Effect of amino-functionalized carbon nanotube interleaves on theinterlaminar properties of carbon fibrous composites

doi:10.19936/j.cnki.2096-8000.20220228.013

Abstract

Abstract: Carbon fiber reinforced plastics are widely used, and their weak interlaminar performance can easily cause delamination damage. In order to improve the interlaminar shear resistance of the laminates, un-functionalized (CNT) and amino-functionalized carbon nanotube (NH₂-CNT) films were prepared in this paper, and their effects on the mode Ⅱ critical strain energy release rate (G_ⅡC) and interlaminar shear strength (ILSS) of laminates were investigated. The results show that when the thickness of the interleaves were 31.1 μm, compared with the blank laminate, the CNT interleaf would reduce the G_ⅡC and ILSS by 19.2% and 6.59%, respectively, while the NH₂-CNT interleaf could improve the G_ⅡC and ILSS by 51.7% and 15.4%, respectively. It is found that the good interfacial bonding between NH₂-CNT and epoxy resin contributes the improvement of interlaminar shear properties of the laminates.

Key words: amino-functionalized carbon nanotubes (NH₂-CNT), mode Ⅱ interlaminar fracture toughness, interlaminar shear strength, carbon fiber reinforced plastic

CLC Number:

TB332

FENG Xu, LIU Ling. Effect of amino-functionalized carbon nanotube interleaves on theinterlaminar properties of carbon fibrous composites[J]. COMPOSITES SCIENCE AND ENGINEERING, 2022, 0(2): 82-88.

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