A high anti-impact STF/Ecoflex composite structure with a sensing capacity for wearable design

Zhang, Junshuo; Wang, Yu; Deng, Huaxia; Zhou, Jianyu; Liu, Shuai; Wu, Jianpeng; Sang, Min; Gong, Xinglong

doi:10.1016/j.compositesb.2022.109656

Cited by 33 publications

(11 citation statements)

References 43 publications

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“…Zhang et al. 76 attached 3D fabric onto an Ecoflex shell to support the upper surface of a STF/Ecoflex composite, and rigid plate compression tests were conducted. The shear thickening effects became more obvious with the increase of STF concentration and compression rate, which caused more energy to be lost.…”

Section: Impact Behaviors Of Shear Thickening Fabric Compositesmentioning

confidence: 99%

“…The compressive behavior of the STF-impregnated WKSF had a significant strain-rate effect, and it showed a lower peak load than those of the neat WKSF (Figure 8 (e)). Zhang et al 76 attached 3D fabric onto an Ecoflex shell to support the upper surface of a STF/ Ecoflex composite, and rigid plate compression tests were conducted. The shear thickening effects became more obvious with the increase of STF concentration and compression rate, which caused more energy to be lost.…”

Section: Drop-weight Impactmentioning

confidence: 99%

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Shear thickening fabric composites for impact protection: a review

Tan

2022

Textile Research Journal

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Fabrics with proper mechanical properties and high structural designability are frequently selected as the reinforcement of flexible composites. Shear thickening materials (STMs), including shear thickening fluid and shear thickening gel, are dense colloidal suspensions exhibiting an abrupt increase in viscosity with increasing shear rate. Shear thickening fabric composites (STFCs) which combined STM with fabrics, have been increasingly in demand for impact protective applications due to their tremendous potential. Herein, the characteristics of STM and the effects of fabric reinforcement on STFC impact behaviors are discussed for optimizing their properties and structures. Subsequently, the impact behaviors of STFCs obtained by multiple testing approaches with different impact threats are reviewed systematically. Furthermore, a comprehensive summary of the existing literature on stab, drop-weight, split Hopkinson pressure bar, and ballistic impact protective mechanisms of STFCs is presented. It is found that based on the proper selection of STM types, thorough mechanistic explanations of STFC impact behaviors are instructive and could facilitate the development of wearable protective equipment. The purpose of this critical review is to provide a framework for comparison of the effective impact resistances of STFCs across many applications and to discuss issues for future research.

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Section: Impact Behaviors Of Shear Thickening Fabric Compositesmentioning

confidence: 99%

Section: Drop-weight Impactmentioning

confidence: 99%

Shear thickening fabric composites for impact protection: a review

Tan

2022

Textile Research Journal

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“…In addition to meeting the basic rheological property requirements, multi-phase STFs can be synthesized by introducing conductive carbon-based additions to provide intelligent functions such as strain or force sensing. 17,18 Chen et al 7 prepared conductive STFs using carbon nanotubes (CNTs). The mass fraction of SiO 2 and CNTs affected the resistance of C-STFs, which was negatively correlated with STFs thickening.…”

Section: Introductionmentioning

confidence: 99%

“…The mass fraction of SiO 2 and CNTs affected the resistance of C-STFs, which was negatively correlated with STFs thickening. Zhang et al 19 prepared a C-STF/Ecoex material for sensors by adding CNTs to STFs, and developed a exible composite for multifunction applications. Wang and Liu et al 20,21 obtained a exible material with a high sensing sensitivity and excellent protective performance by combining conductive STFs with CNTs and Kevlar fabric, which monitored the different motion states of the human body.…”

Section: Introductionmentioning

confidence: 99%

Synthesis and properties of SiO₂/SiO₂@Ag two-phase STFs

Wang

Jia

et al. 2023

RSC Adv.

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“…With the development of smart wearable devices, protecting garments are also expected to have intelligent applications for sensing impact and monitoring body motion. − Conductive STF impregnation and laser direct writing have been the typical technologies for fabricating composites with force or strain-sensing characteristics. Liu and Zhang prepared a novel wearable e-textile constructed with CNT/STF/Kevlar with outstanding protection and electrical conductivity performance that can react to slight human motions and capture stimulus from high-speed impact. Wang et al developed a smart protective garment by directly printing laser-induced graphene (LIG) on Kevlar fabric, involving foldable batteries, ECG electrodes, and NO 2 sensors.…”

Section: Introductionmentioning

confidence: 99%

Low-Temperature-Tolerant Strain-Sensing Flexible Composite for Soft Body Armor

Wang

ZHANG

et al. 2023

ACS Appl. Mater. Interfaces

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Developing soft body armor with sensing characteristics in various application scenarios is a challenge but important for creating a peaceful world and personal safety, whereas existing materials suffer from indefinite protective effects and stimulus response at subzero temperatures in the long term. Herein, an antifreezing and flexible puncture-resistance composite with strainsensing ability is developed by compounding a NaCl-soaked poly(vinyl alcohol) (PVA)/sodium alginate (SA)/glycerol (Gly) hydrogel (PSGN hydrogel) with Kevlar fabric. After freezing− thawing treatment once and NaCl immersion for 10 h, the Kevlar/ PSGN-10 composite has excellent puncture-resistance properties and linear, rapid response, wide band, and stable strain-sensing behaviors at 25 and −30 °C. The composite's maximum puncturing force and energy dissipation at −30 °C are 53.92 N and 370 mJ, respectively, increased by 285 and 302% compared with neat Kevlar fabric. The flexibility reduction and the mass addition of the Kevlar/PSGN-10 composite are merely 19 and 40%, respectively, showing superior wearable comfortability and protection efficiency. The composites also reveal remarkable strain-sensing abilities at −30 °C (linear strain sensitivity with GF = 0.27 and R 2 = 0.981, a wide working frequency range of 0.16−1.3 Hz, and sensing stability for 1500 cycles). Moreover, the composite could respond to multipart body motion directly, including fingers, elbows, wrists, and knees. Consequently, the Kevlar/PSGN composite developed in this paper is promising for intelligent soft body armor at various temperatures.

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A high anti-impact STF/Ecoflex composite structure with a sensing capacity for wearable design

Cited by 33 publications

References 43 publications

Shear thickening fabric composites for impact protection: a review

Shear thickening fabric composites for impact protection: a review

Synthesis and properties of SiO₂/SiO₂@Ag two-phase STFs

Low-Temperature-Tolerant Strain-Sensing Flexible Composite for Soft Body Armor

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A high anti-impact STF/Ecoflex composite structure with a sensing capacity for wearable design

Cited by 33 publications

References 43 publications

Shear thickening fabric composites for impact protection: a review

Shear thickening fabric composites for impact protection: a review

Synthesis and properties of SiO2/SiO2@Ag two-phase STFs

Low-Temperature-Tolerant Strain-Sensing Flexible Composite for Soft Body Armor

Contact Info

Product

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About

Synthesis and properties of SiO₂/SiO₂@Ag two-phase STFs