Abstract The vast Carbon Fiber Reinforced Polymer (CFRP) waste accumulated is pressing for its recycling. A novel recycling approach, which integrated carbon fiber reclamation and composite additive manufacturing, is proposed to process the CFRP waste into three Dimensional (3D) parts. In the experiments, the CFRP waste was recycled by supercritical n-butanol to yield reclaimed Carbon Fibers (rCFs). The rCFs were ground by a ball mill, mixed with Poly-Ether-Ether-Ketone (PEEK) powder and then extruded to the composite filament. The filament was fed to the Fused Deposition Modeling (FDM) printer to fabricate 3D parts. Mechanical and electrical properties of the parts were investigated and compared with that of pure PEEK. The results illustrate that the additive manufacturing-based approach offers a potential strategy to reuse the CFRP waste and rapidly fabricate the rCF reinforced plastics with complex geometry and function.

中文翻译：

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一种基于增材制造的碳纤维增强聚合物回收方法

摘要 大量积累的碳纤维增强聚合物 (CFRP) 废料迫切需要回收利用。提出了一种将碳纤维回收和复合增材制造相结合的新型回收方法，将 CFRP 废料处理成三维 (3D) 部件。在实验中，CFRP 废料被超临界正丁醇回收以产生再生碳纤维 (rCFs)。rCF 用球磨机研磨，与聚醚醚酮 (PEEK) 粉末混合，然后挤出成复合长丝。灯丝被送入熔融沉积成型 (FDM) 打印机以制造 3D 部件。研究了部件的机械和电气性能，并与纯 PEEK 进行了比较。