Experimental and numerical study on CuO/ZnO-modified aramid fabric for ballistic and UV radiation protection

IF 5 2区材料科学 Q1 MATERIALS SCIENCE, CHARACTERIZATION & TESTING

Polymer Testing Pub Date : 2024-09-10 DOI:10.1016/j.polymertesting.2024.108563

li Liu , Fenglei Huang , Yaojie Xu , Xuke Lan , Guangyan Huang

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引用次数: 0

Abstract

Aramid fabrics are widely used in bulletproof armor because of their excellent mechanical properties. Previous studies have shown that ultraviolet radiation has a negative effect on the mechanical properties of aramid yarn, so improving the mechanical properties and impact resistance of aramid fabrics under ultraviolet radiation has become a research focus. In this work, aramid fabric was modified with CuO and ZnO particles to improve its ballistic performance under ultraviolet radiation. The ballistic impact resistance response and microscopic failure mechanisms of aramid fabrics under ultraviolet radiation were analyzed in detail. Under ultraviolet radiation, the ballistic limit velocity (v_bl) of the CuO/ZnO-modified aramid fabric was 185.1 % greater than that of a neat fabric with a similar areal density. The v_bl of the single-layer modified fabric was 45.6 % greater than that of the two-layer neat fabrics. The decrease in the ballistic performance of the aramid fabric under ultraviolet radiation was attributed to surface damage caused by the fracture of the chemical structure of the fibers, which weakened the mechanical properties of the fabric. The numerical simulation results were highly consistent with the ballistic impact test results, and the error between the numerical simulation and experimental results was within 10 %. The effects of changes in the mechanical parameters of the fabrics on the protection mechanism and energy absorption structure during ballistic impact were investigated. The energy dissipation of the modified fabric was at least 147.7 % greater than that of the neat fabric, further explaining the significant improvement in the ballistic performance of CuO/ZnO-modified fabrics under ultraviolet radiation.

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用于防弹和防紫外线辐射的 CuO/ZnO 改性芳纶织物的实验和数值研究

芳纶织物因其优异的机械性能而被广泛应用于防弹装甲。以往的研究表明，紫外线辐射会对芳纶纱线的机械性能产生负面影响，因此提高芳纶织物在紫外线辐射下的机械性能和抗冲击性能成为研究重点。本研究采用 CuO 和 ZnO 粒子对芳纶织物进行改性，以改善其在紫外线辐射下的防弹性能。详细分析了芳纶织物在紫外线辐射下的抗弹道冲击响应和微观失效机理。在紫外线辐射下，CuO/ZnO 改性芳纶织物的弹道极限速度（vbl）比具有相似面积密度的纯织物高出 185.1%。单层改性织物的 vbl 比双层纯织物高 45.6%。芳纶织物在紫外线辐射下的防弹性能下降的原因是纤维化学结构断裂造成表面损伤，从而削弱了织物的机械性能。数值模拟结果与弹道冲击试验结果高度一致，数值模拟结果与试验结果的误差在 10% 以内。研究了织物机械参数的变化对弹道冲击过程中保护机制和能量吸收结构的影响。改性织物的能量耗散比纯织物至少高出 147.7%，这进一步说明了 CuO/ZnO 改性织物在紫外线辐射下的防弹性能得到了显著改善。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

Polymer Testing 工程技术-材料科学：表征与测试

CiteScore

10.70

自引率

5.90%

发文量

328

审稿时长

44 days

期刊介绍： Polymer Testing focuses on the testing, analysis and characterization of polymer materials, including both synthetic and natural or biobased polymers. Novel testing methods and the testing of novel polymeric materials in bulk, solution and dispersion is covered. In addition, we welcome the submission of the testing of polymeric materials for a wide range of applications and industrial products as well as nanoscale characterization. The scope includes but is not limited to the following main topics: Novel testing methods and Chemical analysis • mechanical, thermal, electrical, chemical, imaging, spectroscopy, scattering and rheology Physical properties and behaviour of novel polymer systems • nanoscale properties, morphology, transport properties Degradation and recycling of polymeric materials when combined with novel testing or characterization methods • degradation, biodegradation, ageing and fire retardancy Modelling and Simulation work will be only considered when it is linked to new or previously published experimental results.