Effects of Length and Oxidation of Multi-walled Carbon Nanotubes on the Mechanical and Electrical Properties for Epoxy Matrix Composites 


Vol. 23,  No. 5, pp. 1332-1341, May  2022
10.1007/s12221-022-3335-9


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  Abstract

This work investigated the effects of length and oxidation of multiwalled carbon nanotubes (CNTs) on the interfacial strength, fracture toughness enhancement and conductivity for epoxy matrix composites by experiment. Firstly, a seven-step processing scheme was proposed to obtain highly dispersed CNT-epoxy composites. Subsequently, two feasible methods were presented to characterize the interfacial strength and used to study the effects of length and oxidation of CNTs on the interfacial strength. Thirdly, based on the experimental results of the fracture toughness of CNT-epoxy composites, we proposed a new fracture theory for CNT-based composites which is contrary to the conventional fracture theory for fiberbased composites. The experimental results show that the fracture toughness enhancement reaches maximum at the critical oxidation time, when the interfacial strength equals CNT strength. At last, to obtain CNT-epoxy composites with both high mechanical and electrical properties, a feasible solution was put forward.

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  Cite this article

[IEEE Style]

W. Jia, Z. Chen, L. Fang, "Effects of Length and Oxidation of Multi-walled Carbon Nanotubes on the Mechanical and Electrical Properties for Epoxy Matrix Composites," Fibers and Polymers, vol. 23, no. 5, pp. 1332-1341, 2022. DOI: 10.1007/s12221-022-3335-9.

[ACM Style]

Wenbin Jia, Zhi Chen, and Lei Fang. 2022. Effects of Length and Oxidation of Multi-walled Carbon Nanotubes on the Mechanical and Electrical Properties for Epoxy Matrix Composites. Fibers and Polymers, 23, 5, (2022), 1332-1341. DOI: 10.1007/s12221-022-3335-9.