Using thermal analysis techniques for identifying the flash point temperatures of some lubricant and base oils

Using thermal analysis techniques for identifying the flash point temperatures of some lubricant and base oils

The flash point (FP) temperatures of some lubricant and base oils were measured according to ASTM D92 and ASTM D93. In addition, the thermal stability of the oils was studied using differential scanning calorimeter (DSC) and thermogravimetric analysis (TGA) under nitrogen atmosphere. The DSC results...

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Main Authors: Aksam Abdelkhalik, Hany Elsayed, Mohamed Hassan, Mohamed Nour, A.B. Shehata, Maher Helmy
Format: Article
Language:English
Published: Elsevier 2018-03-01
Series:Egyptian Journal of Petroleum
Online Access:http://www.sciencedirect.com/science/article/pii/S1110062116301994
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spelling doaj-093e4d668dc74404b2dab8db36c97de82020-11-24T23:53:51ZengElsevierEgyptian Journal of Petroleum1110-06212018-03-01271131136Using thermal analysis techniques for identifying the flash point temperatures of some lubricant and base oilsAksam Abdelkhalik0Hany Elsayed1Mohamed Hassan2Mohamed Nour3A.B. Shehata4Maher Helmy5National Institute for Standards, Tersa Street, El-Haram, El-Giza, P.O.B 136 Giza, Code 12211, EgyptNational Institute for Standards, Tersa Street, El-Haram, El-Giza, P.O.B 136 Giza, Code 12211, Egypt; Corresponding author.National Institute for Standards, Tersa Street, El-Haram, El-Giza, P.O.B 136 Giza, Code 12211, EgyptNational Institute for Standards, Tersa Street, El-Haram, El-Giza, P.O.B 136 Giza, Code 12211, EgyptNational Institute for Standards, Tersa Street, El-Haram, El-Giza, P.O.B 136 Giza, Code 12211, EgyptDepartment of Chemistry, Faculty of Science, Helwan University, Cairo, EgyptThe flash point (FP) temperatures of some lubricant and base oils were measured according to ASTM D92 and ASTM D93. In addition, the thermal stability of the oils was studied using differential scanning calorimeter (DSC) and thermogravimetric analysis (TGA) under nitrogen atmosphere. The DSC results showed that the FP temperatures, for each oil, were found during the first decomposition step and the temperature at the peak of the first decomposition step was usually higher than FP temperatures. The TGA results indicated that the temperature at which 17.5% weigh loss take placed (T17.5%) was nearly identical with the FP temperature (±10 °C) that was measured according to ASTM D92. The deviation percentage between FP and T17.5% was in the range from −0.8% to 3.6%. Keywords: Flash point, TGA, DSChttp://www.sciencedirect.com/science/article/pii/S1110062116301994
collection DOAJ
language English
format Article
sources DOAJ
author Aksam Abdelkhalik
Hany Elsayed
Mohamed Hassan
Mohamed Nour
A.B. Shehata
Maher Helmy
spellingShingle Aksam Abdelkhalik
Hany Elsayed
Mohamed Hassan
Mohamed Nour
A.B. Shehata
Maher Helmy
Using thermal analysis techniques for identifying the flash point temperatures of some lubricant and base oils
Egyptian Journal of Petroleum
author_facet Aksam Abdelkhalik
Hany Elsayed
Mohamed Hassan
Mohamed Nour
A.B. Shehata
Maher Helmy
author_sort Aksam Abdelkhalik
title Using thermal analysis techniques for identifying the flash point temperatures of some lubricant and base oils
title_short Using thermal analysis techniques for identifying the flash point temperatures of some lubricant and base oils
title_full Using thermal analysis techniques for identifying the flash point temperatures of some lubricant and base oils
title_fullStr Using thermal analysis techniques for identifying the flash point temperatures of some lubricant and base oils
title_full_unstemmed Using thermal analysis techniques for identifying the flash point temperatures of some lubricant and base oils
title_sort using thermal analysis techniques for identifying the flash point temperatures of some lubricant and base oils
publisher Elsevier
series Egyptian Journal of Petroleum
issn 1110-0621
publishDate 2018-03-01
description The flash point (FP) temperatures of some lubricant and base oils were measured according to ASTM D92 and ASTM D93. In addition, the thermal stability of the oils was studied using differential scanning calorimeter (DSC) and thermogravimetric analysis (TGA) under nitrogen atmosphere. The DSC results showed that the FP temperatures, for each oil, were found during the first decomposition step and the temperature at the peak of the first decomposition step was usually higher than FP temperatures. The TGA results indicated that the temperature at which 17.5% weigh loss take placed (T17.5%) was nearly identical with the FP temperature (±10 °C) that was measured according to ASTM D92. The deviation percentage between FP and T17.5% was in the range from −0.8% to 3.6%. Keywords: Flash point, TGA, DSC
url http://www.sciencedirect.com/science/article/pii/S1110062116301994
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