This study presented an economic and closed-loop recycling approach of carbon fibre reinforced polymers (CFRP) comprising phosphoric acid derived efficient reclaimation of recycled CF (rCF) and re-manufacture of high performance epoxy (EP) composites reinforced by highly-aligned rCF mat. The integral rCF with clean surface and intact graphitization structure showed the high retention ratios of 97.1 and 99.5% in tensile strength and modulus, respectively, as well as highly-aligned arrangement of rCF mat with preferential alignment degree (PAD) of 83.5% much contributed to increasing its maximum volume fraction up to ~ 40% in composites. Thus, through fully utilizing the property anisotropy and structural designability of aligned rCF, mechanical and EMI shielding performance of rCF/EP composites were significantly enhanced via optimizing mat layup configurations.

这项研究提出了一种经济和闭环的碳纤维增强聚合物（CFRP）回收方法，该方法包括磷酸有效回收再生CF（rCF）并通过高取向rCF毡增强的高性能环氧（EP）复合材料的再制造。具有清洁表面和完整石墨化结构的整体rCF分别显示出97.1和99.5％的高保留率，抗张强度和模量，以及rCF垫的高度排列，优先排列度（PAD）为83.5％。使其在复合材料中的最大体积分数增加至〜40％。因此，通过充分利用对准的rCF的特性各向异性和结构可设计性，