Shrinkage alteration induced by segregation of glass beads in injection molded PA6: Experimental analysis and modeling

• Published in: Polymer engineering and science Vol. 51; no. 12; pp. 2517 - 2525
• Main Author: KOVACS, J. G
• Format: Journal Article
• Language: English
• Published: Hoboken Wiley Subscription Services, Inc., A Wiley Company 01-12-2011; Wiley; Society of Plastics Engineers, Inc; Blackwell Publishing Ltd
• Subjects: Analysis; Applied sciences; Atomic properties; Beads; Chemical properties; Composites; Exact sciences and technology; Flow paths; Forms of application and semi-finished materials; Glass; Injection molding; Materials; Mathematical models; Mechanical properties; Polyamide resins; Polyamides; Polymer industry, paints, wood; Polymers; Segregations; Shrinkage; Technology of polymers; Hungary; Amide 6 polymer; Manufacturing defect; Aliphatic polymer; Concentration effect; Glass; Injection molding; Dispersion reinforced material; Shrinkage; Experimental study; Modeling; Diameter; Composite material
• ISSN: 0032-3888; 1548-2634
• DOI: 10.1002/pen.22025

The segregation effect of glass beads along the flow path during the injection molding process was evaluated. Experiments were carried out on injection molded polyamide 6 (PA6) composites with solid glass bead (GB) depends on both the diameter and the concentration of the glass beads. A model is suggested to describe the observed variations. In addition, segregation affects the distribution of volumetric shrinkage along the flow path, playing a major role in the dimensional accuracy of the part. A model is also proposed to include the effect of glass beads segregation in shrinkage calculations. POLYM. ENG. SCI., 2011. © 2011 Society of Plastics Engineers