温度对碳纳米管纤维/环氧树脂界面剪切强度的影响

doi:10.12066/j.issn.1007-2861.1859

Abstract

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

CLC Number:

TB332

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（Natural Science Edition）, 2018, 24(6): 961-967.

Figures/Tables 7

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

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