Ho Yi-Huan, 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 13;15(2):424. doi: 10.3390/polym15020424.
This study proposes the composites with a sandwich structure that is primarily made by the multi-step foaming process. The staple material is polyurethane (PU) foam that is combined with carbon fibers, followed by a Kevlar woven fabric. The composites are evaluated in terms of puncture resistance, buffer absorption, and electromagnetic wave shielding effectiveness (EMSE). The manufacturing process provides the composites with a stabilized structure efficiently. Serving the interlayer, a Kevlar woven fabric are sealed between a top and a bottom layer consisting of both PU foam and an aluminum film in order, thereby forming five-layered composites. Namely, the upper and lower surfaces of the five-layered sandwiches are aluminum films which is laminated on a purpose for the EMSE reinforcement. The test results indicate that the PU foam composites are well bonded and thus acquire multiple functions from the constituent materials, including buffer absorption, puncture resistance, and EMSE. There is much prospect that the PU foam composites can be used as a protective material in diverse fields owing to a flexible range of functions.
本研究提出了一种具有三明治结构的复合材料，该结构主要通过多步发泡工艺制成。主要材料是聚氨酯（PU）泡沫，它与碳纤维结合，然后是凯夫拉尔织物。对该复合材料进行了抗穿刺性、缓冲吸收和电磁波屏蔽效能（EMSE）方面的评估。制造工艺有效地为复合材料提供了稳定的结构。作为中间层，一层凯夫拉尔织物被依次密封在由PU泡沫和铝膜组成的顶层和底层之间，从而形成五层复合材料。也就是说，五层三明治的上下表面是铝膜，其层压目的是增强EMSE。测试结果表明，PU泡沫复合材料粘结良好，因此从组成材料中获得了多种功能，包括缓冲吸收、抗穿刺性和EMSE。由于功能范围灵活，PU泡沫复合材料在不同领域用作保护材料具有很大的前景。
