Lin Yan Yu, Lin Mei-Chen, Lou Ching-Wen, Chen Yueh-Sheng, Lin Jia-Horng
Laboratory of Fiber Application and Manufacturing, Advanced Medical Care and Protection Technology Research Center, Department of Fiber and Composite Materials, Feng Chia University, Taichung 407102, Taiwan.
Department of Biomedical Engineering, College of Biomedical Engineering, China Medical University, Taichung 404333, Taiwan.
Polymers (Basel). 2023 Jan 6;15(2):292. doi: 10.3390/polym15020292.
Laminated composites have been commonly applied to all fields. When made into laminated composites, Kevlar woven fabrics are able to provide the required functions. In this study, two types of TPU are incorporated to improve the intralayer features of Kevlar/TPU laminated composites. Hence, the Kevlar/TPU laminated composites consist of firmly bonded laminates while retaining flexibility of the fabrics. Being the interlayer of the laminated composites, the TPU layer provides adhesion while strengthening the tensile property, dynamic puncture resistance, and buffer strength of Kevlar/TPU laminated composites. The test results indicate that with a blending ratio of two types of TRU being 85/15 wt%, the Kevlar/TPU laminated composites exhibit a tensile strength of 18.08 MPa. When the stacking thickness is 1 mm, the tensile strength is improved to 357.73 N with the buffering strength reaching 4224.40 N. Notably, with a thickness being 1.2 mm, the laminated composites demonstrate a dynamic resistance being 672.15 N. In the meanwhile, functional Kevlar fabrics are allowed to keep the fiber morphology owing to the protection of TPU composite films. Considering the composition of protective gear, Kevlar/TPU laminated composites possess a powerful potential and are worthwhile exploring.
层压复合材料已广泛应用于各个领域。当制成层压复合材料时，凯夫拉尔编织织物能够提供所需的功能。在本研究中，加入了两种类型的热塑性聚氨酯（TPU）以改善凯夫拉尔/TPU层压复合材料的层内特性。因此，凯夫拉尔/TPU层压复合材料由牢固粘结的层压板组成，同时保留了织物的柔韧性。作为层压复合材料的中间层，TPU层提供了粘结力，同时增强了凯夫拉尔/TPU层压复合材料的拉伸性能、动态抗穿刺性和缓冲强度。测试结果表明，当两种类型的热塑性聚氨酯（TRU）的混合比例为85/15 wt%时，凯夫拉尔/TPU层压复合材料的拉伸强度为18.08 MPa。当堆叠厚度为1 mm时，拉伸强度提高到357.73 N，缓冲强度达到4224.40 N。值得注意的是，当厚度为1.2 mm时，层压复合材料的动态阻力为672.15 N。同时，由于TPU复合膜的保护，功能性凯夫拉尔织物能够保持纤维形态。考虑到防护装备的组成，凯夫拉尔/TPU层压复合材料具有强大的潜力，值得探索。
