Critical length and interfacial strength of PALF and coir fiber incorporated in epoxy resin matrix

Luz, Fernanda Santos da; Ramos, Flávio James Humberto Tommasini Vieira; Nascimento, Lúcio Fábio Cassiano; Figueiredo, André Ben-Hur da Silva

doi:10.1016/j.jmrt.2018.04.025

Cited by 69 publications

(34 citation statements)

References 18 publications

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“…In fact, the PALF was not treated; it was used as received aiming for a low degree of industrialization and, consequently, a low production cost. According to previously obtained results by the authors [ 27 ], a good interfacial adhesion was attained for this composite even without any fiber treatment. Then, composites with 30 vol % of continuous and aligned fibers and 70 vol % of epoxy were prepared by the hand lay-up process, presented schematically in Figure 2 .…”

Section: Methodssupporting

confidence: 76%

“…The reason for the unexpected ballistic performance of natural fiber composites is that the role played by the MAS second layer in impact energy dissipation depends on the fiber’s ability to capture ceramic/bullet fragments, but not on the fiber strength [ 24 ]. In addition, the articles cited by Benzait and Trabzon [ 10 ] and other recent works [ 25 , 26 , 27 , 28 , 29 , 30 , 31 , 32 , 33 ] also confirmed the superior ballistic performance of natural fiber composites as an MAS second layer. It is worth mentioning the significant number of publications focused on ballistic performance of hybrid composites reinforced with synthetic and natural fibers [ 34 , 35 , 36 , 37 , 38 ].…”

Section: Introductionmentioning

confidence: 62%

“…Although the use of natural fiber composites in ballistic armors has been reported in many papers [ 13 , 14 , 15 , 16 , 17 , 18 , 19 , 20 , 21 , 22 , 23 , 24 , 25 , 26 , 27 , 28 , 29 , 30 , 31 , 32 ], most of the published work thus far involves a possible third layer in the MAS. This layer is an aluminum alloy, which compromises the armor vest weight.…”

Section: Introductionmentioning

confidence: 99%

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Composites with Natural Fibers and Conventional Materials Applied in a Hard Armor: A Comparison

et al. 2020

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Natural-fiber-reinforced polymer composites have recently drawn attention as new materials for ballistic armor due to sustainability benefits and lower cost as compared to conventional synthetic fibers, such as aramid and ultra-high-molecular-weight polyethylene (UHMWPE). In the present work, a comparison was carried out between the ballistic performance of UHMWPE composite, commercially known as Dyneema, and epoxy composite reinforced with 30 vol % natural fibers extracted from pineapple leaves (PALF) in a hard armor system. This hard armor system aims to provide additional protection to conventional level IIIA ballistic armor vests, made with Kevlar, by introducing the PALF composite plate, effectively changing the ballistic armor into level III. This level of protection allows the ballistic armor to be safely subjected to higher impact projectiles, such as 7.62 mm caliber rifle ammunition. The results indicate that a hard armor with a ceramic front followed by the PALF/epoxy composite meets the National Institute of Justice (NIJ) international standard for level III protection and performs comparably to that of the Dyneema plate, commonly used in armor vests.

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Section: Methodssupporting

confidence: 76%

Section: Introductionmentioning

confidence: 62%

Section: Introductionmentioning

confidence: 99%

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Composites with Natural Fibers and Conventional Materials Applied in a Hard Armor: A Comparison

et al. 2020

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“…Among these NLFs, both the pineapple leaf fiber (PALF) and the coir fiber are extracted from leftover parts of corresponding plant and so considered as waste materials. This makes them interesting fibers to be used in composites, not only because of environmental sustainability as biodegradable and renewable resources, but also for economical reasons 12,13 . However, the use of NLFs in composites instead of synthetic fibers has its own drawbacks.…”

Section: Introductionmentioning

confidence: 99%

Evaluation of Dynamic Mechanical Properties of PALF and Coir Fiber Reinforcing Epoxy Composites

2018

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The growing interest in natural lignocellulosic fibers (NLFs) is associated not only with environmental benefits but also with technical, economical and social advantages. Among the NLFs, the coir fiber and pineapple leaf fiber (PALF) are low-cost and widely available waste materials. The present work investigated the dynamic mechanical properties, by means of DMA tests, of these two different fibers as reinforcement of epoxy matrix composites. The influence on DMA properties of composites by the volume fraction and the configuration form, mat or aligned coir fiber, were also evaluated. The results showed higher E' and E" moduli values and an increase in T g with the incorporation of PALF in epoxy matrix, which indicate a superior dynamic mechanical properties for this composite in comparison to the neat epoxy resin. The experimental data also revealed a stronger interfacial interaction of PALF/ epoxy when compared to coir fiber/epoxy. It was also found a lower tan δ value exhibited by higher volume fractions of aligned coir fibers in epoxy matrix.

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“…Various methods based on the physicochemical treatment of matrix and filler materials are used to obtain high-performance composites [8][9][10]. In recent years, natural fiber (NF)-reinforced EP composites have garnered significant research attention for structural applications [11][12][13][14][15][16]. These materials can be applied to the automotive industry, sports goods, and aerospace where light-weight 2 of 16 components are needed [5].…”

Section: Introductionmentioning

confidence: 99%

Surface Modification of Bamboo Fibers to Enhance the Interfacial Adhesion of Epoxy Resin-Based Composites Prepared by Resin Transfer Molding

et al. 2019

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Bamboo fibers (BFs)-reinforced epoxy resin (EP) composites are prepared by resin transfer molding (RTM). The influence of BFs surface modification (NaOH solution or coupling agents, i.e., KH550 and KH560) on interfacial properties of BFs/EP composites is systematically investigated. The synergistic effect of hydrolysis, peeling reaction of BFs, and the condensation reaction of hydrolyzed coupling agents are confirmed by FTIR. Scanning electron microscopy (SEM) and atomic force microscopy (AFM) reveal that the interfacial compatibility of NaOH- and silane-modified BFs/EP composites was significantly improved. KH550-modified BFs/EP composite renders optimal tensile, flexural, and impact strength values of 68 MPa, 86 MPa, and 226 J/m. The impact resistance mechanism at the interface of BFs/EP composites was proposed. Moreover, the dynamic mechanical properties, creep behavior, and differential scanning calorimetry of BFs/EP composites have also been carried out to understand thermal stabilities. Overall, the surface-modified BFs-reinforced EP composites exhibited superior interfacial bonding.

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Critical length and interfacial strength of PALF and coir fiber incorporated in epoxy resin matrix

Cited by 69 publications

References 18 publications

Composites with Natural Fibers and Conventional Materials Applied in a Hard Armor: A Comparison

Composites with Natural Fibers and Conventional Materials Applied in a Hard Armor: A Comparison

Evaluation of Dynamic Mechanical Properties of PALF and Coir Fiber Reinforcing Epoxy Composites

Surface Modification of Bamboo Fibers to Enhance the Interfacial Adhesion of Epoxy Resin-Based Composites Prepared by Resin Transfer Molding

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