Aramid fibers

Ertekin, Mustafa

doi:10.1016/b978-0-08-101871-2.00007-2

Cited by 32 publications

(15 citation statements)

References 2 publications

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“…In general, aramid fibers have a negative influence on the toughness of porous asphalt mixtures compared to both virgin binder and polymer-modified bitumen if used with same percentage of bitumen. The reductions in energy parameters are noteworthy which is in agreement with the previous study that utilized aramid plus polyolefin fibers [ 19 ]. It was concluded that the effects as compared to the control mixtures are not significant.…”

Section: Resultssupporting

confidence: 91%

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Laboratory Characterization of Porous Asphalt Mixtures with Aramid Fibers

2021

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Recent studies have shown that fibers improve the performance of porous asphalt mixtures. In this study, the influence of four different fibers, (a) regular aramid fiber (RegAR), (b) aramid fiber with latex coating (ARLat), (c) aramid fiber with polyurethane coating (ARPoly), (d) aramid fiber of length 12 mm (AR12) was evaluated on abrasion resistance and toughness of the mixtures. The functional performance was estimated using permeability tests and the mechanical performance was evaluated using the Cantabro test and indirect tensile strength tests. The parameters such as fracture energy, post cracking energy, and toughness were obtained through stress-strain plots. Based on the analysis of results, it was concluded that the addition of ARLat fibers enhanced the abrasion resistance of the mixtures. In terms of ITS, ARPoly and RegAR have positively influenced mixtures under dry conditions. However, the mixtures with all aramid fibers were found to have adverse effects on the ITS under wet conditions and energy parameters of porous asphalt mixtures with the traditional percentages of bitumen in the mixture used in Spain (i.e., approximately 4.5%).

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Section: Resultssupporting

confidence: 91%

“…Aramid fibers are synthetic fibers with long-chain synthetic polyamide and more than 85% of amid are linked directly to aromatic rings [ 18 , 19 ]. These types of fiber offer high resistance towards heat and organic solvents and they degrade at a very high temperature of 500 °C [ 20 ].…”

Section: Introductionmentioning

confidence: 99%

Laboratory Characterization of Porous Asphalt Mixtures with Aramid Fibers

2021

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“…The fibres are lightweight, strong, and tough, making them very useful in aeronautics. Such as Kevlar 49, which exhibits high stiffness, and Kevlar 29, with low stiffness [ 50 ].…”

Section: Natural and Synthetic Fibersmentioning

confidence: 99%

Physical, Mechanical and Perforation Resistance of Natural-Synthetic Fiber Interply Laminate Hybrid Composites

et al. 2022

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Natural and synthetic fibres have emerged in high demand due to their excellent properties. Natural fibres have good mechanical properties and are less expensive, making them a viable substitute for synthetic fibers. Owing to certain drawbacks such as their inconsistent quality and hydrophilic nature, researchers focused on incorporating these two fibres as an alternative to improve the limitations of the single fibre. This review focused on the interply hybridisation of natural and synthetic fibres into composites. Natural fibres and their classifications are discussed. The physical and mechanical properties of these hybrid composites have also been included. A full discussion of the mechanical properties of natural/synthetic fibre hybrid composites such as tensile, flexural, impact, and perforation resistance, as well as their failure modes, is highlighted. Furthermore, the applications and future directions of hybrid composites have been described in details.

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“…P‐aramid fiber belongs to the class of high‐performance fibers due to its excellent thermal and mechanical characteristics such as good thermal resistance, modulus, and tenacity 1,2 . Therefore it has vast applications in fire‐retardant suits, soft body armors, racing suits and military vests 3,4 …”

Section: Introductionmentioning

confidence: 99%

An investigation into the fastness and mechanical properties of p‐aramid fabric dyed with disperse dye

Iqbal

Rehman

Siddiqui

et al. 2021

Color Research & Application

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The p‐aramid fiber is mostly used in high tech applications such as protective clothing, cut resistant gloves, heat resistant suits, etc. due to its extraordinary mechanical and thermal properties. On the other hand, it loses its strength upon exposure to UV (ultraviolet) light. The main purpose of this work is to optimize p‐aramid fabrics dyeing with disperse dyes and study the impact of dye on its properties such as shade depth (K/S), fastness, and UV degradation. The batch process is used to dye the fabric with disperse dyes that give high K/S value. The ANOVA (analysis of variance) is performed for the result investigation, depicting the input and output variables relation. The mechanical loss of p‐aramid on exposure to UV was confirmed by bursting strength showing 28% strength loss in comparison to the dyed p‐aramid fabric having 15% loss in strength. This was further endorsed by scanning electron microscope and X‐ray diffraction by investigating the changes in surface morphology and crystallinity on exposure to UV simultaneously to confirm the hypothesis that dyeing reduces the degradation upon exposure to UV light.

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Aramid fibers

Cited by 32 publications

References 2 publications

Laboratory Characterization of Porous Asphalt Mixtures with Aramid Fibers

Laboratory Characterization of Porous Asphalt Mixtures with Aramid Fibers

Physical, Mechanical and Perforation Resistance of Natural-Synthetic Fiber Interply Laminate Hybrid Composites

An investigation into the fastness and mechanical properties of p‐aramid fabric dyed with disperse dye

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