Efeitos da adição de nanotubos de carbono de parede simples nas propriedades mecânicas de compósitos de fibra de carbono/epóxi

Abstract

A fabrication protocol for a hierarchical composite consisting of an epoxy matrix reinforced with carbon fibers and single-walled carbon nanotubes was developed. The aim was to use readily available and easily procured materials while minimizing the complexity and number of fabrication stages, so that the protocol can be easily scaled up. A procedure was developed using a commercial product composed of a mixture of nanotubes with dispersing agents. A planetary mixer was used to disperse the product into the resin in a single step, and the composite plates were produced via filament winding. Flexural tests indicated an improvement of over 10% in flexural strength with the addition of 87 ppm of nanotubes. Furthermore, the dispersion quality was found to be high, as assessed by scanning electron microscopy and other methods.