Properties of Kevlar fabric composites reinforced by STF composed of monodisperse polystyrene microspheres

Sheng, Xianzhe; Qin, Jianbin; Wang, Tianwei; Yun, Jin Han; Zhang, Guangcheng

doi:10.1016/j.tws.2021.108238

Cited by 17 publications

(4 citation statements)

References 49 publications

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“…Moreover, the increase of the puncture-resistance properties is much higher than the mass addition of the composite (40%). In Figure c, the Kevlar/PSGN-10 composites prepared in this study remarkably promote antipuncture efficiency compared with other flexible puncture-resistance composites ,,,− …”

Section: Resultsmentioning

confidence: 74%

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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Section: Resultsmentioning

confidence: 74%

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

Wang

ZHANG

et al. 2023

ACS Appl. Mater. Interfaces

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“…The benefit of shear thickening behavior of fluids in the mechanical and ballistic applications was reported in numerous studies [ 51 , 52 , 53 , 54 , 55 , 56 , 57 , 58 , 59 , 60 , 61 , 62 , 63 , 64 , 65 ]. For these studies, a thickening ratio is taken into account in the efficiency of an STF [ 46 ].…”

Section: Theoretical Basismentioning

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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“…With the increasing development of weapons and equipment, the threat to soldiers in warfare has become more severe, leading to a growing interest in the development of high-performance protective materials, particularly bulletproof vests. [1][2][3] Aramid fiber (AF) is widely used in individual protection due to its excellent properties such as low density, high specific strength, and high specific modulus. [4][5][6] However, the protective performance of a single-layer aramid fabric is relatively weak, often requiring 20-50 layers of fabric to meet bulletproof requirements.…”

Section: Introductionmentioning

confidence: 99%

Study on bulletproof performance of functionalized fabrics modified by microcapsules

Li,

Yan,

Wang

et al. 2024

Polymer Composites

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The incorporation of microcapsule particles (MPs) into fabrics offers the potential to enhance both the friction between fabric yarns and the bulletproof impact performance. In this study, MPs were prepared using the interfacial polymerization method. Furthermore, an innovative modification of the AF fabric was achieved by introducing a silane coupling agent and MPs. This resulted in the development of a microcapsules‐aramid fibers (MPs‐AF) composite material exhibiting excellent protective performance. The characterization experiment demonstrated the successful adhesion of MPs to the AF fabric, forming a robust bond between the fiber and the particles. Importantly, the modification process did not have any adverse effects on the fiber structure. The study further investigated the ballistic performance and protection mechanism of the modified fabrics through mechanical performance tests and ballistic impact tests. The yarn pull‐out experiment revealed that the MPs‐AF composite material exhibited a significant increase in pull‐out force, with a remarkable improvement of 175.6% compared to AF fabric. In the ballistic impact experiments, the MPs‐AF composite material demonstrated a substantial increase in ballistic limit velocity, rising from 52 to 118 m/s when compared to the AF fabric. These findings highlight the potential application of the MPs‐AF composite material in the field of wearable protection.Highlights Fiber surface modification grafting reaction. A simple and novel solution impregnation method was used to prepare modified AF. Preparation of microcapsule particles by interfacial polymerization. Green new fiber bulletproof material. Chemical grafting produces strong chemical bonds to increase interfacial resistance.

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Properties of Kevlar fabric composites reinforced by STF composed of monodisperse polystyrene microspheres

Cited by 17 publications

References 49 publications

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

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

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

Study on bulletproof performance of functionalized fabrics modified by microcapsules

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