Recycled polyethylene bottle caps as sandwich panel circular honeycomb: Experimental and numerical approach,Polymer Composites

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Recycled polyethylene bottle caps as sandwich panel circular honeycomb: Experimental and numerical approach
Polymer Composites ( IF 4.8 ) Pub Date : 2020-09-11 , DOI: 10.1002/pc.25742
Murilo Monteiro Jesus ₁ , Lucas Braga Lopes Gato ₁ , Pablo Resende Oliveira ₂ , Sergio Luiz Moni Ribeiro Filho ₁ , Maikson Luiz Passaia Tonatto ₃ , Tulio Hallak Panzera ₁ , Fabrizio Scarpa ₄

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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.

中文翻译：

回收聚乙烯瓶盖作为夹心板圆形蜂窝：实验和数值方法

这项工作描述了由再生聚乙烯（PE）瓶盖制成的铝皮三明治板作为可持续的蜂窝芯。进行了全因子设计，以识别盖的方向（单个和交替的盖），皮肤粗糙度（光滑和粗糙的基材）和粘合剂的类型（环氧树脂或聚酯聚合物）对面板机械性能的影响。进行数值分析以更好地评估所涉及的失效机制。与可分解设计的替代级别相比，用环氧粘合剂，光滑的铝皮和单向盖制成的夹芯板在失效时具有更高的机械性能。观察到岩心剪切应力（0.38 MPa），面对应力（56.75 MPa），岩心剪切模量（16.70 MPa）和弯曲模量（1437.47 MPa）的增加。

更新日期：2020-11-17

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