Tribological behavior of short-cut aramid fiber reinforced SBR elastomers: the effect of fiber orientation

M. Khafidh; D.J. Schipper; M.A. Masen; V. Vleugels; J.W.M. Noordermeer

doi:10.15282/jmes.12.2.2018.15.0327

Authors

M. Khafidh Faculty of Engineering Technology, University of Twente, P.O. Box 217, 7500AE, Enschede, Netherlands
D.J. Schipper Faculty of Engineering Technology, University of Twente, P.O. Box 217, 7500AE, Enschede, Netherlands
M.A. Masen Department of Mechanical Engineering, Imperial College London, Exhibition Road, London, SW7 2AZ, United Kingdom
V. Vleugels Faculty of Engineering Technology, University of Twente, P.O. Box 217, 7500AE, Enschede, Netherlands
J.W.M. Noordermeer Faculty of Engineering Technology, University of Twente, P.O. Box 217, 7500AE, Enschede, Netherlands

DOI:

https://doi.org/10.15282/jmes.12.2.2018.15.0327

Keywords:

elastomer; fiber orientation; friction; wear.

Abstract

Elastomeric materials are widely used in daily applications, such as conveyor belts and wiper. Generally, elastomeric materials show poor tribological behavior. Adding fibers to an elastomer is a way to solve this problem. The orientation of the fibers influences the mechanical and tribological behavior of the elastomers. In the present study, the effect of short-cut aramid fiber orientation on the tribological behavior for a Styrene-Butadiene Rubber (SBR) was examined. Three types of compounds which have different fiber orientations were prepared, resulting in normal, transverse and longitudinal orientation to the sliding direction. A contact model of the viscoelastic-anisotropic behaving elastomer was used to calculate the contact area. The friction and wear of the compounds were evaluated using a pin-on-disc tribometer. The results show that the frictional shear stresses of all compounds are nearly the same due to the presence of fibers on the wear track. The normal orientation of fibers shows the mostv effective way to increase the wear resistance compared to the longitudinal and transverse orientation of the fibers.

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