Control of Particle Tribocharging
Control of Particle Tribocharging
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DOI：
10.14356/kona.2011007
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发表时间：
2011
影响因子：
4.1
通讯作者：
S. Matsusaka
中科院分区：
文献类型：
--
作者：
S. Matsusaka
当两种不同的材料接触并分开时，电荷就从一种物质转移到另一种物质。这种现象称为接触带电、接触带电或摩擦带电。带电粒子在粉末加工过程中会产生各种二次现象，如沉积、粘着、静电放电等。此外，带电粒子被用于许多工业应用，如电子照相、静电粉末涂层和分离；因此，粒子电荷控制对于提高粒子性能非常重要。然而，仍有许多未知的影响，在某些情况下，报告的结果不一致。本文综述了固体表面电荷转移的基本概念和基本理论，给出了多次撞击壁面引起的颗粒荷电的描述。在这些概念和公式的基础上，提出了控制颗粒摩擦带电的新方法。具体地说，使用外加电场的方法有望应用于工业领域。
When two dif ferent 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 ef fects, 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.