Numerical and experimental investigations on thermal debinding of polymeric binder of powder injection molding compact

A mathematical model is established to describe the thermal debinding process of polymeric binder from a powder injection molding compact. The model takes into account of the thermal degradation of liquid polymer into liquid volatile fragment, the evaporation of liquid volatile fragment, the capilla...

Full description

Saved in:
Bibliographic Details
Published in:Chemical engineering science 2007-12, Vol.62 (23), p.6927-6938
Main Authors: Khoong, L.E., Lam, Y.C., Chai, J.C., Jiang, L., Ma, J.
Format: Article
Language:English
Subjects:
Applied sciences
Binder removal
Chemical engineering
Exact sciences and technology
Heat and mass transfer. Packings, plates
Mass transfer
Materials processing
Mathematical modeling
Numerical analysis
Porous media
Citations: Items that this one cites
Items that cite this one
Online Access:Get full text
Tags: Add Tag
No Tags, Be the first to tag this record!
Description
Summary:A mathematical model is established to describe the thermal debinding process of polymeric binder from a powder injection molding compact. The model takes into account of the thermal degradation of liquid polymer into liquid volatile fragment, the evaporation of liquid volatile fragment, the capillary driven liquid phase transport, the binary diffusion in solution, the convection and diffusion of gas phases, and the heat transfer in a porous medium. The proposed model is solved numerically based on a finite volume method and validated with experimental data. Based on the numerical results, the binder removal, the pressure buildup, the binder distribution, the mass transfers, and the removal mechanisms during thermal debinding are studied.
ISSN:0009-2509
1873-4405
DOI:10.1016/j.ces.2007.08.051