合成润滑油多因素降解实验方法研究

摘要

With castor oil-based lube as an object investigated,degradation test for the synthetic lube was implemented under not a single degradation factor.Based on the biodegradation of the given lube,one new abiotic degradation factor, photodegradation was supplied to simulate the true degradation process of the given lube in the natural environment and further to establish the lube’s degradation testing method in lab under not a single degradation factor.Infrared spectrometry was used to measure the remained content of the lube after degradation,and the lube’s degradation rate was counted.The results show that the testing data from the new testing method possess excellent stability and repeatability,and show rela-tively good consistency with the results reported in the references.The photodegradation rate of the lube is also acquired from the new testing method.Although the value is relatively low,the influence of light on lube degradation can not be ig-nored.%以蓖麻油基润滑油为例，研究润滑油在非单一因素作用下的降解实验方法。在润滑油生物降解因素基础上增加非生物降解因素———光照，来模拟润滑油在自然环境中的真实降解情况，建立非单一降解因素联合作用下润滑油的室内降解实验方法，运用红外光谱法检测润滑油降解后残余含量，确定润滑油降解率。结果表明：新方案得到的实验数据具有较好的稳定性和重复性，且与文献结果具有较好的一致性；新实验方案可以得到润滑油的光降解率，虽然光降解率相对较低，但光对润滑油的降解作用不能忽略。