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Characterization and modeling of sintering of polymer particles

Article dans une revue avec comité de lecture
Author
ASGARPOUR, Monir
86289 Laboratoire Procédés et Ingénierie en Mécanique et Matériaux [PIMM]
KHAVANDI, A.
223521 Iran University of Science and Technology [Tehran] [IUST]
ccBAKIR, Farid
134975 Laboratoire de Dynamique des Fluides [DynFluid]
ccKHELLADI, Sofiane

URI
http://hdl.handle.net/10985/17637
DOI
10.1002/app.32924
Date
2011
Journal
Journal of Applied Polymer Science

Abstract

An experimental study of simultaneous sintering of several particles has been carried out using spherical polymer grains. Considering rotational molding condition, coalescence of several grains in contact, happens simultaneously on internal surface of the mould. Theoretical model based on the effect of surface tension and viscosity can accurately predict the coalescence of a pairs of grains. However, it was observed in this study that coalescence rate changes with presence of neighboring grains and their position and the theoretical model proposed for two grains, is not able to predict the coalescence rate of mutli-grains. Based on this finding, we have modified this model with taking into account the effect of neighboring particles in the sintering rate of multi-grains. Obtained modified model is capable of predicting the multi-grains sintering rate observed in this study.

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