found in the two kinds of oil samples,such as O=C-H,C=O,O-H and so on.The chain of PAO is easy to be broken under high temperature to produce the hydrocarbon molecules with less carbon number,leading to the sharply decreasing of viscosity at 260 ℃.While DIOA has good thermal stability,the sharply decreasing of viscosity is at about 300 ℃.The oxidation and cracking of the ester oil of DIOA will produce carboxylic acids,resulting in the acid value decay degree is much larger than that of PAO.
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