Affiliation:
1. Plastics Business Unit, Monsanto Company, Indian Orchard, MA
Abstract
Abstract
Surface defects in the injection molding of acrylonitrile-styrene-acrylate (ASA) weatherable polymers, such as “chevrons”, “non-uniform haze” and “step defect “, are examined. A criterion is proposed based on a flow instability mechanism which suggests that recoverable shear strain, shear stress, and coefficient of friction are the key factors controlling the formation of surface defects. The criterion is supported by various experiments.
Subject
Materials Chemistry,Industrial and Manufacturing Engineering,Polymers and Plastics,General Chemical Engineering
Cited by
14 articles.
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