Friction and Wear Behaviour of Polyester Nanocomposites with Graphene Oxide and Graphite Investigated Through Block-on-ring Test

Abstract

A new class of polyester nanocomposites with graphene oxide and graphite has been obtained through a specific chemical method. Aiming to assess the tribological performance of this type of material, a basic experimental plan has been conceived which includes block-on-ring test, wear rate measurement, Vickers micro hardness test and scanning electron microscopy. Accordingly, the influence of graphene oxide and graphite on coefficient of friction and friction stability were investigated through wear test of nanocomposite blocks against steel rings. At the same time, specific wear rate was inferred in order to examine the mass loss which is strongly dependent on surface micro hardness. After wear test, SEM analysis allowed identification of the transfer film between nanocomposite surface and steel counterpart, and the occurrence of the third body. A careful examination of the friction coefficient recordings has highlighted the effect of the contact condition during the dry sliding test.

Unsaturated Polyester and Its Nanocomposites Incorporated With Graphene Oxide – A Brief Review

“…In this way, mass loss is reduced compared to pure polyester coating. Similar results were observed for polyester nanocomposites with graphene oxide and graphite (BASTIUREA et al, 2018). Adapted from Gafsi et al (2021).…”

“…Furthermore, the macromolecular chains of nanocomposites tend to be stiffer than those of pure polyester when subjected to deformation, leading to a better wear resistance property. Furthermore, the thermal conductivity of GO can be beneficial when it comes to transferring frictional heat, which leads to a reduction in the decomposition of polyester resin in the friction area (BASTIUREA et al, 2018;BASHANDEH et al, 2019;ZHAI et al, 2017). In order to identify the wear mechanisms, the authors made SEM observations of the wear track on the coating surface of the GO-reinforced nanocomposites after 10.000 sliding cycles.…”

Application of graphene derivatives and their nanocomposites in tribology and lubrication: a review

“…(2) Polyester-type A new class of polyester nanocomposites with GO was obtained via a specic chemical method. 106 Through the wear test of the nanocomposite block on the steel ring, it was concluded that the incorporation of GO nanosheets into the polyester matrix at very low levels resulted in signicantly altered tribological properties. The inclusion of GO in the polyester matrix resulted in better anti-wear behavior of the nanocomposite.…”