Pressure Differential Scanning Calorimetry (PDSC) testing method ASTM D5483, D6186, SH/T0719, SH/T 0790 is the use of pressure differential scanning calorimetry to determine the oxidation induction period of lubricating oil and grease. By detecting the heat released by oxidation within the thin oil film seated on a heated metal sample cell contained within an oxygen atmosphere, the measurement of the change in heat is used to characterize the oxidation of lubricating oil and grease.

The PDSC test method has already has a lot of application cases and studies, which can more accurately reflect the antioxidant content in lubricating oil and grease, in which it can effectively determine the degree of oxidation decay within the lubricating oil and grease. Comprehensively, the testing stages and analysis are fast and the results are accurate as well as repeatable. Compared with other traditional sample oxidation stability such as the lubricating grease oxidation stability test method SH/T 0325, the determination of the oxidation characteristics of lubricating oil with inhibitors of mineral oil GB/T 12581, the determination of the oxidation stability of lubricating oil (rotating oxygen bomb method) SH/T 0193, PDSC has the advantages of using less sample volumes, with quicker, faster and more efficient analysis. At the same time, PDSC has a good correlation with other oxidation tests, and has a certain corresponding relationship with the bench test.

Runningland has built a new PDSC measurement method on the basis of its original oxidation performance capability, shortening the test period of oxidation test, minimizing the length of the test, and helping customers obtain test results faster. In the future, we will also conduct research on temperature of hydrocarbon oxidation on this basis.