CAJ | 학술논문

某型航空润滑油主要由基础油聚α－烯烃（ PAO）和抗氧剂N－苯基－α－萘胺（ T531）组成。借助高温高压反应釜模拟航空发动机温度，研究不同温度下抗氧剂T531对PAO理化性能的影响，并利用气相色谱／质谱联用（ GC／MS）技术从分子水平上分析反应产物的结构组分变化，探究PAO和T531的高温衰变机制。结果表明，高温促使PAO基础油发生分子链断裂反应并产生了含氧化合物，致使PAO黏度降低和酸值升高；在一定温度范围内T531较好地延缓了PAO分子链的断裂； T531长时间在高温环境中也会发生衰变，产生大量链状酮类化合物，加深了润滑油颜色。
모형항공윤활유주요유기출유취α－희경（ PAO）화항양제N－분기－α－내알（ T531）조성。차조고온고압반응부모의항공발동궤온도，연구불동온도하항양제T531대PAO이화성능적영향，병이용기상색보／질보련용（ GC／MS）기술종분자수평상분석반응산물적결구조분변화，탐구PAO화T531적고온쇠변궤제。결과표명，고온촉사PAO기출유발생분자련단렬반응병산생료함양화합물，치사PAO점도강저화산치승고；재일정온도범위내T531교호지연완료PAO분자련적단렬； T531장시간재고온배경중야회발생쇠변，산생대량련상동류화합물，가심료윤활유안색。
An aviation lubricating oil is mainly composed of poly?α?olefin ( PAO) as base fluids and N?phenyl?α?naph?thylamine ( T531) as anti?oxidant. By stimulating temperatures of an aviation engineer in a high temperature and high pressure autoclave, the influence of anti?oxidant T531 under different temperatures on the physic?chemical property of PAO was researched, the changes of compounds and structures were analyzed by joint technologies of GC/MS at molecular levels, and the thermal degradation mechanism of PAO and T531 was investigated. The results show that the molecular chain breakage and the oxidative reactions of PAO base fluids were prominent at high temperature, which caused reducing of lubricant viscosity and raising the acid value of PAO. T531 is helpful to T531 is quite helpful to slow down the molecu?lar chain breakage of PAO in a certain temperature range. T531 is also degraded at high temperature for a long time, and a large number of chain ketones compounds are produced, which leads to the color deepening of lubricating oils.