Xia Yuanhao, Jiang Long, Chen Yi, Zhao Yiping, Yang Lili, Ge Dengteng
State Key Laboratory for Modification of Chemical Fibers and Polymer Materials, College of Materials Science and Engineering, Donghua University, Shanghai 201620, China.
Institute for Engineering and Technology (Shanghai), Xinxing Cathay International Group, Shanghai 201403, China.
Materials (Basel). 2024 Jan 6;17(2):293. doi: 10.3390/ma17020293.
Benefitting from lightweight, high strength, long life, and green recyclability, continuous fiber reinforced thermoplastic composite (CFTPC) pipes have attracted extensive interest, especially in the on-orbit additive manufacturing of structural components. However, the preparation of CFTPC pipes remains challenging due to the on-orbit limited space and high processing temperature of thermoplastic resin. Here, we report an effective approach for high performance carbon fiber/polyether-ether-ketone (CF/PEEK) thin-walled pipes via bidirectional reinforcement using the pultrusion-winding technique. The continuous fabrication of thin-walled pipes can be achieved, but the limitation by the size of core mold is also broken. The compressive and shear performance of CF/PEEK pipes with different layer designs have been studied based on experiments and simulations. With the increase in axial prepreg tape layer, the resultant CF/PEEK pipes exhibit greatly improved axial compression strength. The finite element analysis indicates that the maximum axial stress is decreased due to the axial enhancement. The flexural strength is greatly proved with pultrusion-winding cycles. The simulation confirms that the circumferential strain is effectively reduced. The high performance of bidirectional reinforced CF/PEEK pipes and the facile controllability of this approach highlight their suitability for utilization in on-orbit manufacturing of large-scale structures.
连续纤维增强热塑性复合材料（CFTPC）管道具有轻质、高强度、长寿命和绿色可回收性等优点，因此引起了广泛关注，特别是在结构部件的在轨增材制造方面。然而，由于在轨空间有限以及热塑性树脂的加工温度较高，CFTPC管道的制备仍然具有挑战性。在此，我们报告了一种通过拉挤缠绕技术进行双向增强来制备高性能碳纤维/聚醚醚酮（CF/PEEK）薄壁管道的有效方法。该方法不仅可以实现薄壁管道的连续制造，还突破了芯模尺寸的限制。基于实验和模拟研究了不同层设计的CF/PEEK管道的压缩和剪切性能。随着轴向预浸带层数的增加，所得CF/PEEK管道的轴向压缩强度有显著提高。有限元分析表明，由于轴向增强，最大轴向应力降低。拉挤缠绕循环极大地提高了弯曲强度。模拟结果证实，周向应变得到有效降低。双向增强CF/PEEK管道的高性能以及该方法的简便可控性突出了它们在大规模结构在轨制造中的适用性。
