Enhancement of mechanical properties on nano-filled hybrid composites

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Impact response of nano reinforced mat glass/epoxy laminates

Publication . Ferreira, J.A.M.; Santos, D.S.C.; Capela, C.; Costa, J.D.M.

The present work intends to characterize the effect that nanoclay and carbon nanotubes matrix reinforcements have on low velocity impact response of epoxy/glass fiber composites. The composite matrix used was the epoxy resin Biresin® CR120 combined with the hardener CH120-3 and the fiberglass triaxial mats ETXT 450. The results of the present paper are discussed in terms of load-time, load-displacement, energy-time diagrams and damage. The incorporation of nanoparticles produces only small improvement of the impact response in terms of the peak load and specific recovery energy. Peak load decreases slightly with increasing percentage of nanoparticles reaching a maximum decrease of 6 % for 3 wt% of nanoclays. Specific recovery energy increases in comparison with control formulation, around 14–18 % for 0.5 wt% addition of nanotubes and 7–15 % for 1 wt% of nanoclays, respectively. Specific recovery energy tends to decrease for higher percentages of nanoparticles in consequence of its poor distribution. Damaged area apparent shows a small reduction with nanoparticle content.

2015-03-04Artigo científico

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Palavras-chave

Nanocomposites,Nanoparticles,Mechanical behaviour,Finite elements analysis, Engineering and technology ,Engineering and technology/Materials engineering

Entidade financiadora

Fundação para a Ciência e a Tecnologia, I.P.

Programa de financiamento

Concurso para Projectos de I&D em todos os Domínios Científicos - 2009

Número da atribuição

PTDC/EME-PME/113695/2009