Wang Y, Mu Z, Zhang Z, Song W, Zhang S, Hu H, Ma Z, Huang L, Zhang D, Wang Z, Li Y, Zhang B, Li B, Zhang J, Niu S, Han Z, Ren L. Interfacial reinforced carbon fiber composites inspired by biological interlocking structure.
iScience 2022;
25:104066. [PMID:
35359808 PMCID:
PMC8961231 DOI:
10.1016/j.isci.2022.104066]
[Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/05/2021] [Revised: 01/22/2022] [Accepted: 03/08/2022] [Indexed: 11/26/2022] Open
Abstract
Weak interfacial activity and poor wettability between fiber and matrix are known to be the two main factors that restrict the mechanical properties of carbon fiber-reinforced composites (CFRCs). Herein, inspired by high strength and toughness characteristics of wing feathers of Black Kite (Milvus migrans), natural hook-groove microstructure system (HGMS) and underlying mechanical interlocking mechanism were carefully investigated. Biomimetic HGMS based on dopamine-functionalized carbon fibers and ZnO nanorods were constructed successfully by a two-step modification method to enhance interfacial adhesion. Further, CFRCs featured with biomimetic HGMS were prepared by a vacuum-assisted contact molding method. Experimental results confirmed that flexural strength and interlaminar shear strength of the bioinspired CFRCs were effectively improved by 40.02 and 101.63%, respectively. The proposed bioinspired design strategy was proved to be flexible and effective and it was anticipated to provide a promising design approach and facile fabrication method for desirable CFRCs with excellent mechanical properties.
Natural HGMS and mechanical interlocking mechanism were carefully investigated
Biomimetic HGMS based on functionalized CFs and ZnO NRs was constructed
Mechanical performance of the bioinspired CFRCs was enhanced significantly
The interface adhesion between the CFs and EP was proved to be enhanced
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