论文标题
薄层热塑性复合材料：从弱到稳健的横向性能，通过微结构和形态调整
Thin-ply thermoplastic composites: from weak to robust transverse performance through microstructural and morphological tuning
论文作者
论文摘要
薄薄的壳碳纤维复合材料对于需要大量可回收变形，高刚度和低重量的结构具有巨大的潜力，如可部署的空间结构，生物医学设备和机器人技术。尽管在纤维方向上非常灵活，但薄壳对离轴载荷高度敏感。对缺陷，制造局限性和缺少深入的机械理解的高度敏感性阻碍了横向稳固的壳的产生。本文提供了对影响超薄复合材料横向强度的因素的关键见解，该因素使用高度精确的制造技术来生产新型的热塑性薄层薄层（35μm）碳纤维 - 碳纤维层。解决了纤维类型，微结构和聚合物形态的影响。发现与最先进的热固性相比，微结构调整和等温结晶的结合可以实现薄壳复合材料，横向性能提高了158％。此外，这项工作概述了对所有相关处理条件的敏感性，突出了对所有命名参数的准确控制的需求。
Thin shell carbon fiber composites have great potential for structures that require large recoverable deformations, high stiffness and low weight, as in deployable space structures, biomedical devices and robotics. Despite being astonishingly flexible in fiber direction, thin shells are highly sensitive to off-axis loading. High sensitivity to imperfections, manufacturing limitations and a missing in-depth mechanical understanding hinders the creation of transversely robust shells. This paper provides crucial insights into the factors influencing the transverse strength of ultra-thin composites using a highly accurate manufacturing technique to produce novel thermoplastic thin-ply (35 μm) carbon fiber-PEEK plies. The effects of fiber type, microstructure and polymer morphology are addressed. It was found that a combination of microstructure tuning and isothermal crystallization can achieve thin shell composites with a 158% improved transverse performance compared to state-of-the-art thermosets. Moreover, this work outlines the sensitivity to all related processing conditions, highlighting the need for accurate control of all named parameters.
