In this work, shear-stiffening gel (STG) was introduced into shear thickening fluid (STF)-impregnated-Kevlar® woven fabric (Kevlar/STF) to improve the impact resistance. The STF filled within the yarns of Kevlar and the STG covered the Kevlar/STF to form Kevlar/STF/STG composite. The STG in the Kevlar/STF/STG not only protected STF but also improved the impact resistance of the fabric because of its excellent shear-stiffening characteristics. A series of experiments including the yarn pull-out test, the split Hopkinson pressure bar impact test, rod penetration test, and knife cutting test were carried out to verify the enhancement effect. The improvement mechanism of the impact resistance for the Kevlar/STF/STG was studied. Under the similar anti-impact performance, the Kevlar/STF/STG possessed lower weight than the Kevlar and its strong impact resistance originated from the synergetic effect among the STF, STG and Kevlar. Therefore, the Kevlar/STF/STG exhibited broad potential in the soft body armor.

在这项工作中，将剪切增强凝胶（STG）引入浸渍了剪切增强液（STF）的Kevlar®机织织物（Kevlar / STF）中，以提高抗冲击性。STF填充在Kevlar的纱线中，STG覆盖Kevlar / STF，形成Kevlar / STF / STG复合材料。Kevlar / STF / STG中的STG不仅可以保护STF，而且由于其优异的剪切刚度特性，还可以提高织物的抗冲击性。进行了一系列实验，包括纱线拉出试验，霍普金森分体式压力棒冲击试验，棒穿透试验和刀割试验，以验证增强效果。研究了Kevlar / STF / STG耐冲击性的改善机理。在类似的抗冲击性能下，Kevlar / STF / STG的重量低于Kevlar，其强大的抗冲击性源自STF，STG和Kevlar之间的协同作用。因此，Kevlar / STF / STG在防弹衣中显示出广阔的潜力。