Author, as appears in the article.: Fabregat-Sanjuan, Albert; Fernandez-Francos, Xavier; Ferrando-Piera, Francesc;
Department: Enginyeria Mecànica
URV's Author/s: Fabregat Sanjuan, Albert / Fernández Francos, Xavier
Keywords: 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
Abstract: 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.
Thematic Areas: 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
licence for use: https://creativecommons.org/licenses/by/3.0/es/
Author's mail: xavier.fernandez@urv.cat a.fabregat@urv.cat
Author identifier: 0000-0002-3492-2922 0000-0002-2878-1369
Record's date: 2024-09-07
Papper version: info:eu-repo/semantics/publishedVersion
Link to the original source: https://onlinelibrary.wiley.com/doi/full/10.1002/app.52009
Licence document URL: https://repositori.urv.cat/ca/proteccio-de-dades/
Papper original source: Journal Of Applied Polymer Science. 139 (17):
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
Article's DOI: 10.1002/app.52009
Entity: Universitat Rovira i Virgili
Journal publication year: 2022
Publication Type: Journal Publications
Repositori URV