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Prediction of the elastic modulus of LLDPE/CNT nanocomposites by analytical modeling and finite element analysis
Materials Today Communications ( IF 3.8 ) Pub Date : 2020-03-16 , DOI: 10.1016/j.mtcomm.2020.101070
Ilias Charitos , Anastasios Drougkas , Evagelia Kontou

In the present work, the effective elastic modulus of carbon nanotube (CNT) polymer nanocomposites has been evaluated through micromechanics modeling and finite element analysis (FEA). In the micromechanics model, the inherent trend of CNTs to aggregate is taken into account, considering a two-phase material system, that of the matrix with the finely dispersed CNTs and the inclusions, involving agglomerated CNTs and matrix material. A new model is proposed for the elastic stiffness evaluation of the two phases and the elastic stiffness of the nanocomposite, introducing two aggregation parameters. It was proved that this analysis was rational and operative. The same aggregation concept has been investigated using FEA, and a comparative study between the two procedures was performed. Furthermore, an additional treatment with FEA was performed, based on a three-phase model, including the matrix, the CNTs and the interphase. A parametric analysis has been executed and a comparison with experimental data of linear low density polyethylene (LLDPE)/CNT nanocomposites has been performed.



中文翻译:

通过分析建模和有限元分析预测LLDPE / CNT纳米复合材料的弹性模量

在当前的工作中,碳纳米管(CNT)聚合物纳米复合材料的有效弹性模量已经通过微力学建模和有限元分析(FEA)进行了评估。在微力学模型中,考虑到两相材料系统,考虑了碳纳米管聚集的固有趋势,即具有细分散的碳纳米管和包含团聚的碳纳米管和基体材料的夹杂物的基体。提出了一个新的模型,用于评估两相的弹性刚度和纳米复合材料的弹性刚度,引入了两个聚集参数。事实证明,这种分析是合理和有效的。使用FEA对相同的聚合概念进行了研究,并对这两个过程进行了比较研究。此外,还进行了FEA的其他治疗,基于三相模型,包括基质,碳纳米管和中间相。已经执行了参数分析,并与线性低密度聚乙烯(LLDPE)/ CNT纳米复合材料的实验数据进行了比较。

更新日期:2020-03-16
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