CAJ | 학술논문

利用气相色谱，通过外标法定量分析某飞机发动机在用润滑油中低温抗氧剂和高温抗氧剂的衰变规律；利用加速氧化试验，探讨高温抗氧剂的热氧化动力学。结果表明：该航空润滑油在使用中，高温抗氧剂基本能维持在一定水平，其热氧化衰变过程近似为一级反应；补油可明显延缓润滑油高温抗氧剂的衰减速率，且补加油情况对抗氧化性能有一定影响；低温抗氧剂在使用中衰减比高温抗氧剂要快得多；通过检测润滑油的黏度和总酸值变化，可以监控航空润滑油的氧化衰变，从而有效保障飞机发动机的润滑油使用安全。
이용기상색보，통과외표법정량분석모비궤발동궤재용윤활유중저온항양제화고온항양제적쇠변규률；이용가속양화시험，탐토고온항양제적열양화동역학。결과표명：해항공윤활유재사용중，고온항양제기본능유지재일정수평，기열양화쇠변과정근사위일급반응；보유가명현연완윤활유고온항양제적쇠감속솔，차보가유정황대항양화성능유일정영향；저온항양제재사용중쇠감비고온항양제요쾌득다；통과검측윤활유적점도화총산치변화，가이감공항공윤활유적양화쇠변，종이유효보장비궤발동궤적윤활유사용안전。
The degradation law of antioxidant additives in the oil samples of aviation lubricating oil obtained from air-crafts was analyzed with GC by means of external standard method. The thermal oxidation kinetics of antioxidant additives at high temperature was studied through using accelerated oxidation tests. The results show that a level of the concentration of the high temperature antioxidant additive can be maintained for a relatively long time for application of this kind of avia-tion lubricating oil. The thermal oxidative degradation process of it is considered approximately as a first order reaction. Oil supplement can extent the degradation rate apparently of high temperature antioxidant of lubrication oil,and the mode of the supplement can also affect the antioxidant performance. However,the low temperature antioxidant additive is van-ished much faster than high temperature antioxidant. The changes of viscosity and total acid number of lubrication oil can be detected to monitor the oxidation degradation,thereby effectively ensure the safety of aviation lubricating oil utilization of an engine of airplane.