1. Impact Behaviour of Hybrid Carbon Fibre Composites Reinforced with Silica Micro- and Functionalized Nanoparticles
- Author
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Fabrizio Scarpa, Tulio Hallak Panzera, Rodrigo Teixeira Santos Freire, Júlio Cesar dos Santos, André Luis Christoforo, and Luciano Machado Gomes Vieira
- Subjects
020303 mechanical engineering & transports ,Materials science ,Functionalized nanoparticles ,0203 mechanical engineering ,Chemical engineering ,Nanoparticle ,02 engineering and technology ,021001 nanoscience & nanotechnology ,0210 nano-technology - Abstract
This work investigates the effect of silica nanoparticles functionalized with poly-diallyldimethylammonium chloride (PDDA) and silica microparticle inclusions (1.0 wt% and 3.5 wt%) on the impact resistance of hybrid carbon fibre reinforced composite laminates (HCFRCs) and tensile modulus of particle reinforced polymers (PRPs) via Full-Factorial Design of Experiments. The data were analysed with Analysis of Variance (ANOVA). The inclusion of particles led to reduced impact absorption of HCFRCs, except for composites with 1.0 wt% of silica in microscale, which provides an increase of 11.75% in the impact resistance. Microstructural analysis of fractured impact samples revealed pull-out as the predominant fracture mode in 1.0 wt% silica microparticle composites. Such mechanism leads to impact energy dissipation which may explain the increased impact resistance of these samples.
- Published
- 2018
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