Berlin 2005 – wissenschaftliches Programm
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CPP: Chemische Physik und Polymerphysik
CPP 29: POSTER: Polymer physics
CPP 29.25: Poster
Dienstag, 8. März 2005, 16:30–18:30, Poster TU D
Influencing factors on the adhesion of elastomeres — •Martin Kitsche1, Wolfram Hild1, Norbert Kendziorra2, Gert Heinrich3, and Juergen A. Schaefer1 — 1TU Ilmenau, Institut für Physik und ZMN, Postfach 100565, 98694 Ilmenau — 2Continental AG, Jädekamp 30, 30419 Hannover — 3Leibniz-Institut für Polymerforschung, Hohe Straße 6, 01069 Dresden
Adhesion has been a topic of research for a long time. However, it is not well understood in detail. Due to their unique properties and various conformations, elastomeres are very important for many industrial sectors. The relation between the adhesion mechanisms and the associated characteristics of friction and wear of elastomeric components is still unexplained although it is essential for many technical applications. Former investigations in this field do not pay enough attention to viscoelastic properties of the material.
In the investigations presented here we studied the influence of normal force, detachment velocity, Youngs-modulus of rubber samples (natural, isoprene and styrene-butadien rubber) and the roughness of the counter sample (glass and perspex) on the pull-off force. It was found that the viscoelastic properties have a significant influence on the measured pull-off forces in dynamic loading. Another finding is the decrease of pull-off forces with increasing roughness. This decrease is steeper with higher Youngs-modulus and corresponds to the results of Fuller and Tabor.