On the role of capillary and viscous forces on wear and frictional performances of natural fiber composites under lubricated polishing

This paper aims to investigate the frictional and wear performances of natural flax fibers reinforced polypropylene composites subjected lubricated mechanical polishing. Particularly, interactions between biocomposite surfaces two different liquids (oil water) are considered using a rotary tribometer where counter-face is fed by silicon carbide (SiC) abrasive papers. Friction at dry, water oil-lubricated polishing hence studied. The worn examined scanning electron microscope (SEM) an atomic force (AFM). Results show significant influence lubricant type on fiber composites. friction behavior dependent both hydrophilic oleophilic properties fibers. In addition wear, while thermal softening controls adhesive mechanism dry polishing, changing from oil leads modify sources only capillary forces viscous forces, which contributes increasing under