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Flexure resistant 3D printed zeolite-inspired structures
Additive Manufacturing ( IF 11.0 ) Pub Date : 2021-09-17 , DOI: 10.1016/j.addma.2021.102297
Rushikesh S. Ambekar 1 , Eliezer F. Oliveira 2 , Brijesh Kushwaha 1 , Varinder Pal 1 , Pulickel M. Ajayan 3 , Ajit K. Roy 4 , Douglas S. Galvao 2, 5 , Chandra S. Tiwary 1, 3
Affiliation  

Polymer-based materials exhibit a good combination of strength and ductility but limited flexural strength. Here we demonstrate a family of new zeolite templated interconnected carbon nanotubes like porous networks with unique topologies with enhanced load-bearing and energy-absorbing capabilities. The structures were initially obtained from fully atomistic molecular dynamics simulations and then 3D printed using polylactide serving as an upscaled molecular model. All the structures show multi-fold enhancement in compression and flexural strength as compared to their solid counterparts. The 3D printed structure has 575.41 MPa compressive Young’s modulus and 318.87 MPa flexural modulus. The mechanical of the atomic models and 3D printed structures show some scale-independent (in a sense that atomic and macro models show similar behavior) features due to similar topological features and deformation conditions.



中文翻译:

抗弯曲的 3D 打印沸石结构

聚合物基材料表现出强度和延展性的良好结合,但弯曲强度有限。在这里,我们展示了一系列新型沸石模板化互连碳纳米管,如多孔网络,具有独特的拓扑结构,具有增强的承载和能量吸收能力。这些结构最初是从完全原子分子动力学模拟中获得的,然后使用聚乳酸作为放大的分子模型进行 3D 打印。与它们的实体对应物相比,所有结构在压缩和弯曲强度方面均表现出多倍的增强。3D 打印结构具有 575.41 MPa 的压缩杨氏模量和 318.87 MPa 的弯曲模量。

更新日期:2021-09-27
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