Flexure resistant 3D printed zeolite-inspired structures

Autor(es)

Ambekar, Rushikesh S. ^[1] ; Oliveira, Eliezer F. ^[2] ; Kushwaha, Brijesh ^[1] ; Pal, Varinder ^[1] ; Ajayan, Pulickel M. ^[3] ; Roy, Ajit K. ^[4] ; Galvao, Douglas S. ^{[2, 5]} ; Tiwary, Chandra S. ^{[3, 1]}

Afiliação do(s) autor(es)

^[1] Indian Inst Technol Kharagpur, Met & Mat Engn, Kharagpur 721302, W Bengal - India

^[2] State Univ Campinas UNICAMP, Appl Phys Dept, Campinas, SP - Brazil

^[3] Rice Univ, Dept Mat Sci & NanoEngn, Houston, TX 77005 - USA

^[4] Air Force Res Lab, Mat & Mfg Directorate, Wright Patterson AFB, OH 45433 - USA

^[5] State Univ Campinas UNICAMP, Ctr Computat Engn & Sci CCES, Campinas, SP - Brazil

• Tipo de documento: Artigo Científico
• Fonte: ADDITIVE MANUFACTURING; v. 47, NOV 2021.
• Citações Web of Science: 0

Resumo

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. (AU)

• Processo FAPESP: 16/18499-0 - Investigação de propriedades estruturais, mecânicas e funcionais de nanoestruturas de carbono
• Beneficiário: Eliezer Fernando de Oliveira
• Modalidade de apoio: Bolsas no Brasil - Pós-Doutorado
• Processo FAPESP: 19/07157-9 - Projetando novas estruturas 3d a partir de modelos de zeólitas para aplicações em impressão 3d
• Beneficiário: Eliezer Fernando de Oliveira
• Modalidade de apoio: Bolsas no Exterior - Estágio de Pesquisa - Pós-Doutorado
• Processo FAPESP: 13/08293-7 - CECC - Centro de Engenharia e Ciências Computacionais
• Beneficiário: Munir Salomao Skaf
• Modalidade de apoio: Auxílio à Pesquisa - Centros de Pesquisa, Inovação e Difusão - CEPIDs