Tribology of Self-Lubricating Polymer Nanocomposites

Sorrentino, Andrea

doi:10.1007/978-3-662-56528-5_4

Cited by 5 publications

(3 citation statements)

References 190 publications

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“…The research in this field focuses on four main influencing factors on the wear behaviour of polymer-metal tribological systems: material modifications of the polymer, e.g. with fibres (Friedrich et al, 1993;Sathishkumar et al, 2014), lubricants (Yao et al, 2003), or nanoparticles (Sorrentino, 2018); process induced microstructure of the polymer (Künkel & Ehrenstein, 2003;Fischer et al, 2014); load conditions (Faatz, 2002;Feulner, 2008); and geometry of the contact partners (Briscoe, 1981). Much research has been done on the influence of the contact geometry on wear behaviour on a microscopic scale, based largely on Briscoe's work (1981).…”

Section: Influences On the Wear Behaviour Of Metal-polymer Tribological Systemsmentioning

confidence: 99%

New Approach on the Allocation of Wear Allowances - A Case Study

Schubert

Rohrmoser

Hertle

et al. 2019

Proc. Int. Conf. Eng. Des.

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To maintain functional tolerances of gear sets over their lifetime, especially in polymer-seel gear sets, the wear behaviour must be considered. The state of the art in wear modelling does not take the run-in behaviour of polymer-metal contacts into account. This results in oversizing of wear allowances in the stationary wear phase and undersizing in the run-in phase. Therefore, a modified wear model is presented in this paper. With this method the issues of over- and undersizing can be eliminated.The method is then applied in a case study to show two things. Firstly, using the presented method the calculated necessary wear allowances were reduced by 30%. Secondly, the effect of surface structures on the wear behaviour was investigated. It is shown that the run-in process is not dependent on roughness in sliding direction, but on overall contact area. Thus, the state of the art, i.e. tolerating only the roughness in sliding direction, is insufficient. Considering the process-induced surface topology during design of gear sets can decrease run-in wear. Together with the optimised wear model, this allows wider manufacturing tolerances and thus lower costs during production.

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Section: Influences On the Wear Behaviour Of Metal-polymer Tribological Systemsmentioning

confidence: 99%

New Approach on the Allocation of Wear Allowances - A Case Study

Schubert

Rohrmoser

Hertle

et al. 2019

Proc. Int. Conf. Eng. Des.

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show abstract

“…There are four main research topics regarding influencing factors on the behaviour of polymer-metal contacts: The first and most researched topic is the modification of polymers to improve wear resistance in general, e.g. with fibres [12], incorporated lubricants [13], or nanoparticles [14]. Secondly, it has been found that optimising morphological properties of the polymer, for example by inducing high degrees of crystallinity or orientations, can improve the wear behaviour of macroscaled [15] and microscaled parts [16].…”

Section: Wear Behavior Of Metal-polymer Tribological Systemsmentioning

confidence: 99%

Functional Tolerance Design: Effect of Surface Structure on Run-in Wear in Steel-Polyamide Gear Sets

Schubert¹

2019

Zeitschrift Kunststofftechnik

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To maintain functionality of gear sets over their lifetime, the occurring wear and temperature development must be considered. Surface structure is one of the most important factors on the run-in behavior. In this paper, the effects of different process-induced surface structures of steel pinions on the thermal and tribological run-in behavior of a steel-polyamide gear set is investigated. It is shown, that the run-in process is not sufficiently described using only the roughness in sliding direction. Overall contact area determines the resulting thermal and wear processes and has to be taken into account. Thus, considering the process-induced surface topology during design of gear sets can decrease run-in wear and temperature development. This allows wider manufacturing tolerances and thus lower costs during production. Effekt der Oberflächenstruktur auf das Einlaufverschleißverhalten von Stahl-Polyamid-Getrieben Um die Funktionalität von Getrieben über die Lebensdauer zu gewährleisten, muss der auftretende Verschleiß und die Temperaturentwicklung berücksichtigt werden. Die Oberflächenstruktur ist einer der wichtigsten Faktoren für das Einlaufverhalten. In diesem Beitrag werden die Auswirkungen verschiedener prozessbedingter Oberflächenstrukturen von Stahlritzeln auf das thermische und tribologische Einlaufverhalten eines Stahl-Polyamid-Getriebes untersucht. Es wird gezeigt, dass der Einlaufprozess allein durch die Rauheit in Gleitrichtung nicht ausreichend beschrieben wird. Die Gesamtkontaktfläche bestimmt die resultierenden thermischen Vorgänge und Verschleißprozesse und muss berücksichtigt werden. So kann die Berücksichtigung der prozessbedingten Oberflächentopologie bei der Konstruktion von Radsätzen den Einlaufverschleiß und die Temperaturentwicklung verringern. Dies ermöglicht größere Fertigungstoleranzen und damit niedrigere Kosten in der Produktion.

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“…To the authors’ knowledge, there are only a few review papers found on tribological properties of polymer nanocomposites. Studies on tribological behavior of polymer nanocomposites up to the year 2017 were reviewed [ 27 , 28 ]. Later, review papers on tribological properties of polymer nanocomposites were limited to epoxy-, polyurethane-based nanocomposites coatings [ 29 ] and poly(ether ketone) nanocomposites [ 30 ].…”

Section: Introductionmentioning

confidence: 99%

Effect of Nanofillers on Tribological Properties of Polymer Nanocomposites: A Review on Recent Development

et al. 2021

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Polymer nanocomposites with enhanced performances are becoming a trend in the current research field, overcoming the limitations of bulk polymer and meeting the demands of market and society in tribological applications. Polytetrafluoroethylene, poly(ether ether ketone) and ultrahigh molecular weight polyethylene are the most popular polymers in recent research on tribology. Current work comprehensively reviews recent advancements of polymer nanocomposites in tribology. The influence of different types of nanofiller, such as carbon-based nanofiller, silicon-based nanofiller, metal oxide nanofiller and hybrid nanofiller, on the tribological performance of thermoplastic and thermoset nanocomposites is discussed. Since the tribological properties of polymer nanocomposites are not intrinsic but are dependent on sliding conditions, direct comparison between different types of nanofiller or the same nanofiller of different morphologies and structures is not feasible. Friction and wear rate are normalized to indicate relative improvement by different fillers. Emphasis is given to the effect of nanofiller content and surface modification of nanofillers on friction, wear resistance, wear mechanism and transfer film formation of its nanocomposites. Limitations from the previous works are addressed and future research on tribology of polymer nanocomposites is proposed.

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Tribology of Self-Lubricating Polymer Nanocomposites

Cited by 5 publications

References 190 publications

New Approach on the Allocation of Wear Allowances - A Case Study

New Approach on the Allocation of Wear Allowances - A Case Study

Functional Tolerance Design: Effect of Surface Structure on Run-in Wear in Steel-Polyamide Gear Sets

Effect of Nanofillers on Tribological Properties of Polymer Nanocomposites: A Review on Recent Development

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