期刊
COMPOSITES PART B-ENGINEERING
卷 211, 期 -, 页码 -出版社
ELSEVIER SCI LTD
DOI: 10.1016/j.compositesb.2021.108656
关键词
discontinuous reinforcement; Lamina/ply; Surface analysis; Recycling; Lay-up
资金
- National Key Research and Development Project [2019YFB1504800]
- Beijing Natural Science Foundation [2192044]
- Fundamental Research Funds for the Central Universities [XK1802-2]
- 2019 BUCT Youth Talent Plan, Open Project of State Key Laboratory of Organic-Inorganic Composites [Oic-202001008, Oic-202101008]
- Consulting Research Project of Chinese Academy of Engineering [2020-XY-81]
- National Natural Science Foundation of China [U1362205, 5157031049, 51373016]
- Natural Science Foundation of Jiangsu Province [SBK2014040489]
This study successfully enhanced the performance of epoxy composites by efficiently utilizing recycled carbon fiber and highly-aligned carbon fiber mat, especially in terms of mechanical properties and EMI shielding performance.
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 similar 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.
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