Zhang Xi, He Xiaodong, Li Hualian, Wang Shenglai
College of Mechanical Engineering, Inner Mongolia University of Technology, Hohhot 010051, China.
Inner Mongolia Aerospace Honggang Machinery Co., Ltd., Hohhot 010070, China.
Polymers (Basel). 2024 Dec 30;17(1):73. doi: 10.3390/polym17010073.
The emerging thermoplastic composite material PEKK exhibits superior thermal stability compared to PEEK. In this work, CF/PEKK laminates were fabricated using laser-assisted heating in AFP, and the effects of repass treatment on the mechanical properties and microstructure of the laminates were compared. The results show that after a single repass treatment, the tensile strength of the laminates increased by 28.39%, while the interlaminar shear strength increased by 11.9%, likely due to the distinct load-bearing components under the two loading conditions. Additionally, the repass treatment significantly improves the fiber/resin interface and surface roughness of the laminates.
新兴的热塑性复合材料聚醚酮酮（PEKK）与聚醚醚酮（PEEK）相比具有卓越的热稳定性。在这项工作中，采用自动铺放成型（AFP）中的激光辅助加热制备了碳纤维/聚醚酮酮（CF/PEKK）层压板，并比较了二次加热处理对层压板力学性能和微观结构的影响。结果表明，经过单次二次加热处理后，层压板的拉伸强度提高了28.39%，而层间剪切强度提高了11.9%，这可能是由于两种加载条件下不同的承载部件所致。此外，二次加热处理显著改善了层压板的纤维/树脂界面和表面粗糙度。
