Wear and friction of aramid fiber and polytetrafluoroethylene filled composites

Bolvari, Anne; Glenn, Sherry; Janssen, Rob; Ellis, Chris

doi:10.1016/s0043-1648(96)07446-7

Cited by 64 publications

(34 citation statements)

References 4 publications

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“…The experimental aspects related to the voids and/or pores which strongly affect the mechanical properties of brittle materials such as thermoset polymer like the epoxy resin used here are mainly responsible for the deterioration in the mechanical properties. This phenomenon of reduction in mechanical properties of polymer composites with addition of solid lubricant was also noticed by earlier researchers [7,8,16]. Further investigation is, however, warranted to verify the lubricant effects on mechanical properties at lower loadings.…”

Section: Flexural Propertiessupporting

confidence: 81%

Mechanical and Abrasive Wear Behavior of Metal Sulphide Lubricant Filled Epoxy Composites

Sudheer¹,

Madhyastha²,

Amanna³

et al. 2013

ISRN Polymer Science

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The present work reveals the effect of the addition of commercial MoS 2 (10 wt%) particles on mechanical and two-body abrasive wear behavior of epoxy with/without glass fiber mat reinforcement. The composites were fabricated using casting and simple hand lay-up techniques followed by compression molding. The mechanical properties such as density, hardness, tensile, and flexural properties were determined as per ASTM standards. The abrasive wear testing was carried out using pin-on-disc wear tester for different loads and abrading distances at constant speed of 1 m/s. A significant reduction in wear loss and specific wear rate was noticed after the incorporation of MoS 2 filler allowing less wear of matrix during abrasion which in turn facilitated lower fiber damage. However the incorporation of MoS 2 particles had a detrimental effect on most of the mechanical properties of the composites. The worn surface features were investigated through scanning electron microscopy (SEM) in order to investigate the wear mechanisms.

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Section: Flexural Propertiessupporting

confidence: 81%

Mechanical and Abrasive Wear Behavior of Metal Sulphide Lubricant Filled Epoxy Composites

Sudheer¹,

Madhyastha²,

Amanna³

et al. 2013

ISRN Polymer Science

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“…The increase of the specific wear rate under higher Aramid particle content is believed to be due to the poor adhesion between the filler and the matrix, which may make the particle easily pulled out during sliding, serving as abrasive particles. This point was reported on the Aramid fiber filled polyamide 66 composites [6].…”

Section: Wear Testssupporting

confidence: 59%

Development of Tribologically Optimized Surface Coatings with Micro and Nano Particles

Xian

Walter

Haupert³

2004

Materialwissenschaft Werkst

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This paper is focused on the tribological behaviour of epoxybased coatings applied to metal substrates. Aramid particles, nanometer-sized Titanium dioxide (TiO 2 ), graphite and Polytetrafluoroethylene (PTFE) served as filler materials. Under sliding conditions, incorporation of Aramid particles to the graphite and TiO 2 filled composites improved the wear resistance significantly, but it slightly increased the coefficient of friction (cof). Under fretting wear conditions, 10 vol.% Aramid particles filled composite showed the lowest wear rate and cof. To further improve the wear performance, PTFE (2 -6 vol.%) was introduced to the above-optimized composition (10 vol.% Aramid particles, graphite and TiO 2 ). However, both the sliding and fretting wear resistance was impaired, and cof was increased. Deterioration of the mechanical properties and the friction films were attributed to the unusual trend. Finally, the optimal composition for epoxy-based coatings was determined as 10 vol.% Aramid particles together with graphite and nano-TiO 2 filled composite.Keywords: Aramid, epoxy, nanocomposite, wear and friction, sliding, fretting Im Rahmen dieser Arbeit wird das tribologische Verhalten von polymeren Gleitschichten auf Epoxidharzbasis, welche mit Aramidpartikeln, nanoskaligem Titandioxid (TiO 2 ), Graphit und Polytetrafluorethylen (PTFE) gefüllt sind, näher betrachtet. Unter Gleitverschleißbedingungen wird die Verschleißfestigkeit von graphitund TiO 2 -gefüllten Verbunden durch die Zugabe von Aramidpartikeln weiter verbessert, während sich allerdings der Reibungskoeffizient leicht erhöht. Unter Schwingverschleißbedingungen zeigte der mit 10 vol.% Aramid gefüllte Verbund den günstigsten Reibungskoeffizienten und die niedrigste Verschleißrate. Um die tribologischen Eigenschaften weiter zu verbessern, wurde diesem Verbund dann nochmals 2-6 vol.% PTFE zugemischt. In diesem Falle kam es jedoch zu einer Verschlechterung, sowohl des Gleitverschleiß-als auch des Schwingverschleißverhaltens. Der Grund hierfür lag in der Herabsetzung der mechanischen Werkstoffeigenschaften. Die im Rahmen dieser Arbeit optimale Zusammensetzung der Gleitschicht war, in Kombination mit Graphit und nanoskaligem TiO 2 , ein mit 10 vol.% aramidpartikelgefüllter Epoxydharz.

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“…As noted by Bolvari 20 , the wear resistance of the nylon 6.6 matrix composites reinforced with 5 to 15% aramid exhibit good wear resistance. However, further increasing the amount of aramid causes an increase in wear rate due to the fibrous debris generated, resulting from the poor adhesion of aramid fibers to the matrix 20 . Furthermore, one of the limitations of composites with aramid fiber is their low compressive strength, which may have contributed to a lower wear resistance here 21 .…”

Section: Determination Of Wear Resistencementioning

confidence: 99%

Study on friction and wear behavior of SAE 1045 steel, reinforced nylon 6.6 and NBR rubber used in clutch disks

et al. 2014

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The friction and wear properties of AISI 1045 steel, nylon 6.6 composites with different types and percentages of reinforcement and a nitrile rubber, Alpha 66, were submitted to sliding wear tests. The five types of nylon 6.6 composites tested generated matching, low values for the coefficient of friction. This may be due to the greater influence of the nylon 6.6 matrix on the coefficient of friction. However, the wear in nylon composites showed wide variation, determined by the type of reinforcement added to the composite. The other two materials tested, nitrile rubber and 1045 steel, showed behavior different from that of the composites. The NBR (signifying a norm established by the Brazilian Association of Technical Norms) rubber showed a superior coefficient of friction and greater wear. On the other hand, the steel showed a high coefficient of friction and low wear, suggesting that the coefficient of friction has no direct connection to the wear resistance of the materials studied here.

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Wear and friction of aramid fiber and polytetrafluoroethylene filled composites

Cited by 64 publications

References 4 publications

Mechanical and Abrasive Wear Behavior of Metal Sulphide Lubricant Filled Epoxy Composites

Mechanical and Abrasive Wear Behavior of Metal Sulphide Lubricant Filled Epoxy Composites

Development of Tribologically Optimized Surface Coatings with Micro and Nano Particles

Study on friction and wear behavior of SAE 1045 steel, reinforced nylon 6.6 and NBR rubber used in clutch disks

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