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Using an electron paramagnetic resonance method for testing motor oils

Journal Article:

Abstract

Using an ER-9 spectrometer from the Karl Zeiss company, the relative effectiveness is studied of antioxidation additives. Motor oils of the E group, M6AD, 465, M6AD, 466, M6AD 467, 15 W/40, S-3/2 M/4, R-950, which contain the antioxidation additive were tested in Petter AV-1 motors at a temperature of 50 degrees for 120 hours and Petter AVB at a temperature of 90 degrees for 53 hours. To measure the concentration of free radicals of the antioxidation additives one part of 2,2-diphenyl-1-picrylhydrazine (I), which forms stable dimagnetic products with the radicals of the antioxidation additives was introduced into each three parts of the oil. The reduction in the intensity of the signal of I was the measure of the radical concentration. The spectrum was taken for 1 to 2 minutes. The graphs of the dependence of the electron paramagnetic resonance on the test time and the concentration of I are built. The beginning and end of the induction period of oxidation of the oils and the change in the hourly activity of the PP was recorded.
Authors:
Publication Date:
Jan 01, 1982
Product Type:
Journal Article
Reference Number:
EDB-84-041555
Resource Relation:
Journal Name: Ropa Uhlie; (Czechoslovakia); Journal Volume: 24:6
Subject:
02 PETROLEUM; LUBRICATING OILS; ELECTRON SPIN RESONANCE; MOTORS; ADDITIVES; ANTIOXIDANTS; EPR SPECTROMETERS; LUBRICANTS; OXIDATION; PETROLEUM PRODUCTS; RADICALS; TEMPERATURE MEASUREMENT; TESTING; CHEMICAL REACTIONS; MAGNETIC RESONANCE; MEASURING INSTRUMENTS; OILS; ORGANIC COMPOUNDS; OTHER ORGANIC COMPOUNDS; RESONANCE; SPECTROMETERS; 020500* - Petroleum- Products & By-Products
OSTI ID:
5358275
Country of Origin:
Serbia and Montenegro
Language:
Czech
Other Identifying Numbers:
Journal ID: CODEN: ROUHA
Submitting Site:
HEDB
Size:
Pages: 336-342
Announcement Date:

Journal Article:

Citation Formats

Krais, S, and Tkac, T. Using an electron paramagnetic resonance method for testing motor oils. Serbia and Montenegro: N. p., 1982. Web.
Krais, S, & Tkac, T. Using an electron paramagnetic resonance method for testing motor oils. Serbia and Montenegro.
Krais, S, and Tkac, T. 1982. "Using an electron paramagnetic resonance method for testing motor oils." Serbia and Montenegro.
@misc{etde_5358275,
title = {Using an electron paramagnetic resonance method for testing motor oils}
author = {Krais, S, and Tkac, T}
abstractNote = {Using an ER-9 spectrometer from the Karl Zeiss company, the relative effectiveness is studied of antioxidation additives. Motor oils of the E group, M6AD, 465, M6AD, 466, M6AD 467, 15 W/40, S-3/2 M/4, R-950, which contain the antioxidation additive were tested in Petter AV-1 motors at a temperature of 50 degrees for 120 hours and Petter AVB at a temperature of 90 degrees for 53 hours. To measure the concentration of free radicals of the antioxidation additives one part of 2,2-diphenyl-1-picrylhydrazine (I), which forms stable dimagnetic products with the radicals of the antioxidation additives was introduced into each three parts of the oil. The reduction in the intensity of the signal of I was the measure of the radical concentration. The spectrum was taken for 1 to 2 minutes. The graphs of the dependence of the electron paramagnetic resonance on the test time and the concentration of I are built. The beginning and end of the induction period of oxidation of the oils and the change in the hourly activity of the PP was recorded.}
journal = {Ropa Uhlie; (Czechoslovakia)}
volume = {24:6}
journal type = {AC}
place = {Serbia and Montenegro}
year = {1982}
month = {Jan}
}