Autor segons l'article: Fabregat-Sanjuan, Albert; Fernandez-Francos, Xavier; Ferrando-Piera, Francesc;
Departament: Enginyeria Mecànica
Autor/s de la URV: Fabregat Sanjuan, Albert / Fernández Francos, Xavier
Paraules clau: Thermosetting composites Thermosets Thermal properties Temperature Structure-property relationships Structure-properties relationships Stresses Optimization Kinetics Heat transfer Heat release Exothermicity Epoxy Dual curing Curing system Curing rates Curing Cure Crosslinking Composites material Composites Composite processing Carbon fibers
Resum: Control of curing rate and exothermicity during processing of thermosetting composite materials is essential in order to minimize the formation of internal stresses leading to mechanical and dimensional defects in the samples, especially in thick composite samples. It was recently proposed that sequential heat release, an approach based on the kinetic control of the curing sequence of dual-curing thermosets, would enable a step-wise release of the reaction heat and therefore a better control of conversion and temperature profiles during the crosslinking stage. In this article, it is shown experimental proof of this concept obtained by means of an instrumented mold that can be used for the processing of small samples with and without carbon fiber reinforcement. Safe processing scenarios have been defined by numerical simulation using a simplified two-dimensional heat transfer model and validated experimentally.
Àrees temàtiques: Surfaces, coatings and films Química Polymers and plastics Polymer science Odontología Nutrição Medicina ii Medicina i Materials chemistry Materiais Interdisciplinar Geociências General chemistry Farmacia Ensino Engenharias iv Engenharias iii Engenharias ii Engenharias i Ciências biológicas iii Ciências biológicas ii Ciências biológicas i Ciências ambientais Ciências agrárias i Ciência de alimentos Ciência da computação Chemistry (miscellaneous) Chemistry (all) Biotecnología Astronomia / física
Accès a la llicència d'ús: https://creativecommons.org/licenses/by/3.0/es/
Adreça de correu electrònic de l'autor: xavier.fernandez@urv.cat a.fabregat@urv.cat
Identificador de l'autor: 0000-0002-3492-2922 0000-0002-2878-1369
Data d'alta del registre: 2024-09-07
Versió de l'article dipositat: info:eu-repo/semantics/publishedVersion
Enllaç font original: https://onlinelibrary.wiley.com/doi/full/10.1002/app.52009
URL Document de llicència: https://repositori.urv.cat/ca/proteccio-de-dades/
Referència a l'article segons font original: Journal Of Applied Polymer Science. 139 (17):
Referència de l'ítem segons les normes APA: Fabregat-Sanjuan, Albert; Fernandez-Francos, Xavier; Ferrando-Piera, Francesc; (2022). Controlled composite processing based on off-stoichiometric thiol-epoxy dual-curing systems with sequential heat release (SHR). Journal Of Applied Polymer Science, 139(17), -. DOI: 10.1002/app.52009
DOI de l'article: 10.1002/app.52009
Entitat: Universitat Rovira i Virgili
Any de publicació de la revista: 2022
Tipus de publicació: Journal Publications
Repositori URV