Study of Heat Absorption in Thermoforming for Transparent and Filled Polystyrene
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Abstract
Heating time and temperature distribution of a semi-finished pre-product are key factors for a satisfying final shape in the thermoforming process. The heating is in most cases done by radiation, which is modelled in simulation by the law of Bouguer Beer Lambert. Two material parameters, the reflection of the surface and the optical penetration depth are needed for the application of this law. One prerequisite for this is that the optical penetration depth is independent of the material thickness. In literature it is very often common to trust on that assumption and to determine it via single measurement of a film or plate with one thickness. The validity of this presumption is investigated for two different polystyrene compounds as part of this work. This assumption was fulfilled for a clear unfilled polystyrene (PS) in a wide range of wavelengths. In contradiction to this, the optical penetration depth of the white filled PS compound is dependent on film thickness. Moreover it increases slightly with film thickness. This deviation is correlated to the strong scattering effect of titanium dioxide contained in this compound.
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© 2013, Carl Hanser Verlag, München
Articles in the same Issue
- Contents
- Contents
- Regular Contributed Articles
- Rheology, Mechanical and Thermal Properties of C18-CNT/LDPE Nanocomposites
- Study of Heat Absorption in Thermoforming for Transparent and Filled Polystyrene
- Molecular Dynamics Study on Permeability of Gas Molecules through Amorphous PPX Polymers
- Melting Model for Starve Fed Single Screw Extrusion of Thermoplastics
- Crystallization Behavior of Polypropylene-graft-cardanol Prepared by Reactive Extrusion
- Influence of Extrusion Conditions on Fiber Breakage along the Screw Profile during Twin Screw Compounding of Glass Fiber-reinforced PA
- Effect of Hexamethylene Diisocyanate as Compatibilizer on the Mechanical Properties of Banana Fiber/Poly(butylene succinate) Composites
- Improving Melt Strength of Polylactic Acid
- Limitations of Simple Flow Models for the Simulation of Nanoimprint
- Joint Strength for Laser Transmission Welding of Thermoplastics: A Simulation Approach
- Comparison of Numerical and Experimental Data in Multi-objective Optimization of a Thermoplastic Molded Part
- PPS-News
- PPS-News
- Seikei Kakou Abstracts
- Seikei Kakou Abstracts
- Polímeros: Ciência e Tecnologia Abstracts
- Polímeros: Ciência e Tecnologia Abstracts
Articles in the same Issue
- Contents
- Contents
- Regular Contributed Articles
- Rheology, Mechanical and Thermal Properties of C18-CNT/LDPE Nanocomposites
- Study of Heat Absorption in Thermoforming for Transparent and Filled Polystyrene
- Molecular Dynamics Study on Permeability of Gas Molecules through Amorphous PPX Polymers
- Melting Model for Starve Fed Single Screw Extrusion of Thermoplastics
- Crystallization Behavior of Polypropylene-graft-cardanol Prepared by Reactive Extrusion
- Influence of Extrusion Conditions on Fiber Breakage along the Screw Profile during Twin Screw Compounding of Glass Fiber-reinforced PA
- Effect of Hexamethylene Diisocyanate as Compatibilizer on the Mechanical Properties of Banana Fiber/Poly(butylene succinate) Composites
- Improving Melt Strength of Polylactic Acid
- Limitations of Simple Flow Models for the Simulation of Nanoimprint
- Joint Strength for Laser Transmission Welding of Thermoplastics: A Simulation Approach
- Comparison of Numerical and Experimental Data in Multi-objective Optimization of a Thermoplastic Molded Part
- PPS-News
- PPS-News
- Seikei Kakou Abstracts
- Seikei Kakou Abstracts
- Polímeros: Ciência e Tecnologia Abstracts
- Polímeros: Ciência e Tecnologia Abstracts