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

L. E. Khoong, Y. C. Lam, J. C. Chai, L. Jiang, J. Ma

Research output: Contribution to journalArticle

11 Citations (Scopus)

Abstract

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.

Original languageEnglish
Pages (from-to)6927-6938
Number of pages12
JournalChemical Engineering Science
Volume62
Issue number23
Early online date24 Aug 2007
DOIs
Publication statusPublished - Dec 2007
Externally publishedYes

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