Untersuchung des Einflusses der chemischen Zusammensetzung von Polymer-basierten Beschichtungen auf Oberflächen- und Materialparameter und deren taktile Wirkung

Translated title of the contribution: Investigating the influence of the chemical composition of polymer-based coatings on surface and material parameters and their tactile effect

Michael Grießer

Research output: ThesisMaster's Thesis

Abstract

Many industries are involved in the development of customized surfaces for special product applications. In particular, this concerns the coatings of automotive interior parts or panels in the furniture industry. The tactile effect of these surfaces contributes significantly to the classification and evaluation of their quality. Especially for paints and coatings, the chemical composition is crucial for the resulting surface properties. Therefore, targeted analyses of the most important influencing factors are necessary for a better understanding of the correlations. The topic of this master thesis was the investigation of relevant surface and material properties and their effect on tactile perception and friction behavior between a human finger and a countersurface. The research work was carried out within the framework of the strategic PCCL COMET-project ¿Engineering and full characterization of polymer based haptic materials. The first part consisted of conducting and evaluating experimental tests with selected polymer-based coatings on a specially developed measuring stand, which allows the measurement of tribological parameters such as the friction coefficient µ as well as mechanical vibrations during dynamic contact between a human finger and the sample surface. Another focus was on characterizing the samples with regard to their physical surface properties, such as surface hardness, topography and free energy. Furthermore, the selected coatings were evaluated according to certain perception criteria within the scope of small perception studies. The results showed a good correlation between the measured physical parameters and tactile perception. Important insights were gained regarding the contact and friction behavior of a human finger and the influence of the physical parameters of the contact surface. In particular, the measured surface hardness of the sample coatings had a major influence on tactile friction. In addition, an improved measurement methodology was applied in the course of the experiments, which significantly minimized the influence of skin moisture on the measurement of dynamic friction. By correlating all parameters, it was also possible to identify the key psychophysical perceptual dimensions of friction and roughness, which sufficiently accurately capture and describe the investigated sample coatings. The gained knowledge should contribute to the future development of a methodology with which it is possible to predict the tactile effects of such coatings on the basis of their material parameters and to optimize them according to the desired tactile property profile.
Translated title of the contributionInvestigating the influence of the chemical composition of polymer-based coatings on surface and material parameters and their tactile effect
Original languageGerman
QualificationDipl.-Ing.
Awarding Institution
  • Montanuniversität
Supervisors/Advisors
  • Pinter, Gerald, Co-Supervisor (internal)
  • Gruber, Dieter P., Supervisor (internal)
Award date31 Mar 2023
Publication statusPublished - 2023

Bibliographical note

embargoed until 13-02-2028

Keywords

  • Haptics
  • Tactile friction
  • Polymer coatings
  • Physical surface parameters
  • Experience studies

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