Optical analysis of polymer powder materials for Selective Laser Sintering

This study increases the basic understanding of optical material properties of polymer powders used in selective laser sintering (SLS). Therefore, different polymer powder materials were analyzed regarding their optical material properties with an integration spheres measurement setup. By the measur...

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Bibliographic Details
Published in:Polymer testing 2016-12, Vol.56, p.207-213
Main Authors: Laumer, T., Stichel, T., Nagulin, K., Schmidt, M.
Format: Article
Language:English
Subjects:
Absorption
Additive manufacturing
Integration spheres
Laser sintering
Material qualification
Materials selection
Mechanical properties
New materials
Optical material characteristics
Optical properties
Polymers
Selective Laser Sintering
Studies
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Summary:This study increases the basic understanding of optical material properties of polymer powders used in selective laser sintering (SLS). Therefore, different polymer powder materials were analyzed regarding their optical material properties with an integration spheres measurement setup. By the measurements a direct connection between the absorption behavior of the solid material and the overall optical material characteristics of the same material in powdery form could be shown. The results were used to develop an advanced explanation model for the optical material properties of powders. At present, existing explanation models only consider the occurring of multiple reflections in the gaps between the particles to explain the overall optical material properties of powder materials. Thus, by also considering the absorption behavior of the single particles, the basic understanding of the beam-matter interaction and their effect on the optical material properties of powder materials can be expanded.
ISSN:0142-9418
1873-2348
DOI:10.1016/j.polymertesting.2016.10.010