Bio-inspired inorganic-organic structure synergistic interfacial modification for enhancing mechanical and electromagnetic interference shielding properties of carbon fiber/epoxy composites

IF 8.3 1区材料科学 Q1 MATERIALS SCIENCE, COMPOSITES

Composites Science and Technology Pub Date : 2025-03-17 DOI:10.1016/j.compscitech.2025.111156

Rong Liu , Jie Chen , Wei Zhao , Lihao Sun , Ye Li , Yonglin Yang , Zhigang Liu

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引用次数: 0

Abstract

Carbon fiber reinforced polymer composites (CFRPs) are in huge demand in aerospace and navigation to reduce fuel consumption, but the weak mechanical and electromagnetic (EM) shielding properties remain pressing issues. Inspired by the bio-adhesion of mussels in nature, we self-polymerized organic polydopamine (PDA) layer on the carbon fiber (CF) surface as a versatile platform and successfully introduced inorganic Co₃O₄ nanosheets into the PDA-coated CF (PCF) surface via self-assembly process to enhance the interfacial bonding and electrical conductivity between the fiber and epoxy. The results showed that Co₃O₄-PDA-CF/EP outperformed unmodified CF/EP in flexural strength, interlaminar shear strength (ILSS), interfacial shear strength (IFSS), and electromagnetic interference (EMI) shielding properties, with enhancements of 59.4 %, 76.1 %, 131.5 %, and 61.1 %, respectively. Notably, the main fracture mechanism of composites gradually transfers from interfacial failure to cohesive failure. Briefly, the work provides experimental validation for developing high-performance multifunctional CFRPs and show potential application prospects in aircraft and other fields.

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来源期刊

Composites Science and Technology 工程技术-材料科学：复合

CiteScore

16.20

自引率

9.90%

发文量

611

审稿时长

33 days

期刊介绍： Composites Science and Technology publishes refereed original articles on the fundamental and applied science of engineering composites. The focus of this journal is on polymeric matrix composites with reinforcements/fillers ranging from nano- to macro-scale. CSTE encourages manuscripts reporting unique, innovative contributions to the physics, chemistry, materials science and applied mechanics aspects of advanced composites. Besides traditional fiber reinforced composites, novel composites with significant potential for engineering applications are encouraged.