Flow properties of fine powders in powder coating--颗粒学报PARTICUOLOGY

Huang, Q., Zhang, H., & Zhu, J. (2010). Flow properties of fine powders in powder coating. Particuology, 8(1), 19–27. https://doi.org/10.1016/j.partic.2009.05.007

Flow properties of fine powders in powder coating

Qing Huang, Hui Zhang, Jesse Zhu^*

Particle Technology Research Centre, Department of Chemical and Biochemical Engineering, The University of Western Ontario, 1151 Richmond Street, London, Ontario, Canada N6A 5B9

10.1016/j.partic.2009.05.007

Volume 8, Issue 1, February 2010, Pages 19-27

Received 27 January 2009, Accepted 8 May 2009, Available online 17 December 2009.

E-mail: jzhu@uwo.ca

Highlights

Abstract

Three types of nanoparticles and their combinations were blended into a fine powder, which has been used in the powder coating industry. To study their effects on flow properties, the modified powder samples were characterized using a variety of techniques that tested the powder under different powder states ranging from dynamic to static. It was found that all three nanoparticles improved the flow properties of the powder to some degree, though the amounts of the nanoparticles needed were different depending on their physical properties. Secondly, inconsistency among these powder characterization techniques was also found. This is attributed to the different states of the powder samples during a measurement including dynamic, dynamic-static and static states. It was confirmed that characterization techniques which test the flow properties of a powder under all three states are needed to fully describe the flow properties of the powder. Finally, the effects of combinations of nanoparticles were explored, and it was found that combinations of nanoparticles can intensify, weaken or combine the effects of their component nanoparticles. The effects of nanoparticle combinations are not a simple summation of the effects of their component nanoparticles.

Graphical abstract

Keywords

Fine powders; Nanoparticle; Flow property; Flow property characterization; Powder coating

文章导读