How can be useful Felfil for your research? Here it was used to 3D printed cork/polyurethane composite foams

The Felfil extrusion system has been used, from the beginning, by university students and researchers to experiment and validate their theses regarding the characterization of specific materials: creating filaments loaded with silver or organic materials.

This is the case of a research conducted in 2019 by the Aveiro Institute of Materials and the Department of Chemistry in Portugal. Specifically, the study focuses on the potential application of 3D printed polyurethane foams for thermal uses with improved mechanical properties. In the researchers’ work, a preliminary approach was adopted using cork to enhance the properties of the resulting 3D printed foams.

The addition of cork has been shown to reduce the density and thermal conductivity of the resulting foams. The stiffness of the resulting composite foams was also reduced, but without compromising thermal stability. The results indicate that the addition of cork may not compromise the performance of 3D printed polyurethane (TPU) foams. In addition to thermal insulation properties, the elastomeric behavior of the foams could find applications that combine thermal insulation with damping properties.

Furthermore, the text emphasizes the importance of viscoelastic properties in sound damping and vibration applications, highlighting the positive effects of cork in reducing vibrations in metal structures. It also refers to the emerging use of 3D printing to produce polyurethane foams, opening opportunities to design materials with new shapes and dimensions.

The experimental process was complex and articulated, starting from the preparation of cork-containing filaments with Felfil Evo and Felfil Spooler, and the production of 3D printed foams. Analyses include SEM characterizations of the filaments, dynamic mechanical tests (DMA), thermogravimetric analyses (TGA), and evaluations of the thermal and mechanical properties of the 3D printed foams.

Finally, the results indicate that the addition of cork significantly influences the properties of 3D printed polyurethane foams, highlighting the interesting prospect of using these materials for thermal and damping applications. For the complete paper, please refer to the following page: link to the paper.

 

CRediT authorship contribution statement N. Gama: Conceptualization, Formal analysis, Investigation, Methodology, Validation, Writing – original draft, Writing – review & editing. A. Ferreira: Funding acquisition, Supervision, Validation, Writing – review & editing. A. Barros-Timmons: Conceptualization, Formal analysis, Funding acquisition, Investigation, Methodology, Supervision, Validation, Writing – original draft, Writing – review & editing. 

CRediT authorship contribution statement N. Gama: Conceptualization, Formal analysis, Investigation, Methodology, Validation, Writing – original draft, Writing – review & editing. A. Ferreira: Funding acquisition, Supervision, Validation, Writing – review & editing. A. Barros-Timmons: Conceptualization, Formal analysis, Funding acquisition, Investigation, Methodology, Supervision, Validation, Writing – original draft, Writing – review & editing