Paper Title:
Processing-Microstructure-Properties Relationships in Extrusion of Thermoplastics
  Abstract

In this work, a rectangular polypropylene profile was produced with several different extrusion conditions, in order to identify the most relevant processing variables determining its morphology and mechanical properties and to establish relationships between them. A Taguchi Design of Experiments (DOE) technique considering two levels for each variable (extrusion temperature, extrusion throughput, drawdown ratio and distance between the die and the cooling bath) defined the set of extrusions runs carried out. The resulting plastic profiles were characterized in terms of their microstructure and mechanical properties. It was concluded that the most significant processing variable determining the mechanical properties of the profiles is the extrusion temperature and that the drawdown ratio controls the degree of molecular orientation of the profile and, therefore, the extension of its shrinkage after heatiing.

  Info
Periodical
Materials Science Forum (Volumes 514-516)
Edited by
Paula Maria Vilarinho
Pages
833-837
DOI
10.4028/www.scientific.net/MSF.514-516.833
Citation
O. S. Carneiro, J. C. Viana, J. M. Nóbrega, "Processing-Microstructure-Properties Relationships in Extrusion of Thermoplastics", Materials Science Forum, Vols. 514-516, pp. 833-837, 2006
Online since
May 2006
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Price
$32.00
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