RT Journal Article
T1 Development of Flame-Retardant Polylactic Acid Formulations for Additive Manufacturing
A1 Aguirresarobe, Robert
A1 Calafel, Itxaso
A1 Villanueva, Sara
A1 Sanchez, Alberto
A1 Agirre, Amaia
A1 Sukia, Itxaro
A1 Esnaola, Aritz
A1 Saralegi, Ainara
AB Polymeric materials, renowned for their lightweight attributes and design adaptability, play a pivotal role in augmenting fuel efficiency and cost-effectiveness in railway vehicle development. The tailored formulation of compounds, specifically designed for additive manufacturing, holds significant promise in expanding the use of these materials. This study centers on poly(lactic acid) (PLA), a natural-based biodegradable polymeric material incorporating diverse halogen-free flame retardants (FRs). Our investigation scrutinizes the printability and fire performance of these formulations, aligning with the European railway standard EN 45545-2. The findings underscore that FR in the condensed phase, including ammonium polyphosphate (APP), expandable graphite (EG), and intumescent systems, exhibit superior fire performance. Notably, FR-inducing hydrolytic degradation, such as aluminum hydroxide (ATH) or EG, reduces polymer molecular weight, significantly impacting PLA’s mechanical performance. Achieving a delicate balance between fire resistance and mechanical properties, formulations with APP as the flame retardant emerge as optimal. This research contributes to understanding the fire performance and printability of 3D-printed PLA compounds, offering vital insights for the rail industry’s adoption of polymeric materials.
SN 2073-4360
YR 2024
FD 2024-04
LK https://hdl.handle.net/11556/4918
UL https://hdl.handle.net/11556/4918
LA eng
NO Aguirresarobe , R , Calafel , I , Villanueva , S , Sanchez , A , Agirre , A , Sukia , I , Esnaola , A & Saralegi , A 2024 , ' Development of Flame-Retardant Polylactic Acid Formulations for Additive Manufacturing ' , Polymers , vol. 16 , no. 8 , 1030 . https://doi.org/10.3390/polym16081030
NO Publisher Copyright: © 2024 by the authors.
DS TECNALIA Publications
RD 29 sept 2024