Abstract
We study the influence of the surface energy and contamination films on rubber adhesion and sliding friction. We find that there is a transfer of molecules from the rubber to the substrate which reduces the work of adhesion and makes the rubber friction insensitive to the substrate surface energy. We show that there is no simple relation between adhesion and friction: adhesion is due to (vertical) detachment processes at the edge of the contact regions (opening crack propagation), while friction in many cases is determined mainly by (tangential) stick-slip instabilities of nanosized regions, within the whole sliding contact. Thus while the pull-off force in fluids may be strongly reduced (due to a reduction of the work of adhesion), the sliding friction may be only slightly affected as the area of real contact may be dry, and the frictional shear stress in the contact area nearly unaffected by the fluid.
Highlights
The friction and adhesion between rubber materials and a counter surface have many practical applications, e.g., for tires, conveyor belts, rubber seals, and pressure-sensitive adhesives
In this article we have presented results for rubber adhesion and friction against glass in dry and wet conditions
In many cases we found that changing the glass surface energy by silanizing does not affect the magnitude of rubber friction on the smooth and sandblasted glass surfaces
Summary
The friction and adhesion between rubber materials and a counter surface have many practical applications, e.g., for tires, conveyor belts, rubber seals, and pressure-sensitive adhesives. The adhesion and friction of rubber is a very complex topic because of the temperature and frequency dependency and the non-linearity of the stress-strain relation. All solids have surface roughness, usually extending from the linear size of the object down to atomic distances, which strongly influence the contact mechanics (Heinrich and Klüppel, 2002; Persson, 2006; Israelachvili, 2011; Persson, 2013; Persson, 2014; Gnecco and Meyer, 2015; Heinrich and Vilgis, 2015; Barber, 2018). Paper we will study the influence of the substrate surface energy on adhesion and friction. We will study how rubber transfer to the track may influence the friction for another rubber compound sliding on the surface contaminated by the first compound
Sign-in/Register to view highlights & summary 
Published Version (
Free)
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
