Study on dynamic and static tensile and puncture-resistant mechanical properties of impregnated STF multi-dimensional structure Kevlar fiber reinforced composites

IF 16.4 1区化学 Q1 CHEMISTRY, MULTIDISCIPLINARY Accounts of Chemical Research Pub Date : 2024-09-05 DOI:10.1515/phys-2024-0065

Yangshuo Liu, Xingyong Gao, Mingjiang Han, Huanan Wei, Hao Luo

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Abstract

Shear thickening fluid (STF)-impregnated Kevlar fabric can be used as “Liquid armor” for the protection of weapons and equipment. The concentration of dispersed phase in STF and the fabric structure are important factors that affect the mechanical properties of composites. To obtain the mechanical properties of Kevlar fabric impregnated with STF, nano-sized silicon dioxide particles (SiO2) and Polyethylene glycol were used as dispersing phase and dispersing medium, respectively, by impregnating Kevlar fabrics with 2D planar and three-dimensional (3D) angular interlock structure, fiber-reinforced composite fabrics impregnated with STF with different physical structures were obtained. The results show that the shear thickening behavior of STF is the most obvious when the concentration of STF is 60%. In addition, fabric structure and STF concentration play an active role in the mechanical properties of STF/Kevlar fiber reinforced composites. Compared with pure Kevlar fabric, the maximum tensile load and the maximum puncture load of the three-dimensional angular interlocking structure of STF/Kevlar fiber reinforced composites are increased by more than 13,000 N and 120 N, respectively. The research results can provide theoretical support for the mechanical properties of STF/Kevlar fiber-reinforced composites and individual protection research.

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浸渍 STF 多维结构 Kevlar 纤维增强复合材料的动静态拉伸和抗穿刺力学性能研究

经剪切增稠液（STF）浸渍的凯夫拉纤维可用作保护武器装备的 "液体装甲"。STF 中分散相的浓度和织物结构是影响复合材料机械性能的重要因素。为了获得浸渍 STF 的 Kevlar 纤维的力学性能，研究人员分别以纳米级二氧化硅颗粒（SiO2）和聚乙二醇作为分散相和分散介质，通过浸渍具有二维平面和三维角交错结构的 Kevlar 纤维，得到了具有不同物理结构的浸渍 STF 的纤维增强复合材料织物。结果表明，当 STF 的浓度为 60% 时，STF 的剪切增厚行为最为明显。此外，织物结构和 STF 浓度对 STF/Kevlar 纤维增强复合材料的力学性能也有积极影响。与纯 Kevlar 纤维相比，STF/Kevlar 纤维增强复合材料三维角交错结构的最大拉伸载荷和最大穿刺载荷分别提高了 13,000 N 和 120 N 以上。研究结果可为 STF/Kevlar 纤维增强复合材料的力学性能和个体防护研究提供理论支持。

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来源期刊

Accounts of Chemical Research 化学-化学综合

CiteScore

31.40

自引率

1.10%

发文量

312

审稿时长

2 months

期刊介绍： Accounts of Chemical Research presents short, concise and critical articles offering easy-to-read overviews of basic research and applications in all areas of chemistry and biochemistry. These short reviews focus on research from the author’s own laboratory and are designed to teach the reader about a research project. In addition, Accounts of Chemical Research publishes commentaries that give an informed opinion on a current research problem. Special Issues online are devoted to a single topic of unusual activity and significance. Accounts of Chemical Research replaces the traditional article abstract with an article "Conspectus." These entries synopsize the research affording the reader a closer look at the content and significance of an article. Through this provision of a more detailed description of the article contents, the Conspectus enhances the article's discoverability by search engines and the exposure for the research.