基于金属多酚网络的碳纤维表面改性及其增强环氧树脂复合材料界面性能

doi:10.11896/cldb.24070023

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Abstract The wide applications of carbon fiber reinforcement composites are restricted due to their poor interfacial properties. One promising route is the surface modification of carbon fiber. Herein, tannic acid and silane coupling agent were firstly deposited on the fiber surface by a simple dip-coating method. They cross-linked to each other by covalent bonds to form the uniform coating. Subsequently, the metal phenolic networks (MPNs) with dense nano-sized particle structure were synthesized on the fiber surface by introducing copper ions, in which tannic acid and copper ions were linked by a coordination bond. Compared with unsized carbon fiber, the tensile strength of modified carbon fiber was increased by 10.2%. This can be attributed to the covalent and coordination bonds endow the MPNs with great mechanical properties, thus enabling them to withstand some tensile loads. Meanwhile, the functional groups present in MPNs are able to form chemical bonds with epoxy resin, while the dense nano-sized particle structure of MPNs can facilitate the formation of strong mechanical interlocking with epoxy resin. Under the synergistic effect of chemical bonding and mechanical interlocking, the interfacial shear strength of modified carbon fiber/epoxy composite is increased by 104.2% compared with that of the unsized carbon fiber/epoxy composite.

Key words： carbon fiber interfacial property metal phenolic networks epoxy resin surface modification

Published: Online: 2025-08-28

CLC number:

TB332

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	Articles by authors
	HU Wenlong
	YANG Lulu
	MIAO Lei
	HUANG Pinbo
	ZHANG Shuzheng
	ZHAO Zhibo
	CANG Yu
	YANG Bin

Cite this article:

HU Wenlong,YANG Lulu,MIAO Lei, et al. Constructing Metal Phenolic Networks onto Carbon Fiber Surface Toward Enhanced Interfacial Properties of Composites[J]. Materials Reports, 2025, 39(17): 24070023-6.

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https://www.mater-rep.com/EN/10.11896/cldb.24070023 OR https://www.mater-rep.com/EN/Y2025/V39/I17/24070023

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