Multiscale modeling of carbon fiber/carbon nanotube/epoxy hybrid composites: Comparison of epoxy matrices

被引：65
作者：
Radue, M. S. [1 ]
Odegard, G. M. [1 ]
机构：
[1] Michigan Technol Univ, Houghton, MI 49931 USA
来源：
COMPOSITES SCIENCE AND TECHNOLOGY | 2018年 / 166卷
关键词：
Nano composites; Molecular dynamics; Mechanical properties; Interface; Interphase; MOLECULAR-DYNAMICS SIMULATION; DIFFERENT CURING CYCLES; MECHANICAL-PROPERTIES; NANOCOMPOSITES; POLYMERS; DISPERSION; STIFFNESS; STRAIN; RESINS; RATES;
D O I：
10.1016/j.compscitech.2018.03.006
中图分类号：
TB33 [复合材料];
学科分类号：
摘要：
This study addresses the multiscale modeling of hybrid composites composed of carbon fibers (CFs), carbon nanotubes (CNTs), and three different epoxy systems (di-, tri-, and tetra-functional resin epoxies). Molecular dynamics (MD) simulations are performed to predict the molecular-level interfacial and mechanical behavior of CNT embedded in epoxy. Micromechanics calculations are implemented to translate the molecular phenomena observed to predict the mechanical properties of CNT/epoxy composites with randomly oriented CNTs and CF/CNT/epoxy systems with aligned CFs and randomly oriented CNTs. The model is validated with experimental Young's modulus values for CNT/epoxy available in the literature. The results demonstrate that the tri- and tetra-functional resin epoxies demonstrate comparably high moduli over the di-functional resin for CNT concentrations up to 5 wt%. For higher CNT loadings, the tri-functional resin epoxy is predicted to outperform the other resins with respect to stiffness due to its strong interaction with CNTs and high bulk stiffness. (C) 2018 Elsevier Ltd. All rights reserved.
引用
收藏
页码：20 / 26
页数：7
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