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 DMA properties of aged a...
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| Format: | Article |
| Language: | English |
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MDPI AG
2021-11-01
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| Series: | Polymers |
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| Online Access: | https://www.mdpi.com/2073-4360/13/22/4037 |
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| author | Michelle Souza Oliveira Fernanda Santos da Luz Fabio da Costa Garcia Filho Artur Camposo Pereira Vinícius de Oliveira Aguiar Henry Alonso Colorado Lopera Sergio Neves Monteiro |
| author_facet | Michelle Souza Oliveira Fernanda Santos da Luz Fabio da Costa Garcia Filho Artur Camposo Pereira Vinícius de Oliveira Aguiar Henry Alonso Colorado Lopera Sergio Neves Monteiro |
| author_sort | Michelle Souza Oliveira |
| collection | DOAJ |
| description | 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 DMA properties 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. |
| first_indexed | 2024-03-10T05:07:06Z |
| format | Article |
| id | doaj.art-8f8d966adf364ba5aecd1c92f45405c6 |
| institution | Directory Open Access Journal |
| issn | 2073-4360 |
| language | English |
| last_indexed | 2024-03-10T05:07:06Z |
| publishDate | 2021-11-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Polymers |
| spelling | doaj.art-8f8d966adf364ba5aecd1c92f45405c62023-11-23T01:10:51ZengMDPI AGPolymers2073-43602021-11-011322403710.3390/polym13224037Dynamic Mechanical Analysis of Thermally Aged Fique Fabric-Reinforced Epoxy CompositesMichelle Souza Oliveira0Fernanda Santos da Luz1Fabio da Costa Garcia Filho2Artur Camposo Pereira3Vinícius de Oliveira Aguiar4Henry Alonso Colorado Lopera5Sergio Neves Monteiro6Department of Materials Science, Military Institute of Engineering—IME, Rio de Janeiro 22290-270, BrazilDepartment of Materials Science, Military Institute of Engineering—IME, Rio de Janeiro 22290-270, BrazilDepartment of Mechanical and Aerospace Engineering, University of California San Diego—UCSD, La Jolla, CA 92093, USADepartment of Materials Science, Military Institute of Engineering—IME, Rio de Janeiro 22290-270, BrazilDepartment of Polymer Science and Technology, Institute of Macromolecules Professor Eloisa Mano—IMA, Rio de Janeiro 21941-598, BrazilCCComposites Laboratory, Universidad de Antioquia—UdeA, Calle 70 n° 52-21, Medellin 050010, ColombiaDepartment of Materials Science, Military Institute of Engineering—IME, Rio de Janeiro 22290-270, BrazilDynamic 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 DMA properties 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.https://www.mdpi.com/2073-4360/13/22/4037fique fabricepoxy compositeDMAaccelerated agingexponentially modified Gauss distribution |
| spellingShingle | Michelle Souza Oliveira Fernanda Santos da Luz Fabio da Costa Garcia Filho Artur Camposo Pereira Vinícius de Oliveira Aguiar Henry Alonso Colorado Lopera Sergio Neves Monteiro Dynamic Mechanical Analysis of Thermally Aged Fique Fabric-Reinforced Epoxy Composites Polymers fique fabric epoxy composite DMA accelerated aging exponentially modified Gauss distribution |
| title | Dynamic Mechanical Analysis of Thermally Aged Fique Fabric-Reinforced Epoxy Composites |
| title_full | Dynamic Mechanical Analysis of Thermally Aged Fique Fabric-Reinforced Epoxy Composites |
| title_fullStr | Dynamic Mechanical Analysis of Thermally Aged Fique Fabric-Reinforced Epoxy Composites |
| title_full_unstemmed | Dynamic Mechanical Analysis of Thermally Aged Fique Fabric-Reinforced Epoxy Composites |
| title_short | Dynamic Mechanical Analysis of Thermally Aged Fique Fabric-Reinforced Epoxy Composites |
| title_sort | dynamic mechanical analysis of thermally aged fique fabric reinforced epoxy composites |
| topic | fique fabric epoxy composite DMA accelerated aging exponentially modified Gauss distribution |
| url | https://www.mdpi.com/2073-4360/13/22/4037 |
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