About this Abstract |
Meeting |
2022 Annual International Solid Freeform Fabrication Symposium (SFF Symp 2022)
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Symposium
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2022 Annual International Solid Freeform Fabrication Symposium (SFF Symp 2022)
|
Presentation Title |
Material Modelling of the Photopolymers for Additive Manufacturing Processes |
Author(s) |
Kubra Sekmen, Thomas Rehbein, Michael Johlitz, Alexander Lion, Andrei Constantinescu |
On-Site Speaker (Planned) |
Kubra Sekmen |
Abstract Scope |
This contribution presents experimental investigations and material modelling of the UV curing polymers to predict the influence of process parameters on the thermal and mechanical properties. Firstly, photo-DSC measurements are performed to investigate the crosslinking reaction and to model the degree of cure as a function of the light intensity and temperature. The change of the viscoelastic properties is measured with UV rheometry and dynamic mechanical analysis (DMA). Time-temperature and time-cure superposition principles are applied to the experimental results. In addition, chemical shrinkage behaviour is captured as a function of the degree of cure by the high-precision balance setup. Model equations are provided to describe the material behaviour as a result of our experimental findings. |
Proceedings Inclusion? |
Definite: Post-meeting proceedings |