Photometric Monitoring of Thermal Stability of Motor Oils and Effect of Thermal Degradation Products on Antiwear Properties

Ковальский, Б. И.; Sokolnikov, A. N.; Петров, О. Н.; Шрам, В. Г.; Kravtsova, E. G.

doi:10.1007/s10553-016-0710-5

Cited by 3 publications

(2 citation statements)

References 0 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…We have carried out studies to determine the thermal stability and chemical activity of new synthesized compounds -esters of dithiophosphoric (DTP), xanthogenic (CTG) and dithiocarbamic (DTC) acids on the metal surface. This class of compounds is known to have lubricating properties [5,7]. General schemes for the preparation of esters and data on the IR and NMR spectra of some of the synthesized compounds are given below.…”

Section: Doiorg/1032737/0005-2531-2023-4-97-103mentioning

confidence: 99%

Synthesis of S,p,n-Containing Organic Compounds and Their Thermostability With Respect to Metals

Mamedov,

Kulibekova,

Veliyeva

et al. 2023

AChJ

View full text Add to dashboard Cite

The results of thermal studies of some derivatives of dithiophosphoric, xanthogenic, dithiocarbamic acids are presented. The thermal parameters of the compounds were determined both in pure form and in the presence of iron and copper powders. Their chemical activity with respect to iron and copper was studied. It has been found that the temperature at which the thermal stability of the studied compounds is maintained exceeds 1700С, and they are chemically active with respect to iron and copper: the lower the interaction temperature within the same row with iron and copper and the lower its mass loss corresponding to this temperature, the more effective it is like an extreme pressure (EP) additive. It has been found that compounds of the same series, reacting with metal by the type of synchronous and exchange reactions, have better indicators of extreme pressure properties than compounds interacting with metal by the type of asynchronous reaction

show abstract

Section: Doiorg/1032737/0005-2531-2023-4-97-103mentioning

confidence: 99%

Synthesis of S,p,n-Containing Organic Compounds and Their Thermostability With Respect to Metals

Mamedov,

Kulibekova,

Veliyeva

et al. 2023

AChJ

View full text Add to dashboard Cite

show abstract

“…Duong et al 16 studied the oxidation stability of neopolyol ester lubricants using small‐scale oxidation test method to quantify the time needed for the ester base to produce enough free radicals in order to propagate the mechanism of oxidation. Koval'skii et al 17 researched the thermal stability of mineral and partly synthetic motor oils with direct photometric measurement method. The limit temperature of performing ability of motor oils can be determined from the dependencies of the coefficient of luminous flux absorption.…”

Section: Introductionmentioning

confidence: 99%

Study on comprehensive degradation stability of special and nonspecific motor oils

Wei

Chen

Sun

et al. 2020

Lubrication Science

View full text Add to dashboard Cite

In order to study the degradation characteristics of special and nonspecific motor oil, two experimental vehicles carried out eight road tests with four types of oils, which two types of oils were special oils for its engines recommended by OEM (original equipment manufacturer) and the other two types of nonspecific oil were bought from market. Total acid number, oxidation stability, oxidation, nitration and sulfation values of experimental oils were analysed. The interpolation method and Euclidean distance were used to evaluate the similarity of change curves of oil properties. The results show that the oxidation onset temperature had good similarity both in special oils and nonspecific oils. The sulfation value of nonspecific oils had highest change rate of Euclidean distance. The change rate of Euclidean distance of two special oils were less than 8.48%, which had more stability than that of the nonspecific oils. This work can serve as a reference for end users to select motor oils and oil developers to improve the oil stability.

show abstract

Monitoring of aging processes in motor oils by changing their optical properties

Kovalsky

Верещагин

Шрам

et al. 2019

Zavod. lab., Diagn. mater.

View full text Add to dashboard Cite

Photometric Monitoring of Thermal Stability of Motor Oils and Effect of Thermal Degradation Products on Antiwear Properties

Cited by 3 publications

References 0 publications

Synthesis of S,p,n-Containing Organic Compounds and Their Thermostability With Respect to Metals

Synthesis of S,p,n-Containing Organic Compounds and Their Thermostability With Respect to Metals

Study on comprehensive degradation stability of special and nonspecific motor oils

Monitoring of aging processes in motor oils by changing their optical properties

Contact Info

Product

Resources

About