Print Email Facebook Twitter 3D Printing of a Self-Healing Thermoplastic Polyurethane through FDM: From Polymer Slab to Mechanical Assessment Title 3D Printing of a Self-Healing Thermoplastic Polyurethane through FDM: From Polymer Slab to Mechanical Assessment Author Ritzen, L. (TU Delft Novel Aerospace Materials) Montano, V. (TU Delft Novel Aerospace Materials) Garcia, Santiago J. (TU Delft Novel Aerospace Materials) Date 2021 Abstract The use of self-healing (SH) polymers to make 3D-printed polymeric parts offers the po-tential to increase the quality of 3D-printed parts and to increase their durability and damage toler-ance due to their (on-demand) dynamic nature. Nevertheless, 3D-printing of such dynamic poly-mers is not a straightforward process due to their polymer architecture and rheological complexity and the limited quantities produced at lab-scale. This limits the exploration of the full potential of self-healing polymers. In this paper, we present the complete process for fused deposition model-lingof a room temperature self-healing polyurethane. Starting from the synthesis and polymer slab manufacturing, we processed the polymer into a continuous filament and 3D printed parts. For the characterization ofthe 3D printed parts,we used a compression cut test, which proved useful when limited amount of material is available. The test was able to quasi-quantitatively assess both bulk and 3D printed samples and their self-healing behavior. The mechanical and healing behavior of the3D printed self-healing polyurethane was highly similar to that of the bulk SH polymer. This indicates that the self-healing property of the polymer was retained even after multiple processing steps and printing. Compared to a commercial 3D-printing thermoplastic polyurethane, the self-healing polymer displayed a smaller mechanical dependency on the printing conditions with the added value of healing cuts at room temperature. Subject self-healing3D printingcut testpolyurethane To reference this document use: http://resolver.tudelft.nl/uuid:565dfbbb-f64f-4a90-b501-881cdf1de8c5 DOI https://doi.org/10.3390/polym13020305 ISSN 2073-4360 Source Polymers, 13 (2), 1-21 Part of collection Institutional Repository Document type journal article Rights © 2021 L. Ritzen, V. Montano, Santiago J. Garcia Files PDF polymers_13_00305_v3.pdf 3.86 MB Close viewer /islandora/object/uuid:565dfbbb-f64f-4a90-b501-881cdf1de8c5/datastream/OBJ/view