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Rheological and Tribological Properties of Lubricating Greases Based on Esters and Polyurea Thickeners

Maksimova, Yu. M. / Shakhmatova, A. S. / Ilyin, S. O. / Pakhmanova, O. A. / Lyadov, A. S. / Antonov, S. V. / Parenago, O. P.

Abstract Lubricating greases based on pentaerythritol and trimethylolpropane esters and dioctyl sebacate have been synthesized using diureas as a thickener prepared by reactions of toluene diisocyanate, aniline, and primary aliphatic amines of various structures. The physicochemical properties of the greases, such as ultimate strength, yield stress, modulus of elasticity, dropping point, and colloid stability, have been characterized, and data on their antiwear activity have been obtained. The relationship between the structure of grease components, its rheology, and antiwear properties has been revealed.

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Rheological and Tribological Properties of Lubricating Greases Based on Esters and Polyurea Thickeners

Maksimova, Yu. M. / Shakhmatova, A. S. / Ilyin, S. O. / Pakhmanova, O. A. / Lyadov, A. S. / Antonov, S. V. / Parenago, O. P.

Abstract Lubricating greases based on pentaerythritol and trimethylolpropane esters and dioctyl sebacate have been synthesized using diureas as a thickener prepared by reactions of toluene diisocyanate, aniline, and primary aliphatic amines of various structures. The physicochemical properties of the greases, such as ultimate strength, yield stress, modulus of elasticity, dropping point, and colloid stability, have been characterized, and data on their antiwear activity have been obtained. The relationship between the structure of grease components, its rheology, and antiwear properties has been revealed.

Rheological and Tribological Properties of Lubricating Greases Based on Esters and Polyurea Thickeners

Maksimova, Yu. M. / Shakhmatova, A. S. / Ilyin, S. O. / Pakhmanova, O. A. / Lyadov, A. S. / Antonov, S. V. / Parenago, O. P.

Abstract Lubricating greases based on pentaerythritol and trimethylolpropane esters and dioctyl sebacate have been synthesized using diureas as a thickener prepared by reactions of toluene diisocyanate, aniline, and primary aliphatic amines of various structures. The physicochemical properties of the greases, such as ultimate strength, yield stress, modulus of elasticity, dropping point, and colloid stability, have been characterized, and data on their antiwear activity have been obtained. The relationship between the structure of grease components, its rheology, and antiwear properties has been revealed.

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Title:

Rheological and Tribological Properties of Lubricating Greases Based on Esters and Polyurea Thickeners

Contributors:

Maksimova, Yu. M. (author) / Shakhmatova, A. S. (author) / Ilyin, S. O. (author) / Pakhmanova, O. A. (author) / Lyadov, A. S. (author) / Antonov, S. V. (author) / Parenago, O. P. (author)

Published in:

Petroleum Chemistry ; 58 ; 1064-1069

Publication date:

2018-12-01

Size:

6 pages

ISSN:

1555-6239 , 0965-5441

DOI:

https://doi.org/10.1134/S0965544118120071

Type of media:

Article (Journal)

Type of material:

Electronic Resource

Language:

English

Keywords:

lubricating greases , esters , diureas , rheology , tensile strength , colloid stability , dropping point , wear scar diameter Chemistry , Industrial Chemistry/Chemical Engineering

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