Measurement and 3D Computer Simulation of the Crystallinity Distribution in Injection Molded Syndiotactic Polystyrene
Abstract
Injection molding of semi-crystalline polymers has been one of the most important yet complicated fabrication processes that combines polymer rheology, heat transfer, and crystallization kinetics. 3D mathematical modeling of polymer flow, and computer simulation of distributions of crystallinity in a semi-crystalline polymer in injection molding applications were studied in this project. Our modeling includes the shear stress and thermal conduction in the width direction and will also eventually provide details of the polymer flow in intricate small cavities of changing cross sections. The simulation developed in this study predicted 3D crystallization properties of syndiotactic polystyrene as a function of position in an injection molded part. The predicted crystallinity distributions were effectively described across a profile at various locations along the flex bar as a function of different molding temperatures and different hold times.
Document Details
- Document Type
- Technical Report
- Publication Date
- Aug 01, 2001
- Accession Number
- ADP013685
Entities
People
- Kevin Nichols
- Pavan K. Yarala
- Qin Sheng
- Richard D. Sudduth
Organizations
- University of Dayton