Xiancheng Lv, Shuyan Yang, Xianqiang Pei, Yaoming Zhang, Qihua Wang, Tingmei Wang
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Abstract
Carbon fiber reinforced polyether ether ketone (CF/PEEK) composites are widely used as tribo-materials in the aerospace and automotive industry. To amplify the industrial utilization of extrusion-based additive manufacturing fused deposition modeling in fabricating CF/PEEK tribo-composites, the composites' microstructure–property relationship was studied with respect to carbon fiber content varying between 5 wt% and 30 wt%. This revealed that the incorporation of carbon fibers helped enhance the mechanical strength of PEEK greatly with an optimal content of 5 wt%, at which the composite material exhibited the highest crystallinity as well as the best mechanical performance. Tribological tests indicated that CF/PEEK composites were more suitable for high speed and heavy load conditions especially for 20 wt% CF/PEEK, which was associated with the establishment of high quality transfer films covered on counter steel surfaces. The present work provides a simple and low cost way of fabricating high performance PEEK composites used as tribo-materials. © 2024 Society of Industrial Chemistry.
基于挤压的添加制造法制造的聚醚醚酮复合材料的微观结构和摩擦学行为研究
碳纤维增强聚醚醚酮(CF/PEEK)复合材料作为三元材料广泛应用于航空航天和汽车工业。为了扩大基于挤压的增材制造熔融沉积模型(FDM)在制造 CF/PEEK 三元复合材料中的工业应用,研究了复合材料的微观结构-性能关系,碳纤维含量在 5 wt% 到 30 wt% 之间变化。结果表明,碳纤维的加入有助于大大提高 PEEK 的机械强度,最佳含量为 5 wt%,此时复合材料的结晶度最高,机械性能最好。摩擦学测试表明,CF/PEEK 复合材料更适用于高速和重载条件,尤其是在 CF/PEEK 含量为 20 wt% 的情况下,这与在对钢表面形成高质量的转移膜有关。本研究提供了一种简单、低成本的方法来制造用作三元材料的高性能 PEEK 复合材料。本文受版权保护。
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