Applied Rheology (Jun 2006)

Prediction of Zero Shear Viscosity of Poly (Vinyl Chloride) Plastisols

  • Lainé Carole,
  • Cassagnau Philippe

DOI
https://doi.org/10.1515/arh-2006-0009
Journal volume & issue
Vol. 16, no. 3
pp. 136 – 144

Abstract

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The rheological behaviour of PVC plastisols composed of a blend of suspension and micro-suspension resins in different proportions was investigated. The present work was mainly focused on the variation of the zero shear viscosity versus the concentration of the extender resin. Hence, the packing fraction Fm was evaluated using the Krieger-Dougherty equation. These experiments confirmed the major influence of particle size distribution concerning the decrease of viscosity for concentrated suspensions. In addition, a model based on the porosity model developed by Ouchiyama et al. (Ouchiyama N, Tanaka T: Porosity estimation for random packings of spherical particle”, Ind. Eng. Chem. Fundam. 23 (1984) 490-493) to predict the packing fraction in the case of multimodal lattices was successfully applied to our PVC plastisols formulations.

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