Recycled polyethylene bottle caps as sandwich panel circular honeycomb: Experimental and numerical approach
Source abstract
Abstract
Abstract This work describes aluminium skin sandwich panels made of recycled polyethylene (PE) bottle caps as a sustainable honeycomb core. A full factorial design is carried out to identify the effects of the orientation of the caps (single and alternated caps), skin roughness (smooth and rough substrate) and the type of adhesive (epoxy or polyester polymer) on the mechanical properties of the panels. Numerical analysis is performed to better assess the failure mechanisms involved. Sandwich panels made with epoxy adhesive, smooth aluminium skin and single oriented caps obtain greater mechanical properties at failure compared to the alternative levels of the factorial design. Increased results are observed for core shear stress (0.38 MPa), facing stress (56.75 MPa), core shear modulus (16.70 MPa), and flexural modulus (1437.47 MPa). This performance reveals an alternative recycling route for used PE bottle caps in structural and sustainable applications.
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Research context
OpenAlex topics: Cellular and Composite Structures · Natural Fiber Reinforced Composites · Polymer composites and self-healing
SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.
Affiliations
Centre for Innovation and Technology in Composite Materials (CIT^{e}C), Department of Mechanical Engineering Federal University of São João del Rei‐UFSJ São João del Rei Brazil
Institute of Sustainable Systems Engineering, Albert‐Ludwigs Universität Freiburg Freiburg im Breisgau Germany
Cachoeira do Sul Campus Federal University of Santa Maria‐UFSM Santa Maria Brazil
Bristol Composites Institute (ACCIS), University of Bristol School of Civil, Aerospace and Mechanical Engineering (CAME) Bristol UK
Funding
Conselho Nacional de Desenvolvimento Científico e Tecnológico · Coordenação de Aperfeiçoamento de Pessoal de Nível Superior
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