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Eco-friendly Sandwich Panel Based on Recycled Bottle Caps Core and Natural Fibre Composite Facings
Pablo Resende Oliveira,Julio Cesar dos Santos,Sergio Luiz Moni Ribeiro Filho,Bruna Torres Ferreira,Tulio Hallak Panzera,Fabrizio Scarpa 한국섬유공학회 2020 Fibers and polymers Vol.21 No.8
This is the first attempt to combine disposed bottle caps and natural fibres into sandwich panels. A full factorialdesign is performed to identify the effects of the skin type (aluminium or coir fibre reinforced laminates) and bottle cap corepacking (cubic and orthotropic) on the mechanical properties of the proposed panels. The coir fibre composite skin providesmaximum core shear strength, 29 % higher than the aluminium-based panels, in cubic packing, while the flexural modulus isreduced by 45 %. An interlocking effect between the skin and the core is evidenced when coir fibre composites are used. Inaddition, the cubic cell packing increases the specific mechanical properties, even though with a higher density. The resultshighlight a promising association of green components and plastic bottle caps for secondary structural applications.