Dynamic Mechanical Analysis of Thermally Aged Fique Fabric-Reinforced Epoxy Composites

Dynamic mechanical analysis (DMA) is one of the most common methods employed to study a material’s viscoelastic properties. The effect of thermal aging on plain epoxy and a fique fabric-reinforced epoxy composite was investigated by comparing the mass loss, morphologies, and DMAproperties of aged and unaged samples. In fact, thermal aging presents a big challenge for the high-temperature applications of natural fiber composites. In this work, both plain epoxy and fique fabric-reinforced epoxy composite were found to have different molecular mobility. This leads to distinct transition regions, with different changes in intensity caused by external loadings from time-aging. Three exponentially modified Gauss distribution functions (EMGs) were applied to loss factor curves of fique fabric-reinforced epoxy composite and plain epoxy, which allowed identifying three possible mobility ranges. From these results it was proposed that the thermal degradation behavior of natural fibers, especially fique fiber and their composites, might be assessed, based on their structural characteristics and mechanical properties.

• Autores: Colorado Lopera, Henry Alonso; Souza Oliveira, Michelle; Santos da Luz, Fernanda; Costa Garcia Filho, Fabio da; Camposo Pereira, Artur; Oliveira Aguiar, Vinícius de; Neves Monteiro, Sergio
• Tipo de recurso: Article of investigation
• Fecha de publicación: 2021
• Institución: Universidad de Antioquia
• Repositorio: Repositorio UdeA
• Idioma: eng
• OAI Identifier: oai:bibliotecadigital.udea.edu.co:10495/46175
• Acceso en línea: https://hdl.handle.net/10495/46175
• Palabra clave: Fique; Fiber plants; Viscoelastic materials; Plantas de fibra; Materiales viscoelásticos; Compuestos poliméricos; Polymeric composites; Fique fabric; http://id.loc.gov/authorities/subjects/sh85048445; http://id.loc.gov/authorities/subjects/sh85048016; http://id.loc.gov/authorities/subjects/sh85104659; http://id.loc.gov/authorities/subjects/sh88002557; ODS 9: Industria, innovación e infraestructura. Construir infraestructuras resilientes, promover la industrialización inclusiva y sostenible y fomentar la innovación; ODS 12: Producción y consumo responsables. Garantizar modalidades de consumo y producción sostenibles
• Rights: openAccess
• License: http://creativecommons.org/licenses/by/4.0/