An investigation on sol–gel treatment to aramid yarn to increase inter-yarn friction

Chu, Ying; Chen, Xiaogang; Wang, Qing; Cui, Shizhong

doi:10.1016/j.apsusc.2014.09.082

Cited by 35 publications

(18 citation statements)

References 35 publications

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“…The surface chemical composition of the treated Kevlar fibre was evaluated by EDX analysis [41]. Table 2 shows C, O, N, Si and O/C ratios after being surface modified by chemical treatments.…”

Section: Elemental Analysismentioning

confidence: 99%

Surface modification of Kevlar fibre fabric and its influence on the properties of Kevlar/epoxy composites

2019

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The present study addresses the enhancement of interfacial interaction between Kevlar and epoxy through surface modification of Kevlar fabric using various chemical treatments. The chemically modified aramid surface was examined by Fourier transformed infrared spectroscopy, energy dispersive spectroscopy, scanning electron microscopy (SEM), dynamic mechanical analysis and wettability characteristics. The Kevlar/epoxy composites were prepared using the hand lay-up process. Furthermore, the influence of surface modification was validated through the mechanical characteristics of Kevlar/epoxy composites. The study reveals that the chemical treatment of the Kevlar surface increases the polar functional groups and improves the interfacial adhesion between fibre and epoxy. The surface energy, work of adhesion and performance of Kevlar composites were studied for treated and untreated fibres. The tensile and flexural moduli were increased up to 38% in treated Kevlar fibre compared with untreated fibre. It was observed from SEM analysis that adhesive failure bonds rely on chemical bonds at the interface of fibre matrix composites and cohesive failure at the fibre matrix was decreased.

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Section: Elemental Analysismentioning

confidence: 99%

Surface modification of Kevlar fibre fabric and its influence on the properties of Kevlar/epoxy composites

2019

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“…These results clearly show the properties strongly depend on the microstructure and morphology of the fibers that requires further investigation. QS 5,[77][78][79][80][81][82] and dynamic yarn pull out 83,84 , influence of twist 85 and inter yarn friction 86 studies are other experiments conducted at the yarn length scale to understand the energy absorption during impact. Most of the yarn transverse impact experiments reported in the literature are focused on determining the transverse wave velocity and the 'V' angle from the images obtained.…”

Section: Yarn Length Scale Experimentsmentioning

confidence: 99%

Recent advances in modeling and experiments of Kevlar ballistic fibrils, fibers, yarns and flexible woven textile fabrics – a review

Sockalingam

Chowdhury

Gillespie

et al. 2016

Textile Research Journal

106

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Ballistic impact onto flexible woven textile fabrics is a complicated multi-scale problem given the structural hierarchy of the materials, anisotropic material behavior, projectile geometry-fabric interactions, impact velocity and boundary conditions. Although this subject has been an active area of research for decades, the fundamental mechanisms such as material failure, dynamic response, multi-axial loading occurring at the lower length scales during impact are not well understood. This paper reviews the recent advances in modeling and experiments of Kevlar ballistic fibrils, fibers, yarns and flexible woven textile fabrics pertinent to the deformation modes occurring during impact and serves to identify topics worthy of further investigation that will advance the basic understanding of the phenomena governing transverse impact. This review also explores on aspects such as homogeneous versus heterogeneous behavior of yarns consisting of individual fibers and the inelastic transverse behavior of the fiber which is not considered in the previous review papers on this topic.

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“…Chu et al. 77 also investigated the effect of different sized TiO 2 /ZnO hydrosols. It has been found that the yarns treated by sub-micro-sized hydrosol exhibit a nearly 50% increase in coefficient of friction compared to neat yarn, while the increase of nano-micro-sized coated yarns is only 10%.…”

Section: Approaches To Increase Junction Rupture Forcementioning

confidence: 99%

“…However, samples with the longest treatment time give the highest static and kinetic coefficients of yarn-yarn friction, which is around 83.6% and 56.7% higher than that for neat yarn. Chu et al 77 also investigated the effect of different sized TiO 2 /ZnO hydrosols. It has been found that the yarns treated by sub-micro-sized hydrosol exhibit a nearly 50% increase in coefficient of friction compared to neat yarn, while the increase of nano-micro-sized coated yarns is only 10%.…”

Section: Approaches To Increase Junction Rupture Force Chemical Treatmentioning

confidence: 99%

An overview of yarn pull-out behavior of woven fabrics

Zhou

Ali

Gong

et al. 2017

Textile Research Journal

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This paper reviews the topic of yarn pull-out on a plain woven fabric. It deals with previous works on experimental testing and theory exploration regarding this process, also including the prominent stick-slip behavior and the associated modeling techniques. Finally, it discusses the advances in chemical treatment and construction modification for the increase in yarn gripping force. The current paper serves as a source of literature for those willing to undertake additional research in this area and for those interested in developing flexible body armor with improved ballistic protection.

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An investigation on sol–gel treatment to aramid yarn to increase inter-yarn friction

Cited by 35 publications

References 35 publications

Surface modification of Kevlar fibre fabric and its influence on the properties of Kevlar/epoxy composites

Surface modification of Kevlar fibre fabric and its influence on the properties of Kevlar/epoxy composites

Recent advances in modeling and experiments of Kevlar ballistic fibrils, fibers, yarns and flexible woven textile fabrics – a review

An overview of yarn pull-out behavior of woven fabrics

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