Eco-friendly Sandwich Panel Based on Recycled Bottle Caps Core and Natural Fibre Composite Facings
- PDF / 2,185,561 Bytes
- 10 Pages / 609 x 794 pts Page_size
- 82 Downloads / 189 Views
ISSN 1229-9197 (print version) ISSN 1875-0052 (electronic version)
Eco-friendly Sandwich Panel Based on Recycled Bottle Caps Core and Natural Fibre Composite Facings Pablo Resende Oliveira1,2, Julio Cesar dos Santos2, Sergio Luiz Moni Ribeiro Filho2, Bruna Torres Ferreira2, Tulio Hallak Panzera2*, and Fabrizio Scarpa3 1
Fraunhofer EMI, Ernst-Mach Institut, Freiburg im Breisgau, Freiburg 79104, Germany Centre for Innovation and Technology in Composite Materials (CITeC), Department of Mechanical Engineering, Federal University of São João del Rei (UFSJ), São João del Rei, 36307352, Brazil 3 Bristol Composites Institute (ACCIS), University of Bristol, Bristol, BS8 1TR, UK (Received July 29, 2019; Revised November 26, 2019; Accepted December 2, 2019)
2
Abstract: This is the first attempt to combine disposed bottle caps and natural fibres into sandwich panels. A full factorial design is performed to identify the effects of the skin type (aluminium or coir fibre reinforced laminates) and bottle cap core packing (cubic and orthotropic) on the mechanical properties of the proposed panels. The coir fibre composite skin provides maximum core shear strength, 29 % higher than the aluminium-based panels, in cubic packing, while the flexural modulus is reduced by 45 %. An interlocking effect between the skin and the core is evidenced when coir fibre composites are used. In addition, the cubic cell packing increases the specific mechanical properties, even though with a higher density. The results highlight a promising association of green components and plastic bottle caps for secondary structural applications. Keywords: Sandwich panel, Coir fibres, Bottle caps, Sustainability, Design of experiment
The cork core coating by resin enhanced flexural strength and reduced water absorption. Liu et al. [9] compared a sandwich panel based on coconut mesocarp bio-core and glass fibre skins with corrugated metal core. The combination of GFRP skins and coconut core resulted in a specific energy absorption seven times greater than the metal core panel. Sadeghian, Hristozov, and Wroblewski [10] compared panels made of synthetic materials, such as glass fibre skin and PP core, to panels consisting of natural components including flax fibres facing and cork agglomerate core. Comparable flexural stiffness between synthetic and natural panels was achieved when using thicker natural skins and cores. Chan et al. [11] manufactured a fully green panel composed of hemp fabric laminate as skin, tree sap-based epoxy as adhesive, and a castor oil-based polyurethane core reinforced with rice hull ash, with acceptable results to replace gypsum-based structures. Rao, Jayaraman and Bhattacharyya [12] have tested the use of sisal fibres as PP core filler reinforcement. Although reduced adhesion between the fibres and the matrix was observed, the 4-point bending test revealed significant improvements when compared to non-reinforced samples. The same authors also investigated the reinforcement of a PP honeycomb core with sawdust particles [13], which reac
Data Loading...
