A Comparison of CO2 and N2 Foaming Behaviors of PP in a Visualization System
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Q.-P. Guo
Abstract
Understanding of polypropylene (PP) foaming is critically important to reduce the weight of automotive parts. In this study, we used a batch foaming simulation system with visualization cell, to observe the foaming behaviors of PP that is blown with CO2 and N2 under various experimental conditions. We found that the nucleating agent content, initial temperature, pressure (i. e., gas content), and pressure drop rate during foaming have a significant effect on cell nucleation and cell growth. The cell density and the void fraction of PP foamed with CO2 and N2, respectively, were separately observed and compared. It was found that under the same experimental conditions, the maximum cell density of PP foamed with CO2 was higher than that of PP foamed with N2. However, the maximum cell density of PP foamed with CO2 was determined to be lower than that of PP foamed with N2, when the same gas mole numbers were employed. Based on the experimental results, optimum foaming conditions and effective processing strategies for PP-CO2 system are suggested.
© 2020 by Walter de Gruyter Berlin/Boston
Articles in the same Issue
- Titelei
- CONTENTS
- EDITORIAL
- Special issue for Pierre J. Carreau
- Regular Contributed Articles
- Microstructure and Tribological Properties of TPU/Fluoropolymer Composites
- Optimization and Scale-Up of Twin-Screw Reactive Extrusion: The Case of EVA Transesterification
- The Effect of Physical Aging on the Mechanical Properties of Raw, Treated and Compatibilized Coir Fibers-Based Polyisoprene Bio-Composites
- Film Blowing of PHB-Based Systems for Home Compostable Food Packaging
- Inverse Rheological Methods for the Determination of Polymer Structures, Diffusion of Small Molecules and Nanofiber Lengths
- Preparation, Characterization and Processing of PCL/PHO Blends by 3D Bioplotting
- Modeling and Numerical Simulation of Laminated Thermoplastic Composites Manufactured by Laser-Assisted Automatic Tape Placement
- A Surfactant-Free Microfluidic Process for Fabrication of Multi-Hollow Polyimide Aerogel Particles
- Preparation and Characterization of Reduced Graphene Oxide Based Natural Rubber Nanocomposites
- A Comparison of CO2 and N2 Foaming Behaviors of PP in a Visualization System
- PPS NEWS
- SEIKEI-KAKOU ABSTRACTS
- INSTRUCTIONS TO AUTHORS
- PPS Membership Application/Impressum
Articles in the same Issue
- Titelei
- CONTENTS
- EDITORIAL
- Special issue for Pierre J. Carreau
- Regular Contributed Articles
- Microstructure and Tribological Properties of TPU/Fluoropolymer Composites
- Optimization and Scale-Up of Twin-Screw Reactive Extrusion: The Case of EVA Transesterification
- The Effect of Physical Aging on the Mechanical Properties of Raw, Treated and Compatibilized Coir Fibers-Based Polyisoprene Bio-Composites
- Film Blowing of PHB-Based Systems for Home Compostable Food Packaging
- Inverse Rheological Methods for the Determination of Polymer Structures, Diffusion of Small Molecules and Nanofiber Lengths
- Preparation, Characterization and Processing of PCL/PHO Blends by 3D Bioplotting
- Modeling and Numerical Simulation of Laminated Thermoplastic Composites Manufactured by Laser-Assisted Automatic Tape Placement
- A Surfactant-Free Microfluidic Process for Fabrication of Multi-Hollow Polyimide Aerogel Particles
- Preparation and Characterization of Reduced Graphene Oxide Based Natural Rubber Nanocomposites
- A Comparison of CO2 and N2 Foaming Behaviors of PP in a Visualization System
- PPS NEWS
- SEIKEI-KAKOU ABSTRACTS
- INSTRUCTIONS TO AUTHORS
- PPS Membership Application/Impressum
