Preprint Article Version 1 Preserved in Portico This version is not peer-reviewed

Micromechanical Modeling of Nacre-mimetic Ti3C2-MXene Nanocomposites with Viscoelastic Polymer Matrix

Version 1 : Received: 11 June 2021 / Approved: 14 June 2021 / Online: 14 June 2021 (10:34:58 CEST)

How to cite: Srivatsa, S.; Packo, P.; Mishnaevsky Jr., L.; Uhl, T.; Grabowski, K. Micromechanical Modeling of Nacre-mimetic Ti3C2-MXene Nanocomposites with Viscoelastic Polymer Matrix. Preprints 2021, 2021060347 (doi: 10.20944/preprints202106.0347.v1). Srivatsa, S.; Packo, P.; Mishnaevsky Jr., L.; Uhl, T.; Grabowski, K. Micromechanical Modeling of Nacre-mimetic Ti3C2-MXene Nanocomposites with Viscoelastic Polymer Matrix. Preprints 2021, 2021060347 (doi: 10.20944/preprints202106.0347.v1).

Abstract

A new two-dimensional nanomaterial – Titanium Carbide MXene (Ti3C2-MXene) – was reported in 2011. In this work, the microscale models of Ti3C2-MXene nanomaterial are considered with polymer matrix. The nanocomposites are modeled using nacre-mimetic brick-and-mortar assembly configurations due to enhanced mechanical properties and interlocking mechanism between the Ti3C2-MXene (brick) and polymer matrices (mortar). The polymer matrix material (Epoxy-resin) is modeled with elastic and viscoelastic behavior (Kelvin-Voigt Model). The Finite Element Method is used for numerical analysis of the microscale models with the multi-point constraint method to include Ti3C2-MXene fillers in the polymer matrix. Ti3C2-MXenes are considered as thick plate elements with transverse shear effects. The response of elastic and viscoelastic models of polymer matrix are studied. Finally, a tensile and compressive load is applied at the microscale and the effective load transfer due to nacre-mimetic configuration is discussed. This paper provides nacre-mimetic models to pre-design the nanocomposite for optimal performance with damage resistance and enhanced strength.

Keywords

MXenes; Nanocomposites; Bioinspired model; Finite element method; Microscale; Micromechanical model; Kelvin-Voigt model; Damping

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