Modélisation du mécanisme de coalescence des grains de polymère
Communication avec acte
Date
2007Abstract
Dans le procédé du rotomoulage, le phénomène physique majeur lors de l’écoulement des poudres est la coalescence et densification des grains. La coalescence est la formation d’une seule particule elliptique à partir de deux particules sous l’effet de la température et des forces de tension surfacique. Nous intéressons dans cette étude en particulier au mécanisme de coalescence des grains de poudre de PVDF. Les résultats de cette étude permettent de déterminer des paramètres tel que la vitesse de la coalescence pour l’optimisation du procédé.
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