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Journal of Shanghai University >

2018 , Vol. 24 >Issue 6: 961 - 967

DOI: https://doi.org/10.12066/j.issn.1007-2861.1859

Research Paper

Temperature effect on interfacial shear strength of carbon nanotube fiber/epoxy resin composites

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  • 1. School of Materials Science and Engineering, Shanghai University, Shanghai 200444, China
    2. Suzhou Institute of Nano-Tech and Nano-Bionics, Chinese Academy of Sciences, Suzhou 215123, Jiangsu, China

Received date: 2016-12-06

  Online published: 2018-12-26

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Abstract

Carbon nanotube (CNT) fibers possess excellent mechanical, electrical and thermal properties, such that they have been considered as ideal reinforcement for future high-performance polymeric composites. This study investigates the temperature effect on the interfacial shear strength between CNT fibers and epoxy resin by performing microdroplet tests, and optical/electrical microscopy analyses. It is found that the interfacial shear strength decreases obviously with increasing ambient temperature. This is mainly because the coefficient of thermal expansion of CNT fibers is much lower than that of the resin so that the fiber/resin interface debonds upon heating. Meanwhile, the resin becomes soft at high temperatures, also degrading the interfacial bonding strength. This study provides guidance for the design of carbon nanotube fibers based composite materials.

Key words： carbon nanotube fibers; epoxy resin; interfacial shear strength; temperature effect

Cite this article

MA Qili, ZHANG Cuixia, WANG Han, JIANG Jin, LÜ Weibang . Temperature effect on interfacial shear strength of carbon nanotube fiber/epoxy resin composites[J]. Journal of Shanghai University, 2018 , 24(6) : 961 -967 . DOI: 10.12066/j.issn.1007-2861.1859

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