Tribology of Nanocomposites 2024

A special issue of Lubricants (ISSN 2075-4442).

Deadline for manuscript submissions: 15 December 2024 | Viewed by 746

Special Issue Editor


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Guest Editor
Department of Physics and Astronomy, University of Sussex, Brighton BN1 9RH, UK
Interests: tribology at nanoscale; flexible electronics; nanocomposites; straintronics; 2D materials; corrosion
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Special Issue Information

Dear Colleagues,

Polymeric nanocomposites play a crucial role in the range of industrial components in biocompatible devices as a substitute for metallic parts. Nevertheless, as an input of mechanical components such as gears and bearings, these nanocomposites usually go through severe conditions of heavy loads, sliding, friction and wear. These conditions are critical for biocompatible materials such as medicinal implants, where the mechanical performance and tribological behaviour are crucial for understanding the causes of catastrophic failures. Several nanoparticles, one-dimensional and two-dimensional materials, are used as fillers in the polymeric matrix to exhibit remarkable properties for controlling friction wear and inducing desirable lubrication. In the present issue, we welcome experimental results, modelling, simulations, analytical results and review articles emphasising filler content, composite modification for wear resistance, and controlled energy dissipation during sliding conditions. The current Special Issue will focus on advancing nanocomposites and their tribological behaviour under extreme conditions of temperature, loads, chemicals, ionics, and electronics. The Special Issues’ outcomes and references will be useful for the academic community and industries.

The topics of interest in the Special Issue include, but are not limited to, the following: 

  • Advancement in nanocomposites for improved tribological behaviour.
  • Techniques for tribological measurements.
  • Machine learning for the diagnostics of friction, wear, and lubrication.

Dr. Manoj Tripathi
Guest Editor

Manuscript Submission Information

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Keywords

  • advancement in nanocomposites for improved tribological behaviour
  • techniques for tribological measurements
  • machine learning for the diagnostics of friction, wear, and lubrication

Published Papers (1 paper)

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Research

13 pages, 34331 KiB  
Article
Effect of Nano-CuO and 2-Mercaptobenzothiazole on the Tribological Properties of Ultra-High Molecular Weight Polyethylene
by Andrey P. Vasilev, Afanasiy A. Dyakonov, Sakhayana N. Danilova, Igor S. Makarov, Anastasia V. Okoneshnikova and Aitalina A. Okhlopkova
Lubricants 2024, 12(5), 174; https://doi.org/10.3390/lubricants12050174 - 12 May 2024
Viewed by 583
Abstract
In this study, the tribological properties of nanocomposites based on ultra-high molecular weight polyethylene (UHMWPE) filled with nano-CuO and 2-mercaptobenzothiazole (CuO/MBT) in mass ratios of 1:1 and 2:1 were investigated. In the supramolecular structure of UHMWPE nanocomposites, spherulites of several hundred micrometers in [...] Read more.
In this study, the tribological properties of nanocomposites based on ultra-high molecular weight polyethylene (UHMWPE) filled with nano-CuO and 2-mercaptobenzothiazole (CuO/MBT) in mass ratios of 1:1 and 2:1 were investigated. In the supramolecular structure of UHMWPE nanocomposites, spherulites of several hundred micrometers in size are formed. The density of UHMWPE nanocomposites slightly increases relative to the pure polymer, reaching a maximum at 2 wt.% CuO/MBT in both ratios. The Shore D hardness and compressive stress of the UHMWPE nanocomposites showed an improvement of 5–6% and 23–35%, respectively. The wear resistance and coefficient of friction of UHMWPE nanocomposites were tested using a pin-on-disk configuration under dry friction conditions on #45 steel and on P320 sandpaper. It was shown that the wear rate of UHMWPE nanocomposites filled with 2 wt.% CuO/MBT decreased by ~3.2 times compared to the pure polymer, and the coefficient of friction remained at the level of the polymer matrix. Abrasive wear showed an improvement in UHMWPE nanocomposites filled with 1 wt.% CuO/MBT compared to the polymer matrix and other samples. The worn surfaces of the polymer composites after dry friction were examined by scanning electron microscopy and IR spectroscopy. The formation of secondary structures in the form of tribofilms that protect the material from wear was demonstrated. Due to this, the wear mechanism of UHMWPE nanocomposites is transformed from adhesive to fatigue wear. The developed materials, due to improved mechanical and tribological properties, can be used as parts in friction units of machines and equipment. Full article
(This article belongs to the Special Issue Tribology of Nanocomposites 2024)
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