INFLUENCE OF ELECTROTHERMAL EFFECT ON THE SHEAR PROPERTIES OF CARBON NANOTUBE MODIFIED CARBON FIBROUS COMPOSITES

doi:10.19936/j.cnki.2096-8000.20210328.013

Abstract

Abstract: With the wide application in the aerospace engineering, carbon fiber reinforced resin matrix composites (CFRPs) are required not only to be used as structural parts, but also have thermal and electrical conductivity and other functional characteristics. Therefore, CFRPs often face a complex multi-field coupling environment, in which electrothermal coupling is accompanied by the application of highly conductive CFRPs. To analyze the influence of the introduction of CNTs on the electrothermal and shear properties of CFRPs, a porous film of carbon nanotube (CNTs) was prepared and introduced into the ±45° interface of the [±45°₂]_s laminate in this paper. Studies have shown that the introduction of CNTs films has increased the conductivity of CFRPs by 65%~180%, the surface temperature has increased by 10.8%~29.5%, and the shear strength and modulus have also been improved. At the same time, the increase of temperature can improve the mechanical properties of CFRPs, but this phenomenon is not obvious in CFRPs with CNTs films. This result shows that the CNTs films can not only improve the electrical and thermal properties of CFRPs, but also enhance the interlayer mechanical properties.

Key words: electrothermal effect, carbon nanotubes (CNTs), CFRP, conductivity, composites

CLC Number:

TB332

WANG Bing-chen, LIU Ling. INFLUENCE OF ELECTROTHERMAL EFFECT ON THE SHEAR PROPERTIES OF CARBON NANOTUBE MODIFIED CARBON FIBROUS COMPOSITES[J]. COMPOSITES SCIENCE AND ENGINEERING, 2021, 0(3): 82-87.

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