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Rheological and mechanical characterization of dual-curing thiol-acrylate-epoxy thermosets for advanced applications

  • Datos identificativos

    Identificador: imarina:5671696
    Autores:
    Russo CFernández-Francos XDe la Flor S
    Resumen:
    © 2019 by the authors. Mechanical and rheological properties of novel dual-curing system based on sequential thiol-acrylate and thiol-epoxy reactions are studied with the aim of addressing the obtained materials to suitable advanced applications. The crosslinking process is studied by rheological analysis in order to determine conversion at gelation and the critical ratio. These parameters are used to discuss the intermediate material structure for each acrylate proportion and their possible application in the context of dual-curing and multi-step processing scenarios. Results from dynamo-mechanical analysis and mechanical testing demonstrate the high versatility materials under investigation and revealed a wide range of achievable final properties by simply varying the proportion between acrylate and thiol group. The intermediate stability between curing stages has been analysed in terms of their thermal and mechanical properties, showing that these materials can be stored at different temperatures for a relevant amount of time without experiencing significant effects on the processability. Experimental tests were made to visually demonstrate the versatility of these materials. Qualitative tests on the obtained materials confirm the possibility of obtaining complex shaped samples and highlight interesting shape-memory and adhesive properties.
  • Otros:

    Autor según el artículo: Russo C; Fernández-Francos X; De la Flor S
    Departamento: Enginyeria Mecànica
    e-ISSN: 2073-4360
    Autor/es de la URV: De la Flor Lopez, Silvia / Fernández Francos, Xavier
    Palabras clave: Thiol Systems Shape-memory polymer Polymer networks Kinetics Epoxy Dual-curing Adhesive Acrylate shape-memory polymer epoxy dual-curing adhesive acrylate
    Resumen: © 2019 by the authors. Mechanical and rheological properties of novel dual-curing system based on sequential thiol-acrylate and thiol-epoxy reactions are studied with the aim of addressing the obtained materials to suitable advanced applications. The crosslinking process is studied by rheological analysis in order to determine conversion at gelation and the critical ratio. These parameters are used to discuss the intermediate material structure for each acrylate proportion and their possible application in the context of dual-curing and multi-step processing scenarios. Results from dynamo-mechanical analysis and mechanical testing demonstrate the high versatility materials under investigation and revealed a wide range of achievable final properties by simply varying the proportion between acrylate and thiol group. The intermediate stability between curing stages has been analysed in terms of their thermal and mechanical properties, showing that these materials can be stored at different temperatures for a relevant amount of time without experiencing significant effects on the processability. Experimental tests were made to visually demonstrate the versatility of these materials. Qualitative tests on the obtained materials confirm the possibility of obtaining complex shaped samples and highlight interesting shape-memory and adhesive properties.
    Áreas temáticas: Polymers and plastics Polymer science Odontología General chemistry Farmacia Engenharias ii Ciências biológicas ii Chemistry (miscellaneous) Chemistry (all) Biotecnología Astronomia / física
    Acceso a la licencia de uso: thttps://creativecommons.org/licenses/by/3.0/es/
    ISSN: 20734360
    Direcció de correo del autor: xavier.fernandez@urv.cat silvia.delaflor@urv.cat
    Identificador del autor: 0000-0002-3492-2922 0000-0002-6851-1371
    Fecha de alta del registro: 2023-02-18
    Volumen de revista: 11
    Versión del articulo depositado: info:eu-repo/semantics/publishedVersion
    Enlace a la fuente original: https://www.mdpi.com/2073-4360/11/6/997
    Referencia al articulo segun fuente origial: Polymers. 11 (6):
    Referencia de l'ítem segons les normes APA: Russo C; Fernández-Francos X; De la Flor S (2019). Rheological and mechanical characterization of dual-curing thiol-acrylate-epoxy thermosets for advanced applications. Polymers, 11(6), -. DOI: 10.3390/polym11060997
    URL Documento de licencia: https://repositori.urv.cat/ca/proteccio-de-dades/
    DOI del artículo: 10.3390/polym11060997
    Entidad: Universitat Rovira i Virgili
    Año de publicación de la revista: 2019
    Tipo de publicación: Journal Publications
  • Palabras clave:

    Chemistry (Miscellaneous),Polymer Science,Polymers and Plastics
    Thiol
    Systems
    Shape-memory polymer
    Polymer networks
    Kinetics
    Epoxy
    Dual-curing
    Adhesive
    Acrylate
    shape-memory polymer
    epoxy
    dual-curing
    adhesive
    acrylate
    Polymers and plastics
    Polymer science
    Odontología
    General chemistry
    Farmacia
    Engenharias ii
    Ciências biológicas ii
    Chemistry (miscellaneous)
    Chemistry (all)
    Biotecnología
    Astronomia / física
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