Triboelectric charging of a glass bead impacting against polymers: Influence of mechanical properties
Résumé
Triboelectric charging of small particles is a common problem in industrial processes because it can lead to various undesired consequences such as electric discharges or surface adhesion. Despite the many studies on the phenomenon, there remains significant gaps in understanding regarding the charge transfer mechanisms responsible for triboelectric charging, impeding the ability to make predictions regarding a contact between two dielectric materials. An experimental setup measuring the charge generated during a single impact between a dielectric particle and a dielectric target under well controlled conditions is used to investigate the triboelectric charging of a glass bead against polymer targets. Mechanical parameters such as the normal and tangential velocities and their influence over the charge generated at impact are studied statistically against a Polytetrafluoroethylene (PTFE) and a Polyurethane (PU) target, and two different behaviours are exhibited. Additional tests were performed on beads of different diameter in order to enrich the observations previously made on mechanical properties.
Domaines
Mécanique des fluides [physics.class-ph] Matériaux et structures en mécanique [physics.class-ph] Physique Quantique [quant-ph] Acoustique [physics.class-ph] Biomécanique [physics.med-ph] Matériaux Polymères Acoustique [physics.class-ph] Automatique / Robotique Electromagnétisme Milieux fluides et réactifs Energie électrique Thermique [physics.class-ph] Vibrations [physics.class-ph] Physique mathématique [math-ph]
Origine : Fichiers produits par l'(les) auteur(s)
