Control of Particle Tribocharging
| Autor: | Shuji Matsusaka |
|---|---|
| Jazyk: | angličtina |
| Rok vydání: | 2014 |
| Předmět: | |
| Zdroj: | KONA Powder and Particle Journal, Vol 29, Iss 0, Pp 27-38 (2014) |
| Druh dokumentu: | article |
| ISSN: | 0288-4534 2187-5537 |
| DOI: | 10.14356/kona.2011007 |
| Popis: | When two different materials are brought into contact and separated, an electrical charge is transferred from one to the other. This phenomenon is called contact electrification, contact charging, or tribocharging. Charged particles cause various secondary phenomena during powder processing, such as deposition, adhesion, and electrostatic discharge. Additionally, charged particles are used in many industrial applications such as electrophotography, electrostatic powder coating, and separation; thus, particle charge control is very important for improving particle performance. However, there are still many unknown effects, and in some cases, inconsistent results have been reported. In this review, the basic concepts and theories of charge transfer between solid surfaces are summarized and a description of particle charging caused by repeated impacts on a wall is formulated. On the basis of these concepts and formulations, novel methods of controlling particle tribocharging are presented. In particular, a method using an applied electric field is expected to be applicable in industrial fields. |
| Databáze: | Directory of Open Access Journals |
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