Characterization of the rheological and mechanical properties of shear thickening fluid-coated Twaron® composite

Baharvandi, Hamid Reza; Heydari, Mina Saeedi; Kordani, Naser; Alebooyeh, Morteza; Alizadeh, Mohammad; Khaksari, Peiman

doi:10.1080/00405000.2016.1168091

Cited by 18 publications

(7 citation statements)

References 31 publications

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“…For example, the change in diameter and shape of the silica particle may result in significant changes in the rheological behavior of the colloid . Baharvandi et al also showed a parallel shift of the shear viscosity versus shear rate curve when the particle size decreased from 60 to 12 nm. This is especially true when the ultrasonicator power amplitude was increased from 20 to 60% and the sonication time was increased from 5 to 7 h. Another example is that the shear‐thickening behavior is extremely sensitive to the filler loading.…”

Section: Resultsmentioning

confidence: 99%

High‐velocity impact performance of shear‐thickening fluid/kevlar composites made by the padding process

et al. 2018

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Padding is known to enhance the dyeing of fabric. In this study, shear‐thickening fluid (STF)/multilayer Kevlar composites were constructed through a padding process. This paper describes the padding process used, and discusses the ballistic impact and stab resistance of the resulting composites. Padding STF into Kevlar fabric is better than impregnation. The resulting composites are thinner, lighter, and more flexible than conventional Kevlar body armor, while providing similar protection. Previous studies have shown that padding improves the low‐velocity impact resistance of single‐layer Kevlar. This study demonstrates that padding also improves the high‐velocity impact performance of STF/multilayer Kevlar composites. POLYM. COMPOS., 40:3040–3049, 2019. © 2018 Society of Plastics Engineers

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Section: Resultsmentioning

confidence: 99%

High‐velocity impact performance of shear‐thickening fluid/kevlar composites made by the padding process

et al. 2018

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“…The STFs were made by dispersing 12 and 60 nm silica particles in PEG400 at three different concentrations (15, 25, and 35 wt %), and the quasi‐static penetration resistance of aramid/STF composites were examined. Results showed that with the increase of the concentration and the reduction of the size of the silica particle, both the ultimate viscosities and the maximum energy absorption of aramid/STF composite were enhanced . Silica and PMMA particles possess different hardness.…”

Section: Introductionmentioning

confidence: 98%

Effects of silica morphology on the shear‐thickening behavior of shear thickening fluids and stabbing resistance of fabric composites

Wei

Dong²,

Wang

et al. 2019

J of Applied Polymer Sci

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Shear‐thickening fluid (STF) refers to a system where nonaggregating solid particles are suspended in a specific fluid. Due to its unique viscosity variation, STFs have attracted a lot of attention as soft body armor materials for impact protection. In this work, two kinds of STFs were designed using polyethylene glycol (PEG) and spherical or irregularly shaped silica particles. Rheological results showed that shear thickening can even occur at lower shear rates in the irregularly shaped silica‐based STF; however, the thickening range of the spherical silica‐based STF was broader. Meanwhile, the composites prepared with STFs and aramid fabrics exhibited better antistab properties than neat fabrics. Compared to composite prepared with irregularly shaped silica‐based STF, spherical silica‐based STF/aramid composite had better stabbing resistance. In addition to the binding effect of silica particles to the fiber bundle, it was considered that when the fabric composite was subjected to impact, spherical particles were easier to slide so that the STF was more likely to be thickened to achieve a greater viscosity, resulting in the better stabbing resistance performance. Our studies will provide guidance for the design of the high‐performance soft body armor equipment. © 2019 Wiley Periodicals, Inc. J. Appl. Polym. Sci. 2020, 137, 48809.

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“…It has been reported that as the amount of silica in STF increases, the critical shear rate decreases and the viscosity increases. It has been reported that the quasi-static puncture resistance of STF impregnated Twaron fabrics is significantly increased [15][16][17]. Li et al applied dynamic impact tests to STF impregnated UHMPWE fabrics.…”

Section: Introductionmentioning

confidence: 99%

Investigation of the Effect of Shear Thickening Fluid and Fabric Structure on Inter-Yarn Friction Properties in Twaron Fabrics

Yanen¹,

Solmaz²,

Aydoğmuş³

2020

European Journal of Technic

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It is known that shear thickening fluids increase the energy absorption capacity of high performance fabrics. For this reason, soft body armors have been produced by impregnating shear thickening fluids recently on high performance fabrics. In this study, it is aimed to examine the effects of shear thickening fluid and fabric structure on the inter-yarn friction properties of para-aramid fabrics with different properties. Fumed silica was dispersed in polyethylene glycol to produce shear thickening fluid. Twaron 200 and Twaron 460 para-aramid fabrics with different properties such as threads number (105x105 and 67x67), areal density (200 gr / m 2 and 460 gr / m 2 ) and linear density (930 and 3360 Dtex) were impregnated with shear thickening fluid. It was observed that both of shear thickening fluid impregnated fabrics had higher yarn pull-out force than neat fabrics due to inter-yarn friction. When shear thickening fluid impregnated fabrics are according to maximum yarn pull-out force; Twaron 200 and Twaron 460 fabrics requires approximately 3 times and 9 times more force to pull-out the yarn in comparison to the neat fabric respectively. In this study, it has been observed that the positive effects of shear thickening fluid impregnation on energy absorption of Twaron fabrics depend on structural parameters such as threads number, areal density and linear density.

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Characterization of the rheological and mechanical properties of shear thickening fluid-coated Twaron® composite

Cited by 18 publications

References 31 publications

High‐velocity impact performance of shear‐thickening fluid/kevlar composites made by the padding process

High‐velocity impact performance of shear‐thickening fluid/kevlar composites made by the padding process

Effects of silica morphology on the shear‐thickening behavior of shear thickening fluids and stabbing resistance of fabric composites

Investigation of the Effect of Shear Thickening Fluid and Fabric Structure on Inter-Yarn Friction Properties in Twaron Fabrics

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