Stab resistance of shear thickening fluid (STF)-treated fabrics
Stab resistance of shear thickening fluid (STF)-treated fabrics
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DOI：
10.1016/j.compscitech.2006.08.007
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发表时间：
2007-03-01
影响因子：
9.1
通讯作者：
Wetzel, E. D.
中科院分区：
文献类型：
--
作者：
Decker, M. J.;Halbach, C. J.;Wetzel, E. D.
研究人员对剪切增稠液 (STF) 处理的 Kevlar (R) 和尼龙织物的防刺性进行了研究，结果发现，与同等面密度的纯织物目标相比，其防刺性表现出显着改善。具体而言，在高速和低速负载条件下，观察到抗穿刺性（尖刺威胁）显着改善，同时还观察到切割保护（刀具威胁）略有增加。对织物结构影响的研究表明，添加 STF 所带来的好处与增加织物纱线支数的效果类似，添加 STF 主要降低冲击区域中长丝和纱线的流动性。显微镜观察显示，损伤区域存在显着的能量耗散，包括聚合物长丝的塑性流动，以及由于与 STF 胶体颗粒的机械相互作用而导致的长丝变形。这些结果表明，这些新型材料可用于制造柔性防弹衣，以提供更好的防御刺伤威胁的能力。 (c) 2006 Elsevier Ltd. 保留所有权利。
The stab resistance of shear thickening fluid (STF)-treated Kevlar (R) and Nylon fabrics is investigated and found to exhibit significant improvements over neat fabric targets of equivalent areal density. Specifically, dramatic improvements in puncture resistance (spike threat) are observed under high and low speed loading conditions, while slight increases in cut protection (knife threat) are also observed. Studies on the effect of fabric architecture indicate that STF addition provides benefits analogous to the effect of increasing fabric yarn count, with STF addition primarily reducing the mobility of filaments and yarns in the impact zone. Microscopy shows significant energy dissipation in the damage zone that includes plastic flow of the polymeric filaments, as well as deformation of the filaments due to mechanical interaction with the colloidal particles of the STF. These results indicate that these novel materials could be used to fabricate flexible body armors that provide improved protection against stab threats. (c) 2006 Elsevier Ltd. All rights reserved.