Mechanical properties of carbon nanotube/polymer composites

Abstract

The remarkable mechanical properties of carbon nanotubes, such as high elastic modulus and tensile strength, make them the most ideal and promising reinforcements in substantially enhancing the mechanical properties of resulting polymer/carbon nanotube composites. It is acknowledged that the mechanical properties of the composites are significantly influenced by interfacial interactions between nanotubes and polymer matrices. The current challenge of the application of nanotubes in the composites is hence to determine the mechanical properties of the interfacial region, which is critical for improving and manufacturing the nanocomposites. In this work, a new method for evaluating the elastic properties of the interfacial region is developed by examining the fracture behavior of carbon nanotube reinforced poly (methyl methacrylate) (PMMA) matrix composites under tension using molecular dynamics simulations. The effects of the aspect ratio of carbon nanotube reinforcements on the elastic properties, i.e. Young's modulus and yield strength, of the interfacial region and the nanotube/polymer composites are investigated. The feasibility of a three-phase micromechanical model in predicting the elastic properties of the nanocomposites is also developed based on the understanding of the interfacial region.

Effect of quartz sand on compressive strength of the solid waste composite

“…Prior to PU addition, the binding among solid waste particles only is formed due to closer the particles distances as Van der Waals interaction appearance. However, as the PU presence, an interfacial bonds governed by van der Waals interaction occurs between solid waste particles and polymeric active group [20], especially its carbonyl group. Further, the solid waste consisting of leaves waste is very rich with several anorganic materials such as Fe, Mg, K, Ca in complex compound forms.…”

Mathematical Analysis and Modeling of Single-Walled Carbon Nanotube Composite Material for Antenna Applications

“…Hence, the relative complex permittivity of SWCNT-composite material is modeled with either Equations (14) and (15) or Equations (17) and (18), where both equation sets provide the same results. Therefore, the EM parameters of SWCNT-composite material extracted (or estimated) in this work is utilized to represent this composite material in different 3D EM simulation software packages including CST (MWS), HFSS and others.…”

“…CNTscomposite materials are constructed, based on two approaches to obtain new materials with improved properties. The first approach depends on synthesis of CNTs with other materials through different chemical procedures, in order to construct new materials based-CNTs [15][16][17][18][19]. Meanwhile, the second approach depends on coating CNTs (SWCNTs and MWCNTs) by other materials, in order to improve the surfaces properties of CNTs.…”

A studying on load transfer in carbon nanotube/epoxy composites under tension

“…It has been revealed that load transfer from matrix to CNTs plays an important role in enhancing mechanical properties of composites. Numerous studies on load transfer have been carried out for identifying mechanical properties of composites [2][3][4][5][6][7][8]. Schadler et al [2].…”