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Enhancement of a Novel Sizing Agent in Mechanical Properties and Stab/Puncture Resistance of Kevlar Fabrics
Fibers and Polymers ( IF 2.5 ) Pub Date : 2021-07-29 , DOI: 10.1007/s12221-021-0432-0
Zhao, Hong-Yan, Qiang, Yong-Qin, Peng, Hao-Kai, Xing, Meng-Fan, Zhang, Xia-Yun, Lou, Ching-Wen

In the work, a kind of composite material with excellent stab/puncture resistance was prepared by resin bonded Kevlar fabric. Water-borne epoxy resin (PAEK), polyacrylamide (APAM), fatty alcohol polyoxyethylene phosphate potassium salt (TFPK) are formulated to form a novel sizing agent that can be used for the sizing Kevlar fabrics. The effects of the sizing agent on the mechanical and stab/puncture resistance are examined. A field emission scanning electron microscopy (SEM), an ultra-depth of field 3d microscope, and a universal testing machine were used to observe and evaluate the morphology of sizing fabrics, the stab/puncture morphology, mechanical properties, and quasi-static stabbing properties, respectively. The test results show that the puncture resistance of the sizing Kevlar fabrics increases first and then decreases with the increase of sizing agent concentration. Compared with non-sizing fabrics, the Kevlar fabrics that are treated with a sizing agent at a concentration of 10 wt% have 524 % higher puncture resistance, 301 % higher stab resistance, and a 6.9-fold increase in the burst strength. Because the fiber bundles in the sizing fabrics are confined due to the resin saturation, the friction among fibers is enhanced and thus better resists an external force and contributes a greater resistance against sharp objects.



中文翻译:

一种新型上浆剂对 Kevlar 织物机械性能和抗刺穿性的增强

在工作中,采用树脂粘合的凯夫拉织物制备了一种具有优异抗刺/刺穿性能的复合材料。由水性环氧树脂(PAEK)、聚丙烯酰胺(APAM)、脂肪醇聚氧乙烯磷酸钾盐(TFPK)配制而成的新型上浆剂,可用于凯夫拉织物的上浆。检查了施胶剂对机械和抗刺/刺穿性的影响。采用场发射扫描电子显微镜(SEM)、超景深3d显微镜和万能试验机对浆纱织物的形貌、刺/刺形貌、力学性能和准静态刺伤进行观察和评价属性,分别。试验结果表明,随着上浆剂浓度的增加,上浆Kevlar织物的抗穿刺性能先增加后减小。与非上浆织物相比,用10wt%浓度的上浆剂处理的Kevlar织物的抗刺穿性提高524%,抗刺伤性提高301%,爆破强度提高6.9倍。由于上浆织物中的纤维束因树脂饱和而受到约束,增强了纤维之间的摩擦力,从而更好地抵抗外力,对尖锐物体有更大的抵抗力。爆破强度增加9倍。由于上浆织物中的纤维束因树脂饱和而受到约束,增强了纤维之间的摩擦力,从而更好地抵抗外力,对尖锐物体有更大的抵抗力。爆破强度增加9倍。由于上浆织物中的纤维束因树脂饱和而受到约束,增强了纤维之间的摩擦力,从而更好地抵抗外力,对尖锐物体有更大的抵抗力。

更新日期:2021-07-29
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