Thermal stability characteristics of some mineral oil and hydrocarbon hydraulic fluids and lubricants

E. E. Klaus, J. M. Perez

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Abstract

The thermal stability properties of n-hexadecane, super-refined mineral oils, and oligomers have been measured as a function of time and temperature. The versatility of the PRL pressure cylinder thermal stability test is demonstrated. Chromatographic techniques to provide quantitative data on the products of decomposition are described. The similarity in mechanism is shown for the thermal degradation of pure hydrocarbons and mineral oils, while distinctly different mechanisms are shown for mineral oils and oligomers. Differences in the thermal degradation reactions in the gas and liquid phases emphasize the need for close control of any standard long time thermal stability test because of secondary reactions involved. The large effects of small amounts of gas and volatile products formed on the measurements conventionally used to estimate thermal degradation are discussed.

Original languageEnglish (US)
Pages (from-to)38-47
Number of pages10
JournalASLE Transactions
Volume10
Issue number1
DOIs
StatePublished - Jan 1967

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All Science Journal Classification (ASJC) codes

  • Engineering(all)
  • Mechanics of Materials
  • Mechanical Engineering
  • Surfaces and Interfaces
  • Surfaces, Coatings and Films

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