The Effect of Polymer Additives on Surface Quality of Microcellular Injection Molded Parts
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J. Lee
Abstract
Microcellular injection molding is an emerging process for producing foamed plastic parts with complex geometries. It has many advantages including material, energy, and cost savings as well as greater design freedom and dimensional stability. In spite of these advantages, this technique has been limited to non-aesthetic applications by its propensity to create parts with swirling patterns on the surface, a common characteristic of all foamed parts produced. This paper describes a novel method for achieving microcellular injection molded parts free of surface defects. By controlling the amount of supercritical fluid (SCF) and adding the proper type of polymer additives into the polymer, the onset and rate of cell nucleation were properly controlled so that swirl-free microcellular injection molded parts could be successfully molded. This paper presents the theoretical background and experimental results that demonstrate the effect of polymer additives on the surface quality of microcellular injection molded parts.
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© 2011, Carl Hanser Verlag, Munich
Artikel in diesem Heft
- Contents
- Contents
- Regular Contributed Articles
- Evaluation of Vacuum Venting for Micro-injection Molding
- Effect of Mechanical Milling on the Thermal Behavior of Polyethylene Reinforced with Nano-sized Alumina
- Preparation of Poly(acrylic acid)-Poly(ethylene oxide) Nanofibers via Electrospinning and Investigation of Their Morphology
- Concentration Effects of Organosilane (TESPD) on Mechanical Properties of Silica Filled Silicone Rubber/Natural Rubber Compounds
- Microcellular PP vs. Microcellular PP/MMT Nanocomposites: A Comparative Study of Their Mechanical Behavior
- Influence of Processing Conditions on Productivity, Thermal and Rheological Properties of Reprocessed Low Density Polyethylene
- Optimization of Dispersion of Nanosilica Particles in a PP Matrix and Their Effect on Foaming
- Paint/Polymer Interface Structure for ABS Injection Moldings
- Free Volume from Pressure and Temperature Dependent Viscosity and from PVT Measurements for Homo- and Copolymers
- Investigation into the Differences in the Selective Laser Sintering between Amorphous and Semi-crystalline Polymers
- Rheological Modeling and Dynamic Characteristics of Disc Extruders
- The Effect of Polymer Additives on Surface Quality of Microcellular Injection Molded Parts
- Using Supercritical Carbon Dioxide for Physical Foaming of Advanced Polymer Materials
- Effect of Ionomer on Barrier and Mechanical Properties of PET/Organoclay Nanocomposites Prepared by Melt Compounding
- Rapid Communications
- Triangle Rule for Operating Windows and Scale-up Criteria for Volume Resistivity of PP/Carbon Nanotubes Composites
- Crystallization in Polymer Melts: Metamorphism of Flow Induced Nuclei
- PPS-News
- PPS News
- Seikei Kakou Abstracts
- Seikei-Kakou Abstracts
Artikel in diesem Heft
- Contents
- Contents
- Regular Contributed Articles
- Evaluation of Vacuum Venting for Micro-injection Molding
- Effect of Mechanical Milling on the Thermal Behavior of Polyethylene Reinforced with Nano-sized Alumina
- Preparation of Poly(acrylic acid)-Poly(ethylene oxide) Nanofibers via Electrospinning and Investigation of Their Morphology
- Concentration Effects of Organosilane (TESPD) on Mechanical Properties of Silica Filled Silicone Rubber/Natural Rubber Compounds
- Microcellular PP vs. Microcellular PP/MMT Nanocomposites: A Comparative Study of Their Mechanical Behavior
- Influence of Processing Conditions on Productivity, Thermal and Rheological Properties of Reprocessed Low Density Polyethylene
- Optimization of Dispersion of Nanosilica Particles in a PP Matrix and Their Effect on Foaming
- Paint/Polymer Interface Structure for ABS Injection Moldings
- Free Volume from Pressure and Temperature Dependent Viscosity and from PVT Measurements for Homo- and Copolymers
- Investigation into the Differences in the Selective Laser Sintering between Amorphous and Semi-crystalline Polymers
- Rheological Modeling and Dynamic Characteristics of Disc Extruders
- The Effect of Polymer Additives on Surface Quality of Microcellular Injection Molded Parts
- Using Supercritical Carbon Dioxide for Physical Foaming of Advanced Polymer Materials
- Effect of Ionomer on Barrier and Mechanical Properties of PET/Organoclay Nanocomposites Prepared by Melt Compounding
- Rapid Communications
- Triangle Rule for Operating Windows and Scale-up Criteria for Volume Resistivity of PP/Carbon Nanotubes Composites
- Crystallization in Polymer Melts: Metamorphism of Flow Induced Nuclei
- PPS-News
- PPS News
- Seikei Kakou Abstracts
- Seikei-Kakou Abstracts