(84f) Powder Characterization at the Edge of Sintering – High- and Low-Temperature Ring Shear Testing
AIChE Annual Meeting
2020 Virtual AIChE Annual Meeting
Particle Technology Forum
Powder and Particulate Processing: Characterization and Measurement
Monday, November 16, 2020 - 8:45am to 9:00am
In this Study, we will show both cryogenic as well as high-temperature measurements exploring the different ways that temperature influences the behaviour of bulk solids using dedicated measurement equipment.
From the onset of melt behaviour in partially crystalline polymers like Polyamide to the effect of the freezing of surface water in flour and other biological samples, the embrittlement of resins at low temperatures to the effect of drawing surface water from the atmosphere in cement.
Special consideration will be given to the functional mechanisms that are occurring at the edge of sintering temperature and the normal-stress dependent evolution of powders in or near a sintering regime.
All of these effects have their distinct signatures upon the flow behaviour and of course, play a major role in their caking behaviour. Both the data, their influence upon silo and hopper design as well as interpretations of the underlying mechanisms will be shown.
 Tomasetta, Igino, Diego Barletta, and Massimo Poletto. "Correlation of powder flow properties to interparticle interactions at ambient and high temperatures." Particuology 12 (2014): 90-99.