Using Supercritical Carbon Dioxide for Physical Foaming of Advanced Polymer Materials
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Abstract
Foams from high performance polymers find more and more interest. The processes to generate them can be difficult, however. It is shown how physical foaming with CO2 can be used as a first step to assess the potentials of such materials. For investigations of such kind an autoclave on a laboratory scale which allows pressure variations up to 300 bars and temperatures up to 300°C was set up. The samples are saturated with supercritical carbon dioxide (s.c. CO2) which acts as a foaming agent. Depending on the process and material parameters different foam characteristics and cell morphologies were obtained and characterised. The potential of this method is demonstrated for two different classes of advanced polymer materials, thermoplastic fluoropolymers (FEP), and a silicone resin. In the case of the fluoropolymer, previously prepared films were foamed and the effects of various process parameters on the foam characteristics were investigated. Besides the general potential of foams from fluoropolymers, they are candidates for polymeric piezoelectric materials with a relatively high temperature stability. Silicone polymers possess some properties superior to common organic polymers. First results on the foaming behaviour of a silicone resin are presented.
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Articles in the same Issue
- 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
Articles in the same Issue
- 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
