Preparation and tribological properties of graphene/poly(ether ether ketone) nanocomposites

Abstract

The tribological behavior of poly(ether ether ketone) (PEEK) composites was investigated using a universal micro-tribotester under dry friction conditions. We studied the effect of addition concentration, applied load, and sliding speed on the friction and wear behavior of composites filled with multi-walled carbon nanotubes (MWNTs), graphene oxide (GO) nanosheets, and c-aminopropyl trimethoxysilane-modified graphene oxide (GO-Si) nanosheets. The results showed that the friction reduction and anti-wear performance of PEEK composites filled with GO-Si is the most effective, that of the composites filled with GO is the next, while that of the composites filled with MWNTs is the worst. GO-Si-filled PEEK nanocomposites have the best friction reduction and anti-wear properties when the applied load and the sliding speed are 2.94 N and 0.0628 ms -1 , respectively. Furthermore, scanning electron microscope (SEM) investigation showed that GO-Si-filled PEEK composites had smooth worn surface under given applied load and sliding speed, and well-dispersed GO-Si in PEEK matrix provided a large surface area available for interaction between polymer molecules and GO-Si, which helped to reduce the wear of PEEK composites.

Wear and friction behaviour of poly-ether-ether-ketone (PEEK) filled with graphene, WS 2 and CNT nanoparticles

“…[24][25][26]. Similar findings were reported for graphene, the use of which in different applications is growing extensively [27][28][29]. These two types of fillers (WS 2 -based and carbon-based) also represent two different, anticipated effects on the tribological properties, i.e., the WS 2 -based particles with great friction properties [30] are mostly expected to contribute to a lower coefficient of friction, while the carbon-based particles are supposed, due to their excellent mechanical properties [28], to mainly influence the wear resistance.…”

A review of recent developments of friction modifiers for liquid lubricants (2007–present)

“…It has also been shown that IL/MWCNTs composite can improve the friction reduction and the wear resistant ability as a friction modifier in IL because the composite may play the role of roller bearing during friction process [230]. Graphene, a two-dimensional sp 2 carbon atoms arranged in a honeycomb lattice, has attracted considerable attention due to its unique structure and remarkable properties, and the tribological applications of graphene have been reported [231][232][233][234][235][236][237]. Eswaraiah et al studied the tribological behavior of engine oil containing graphene as additive.…”

Tribological Properties of Epoxy/Aramid Fabric Composites Reinforced by Boron Nitride of Single Layer

“…Graphene, as a typical representative of two-dimensional atomic crystals, has been studied extensively in many fields of polymer composites. In tribological aspects, there have been many studies about the investigation of friction and wear behavior of polymer nanocomposites modified by graphene, and various polymer matrices such as phenolic resin, PPS, polyimide, UHMWPE, poly(ether ether ketone), epoxy, polydopamine, nylon have been studied [12][13][14][15][16][17][18][19][20][21][22] .…”