Title: Triboelectric charging of polyethylene powders: Comparison of same-material and different-material
Authors: Konopka, Ladislav
Jantač, Simon
Vrzáček, M.
Svoboda, Miloš
Kosek, Juraj
Citation: KONOPKA, L., JANTAČ, S., VRZÁČEK, M., SVOBODA, M., KOSEK, J. Triboelectric charging of polyethylene powders: Comparison of same-material and different-material. Powder technology, 2020, roč. 367, č. MAY 1 2020, s. 713-723. ISSN 0032-5910.
Issue Date: 2020
Publisher: Elsevier
Document type: článek
URI: 2-s2.0-85083465226
ISSN: 0032-5910
Keywords in different language: Powder charging;Triboelectric charging;Polyethylene;Unipolar;Bipolar;Agglomeration
Abstract in different language: The understanding of triboelectric charging of industrially important powders can help in avoiding or controlling the particle agglomeration and wall sheeting. We developed a new experimental approach to study both same material particle-particle (P-P) and different-material particle-wall (P-W) charging of nascent polyethylene (PE) particles born by catalytic polymerization. We constructed a simple tribocharger consisting of a metal box divided inside into several compartments filledwith the PE sample and attached to the vibration shaker. The particle charge distribution was characterized by a self-constructed electrostatic separator. This way, we investigated the charging dynamics of PE particles colliding with other PE particles as well as with metal walls of the box compartments. Both P-P and P-W charging were measured either separately, or in sequence, and in combination of simultaneous P-P and P-W. The differentmaterial P-W charging produced unipolarly charged particles and was much faster than the same-material P-P charging leading to bipolar particle charge distribution.
Rights: © Elsevier
Appears in Collections:Články / Articles

Please use this identifier to cite or link to this item: http://hdl.handle.net/11025/39582

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