Modification of the Triboelectric Properties of Polymers Exposed to Long-Term Action of High-Levels of Ambient Humidity - Archive ouverte HAL Accéder directement au contenu
Communication Dans Un Congrès Année : 2023

Modification of the Triboelectric Properties of Polymers Exposed to Long-Term Action of High-Levels of Ambient Humidity

Résumé

Tribo-electrostatic separation of granular polymer materials is a complex phenomenon depending on several parameters, including the relative humidity of ambient air. The work presented in this paper was aimed at studying the effect of storage environmental conditions on the triboelectric charging and electrostatic separation. The experiments were carried out on four types of mm-size granular polymers, ABS, PS, PE, PP that were placed in a climatic chamber and kept 48 hours under controlled humidity. The thermal machine of the climatic chamber allowed humidity to be regulated within at 82% ± 4%, for a temperature of 19°C ± 1°C. The granules stored under these conditions will be designated as “humid”. Their water content was measured with a thermal-balance and compared with that of “normal” granules, kept at ambient humidity varying between 46% and 52%, at a temperature of 18°C ± 1°C. The water content of each of the four types of polymer granules increased by at least 10% after 48 h of exposure to the high relative humidity ambient conditions. The thin water layer formed at the surface of the particle can explain their modified triboelectric behavior. Both the recovery and the purity of the products collected after the tribo-electrostatic separation of the ABS/PS and PE/PP mixtures were poorer for the “humid” granules, due to the less efficient tribocharging in the fluidized bed device.
Fichier non déposé

Dates et versions

hal-04434997 , version 1 (02-02-2024)

Identifiants

Citer

Csaba Dani, Thami Zeghloul, Mihail Lungu, Imed Eddine Achouri, Djillali Aouimeur, et al.. Modification of the Triboelectric Properties of Polymers Exposed to Long-Term Action of High-Levels of Ambient Humidity. 2023 IEEE Industry Applications Society Annual Meeting (IAS), Oct 2023, Nashville, France. pp.1-3, ⟨10.1109/IAS54024.2023.10406481⟩. ⟨hal-04434997⟩
9 Consultations
0 Téléchargements

Altmetric

Partager

Gmail Facebook X LinkedIn More