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Ethanol's effects on acid neutralization by motor oils
- Source :
- Tribology International. 132:24-29
- Publication Year :
- 2019
- Publisher :
- Elsevier BV, 2019.
-
Abstract
- Sulfuric-acid neutralization by motor oils in the presence of ethanol was investigated for the first time by quantitatively visualizing the fate of acid drops in five off-the-shelf commercial motor oils via capillary video-microscopy. For all the oils at room temperature, there was neutralization when ethanol was absent, whereas little neutralization was exhibited when ethanol was present. A very different behavior was exhibited at 100 °C, with rate of acid neutralization being much faster in the presence of ethanol than in absence. With 1% ethanol and temperature of 100 °C, acid droplets were neutralized in 2 min, whereas at room temperature droplets expanded ∼35% in diameter after 60 min with little neutralization. The reported phenomena may affect engine behavior and tribology.
- Subjects :
- Chromatography
Ethanol
Mechanical Engineering
02 engineering and technology
Surfaces and Interfaces
021001 nanoscience & nanotechnology
Neutralization
Surfaces, Coatings and Films
chemistry.chemical_compound
020303 mechanical engineering & transports
0203 mechanical engineering
chemistry
Mechanics of Materials
0210 nano-technology
Subjects
Details
- ISSN :
- 0301679X
- Volume :
- 132
- Database :
- OpenAIRE
- Journal :
- Tribology International
- Accession number :
- edsair.doi...........ad1cb932e9d9212abda3ae5f5f5fcb69