Influence of plasma pre-treatment of polytetrafluoroethylene (PTFE) micropowders on the mechanical and tribological performance of Polyethersulfone (PESU)–PTFE composites

Hunke, Harald; Soin, Navneet; Shah, Tahir; Kramer, Erich; Witan, Kurt; Σιώρης, Ηλίας

doi:10.1016/j.wear.2015.03.004

Cited by 38 publications

(44 citation statements)

References 35 publications

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“…The most common analytical methods to characterize plasma‐treated polymer powders are summarized in Table . X‐ray photoelectron spectroscopy (XPS) is widely used to analyze the powder's atomic surface composition and enables the identification of introduced functional groups . Fourier‐transform infrared spectroscopy (FTIR) and attenuated total reflectance infrared spectroscopy (ATR‐IR) are used to probe samples up to a depth of about 4–5 μm .…”

Section: Analytical Methods For Characterization Of Plasma‐treated Pomentioning

confidence: 99%

“…Time of flight secondary ion mass spectroscopy (TOF‐SIMS) is utilized to evaluate the uniformity of plasma‐deposited polymer coatings by detecting sputtered ions and fragments. Scanning electron microscopy (SEM) is used to analyze the surface morphology of the particles and coating effects. Atomic force microscopy (AFM) enables the quantification of the surface roughness on the surface.…”

Section: Analytical Methods For Characterization Of Plasma‐treated Pomentioning

confidence: 99%

“…In the electronics industry, plasma‐treated polymer powders may find application as binder additives for electrode materials in batteries due to higher dispersibility in solvent, or as toners in electro photographic systems thanks to optimized triboelectric charging …”

Section: Applicationsmentioning

confidence: 99%

“…The plasma excitation is typically established by RF power coupling mechanisms, including inductive coupling with external copper coils, capacitive coupling with external half‐shell copper electrodes, inner center electrode, hexagonal barrel, or two adjustable outer copper electrodes . Other systems combined RF coupling with MW, pure MW coupling by means of a surface guide in a quartz tube, LF 40 KHz coupling, or LF combined with MW as implemented in the commercial “Nano” type plasma equipment of Diener Electronics GmbH…”

Section: Studies On Low‐pressure Plasma Reactorsmentioning

confidence: 99%

“…The unique feature of a plasma drum reactor is a rotating cylinder, usually made of Pyrex glass or metal, with a volume of about 0.1–10 L. The rotating speed was typically adjusted between 50 and 660 rpm for agitating and intimate mixing of the particles and exposing their surface to the plasma. The treated polymer powder batches ranged from a few g, to 25 to 200 g, and up to 3 to 25 kg in a larger scale . The treatment times could be varied in the orders of seconds, minutes, an hour, or even several hours .…”

Section: Studies On Low‐pressure Plasma Reactorsmentioning

confidence: 99%

See 4 more Smart Citations

Plasma treatment of polymer powders – from laboratory research to industrial application

Arpagaus

Oberbossel

Rohr

2018

Plasma Processes & Polymers

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This review provides a comprehensive overview of scientific research on plasma treatment of polymer powders over the last 40 years. The current state of the art is described with special focus on basic research in the laboratory and commercially available technologies in industrial applications. Different reactor systems with low‐pressure and atmospheric pressure plasma are presented. Then, numerous application examples of plasma‐treated polymer powders are presented together with a brief overview of the experimental test results. Furthermore, the effects of the process parameters on the final properties of the polymer powders are discussed. Attempts are made to determine similarity parameters and correlations between the generated surface functionalities. Finally, some suggestions for future research are given.

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Section: Analytical Methods For Characterization Of Plasma‐treated Pomentioning

confidence: 99%

Section: Analytical Methods For Characterization Of Plasma‐treated Pomentioning

confidence: 99%

Section: Applicationsmentioning

confidence: 99%

Section: Studies On Low‐pressure Plasma Reactorsmentioning

confidence: 99%

Section: Studies On Low‐pressure Plasma Reactorsmentioning

confidence: 99%

See 3 more Smart Citations

Plasma treatment of polymer powders – from laboratory research to industrial application

Arpagaus

Oberbossel

Rohr

2018

Plasma Processes & Polymers

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Improving the tribological performance of polyphenylene sulfide by incorporating irradiation treated polytetrafluoroethylene powders

Mei

Peng

et al. 2023

J of Applied Polymer Sci

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In this work, the efficacy of using irradiation treated polytetrafluoroethylene (i.e., i-PTFE) powders on the tribological properties of polyphenylene sulfide (PPS)-based composites was systematically investigated. The results showed that the addition of i-PTFE powders significantly improved the friction and wear properties of PPS. The average friction coefficient and specific wear rate of PPS/i-PTFE 20 wt% composite reached 0.129 and 1.75 Â 10 À5 mm 3 N À1 m À1 , which were 77.4% and 99.5% lower than those of pure PPS, respectively. SEM observations indicated that the i-PTFE powders exhibited a relatively uniform distribution within PPS, which favored the formation of intact, uniform and continuous transfer film on the surface of friction pair, thereby resulting in a significant improvement of tribological properties for PPS/i-PTFE composites. The worn surface of the testing specimen turned smoother and the wear debris became smaller with increasing addition of i-PTFE powders, which was related to the improvement of tribological performance by forming transfer film at the sliding interface. This work provided a strategy to fabricate high performance self-lubricating polymer composites that demonstrate potential applications in engineering sectors.

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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.

show abstract

Influence of plasma pre-treatment of polytetrafluoroethylene (PTFE) micropowders on the mechanical and tribological performance of Polyethersulfone (PESU)–PTFE composites

Cited by 38 publications

References 35 publications

Plasma treatment of polymer powders – from laboratory research to industrial application

Plasma treatment of polymer powders – from laboratory research to industrial application

Improving the tribological performance of polyphenylene sulfide by incorporating irradiation treated polytetrafluoroethylene powders

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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