特集「乾式粉体プロセスにおける微粒子の帯電現象およびその応用」
粉体の帯電メカニズム
2013 年 28 巻 4 号 p. 245-250
詳細
2013 年 28 巻 4 号 p. 245-250
In this paper the mechanism of contact- or tribo-electrostatic charging of powder was briefly reviewed.Although it is often referred that ‘electrostatics is mysterious’, but the fact should be noted that the entire system of the electromagnetism, such as Coulomb’s law, is ultimately well established. After this, there are parts of knowledge on electrostatics as well understood, miss-understood sometimes, and questions leftover, and these should be separated carefully. The central question to be answered is how much amount of charge is held by each particle. On this topic, two mechanisms of charge generation and of charge fixation were reviewed and discussed in general.
