Lubricants Quality Analysis System Development. Volume 2. ChemicalCharacterization of Lubricants

摘要

Major phases of this study included providing the results, critical evaluation,and implications of a literature search in a 'white paper' on advanced analytical methodology for mobility fuels and lubricants applications, assessment of a commercial used engine oil evaluation methodology, and analysis and characterization of new lubricants. In assessing a commercial used oil analysis method, it was concluded that this FTIR-based used oil analysis method should he used only for trend analysis in which the lubricant and the fuel are known and controlled. Efforts were made to characterize and identify lubricants through instrumental analyses, including high-temperature gas chromatography, gel permeation chromatography, elemental analysis, spectroscopic fingerprinting, and establishing FTIR spectral libraries. To increase usefulness of the results of libraries of FTIR spectra data bases have been constructed to include all known specification and inspection data. Calibration curves were established to measure several major lubricating oil additive concentrations in a lubricant base stock, through their FTIR responses. Several increasingly complex experimental protocols are suggested, depending upon the source of lubricant and the needed lubricant property requirements. While a final experimental protocol has not yet been established, a tentative analytical chemical protocol was developed. Present experimental protocol does not address the detection and destruction of antimaterial agents. jg.