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Investigating interaction between CNT and polymer using cohesive zone model

机译:使用粘性区模型研究CNT与聚合物之间的相互作用

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The main goal of this research is to analyze mechanical properties of embedded carbon nanotubes (CNTs) in polymer using continuum modeling. A 3D finite element model of long CNT, polymer and the interface between CNT and polymer is constructed. Cohesive zone modeling is employed to capture the non-bonded van der Waals interactions between CNT and polymer. Appropriate constitutive law is used for mathematical description of the adhesion between CNT and polymer occurring at the interface region. Constructed FE model is subjected to five different load cases to extract mechanical properties of CNT/polymer at micro scale in the presence of CNT-polymer interface. The embedded CNT and the interface are replaced with an equivalent fiber. Observing transversely isotropic behavior, calculated mechanical properties of the virtual equivalent fiber are in a very good agreement with other reported values in literature. Finally, an investigation of CNT length effect on the reinforcement is carried out using a unit-cell containing embedded short-CNT in polymer. POLYM. COMPOS., 39:3903-3911, 2018. (c) 2017 Society of Plastics Engineers
机译:本研究的主要目的是使用连续型建模分析聚合物中嵌入碳纳米管(CNT)的机械性能。构建了长CNT,聚合物和CNT和聚合物界面的3D有限元模型。使用粘性区域建模用于捕获CNT和聚合物之间的非粘结范德华相互作用。适当的组成型法用于在界面区域中发生CNT和聚合物之间的粘附性的数学描述。在CNT-聚合物界面存在下,构造的Fe模型进行五种不同的载荷病例以在微刻度下在微刻度提取CNT /聚合物的机械性能。嵌入式CNT和界面用等效光纤替换。观察横向各向同性行为,虚拟等效纤维的计算机械性能与文献中的其他报道的值非常吻合。最后,使用含有聚合物中的嵌入式短CNT的单位细胞进行CNT长度对增强件的研究。聚合物。 Compos。,39:3903-3911,2018。(c)2017塑料工程师协会

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