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Stiffness, Energy Dissipation and Hyperelasticity in Hierarchical Multilayer Composite Nanocoated Open Cell Polyurethane Foams
Advanced Engineering Materials ( IF 3.4 ) Pub Date : 2019-10-14 , DOI: 10.1002/adem.201900459 Francesca Cura' 1 , Raffaella Sesana 1 , Xiao-Chong Zhang 2 , Fabrizio Scarpa 2 , Wen Jiang Lu 3 , Hua-Xin Peng 3
Advanced Engineering Materials ( IF 3.4 ) Pub Date : 2019-10-14 , DOI: 10.1002/adem.201900459 Francesca Cura' 1 , Raffaella Sesana 1 , Xiao-Chong Zhang 2 , Fabrizio Scarpa 2 , Wen Jiang Lu 3 , Hua-Xin Peng 3
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The paper describes the manufacturing, testing and modelling of a class of open cell polyurethane foams doped with multi-walled carbon nanotubes and nano polyurethane dispersions and subjected to quasi-static cycling compressive loading at large deformations. The doped nano-ink foams are produced using a multiple steps dip coating technique that makes possible the development of nanobased porous materials by post-processing existing off-the-shelf open cell foams. Tests are carried out up to 18.5% of compressive strain to identify loading/unloading moduli and energy absorbed after 5 cycles of stabilization. Hyperelastic Ogden models also considering the Mullins effect for cyclic loading are used to identify the constitutive parameters for these foams. The results show that the use of the multi-walled carbon nanotube layers provide an effective increase of the stiffness and energy absorbed compared to pristine and nano polyurethane dispersions-treated foams. The volume average energy absorbed after the stabilization cycles is increased by 200% compared to the pristine foam when the multi-walled carbon nanotube layers are used. The parameters of the constitutive models extracted from the tests show that these nano-ink foams can be modelled following state-of-the-art hyperelastic representations
中文翻译：
分层多层复合纳米涂层开孔聚氨酯泡沫的刚度、能量耗散和超弹性
该论文描述了一类掺杂多壁碳纳米管和纳米聚氨酯分散体的开孔聚氨酯泡沫的制造、测试和建模，并在大变形下承受准静态循环压缩载荷。掺杂的纳米墨水泡沫是使用多步骤浸涂技术生产的，该技术通过对现有的现成开孔泡沫进行后处理，使纳米多孔材料的开发成为可能。进行高达 18.5% 的压缩应变的测试，以确定 5 个稳定循环后的加载/卸载模量和吸收的能量。超弹性 Ogden 模型也考虑了循环载荷的穆林斯效应，用于确定这些泡沫的本构参数。结果表明，与原始和纳米聚氨酯分散体处理的泡沫相比，使用多壁碳纳米管层有效增加了刚度和吸收的能量。当使用多壁碳纳米管层时，与原始泡沫相比，稳定循环后吸收的体积平均能量增加了 200%。从测试中提取的本构模型的参数表明，这些纳米墨水泡沫可以按照最先进的超弹性表示进行建模
更新日期：2019-10-14
中文翻译：
分层多层复合纳米涂层开孔聚氨酯泡沫的刚度、能量耗散和超弹性
该论文描述了一类掺杂多壁碳纳米管和纳米聚氨酯分散体的开孔聚氨酯泡沫的制造、测试和建模，并在大变形下承受准静态循环压缩载荷。掺杂的纳米墨水泡沫是使用多步骤浸涂技术生产的，该技术通过对现有的现成开孔泡沫进行后处理，使纳米多孔材料的开发成为可能。进行高达 18.5% 的压缩应变的测试，以确定 5 个稳定循环后的加载/卸载模量和吸收的能量。超弹性 Ogden 模型也考虑了循环载荷的穆林斯效应，用于确定这些泡沫的本构参数。结果表明，与原始和纳米聚氨酯分散体处理的泡沫相比，使用多壁碳纳米管层有效增加了刚度和吸收的能量。当使用多壁碳纳米管层时，与原始泡沫相比，稳定循环后吸收的体积平均能量增加了 200%。从测试中提取的本构模型的参数表明，这些纳米墨水泡沫可以按照最先进的超弹性表示进行建模
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