Enhancement of a Novel Sizing Agent in Mechanical Properties and Stab/Puncture Resistance of Kevlar Fabrics

Zhao, Hong-Yan; Qiang, Yong-Qin; Peng, Hao‐Kai; Xing, Mengfan; Zhang, Xia-Yun; Lou, Ching‐Wen

doi:10.1007/s12221-021-0432-0

Cited by 5 publications

(2 citation statements)

References 21 publications

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“…When the yarn is pulled to the limit, the puncture part reaches the ‘self-locking’ state, 30 and the knife is tightly held by surrounding yarns, the puncture load increases rapidly to point d. d∼e: When the yarn of the ‘locking’ knife reaches the stress limit, the yarn at the sharp blade is cut off due to shear action, and the yarn at the back of the knife is pulled off due to tensile action. The ‘self-locking’ state is broken, and the force on the knife decreases sharply, 31,32 reaching point e. e∼f: As the knife continues to penetrate downward, the knife repeatedly experiences ‘self-locking’ in the c–d stage and ‘breaking self-locking’ in the d–e stage, and the load correspondingly repeatedly ‘rises to the peak’ and ‘falls to the trough’. In general, the load in the c∼f stage fluctuates with the continuous penetration of the knife.…”

Section: Resultsmentioning

confidence: 99%

Failure mechanism of weft-knitted insertion fabric/Surlyn resin flexible composite for stab resistance

Liu

Sun²,

Zhao

et al. 2022

Textile Research Journal

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In this paper, two kinds of aramid fibers were used to prepare weft-knitted insertion fabrics, flexible Surlyn resin as matrix to prepare reinforced weft-knitted insertion fabrics, the effects of hot-pressing temperature, resin content, pressure and holding time on reinforced weft-knitted insertion fabric were explored. Through lamination and co-curing, the effects of the lamination numbers, preparation methods and lamination sequence on the stab resistance of the multilayer system were studied. The results showed that appropriate hot-pressing temperature, resin content, pressure and holding time can improve the stab resistance by improving the permeability of resin in the fabric. However, over high temperatures, pressure and holding time have a negative impact on the stab resistance or flexibility of the composite; high resin content means higher weight, which is not conducive to human wearing. When the area density is similar, the stab resistance of the co-cured composite is the best, followed by the superposition of single-layer composite, finally is the superposition of film and fabric. Weft-knitted insertion fabrics and reinforced weft-knitted insertion fabrics can dissipate puncture energy through shear force, tensile fracture, friction and deformation of yarn or fabric. In addition, composites also have other energy dissipation pathways such as filament compression splitting, fabric/matrix debonding and matrix delamination.

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Section: Resultsmentioning

confidence: 99%

Failure mechanism of weft-knitted insertion fabric/Surlyn resin flexible composite for stab resistance

Liu

Sun²,

Zhao

et al. 2022

Textile Research Journal

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“…Stab and puncture resistance of a woven Kevlar (brand name of a p -aramid) fabric were investigated by Zhao et al who concentrated on the impact of a sizing agent on the composite’s mechanical properties [ 57 ]. The authors prepared a sizing agent from water-borne epoxy resin, poly(acrylamide) and fatty alcohol polyoxyethylene phosphate potassium salt in which they immersed the fabrics.…”

Section: Reinforced Polymers and Composites For Stab Resistancementioning

confidence: 99%

Stab-Resistant Polymers—Recent Developments in Materials and Structures

Panneke

Ehrmann

2023

Polymers

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Stab-resistant garments have been used for centuries, utilizing metals, paper, or polymeric structures, often inspired by natural structures such as scales. Nowadays, stab-resistant vests or vest inserts are used by police and security personnel, but also by bus drivers, ambulance officers, and other people who are empirically often attacked on duty. Since stab protection garments are often heavy and thus uncomfortable and not well accepted, whether in the form of chain-mail or metal inserts in protective vests, researchers are striving to find lightweight, drapable alternatives, often based on polymeric materials. These research attempts have recently focused on textile fabrics, mostly with impregnation by shear-thickening fluids (STFs) or ceramic coatings, as well as on lightweight composites. The first studies on 3D printed polymeric objects with tailored shapes, as well as theoretical investigations of the stab-protective effect of different materials, have been published throughout the last years. Here, we discuss different measurement methods, including dynamic and quasistatic methods, and correlations of stab-resistance with other physical properties, before we give an overview of recent developments of stab-resistant polymers, using different materials/material combinations and structures.

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Surface Modification and Antibacterial Functionalization of Polyester Fabrics Using Deep Eutectic Solvent and Its Composite Solution

Zheng,

Yang,

Yang

et al. 2024

Fibers Polym

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Enhancement of a Novel Sizing Agent in Mechanical Properties and Stab/Puncture Resistance of Kevlar Fabrics

Cited by 5 publications

References 21 publications

Failure mechanism of weft-knitted insertion fabric/Surlyn resin flexible composite for stab resistance

Failure mechanism of weft-knitted insertion fabric/Surlyn resin flexible composite for stab resistance

Stab-Resistant Polymers—Recent Developments in Materials and Structures

Surface Modification and Antibacterial Functionalization of Polyester Fabrics Using Deep Eutectic Solvent and Its Composite Solution

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