基于热分析法的二硫化钼润滑脂胶体安定性快速评定∗

摘要

针对实际应用过程中对润滑脂胶体安定性的快速评判要求，提出基于热分析法的润滑脂胶体安定性快速评定方法。采用热分析法（ TGA和DTA）考察2种二硫化钼润滑脂在室温至500℃下的质量及热量变化情况，评价其胶体安定性，并与分油试验结果进行对比，发现二者结论一致。该方法与传统分油试验相比较，具有快速准确的特点。%Aimed at requirements of rapid evaluation for colloid stability of lubricating grease in practical application process,a rapid evaluation method was proposed for colloid stability of lubricating grease based on thermal analysis method. This thermal analysis method( TGA and DTA) was applied to study the changing of mass and heat of molybdenum disulfide lubricating grease,and evaluate the colloid stability of two kinds of molybdenum disulfide lubricating greases. The evalua⁃tion results were compared with those of oil separation test.It is found that both results are the same.This method can used to evaluate the colloid stability of lubricating greases quickly and exactly compared with traditional oil separation test.