Tribological properties of hydrogenated nitrile rubber in confrontation with hard particles under different axial loads

The influence of different axial loads on the tribological properties of Hydrogenated Nitrile Rubber (HNBR) under oil-based mud containing hard particles is studied through experimental and theoretical approaches. Friction and wear tests were performed by using pin-on-disc friction pairs. The findin...

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Bibliographic Details
Published in:Tribology international 2021-01, Vol.153, p.106649, Article 106649
Main Authors: Zuo, Rundong, Wang, Guorong, Hu, Gang, Zhao, Shiping, Wei, Gang
Format: Article
Language:English
Subjects:
Abrasive wear
Axial loads
Coefficient of friction
Friction
Hydrogenation
Hysteresis
Load effect
Mechanical properties
Nitrile rubber
Polymer
Sliding friction
Tribology
Wear
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Summary:The influence of different axial loads on the tribological properties of Hydrogenated Nitrile Rubber (HNBR) under oil-based mud containing hard particles is studied through experimental and theoretical approaches. Friction and wear tests were performed by using pin-on-disc friction pairs. The findings indicate that the tribological properties of HNBR vary with axial load and wear time. The total friction coefficient can be divided into an adhesion term, a hysteresis term and an abrasive term through the analysis of tribological mechanism. The hysteresis term is due to micro-strain on the HNBR surface and overall deformation of the HNBR specimen. The variation of tribological properties can be well explained through the above theory and the hysteresis term is the main influence factor. •The tribological mechanisms of HNBR under different axial loads were studied.•The energy loss includes an adhesion term, a hysteresis term, and an abrasive term.•With the rise of the axial load, the adhesion loss and the abrasive loss increase.•With the rise of the axial load, the micro-strain hysteresis loss decreases.•With the test time increases, the overall deformation hysteresis loss decreases.
ISSN:0301-679X
1879-2464
DOI:10.1016/j.triboint.2020.106649