Properties of multi-walled carbon nanotubes grown three-dimensional (3D) woven carbon/epoxy multiscale composites: Experimental study

摘要: Multiwalled carbon nanotubes (MWCNTs) were grown onto the surface of woven carbon fiber fabrics (CFFs) by using a chemical vapor deposition method. The mechanical and electrical properties of MWCNTs grown three-dimensional (3D) woven carbon/epoxy multiscale composite (CP-gCNT-E) structures were experimentally investigated. The warp directional flexural and interlaminar shear strength of CP-gCNT-E was slightly decreased by 18.26% and 28.32%, respectively compared to the pristine sample. However, the CP-gCNT-E composite at 20 °C showed 595.82% (7.0 folds) higher electrical conductivity than the pristine. On the other hand, delamination was suppressed via three dimensional vertically aligned three dimensional networks of grown carbon nanotubes (gCNTs) in the through-the-thickness direction of multiscale composite with various failure mechanism including entangled gCNT straightening …