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

Yeh, Shu‐Kai; Zhuang, Hong‐Yi; Chen, Yao-Chun; Tseng, Po‐Chun; Zheng, Jie‐Yu; Yang, Ling-Yueh; Lee, Kuei-Chi; Chen, Yuliang

doi:10.1002/pc.25147

Cited by 14 publications

(9 citation statements)

References 49 publications

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“…PMMA particles are easier to contact and aggregate, forming metastable particle clusters. As a result, the viscosity of the dispersion system increases and the system appears shear thickening 43 …”

Section: Resultsmentioning

confidence: 99%

Preparation and characterization of imidazolyl ionic liquid‐based shear thickening dispersion system

Cao

Luo

Xiao³

2020

J of Applied Polymer Sci

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Shear thickening liquid (STF) is a new nonNewtonian fluid widely used in industrial production. In this paper, a novel shear thickening and dispersing system, namely poly methyl methacrylate (PMMA)/1-butyl-3-methylimidazole hexa-fluorophosphate ([BMIM]PF 6), was prepared using ultrasonic with PMMA as the dispersing phase and [BMIM]PF 6 as the dispersing medium. The stability, thixotropic, reversibility, rheology, and viscoelasticity of the dispersion system was studied, respectively. The dispersed system has good stability. The dispersed system shows high response sensitivity to shear rate, as well as good reversibility to shear thickening. Compared with traditional silicon dioxide/polyethylene glycol dispersion system, PMMA/[BMIM]PF 6 dispersion system displays a significantly enhanced shear thickening effect. Nonionic surfactant triton X-100 of 4 wt% can greatly improve PMMA/[BMIM]PF 6 dispersion system's shear thickening behavior. This paper provides a new idea for the further development of protective materials by using STF.

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Section: Resultsmentioning

confidence: 99%

Preparation and characterization of imidazolyl ionic liquid‐based shear thickening dispersion system

Cao

Luo

Xiao³

2020

J of Applied Polymer Sci

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“…The most adopted type of PEG fluid was the one with 200 g/mol, although higher molecular weight generally promotes a higher viscosity, as already reported in previous works [ 183 ] and tested in different papers [ 184 , 185 ]. The works of Yeh et al [ 172 ], Yeh et al [ 171 ], Chang et al [ 173 ], Zhang et al [ 176 ], Zhihao et al [ 181 ] and Katiyar et al [ 175 ] carry out what was stated.…”

Section: State-of-the-artmentioning

confidence: 99%

“…After the first work investigating the STF content in Kevlar fabrics, Yeh et al [ 172 ] analyzed the influence of the impregnation method on the ballistic properties of impregnated Kevlar fabrics using the 40 wt% concentration, as adopted in their previous study [ 171 ]. The authors performed the impregnation by two methods.…”

Section: State-of-the-artmentioning

confidence: 99%

Fabric Impregnation with Shear Thickening Fluid for Ballistic Armor Polymer Composites: An Updated Overview

et al. 2022

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As destructive power of firearms raises over the years, ballistic armors are in continuous need of enhancement. For soft armors, this improvement is invariably related to the increase of stacked layers of high-strength fiber fabrics, which potentially restrains wearer mobility. A different solution was created in the early 2000s, when a research work proposed a new treatment of the ballistic panels with non-Newtonian colloidal shear thickening fluid (STF), in view of weight decreasing with strength reinforcement and cost-effective production. Since then, databases reveal a surge in publications generally pointing to acceptable features under ballistic impact by exploring different conditions of the materials adopted. As a result, several works have not been covered in recent reviews for a wider discussion of their methodologies and results, which could be a barrier to a deeper understanding of the behavior of STF-impregnated fabrics. Therefore, the present work aims to overview the unexplored state-of-art on the effectiveness of STF addition to high-strength fabrics for ballistic applications to compile achievements regarding the ballistic strength of this novel material through different parameters. From the screened papers, SiO2, Polyethylene glycol (PEG) 200 and 400, and Aramid are extensively being incorporated into the STF/Fabric composites. Besides, parameters such as initial and residual velocity, energy absorbed, ballistic limit, and back face signature are common metrics for a comprehensive analysis of the ballistic performance of the material. The overview also points to a promising application of natural fiber fabrics and auxetic fabrics with STF fluids, as well as the demand for the adoption of new materials and more homogeneous ballistic test parameters. Finally, the work emphasizes that the ballistic application for STF-impregnated fabric based on NIJ standards is feasible for several conditions.

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“…[21][22][23][24][25][26] The padding of STF into the single/ multilayer Kevlar composites improves energy absorption at high velocities. 27 The functionalization of nanosilica with silane coupling agents further improves the energy absorption of fabrics due to the formation of siloxane bonds. 28 The present work reports two main aspects; first is the preparation of shear thickening fluids by using nanosilica (nSiO 2 ) and surface-functionalized nanosilica (s-f-nSiO 2 ) and study of their shear thickening behavior for the selection of best STF for ballistic resistance study.…”

Section: Magnetorheologicalmentioning

confidence: 99%

Impact behavior of aminosilane functionalized nanosilica based shear thickening fluid impregnated Kevlar fabrics

Katiyar

Nandi

Prasad

2021

J of Applied Polymer Sci

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In the present work, two types of shear thickening fluids have been synthesized by using neat and aminosilane functionalized silica nanoparticles and their viscosity curves have been obtained by the rheometer. Based on the values of peak viscosity of synthesized shear thickening fluids, the surface functionalized nanosilica based shear thickening fluid has been chosen as a best candidate due to the high viscosity for impregnation into the neat Kevlar of different layers viz. four (04) and eight (08) layers for velocity impact study. The experimental investigations reveal high energy absorption of shear thickening fluid impregnated Kevlar as compared to the neat Kevlar. The maximum energy absorption 62 J is achieved corresponding to the initial velocity 154 mÁs −1 for 08 layers shear thickening fluid impregnated Kevlar specimen. The data have also been analytically determined and validated with the experimental data. The experimental data have good agreement with the analytical data within the accuracy of around 15 to 20%. The present findings can have significant inferences towards the fabrication of shear thickening fluids using nanomaterials for numerous applications such as soft armors, dampers, nanofinishing and so forth.

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

Cited by 14 publications

References 49 publications

Preparation and characterization of imidazolyl ionic liquid‐based shear thickening dispersion system

Preparation and characterization of imidazolyl ionic liquid‐based shear thickening dispersion system

Fabric Impregnation with Shear Thickening Fluid for Ballistic Armor Polymer Composites: An Updated Overview

Impact behavior of aminosilane functionalized nanosilica based shear thickening fluid impregnated Kevlar fabrics

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