Friction and wear of rubber/epoxy composites

Abstract

The sliding wear rate and frictional coefficient of epoxy/rubber or epoxy/rubber/aluminium oxide composites were measured against themselves as a wear rate. The observed wear rate-sliding velocity data appear to be explicable by a recently proposed fatigue-shear model based on damage accumulation physics. The proposed equation seems to explain both dry and wet friction (water lubricant) environments. The microstructural features of a worn surface were examined using a scanning electron microscope (SEM) and related to the measured tribological data.

Tribological behavior and mechanical properties of friction stir processed HDPE/Fe-Fe3O4 composites

“…The instantaneous friction coefficient was measured and the specific wear rate was calculated by Eq. 1 as following [21]:…”

On the specific wear rate of polymer composites

“…In Figure 9, the light area is the zone of material transfer layer induced by the adhesional contact between two mating asperities and the estimation of the real contact area is about 0.1 of the nominal contact area, judging from the material transfer layer revealed by the compositional analysis, for example, by EDAX. 29 The crack propagation velocity V, is estimated to be approximately 0.25 p d s , from the stress rupture data for a PBT/30 wt % glass fiber composite system shown in Figure 10.…”

Fluorinated graphite reinforced polytetrafluoroethylene/poly(butylene terephthalate) composites as friction materials for deep‐sea applications

“…The friction and wear performance of PBT have been investigated mostly under dry friction 8,9 . It is generally accepted that the neat PBT matrix is damaged mainly by adhesive wear initiated by frictional heat generated due to asperity contact, leading to subsequent microcracking 10,11 . The reinforcement mechanism of fillers such as fibers, 12–18 metal oxides, 19–21 clays, 22 and carbon materials 23,24 ranging from the nanometer to micrometer scale have also been reported, and different types of composites have been developed.…”

“…Another issue concerns the enhancement in tribological properties. The PBT matrix tends to transfer onto metallic counterparts through adhesive bonding arising from local frictional heat even in the presence of water 10 . The transfer film has a protective effect on friction pairs and generally effectively decreases wear 33,34 .…”