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Flame-Retardant Polyamide Powder for Laser Sintering: Powder Characterization, Processing Behavior and Component Properties.
Polymers (Basel). 2020 Jul 29; 12(8)P

Abstract

Up to now, laser-sintered components have been barely used by industries such as aerospace and transport industry due to high flammability. By the use of flame retardants, the flammability of laser-sintered parts should be reduced to extend their range of possible applications. This paper aims to investigate the influence of halogen-free phosphinate-based flame retardants on process-relevant characteristics and process behavior, as well as mechanical and physical properties. Most importantly, the flammability of the material should be reduced. Two different types of phosphinate-based fillers were used in a concentration between 10 and 25 wt % in combination with the matrix material polyamide 12 (PA12). Thermal, optical, and powder properties of the mixtures were analytically investigated. Furthermore, the mechanical characterization of the sintered specimen was carried out. The addition of filler in laser sintering changes the process behavior and properties of the component. With this investigation, the correlation among flame retardants, process-relevant characteristics, process behavior, and resulting part properties was derived for the first time. Finally, a mixture of 15-20 wt % of flame retardant leads to the best trade-off between flame retardancy and mechanical properties.

Authors+Show Affiliations

Institute of Polymer Technology, Friedrich-Alexander-Universität Erlangen-Nürnberg, Am Weichselgarten 9, 91058 Erlangen, Germany.Professorship of laser-based Additive Manufacturing, Department of Mechanical Engineering, Technical University of Munich, Boltzmanstraβe 15, 85748 Garching b. Munich, Germany.Institute of Polymer Technology, Friedrich-Alexander-Universität Erlangen-Nürnberg, Am Weichselgarten 9, 91058 Erlangen, Germany.

Pub Type(s)

Journal Article

Language

eng

PubMed ID

32751211

Citation

Schneider, Kevin, et al. "Flame-Retardant Polyamide Powder for Laser Sintering: Powder Characterization, Processing Behavior and Component Properties." Polymers, vol. 12, no. 8, 2020.
Schneider K, Wudy K, Drummer D. Flame-Retardant Polyamide Powder for Laser Sintering: Powder Characterization, Processing Behavior and Component Properties. Polymers (Basel). 2020;12(8).
Schneider, K., Wudy, K., & Drummer, D. (2020). Flame-Retardant Polyamide Powder for Laser Sintering: Powder Characterization, Processing Behavior and Component Properties. Polymers, 12(8). https://doi.org/10.3390/polym12081697
Schneider K, Wudy K, Drummer D. Flame-Retardant Polyamide Powder for Laser Sintering: Powder Characterization, Processing Behavior and Component Properties. Polymers (Basel). 2020 Jul 29;12(8) PubMed PMID: 32751211.
* Article titles in AMA citation format should be in sentence-case
TY - JOUR T1 - Flame-Retardant Polyamide Powder for Laser Sintering: Powder Characterization, Processing Behavior and Component Properties. AU - Schneider,Kevin, AU - Wudy,Katrin, AU - Drummer,Dietmar, Y1 - 2020/07/29/ PY - 2020/06/23/received PY - 2020/07/16/revised PY - 2020/07/23/accepted PY - 2020/8/6/entrez PY - 2020/8/6/pubmed PY - 2020/8/6/medline KW - flame-retardant polymer KW - flammability KW - polyamide 12 KW - selective laser sintering JF - Polymers JO - Polymers (Basel) VL - 12 IS - 8 N2 - Up to now, laser-sintered components have been barely used by industries such as aerospace and transport industry due to high flammability. By the use of flame retardants, the flammability of laser-sintered parts should be reduced to extend their range of possible applications. This paper aims to investigate the influence of halogen-free phosphinate-based flame retardants on process-relevant characteristics and process behavior, as well as mechanical and physical properties. Most importantly, the flammability of the material should be reduced. Two different types of phosphinate-based fillers were used in a concentration between 10 and 25 wt % in combination with the matrix material polyamide 12 (PA12). Thermal, optical, and powder properties of the mixtures were analytically investigated. Furthermore, the mechanical characterization of the sintered specimen was carried out. The addition of filler in laser sintering changes the process behavior and properties of the component. With this investigation, the correlation among flame retardants, process-relevant characteristics, process behavior, and resulting part properties was derived for the first time. Finally, a mixture of 15-20 wt % of flame retardant leads to the best trade-off between flame retardancy and mechanical properties. SN - 2073-4360 UR - https://www.unboundmedicine.com/medline/citation/32751211/Flame_Retardant_Polyamide_Powder_for_Laser_Sintering:_Powder_Characterization_Processing_Behavior_and_Component_Properties_ L2 - https://www.mdpi.com/resolver?pii=polym12081697 DB - PRIME DP - Unbound Medicine ER -
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