Tribological Performance of Polymer Composites
Summary
The tribological performance of polymer composites encompasses their frictional behaviour, wear resistance and lubrication mechanisms when subjected to sliding or rolling contact. Advances in polymer science have enabled the design of composites that combine a polymeric matrix with tailored fillers or fibres to achieve low coefficients of friction, high load-bearing capacity and long service life. Key factors influencing performance include the nature and dispersion of solid lubricants or nanofillers, the formation and stability of transfer films on counterfaces, the interaction between surface chemistry and contact temperature, and the environmental conditions such as humidity or corrosive media. Recent work has shown that hybrid reinforcement strategies, microencapsulation of liquid lubricants, and surface treatments can synergistically improve both static mechanical strength and dynamic wear resistance. These developments underpin applications in automotive braking systems, aerospace bearings, marine seals and biomedical implants, where durability, energy efficiency and reduced maintenance are critical. Computational modelling and in-situ characterisation techniques now allow a more predictive understanding of how microstructure and operating parameters govern friction and material loss, guiding the rational design of next-generation self-lubricating and wear-resistant polymer composites.
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Tribological Performance of Polymer Composites publication trend
The graph below shows the total number of articles in tribological performance of polymer composites across all publications each year (not limited to Nature Index journals).
Technical terms
Tribology: The science of friction, wear and lubrication at contacting surfaces.
Polymer composite: A material composed of a polymer matrix combined with reinforcing fillers, fibres or particles to enhance mechanical and tribological properties.
Coefficient of friction: A dimensionless parameter expressing the ratio of tangential force resisting motion to the normal load at an interface.
Wear rate: A measure of material loss per unit load and sliding distance, typically expressed in mm³·N⁻¹·m⁻¹.
Transfer film: A thin layer of polymer or filler material that adheres to the counterface and influences friction and wear behaviour.
Nanofiller: A nanoscale inorganic or hybrid particle added to a polymer to improve interfacial strength, thermal stability and tribological performance.
References
- A Review of Transfer Films and Their Role in Ultra-Low-Wear Sliding of Polymers. Lubricants (2016).
- The influence of surface properties on sliding contact temperature and friction for polyetheretherketone (PEEK). Polymer (2016).
- Effect of Nanofillers on Tribological Properties of Polymer Nanocomposites: A Review on Recent Development. Polymers (2021).
- Ultralow friction polymer composites incorporated with monodispersed oil microcapsules. Friction (2019).
- Effect of humidity and counterface material on the friction and wear of carbon fiber reinforced PTFE composites. Tribology International (2021).
- Tribological behaviour and transfer layer development of self-lubricating polymer composite bearing materials under long duration dry sliding against stainless steel. Wear (2021).
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