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Keywords = fique-fiber woven fabric

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18 pages, 21621 KB  
Article
Thermal and Colorimetric Parameter Evaluation of Thermally Aged Materials: A Study of Diglycidyl Ether of Bisphenol A/Triethylenetetramine System and Fique Fabric-Reinforced Epoxy Composites
by Michelle Souza Oliveira, Artur Camposo Pereira, Henry Alonso Colorado, Natalin Michele Meliande, Juliana dos Santos Carneiro da Cunha, André Ben-Hur da Silva Figueiredo and Sergio Neves Monteiro
Polymers 2023, 15(18), 3761; https://doi.org/10.3390/polym15183761 - 14 Sep 2023
Cited by 4 | Viewed by 2292
Abstract
The main modifications of thermal and colorimetric parameters after thermal aging of DGEBA/TETA system (plain epoxy) and fique-fiber woven fabric-reinforced epoxy composites are described. As a preliminary study, thermal analysis was carried out on epoxy matrix composites reinforced with 15, 30, 40 and [...] Read more.
The main modifications of thermal and colorimetric parameters after thermal aging of DGEBA/TETA system (plain epoxy) and fique-fiber woven fabric-reinforced epoxy composites are described. As a preliminary study, thermal analysis was carried out on epoxy matrix composites reinforced with 15, 30, 40 and 50% fique-fiber woven fabric. After this previous analysis, the 40% composite was chosen to be thermally aged, at 170 °C. Three exposure times were considered, namely, 0, 72, 120 and 240 h. Samples were studied by thermogravimetric analysis (TGA), differential thermal analysis (DTA), differential scanning calorimetry (DSC), thermomechanical analysis (TMA) and colorimetry analysis. Significant color changes were observed after thermal aging combined with oxidation. It was also found that the thermal behavior of the plain epoxy showed greater resistance after thermal exposure. By contrast, the composites were more sensitive to temperature variations as a result of thermal stresses induced between fique fibers and the epoxy matrix. Full article
(This article belongs to the Special Issue Resin-Based Polymer Materials and Related Applications)
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10 pages, 2994 KB  
Article
Fique Fabric: A Promising Reinforcement for Polymer Composites
by Sergio Neves Monteiro, Foluke Salgado de Assis, Carlos Luiz Ferreira, Noan Tonini Simonassi, Ricardo Pondé Weber, Michelle Souza Oliveira, Henry A. Colorado and Artur Camposo Pereira
Polymers 2018, 10(3), 246; https://doi.org/10.3390/polym10030246 - 28 Feb 2018
Cited by 119 | Viewed by 9907
Abstract
A relatively unknown natural fiber extracted from the leaves of the fique plant, native of the South American Andes, has recently shown potential as reinforcement of polymer composites for engineering applications. Preliminary investigations indicated a promising substitute for synthetic fibers, competing with other [...] Read more.
A relatively unknown natural fiber extracted from the leaves of the fique plant, native of the South American Andes, has recently shown potential as reinforcement of polymer composites for engineering applications. Preliminary investigations indicated a promising substitute for synthetic fibers, competing with other well-known natural fibers. The fabric made from fique fibers have not yet been investigated as possible composite reinforcement. Therefore, in the present work a more thorough characterization of fique fabric as a reinforcement of composites with a polyester matrix was performed. Thermal mechanical properties of fique fabric composites were determined by dynamic mechanical analysis (DMA). The ballistic performance of plain woven fique fabric-reinforced polyester matrix composites was investigated as a second layer in a multilayered armor system (MAS). The results revealed a sensible improvement in thermal dynamic mechanical behavior. Both viscoelastic stiffness and glass transition temperature were increased with the amount of incorporated fique fabric. In terms of ballistic results, the fique fabric composites present a performance similar to that of the much stronger KevlarTM as an MAS second layer with the same thickness. A cost analysis indicated that armor vests with fique fabric composites as an MAS second layer would be 13 times less expensive than a similar creation made with Kevlar™. Full article
(This article belongs to the Special Issue Textile and Textile-Based Materials)
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