Halogen-Free Flame Retardant Powder Materials for Laser Sintering: Evaluation and Process Stability Analysis
F. Neitzel, I. Kletetzka, H.-J. Schmid, in: J. Beaman (Ed.), Proceedings of the 34th Annual International Solid Freeform Fabrication Symposium, Laboratory for Freeform Fabrication and University of Texas, Austin, 2023.
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Beaman, Joseph
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Abstract
The high flammability of components manufactured by laser sintering (LS) using standard polyamide 12 (PA12) powder still severely restricts their use in industries such as electronics, aviation, and transportation. A key factor for the further establishment of LS is the expansion of the material portfolio with, for example, refreshable and halogen-free flame-retardant (FR) powder materials. Accordingly, various halogen-free FRs are investigated in this work and evaluated with respect to their use in LS. First, their decomposition behavior and mode of action are examined. Subsequently, the additives are dry blended with PA12 to investigate properties relevant for LS, such as particle morphology, thermal behavior and melt viscosity. Afterwards, test specimens for UL94 vertical flame-retardancy tests are produced by processing the dry blends on an EOS P3 LS system. Finally, the process stability of the process-aged powder blends is investigated by again examining the thermal behavior and melt viscosity.
Publishing Year
Proceedings Title
Proceedings of the 34th Annual International Solid Freeform Fabrication Symposium
Conference
34th Annual International Solid Freeform Fabrication Symposium
Conference Location
Austin
Conference Date
2023-08-14 – 2023-08-16
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Neitzel F, Kletetzka I, Schmid H-J. Halogen-Free Flame Retardant Powder Materials for Laser Sintering: Evaluation and Process Stability Analysis. In: Beaman J, ed. Proceedings of the 34th Annual International Solid Freeform Fabrication Symposium. ; 2023. doi:https://doi.org/10.26153/tsw/50926
Neitzel, F., Kletetzka, I., & Schmid, H.-J. (2023). Halogen-Free Flame Retardant Powder Materials for Laser Sintering: Evaluation and Process Stability Analysis. In J. Beaman (Ed.), Proceedings of the 34th Annual International Solid Freeform Fabrication Symposium. https://doi.org/10.26153/tsw/50926
@inproceedings{Neitzel_Kletetzka_Schmid_2023, place={Laboratory for Freeform Fabrication and University of Texas, Austin}, title={Halogen-Free Flame Retardant Powder Materials for Laser Sintering: Evaluation and Process Stability Analysis}, DOI={https://doi.org/10.26153/tsw/50926}, booktitle={Proceedings of the 34th Annual International Solid Freeform Fabrication Symposium}, author={Neitzel, Fabian and Kletetzka, Ivo and Schmid, Hans-Joachim}, editor={Beaman, Joseph}, year={2023} }
Neitzel, Fabian, Ivo Kletetzka, and Hans-Joachim Schmid. “Halogen-Free Flame Retardant Powder Materials for Laser Sintering: Evaluation and Process Stability Analysis.” In Proceedings of the 34th Annual International Solid Freeform Fabrication Symposium, edited by Joseph Beaman. Laboratory for Freeform Fabrication and University of Texas, Austin, 2023. https://doi.org/10.26153/tsw/50926.
F. Neitzel, I. Kletetzka, and H.-J. Schmid, “Halogen-Free Flame Retardant Powder Materials for Laser Sintering: Evaluation and Process Stability Analysis,” in Proceedings of the 34th Annual International Solid Freeform Fabrication Symposium, Austin, 2023, doi: https://doi.org/10.26153/tsw/50926.
Neitzel, Fabian, et al. “Halogen-Free Flame Retardant Powder Materials for Laser Sintering: Evaluation and Process Stability Analysis.” Proceedings of the 34th Annual International Solid Freeform Fabrication Symposium, edited by Joseph Beaman, 2023, doi:https://doi.org/10.26153/tsw/50926.
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