A study on the tribological behavior of hybrid PTFE/Kevlar fabric composites filled with nano‐SiC and/or submicron‐WS₂ fillers

Abstract

The tribological behaviors of hybrid PTFE/Kevlar fabric composites filled with nano-SiC and/or submicron-WS 2 fillers were studied. Scanning electron microscopy and energy-dispersive X-ray spectrometer were used for analysis of the worn surface, transfer film, and debris of the PTFE/Kevlar fabric composites. In addition, the wear volume loss of the composite was measured by means of a laser microscopic 3D and profile measurement apparatus. The results indicate that although both single fillers and hybrid fillers can reduce the wear rate of composites, but hybrid fillers filled composites could achieve the desired comprehensive tribological properties in dry sliding. The improved tribological performance of filled composites can be attributed to two aspects: the formation of a thin and tenacious transfer film on the counter-surface, and the restrain the formation of larger debris. Tiny wear debris was easily trapped in the gap of a worn surface and can repair the damaged surface. In addition, the trapped debris could be considered as a secondary source of lubricant. POLYM. COMPOS., 37:2218-2226, 2016

Parametric study and optimization of multiwalled carbon nanotube filled friction composite materials using taguchi method

“…Whereas, in case of NT‐3/NT‐4 with ≥7.50 wt% of Kevlar and ≥2.75 wt% of graphite content, the amount of soft ingredients in the formulation increased. Hence, larger soft ingredients were exposed to the worn surface results in the formation of a friction film that adheres nicely to the rubbing surfaces, which helps in reducing COF and minimizing W R as found experimentally . It has been known that the level, which has the highest S‐N ratio, is the optimal level for the factor.…”

A Review of Surface Treatments for Sliding Bearings Used at Different Temperature

“…The results showed that the friction coefficient was 0.15-0.2 under different loads [11]. Li studied the friction and wear properties of nano-materials SiC and WS 2 , and the friction coefficient of surface liner under dry friction was about 0.05-0.06 [12]. Fabrics were treated with rare earths CeO 2 , LaCl 3 , La 2 O 3 and CeF 3 by Shen, Zhan and some scholars, and their friction, wear properties and bonding properties of the joint bearings with the modified rare earths were studied.…”

Combined effects of interface modification and micro-filler reinforcements on the thermal and tribological performances of fabric composites

“…Routinely, highly intrinsic thermally conductive fillers, such as aluminum nitrides (AlN), boron nitride (BN), carbon nanotubes (CNTs), and graphene oxide (GO), are incorporated into the polymer matrix to address the heat removal issues of composites [29][30][31]. Meanwhile, it has been noted that the introduction of solid lubricants, for example, graphite, graphitic carbon nitride (g-C 3 N 4 ), MoS 2 , and WS 2 , into the polymer matrix contributes to the formation of solid lubricant tribofilms on the counterface owing to their layered structures [32][33][34]. Based on these by the above considerations, it is expected that the combination of thermally conductive fillers and solid lubricants can generate a synergetic effect hence improving the tribological performance of polymer composites.…”