Plasma modified Polytetrafluoroethylene (PTFE) lubrication of α-olefin-copolymer impact-modified Polyamide 66

Hunke, Harald; Soin, Navneet; Gebhard, Andreas; Shah, Tahir; Kramer, Erich; Witan, Kurt; Narasimulu, Anand Arcot; Σιώρης, Ηλίας

doi:10.1016/j.wear.2015.06.003

Cited by 15 publications

(11 citation statements)

References 42 publications

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“…In recent years, the use of plasma treatment of polymers for modification of their surface properties has been studied as an environmentally friendly alternative to the wet chemical techniques [1,11,15,18]. This kind of surface modification has many advantages, including modification of just the outermost atomic layers of the substrate, reduction of thermal degradation and modification without affecting the bulk properties of the polymer [18][19][20][21]. Plasma surface modification is used to create new chemical groups on their surface, branching and cross linking of macromolecules and formation of low molecular weight oxidized structures [2,11,12,15,19,22].…”

Section: Introductionmentioning

confidence: 99%

Influence of plasma treatment on wettability and scratch resistance of Ag-coated polymer substrates

Wojcieszak

Poniedziałek

Mazur

et al. 2016

Materials Science-Poland

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Rapid progress in thin-film coatings based on metals, which can be deposited on polymers, has been recently observed. In this work discussion on the properties of modified polymers and silver thin films deposited on polytetrafluoroethylene (PTFE) and polycarbonate (PC) substrates has been presented. Surface of these polymer substrates were exposed to argon plasma discharge. Additionally, silver thin films were deposited on their surface by electron beam evaporation method. The surfaces of the modified polymers were studied by different methods, i.e. topography, wettability and scratch resistance measurements were performed. The ageing effect of treated substrates was also discussed. It was shown that plasma modification of PTFE and PC substrates increased wettability of their surfaces. The value of water contact angle decreased of about 40 % and 25 % for PTFE and PC surface, respectively. The change of hydrophobic to hydrophilic properties was observed. Plasma modification of substrates improved adhesion between silver coating and polymer substrates. However, it did not influence wettability of Ag coating.

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Section: Introductionmentioning

confidence: 99%

Influence of plasma treatment on wettability and scratch resistance of Ag-coated polymer substrates

Wojcieszak

Poniedziałek

Mazur

et al. 2016

Materials Science-Poland

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“…From this point onward, the governing wear mechanism, as well as the wear rate of the specimen is dictated by the retention ability of the TL. Nevertheless, it is worth indicating that additional tribo-fillers in the neat polymers do not always yield positive effect on TL formation, as presented by Bahadur et al [15]. The beneficial effects of tribo-fillers are normally associated with the improved adhesion of the transfer layer on the counter surface, depending on fillers' compatibility and chemical nature.…”

Section: Wear Mechanism In the "Steady State" Of Sliding Wearmentioning

confidence: 94%

“…The effect of nanofillers on enhanced TFL generation is generally considered to be more effective than that of micro/macrofiller, as established in the literature [15,[32][33][34]47,48]. This was commonly attributed to the higher surface-to-volume ratio of nanofillers, which provides the more interfacial areas at the same volume fractions compared to microfiller-incorporated blends.…”

Section: Transfer Layersmentioning

confidence: 99%

“…A number of publications are available in literature regarding the tribological behavior of HPPs sliding under both dry and wet conditions [5][6][7][8][14][15][16][17][18][19][20][21]71]. Polymers are widely used under dry sliding conditions, thanks to their self-lubricating behavior.…”

Section: Lubricated Conditions On Friction and Wearmentioning

confidence: 99%

“…For instance, polytetrafluoroethylene (PTFE) is often employed as a solid lubricant to improve the friction performance, but it does not have an effect on improving (reinforcing) the mechanical properties. Towards that, Hunke et al [14,15] recently indicated the benefits of surface functionalized PTFE powders for better reinforcement capabilities in HPPs. Also, the philosophy of incorporating fillers in the polymer matrix resembles that of metal matrix filled with inorganic oxide/carbide/nitride particles [16].…”

Section: Introductionmentioning

confidence: 99%

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Recent Advances in High Performance Polymers—Tribological Aspects

Kurdi

Chang

2018

Lubricants

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High-performance polymer (HPP)-based engineering materials in tribological applications have been under continuous research over the last few decades. This paper reviewed the recent studies on the sliding wear properties of HPPs and their nanocomposites, which are associated with the intrinsic and extrinsic parameters. In particular, the effects of the intrinsic properties of polymer composites (e.g., mechanical properties of the materials and the types of fillers) and external environmental conditions (e.g., service temperature and lubrication medium) on the formation of transfer layers (TLs) were discussed. The latter would govern the overall friction and wear of polymeric materials in sliding against metallic counterparts. In addition, correlations between the basic mechanical properties of HPPs and their sliding wear behavior were also explored.

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Comparative study on the tribological properties of poly(arylene ether nitrile)/polytetrafluoroethylene composites: The influence of filler size and testing conditions

Ding,

Peng,

et al. 2023

J of Applied Polymer Sci

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In this work, the influence of polytetrafluoroethylene (PTFE) filler size and testing conditions (i.e., air, water, and lubricating oil) on the tribological properties of poly(arylene ether nitrile) (PEN) was systematically investigated. The results showed that the addition of PTFE was beneficial to improve the tribological properties of PEN‐based composites which was related to the easier formation of transfer film on the surface of friction pair. Samples which were tested in water demonstrated a relatively higher friction coefficient (μ) and wear loss when compared with those tested in dry air and lubricating oil scenarios, which was attributed to the fact that friction induced heat and wear debris could be timely removed by water. In addition, the infiltration of water further reduced the interaction between PTFE filler and PEN, which aggravated the wear loss of sample blocks. When tested in lubricating oil, pure PEN showed the lowest wear loss when compared with that of PEN/PTFE composites. At a given content (20 wt%) of PTFE fillers, PEN/PTFE1.5μm exhibited the lowest μ in lubricating oil whereas PEN/PTFE5μm demonstrated the lowest specific wear loss in air condition (1.18 × 10−6 mm3/N·m). This work provided some useful information for the design and application of PTFE‐containing polymer composites that can be targeted in different lubrication scenarios in industrial fields.

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Plasma modified Polytetrafluoroethylene (PTFE) lubrication of α-olefin-copolymer impact-modified Polyamide 66

Cited by 15 publications

References 42 publications

Influence of plasma treatment on wettability and scratch resistance of Ag-coated polymer substrates

Influence of plasma treatment on wettability and scratch resistance of Ag-coated polymer substrates

Recent Advances in High Performance Polymers—Tribological Aspects

Comparative study on the tribological properties of poly(arylene ether nitrile)/polytetrafluoroethylene composites: The influence of filler size and testing conditions

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