May 16-21, 2010
This study addresses a novel concept of dense-fluidized bed coating of objects where the effectiveness of coating is promoted by the intentional and controlled establishment of shear flow around the object. The fluidized powder is sheared by the controlled oscillatory motion of the object with respect to the fluidized bed. The proof-of-concept is given with experiments carried out using a commercial powder specifically manufactured for dry coating applications in fluidized bed. Systematic analysis of the effect of different levels of shear rate on particle mobility/adhesion and effectiveness of coverage was performed. A simple descriptive model has been developed to provide a mechanistic framework for the interpretation of the results.
Piero Bareschino, Francesco Pepe, and Piero Salatino, "SHEAR-ASSISTED FLUIDIZED BED POWDER-COATING" in "The 13th International Conference on Fluidization - New Paradigm in Fluidization Engineering", Sang Done Kim,Korea Advanced Institute of Science and Technology, Korea; Yong Kang, Chungnam National University, Korea; Jea Keun Lee, Pukyong National University, Korea; Yong Chil Seo, Yonsei University, Korea Eds, ECI Symposium Series, (2010). http://dc.engconfintl.org/fluidization_xiii/79