Thermal Properties and Morphology Characteristics of a PP Mono-Filament and its Foam
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N. Chuapon
, O. Naithanom , Y. Sato , S. Areerat und H. Ito
Abstract
The polypropylene (PP) mono-filament is an alternative material that can be used for insulation, packaging, and polymer composite applications. In this study, PP mono-filaments were prepared by extrusion free-fall at temperatures of 190, 200, and 210°C through a micro extrusion die with a diameter of 900 μm. The free-fall speeds of the filament were controlled by a gear pump driving at speeds ranging from 12.5 to 20.0 min−1, and the extrudates were cooled at room temperature. The PP mono-filaments were subsequently foamed by a batch foaming process with sc-CO2 as the blowing agent at foaming temperatures of 165, 170, 175 and 180°C. The thermal properties and crystallinity of the prepared filaments and their foams were investigated using a DSC. The foam morphology and isotropic foam properties were characterized by SEM micrographs. The results show that the various morphologies of the PP mono-filament foams deviated from the isotropic foam behavior and had isotropic foam index values in the range of 1.1 to 2.3. In addition, the PP mono-filament that was foamed at 175°C expanded in the longitudinal direction and exhibited the highest expansion ratio, but its degree of crystallinity decreased compared to the mono-filaments. PP mono-filament foam represented a narrow crystallization temperature range and crystallization time than mono-filament and tended to a faster crystalline growth.
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Artikel in diesem Heft
- Contents
- Contents
- Regular Contributed Articles
- Converging-Diverging Flow in a Novel Extruder and its Application in Film Blowing
- Modeling of Plasticating Injection Molding – Experimental Assessment
- Viscosity Analysis of a Polymer-Based Drug Delivery System Using Open-Source CFD Methods and High-Pressure Capillary Rheometry
- Thermal Properties and Morphology Characteristics of a PP Mono-Filament and its Foam
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- Carbon Black Reinforced Thermoplastic Vulcanizates Based on High Impact Polystyrene/Styrene-Butadiene-Styrene Block Copolymer/Styrene-Butadiene Rubber Blends
- A Study of the Bubbles in UV Micro Roll-to-Roll Imprinting
- An Annular Rotating-Die Technique in Extrusion Process: Effect of Mandrel Rotating Speed on Extrudate Swell Behavior of HDPE Parison
- Investigation of the Structural Robustness of Deep Depth Injection Mold with Cavity Pressure and Mold Design
- Verifying the Melting Behavior in Single-Screw Plasticization Units Using a Novel Simulation Model and Experimental Method
- Processing of Polyetherimide/Cloisite 30B Nanocomposite by Vibration Casting Method
- Comparison between 1D and 3D Approaches for Twin-Screw Extrusion Simulation
- Study on the Polymer Melt Flow in a Closely Intermeshing Counter-Rotating Twin Screw Extruder
- The Influence of Moisture and Laminate Setup on the De-Consolidation Behavior of PA6/GF Thermoplastic Matrix Composites
- PPS News
- PPS News
- Seikei Kakou Abstracts
- Seikei Kakou Abstracts
Artikel in diesem Heft
- Contents
- Contents
- Regular Contributed Articles
- Converging-Diverging Flow in a Novel Extruder and its Application in Film Blowing
- Modeling of Plasticating Injection Molding – Experimental Assessment
- Viscosity Analysis of a Polymer-Based Drug Delivery System Using Open-Source CFD Methods and High-Pressure Capillary Rheometry
- Thermal Properties and Morphology Characteristics of a PP Mono-Filament and its Foam
- Thermal and Tensile Behavior of HD-PE Films Containing Iron (III) Acetylacetonate after UV Irradiation
- Carbon Black Reinforced Thermoplastic Vulcanizates Based on High Impact Polystyrene/Styrene-Butadiene-Styrene Block Copolymer/Styrene-Butadiene Rubber Blends
- A Study of the Bubbles in UV Micro Roll-to-Roll Imprinting
- An Annular Rotating-Die Technique in Extrusion Process: Effect of Mandrel Rotating Speed on Extrudate Swell Behavior of HDPE Parison
- Investigation of the Structural Robustness of Deep Depth Injection Mold with Cavity Pressure and Mold Design
- Verifying the Melting Behavior in Single-Screw Plasticization Units Using a Novel Simulation Model and Experimental Method
- Processing of Polyetherimide/Cloisite 30B Nanocomposite by Vibration Casting Method
- Comparison between 1D and 3D Approaches for Twin-Screw Extrusion Simulation
- Study on the Polymer Melt Flow in a Closely Intermeshing Counter-Rotating Twin Screw Extruder
- The Influence of Moisture and Laminate Setup on the De-Consolidation Behavior of PA6/GF Thermoplastic Matrix Composites
- PPS News
- PPS News
- Seikei Kakou Abstracts
- Seikei Kakou Abstracts