A platform for research: civil engineering, architecture and urbanism
A platform for research: civil engineering, architecture and urbanism
Binder burnout kinetics has been simulated using a "shrinking core" model for powder compacts and powder/fibre compacts. The model takes into account polymer decomposition, monomer diffusion in the core region and gaseous transport in the porous outer layer. Both cylindrical and plate compact geometries were considered. It is noted that a relatively longer time of debinding is required for the plate geometry. Experimental results with cylindrical powder compacts showed good agreement with the model prediction. The effects of compact size and shrinkage, fibre volume fraction and orientation on the burnout kinetics have been studied. It was found that the burnout time is increased with compact size and by compact shrinkage. Fibres aligned perpendicularly to the removal direction require the longest burnout time, while fibres aligned parallel to the removal direction provide faster diffusion paths along their surfaces and facilitate the burnout process. For all the cases, a higher fibre volume fraction leads to a more significant effect.
Binder burnout kinetics has been simulated using a "shrinking core" model for powder compacts and powder/fibre compacts. The model takes into account polymer decomposition, monomer diffusion in the core region and gaseous transport in the porous outer layer. Both cylindrical and plate compact geometries were considered. It is noted that a relatively longer time of debinding is required for the plate geometry. Experimental results with cylindrical powder compacts showed good agreement with the model prediction. The effects of compact size and shrinkage, fibre volume fraction and orientation on the burnout kinetics have been studied. It was found that the burnout time is increased with compact size and by compact shrinkage. Fibres aligned perpendicularly to the removal direction require the longest burnout time, while fibres aligned parallel to the removal direction provide faster diffusion paths along their surfaces and facilitate the burnout process. For all the cases, a higher fibre volume fraction leads to a more significant effect.
Kinetic modelling of binder removal in powder-based compacts
2004
7 Seiten, 13 Quellen
Article (Journal)
English
Kinetic modelling of binder removal in powder-based compacts
| British Library Online Contents | 2004
Modelling of Binder Burnout Process for Ceramic Compacts
| British Library Online Contents | 1997
Critical thickness in binder removal process for injection molded compacts
| British Library Online Contents | 2003
| British Library Online Contents | 2012
Improvement of Mechanical Properties of Green Powder Compacts by Using Novel Binder Systems
| British Library Online Contents | 1997