PDSC accelerates oxidation analysis time
2021-01-27
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.