Autor según el artículo: Konuray, Osman; Sola, Arnau; Bonada, Jordi; Tercjak, Agnieszka; Fabregat-Sanjuan, Albert; Fernandez-Francos, Xavier; Ramis, Xavier;
Departamento: Enginyeria Mecànica
Autor/es de la URV: Fabregat Sanjuan, Albert / Fernández Francos, Xavier
Palabras clave: Thermosets Stereolithography Resin Kinetics Interpenetrating polymer network Hybrid photopolymerization Epoxy Dual-curing Digital light processing Cure Composites Anhydride
Resumen: Versatile acrylate-epoxy hybrid formulations are becoming widespread in photo/thermal dual-processing scenarios, especially in 3D printing applications. Usually, parts are printed in a stereolithography or digital light processing (DLP) 3D printer, after which a thermal treatment would bestow the final material with superior mechanical properties. We report the successful formulation of such a hybrid system, consisting of a commercial 3D printing acrylate resin modified by an epoxy-anhydride mixture. In the final polymeric network, we observed segregation of an epoxy-rich phase as nano-domains, similar to what was observed in a previous work. However, in the current work, we show the effectiveness of a coupling agent added to the formulation to mitigate this segregation for when such phase separation is undesired. The hybrid materials showed significant improvement of Young's modulus over the neat acrylate. Once the flexible, partially-cured material was printed with a minimal number of layers, it could be molded into a complex form and thermally cured. Temporary shapes were readily programmable on this final material, with easy shape recovery under mild temperatures. Inspired by repairable 3D printed materials described recently, we manufactured a large object by printing its two halves, and then joined them covalently at the thermal cure stage with an apparently seamless union.
Áreas temáticas: Physics, condensed matter Physics, applied Metallurgy & metallurgical engineering Materials science, multidisciplinary Materials science (miscellaneous) Materials science (all) Condensed matter physics Chemistry, physical
Acceso a la licencia de uso: https://creativecommons.org/licenses/by/3.0/es/
Direcció de correo del autor: xavier.fernandez@urv.cat a.fabregat@urv.cat
Identificador del autor: 0000-0002-3492-2922 0000-0002-2878-1369
Fecha de alta del registro: 2024-07-27
Versión del articulo depositado: info:eu-repo/semantics/publishedVersion
Enlace a la fuente original: https://www.mdpi.com/1996-1944/14/16/4544
URL Documento de licencia: https://repositori.urv.cat/ca/proteccio-de-dades/
Referencia al articulo segun fuente origial: Materials. 14 (16):
Referencia de l'ítem segons les normes APA: Konuray, Osman; Sola, Arnau; Bonada, Jordi; Tercjak, Agnieszka; Fabregat-Sanjuan, Albert; Fernandez-Francos, Xavier; Ramis, Xavier; (2021). Cost-Effectively 3D-Printed Rigid and Versatile Interpenetrating Polymer Networks. Materials, 14(16), -. DOI: 10.3390/ma14164544
DOI del artículo: 10.3390/ma14164544
Entidad: Universitat Rovira i Virgili
Año de publicación de la revista: 2021
Tipo de publicación: Journal Publications