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Multi-wall carbon nanotubes do not necessarily improve the fracture behaviour of the epoxy matrix

Abstract: Carbon nanotubes (CNTs) have been widely studied in the literature for their potential benefits as reinforcement in epoxy matrices. However, the enhancement that these nano-materials can provide to the corresponding epoxy matrix is largely dependent on the manufacturing process and other factors such as the wt.% or the nanotube type, showing different effects on the resulting mechanical properties. In this study, five contents of multi-wall carbon nanotubes (MWCNTs) were introduced in an epoxy resin to analyse their effects on both tensile and fracture properties, with the fracture behaviour being characterised in cracked and in notched conditions (with various radii). The experimental results showed a drastic deterioration of the tensile strength for MWCNTs contents higher than 0.1 wt.%, and no benefit was found in the fracture resistance (only conducted for 0.1 wt.% due to the negative effect observed in the tensile results). Therefore, it seems that the CNTs do not always improve the fracture behaviour of the epoxy matrix.

Otras comunicaciones del congreso o articulos relacionados con autores/as de la Universidad de Cantabria

 Congreso: International Conference on Fracture and Structural Integrity (26th : 2021 : Turín)

 Editorial: Elsevier B.V.

 Año de publicación: 2021

 Nº de páginas: 8

 Tipo de publicación: Comunicación a Congreso

 DOI: 10.1016/j.prostr.2021.10.015

 ISSN: 2452-3216

 Proyecto español: PGC2018-095400-B-I00

 Url de la publicación: https://doi.org/10.1016/j.prostr.2021.10.015