Preparation carbon nanotube-decorated carbon fibers under low pressure for epoxy-based unidirectional hierarchical composites with enhanced interlaminar shear strength

Jianjie Qin; Chengguo Wang; Yanxiang Wang; Shunsheng Su; Zhiqiang Yao; Ziming Ma; Quan Gao; Meijie Yu; Qifen Wang; Huazhen Wei

Polymer Testing (Jan 2021)

Preparation carbon nanotube-decorated carbon fibers under low pressure for epoxy-based unidirectional hierarchical composites with enhanced interlaminar shear strength

Jianjie Qin,
Chengguo Wang,
Yanxiang Wang,
Shunsheng Su,
Zhiqiang Yao,
Ziming Ma,
Quan Gao,
Meijie Yu,
Qifen Wang,
Huazhen Wei

Affiliations

Jianjie Qin: Key Laboratory for Liquid-Solid Structural Evolution and Processing of Materials (Ministry of Education), Shandong University, Jinan, 250061, China; Carbon Fiber Engineering Research Center, School of Material Science and Engineering, Shandong University, Jinan, 250061, China
Chengguo Wang: Key Laboratory for Liquid-Solid Structural Evolution and Processing of Materials (Ministry of Education), Shandong University, Jinan, 250061, China; Carbon Fiber Engineering Research Center, School of Material Science and Engineering, Shandong University, Jinan, 250061, China; Corresponding author. Key Laboratory for Liquid-Solid Structural Evolution and Processing of Materials (Ministry of Education), Shandong University, Jinan, 250061, China.
Yanxiang Wang: Key Laboratory for Liquid-Solid Structural Evolution and Processing of Materials (Ministry of Education), Shandong University, Jinan, 250061, China; Carbon Fiber Engineering Research Center, School of Material Science and Engineering, Shandong University, Jinan, 250061, China
Shunsheng Su: Key Laboratory for Liquid-Solid Structural Evolution and Processing of Materials (Ministry of Education), Shandong University, Jinan, 250061, China; Carbon Fiber Engineering Research Center, School of Material Science and Engineering, Shandong University, Jinan, 250061, China
Zhiqiang Yao: Key Laboratory for Liquid-Solid Structural Evolution and Processing of Materials (Ministry of Education), Shandong University, Jinan, 250061, China; Carbon Fiber Engineering Research Center, School of Material Science and Engineering, Shandong University, Jinan, 250061, China
Ziming Ma: Key Laboratory for Liquid-Solid Structural Evolution and Processing of Materials (Ministry of Education), Shandong University, Jinan, 250061, China; Carbon Fiber Engineering Research Center, School of Material Science and Engineering, Shandong University, Jinan, 250061, China
Quan Gao: Key Laboratory for Liquid-Solid Structural Evolution and Processing of Materials (Ministry of Education), Shandong University, Jinan, 250061, China; Carbon Fiber Engineering Research Center, School of Material Science and Engineering, Shandong University, Jinan, 250061, China
Meijie Yu: Key Laboratory for Liquid-Solid Structural Evolution and Processing of Materials (Ministry of Education), Shandong University, Jinan, 250061, China; Carbon Fiber Engineering Research Center, School of Material Science and Engineering, Shandong University, Jinan, 250061, China; Corresponding author. Key Laboratory for Liquid-Solid Structural Evolution and Processing of Materials (Ministry of Education), Shandong University, Jinan, 250061, China.
Qifen Wang: Shandong Institute of Nonmetallic Materials, Jinan, 250031, China
Huazhen Wei: Shandong Institute of Nonmetallic Materials, Jinan, 250031, China

Journal volume & issue: Vol. 93
p. 106892

Abstract

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Multi-walled carbon nanotubes (CNTs) were grown in-situ on the surface of carbon fibers (CFs) at low pressure by a vertical chemical vapor deposition (CVD) reactor. The surface of CFs was modified by electrochemical anodization, and the growth morphology and other properties of CNTs were analyzed by detailed techniques. The CNT-grown CF reinforced unidirectional hierarchical composite material based on the epoxy resin was prepared. The interlaminar shear strength (ILSS) indicates that the maximum strength of the composites reaches 108 MPa after the CNTs are grown on the CF surface with a 25.2% increase than that of the desized CF composites. The fracture surface of composites was observed by scanning electron microscopy (SEM) to further understand the interfacial fracture behavior and enhancement mechanism of CNTs-CF/epoxy composites. The significant improvement in the overall performance of the hierarchical composites can be attributed to the increased adhesion of the interface between the fibers and the resin. The presence of CNTs can restrict the molecular movement of the resin and achieve a strong anchoring interaction, thereby increasing the strength and toughness of the composites and reducing the stress concentration between the layers.

Published in Polymer Testing

ISSN: 0142-9418 (Print); 1873-2348 (Online)
Publisher: Elsevier
Country of publisher: United Kingdom
LCC subjects: Technology: Chemical technology: Polymers and polymer manufacture
Website: https://www.journals.elsevier.com/polymer-testing

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