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Materials 2015, 8(6), 3519-3531; doi:10.3390/ma8063519

Role of Interphase in the Mechanical Behavior of Silica/Epoxy Resin Nanocomposites

1
Department of Mechanical and Materials Engineering, University of Nebraska-Lincoln, Lincoln, NE 68588-0656, USA
2
Nebraska Center for Materials and Nanoscience, Lincoln, University of Nebraska-Lincoln, NE 68588-0656, USA
3
Department of Growth & Development, University of Nebraska Medical Center, College of Dentistry, Lincoln, NE 68583-0750, USA
4
Key Laboratory of Education Ministry for Modern Design and Rotor-Bearing System, Xi'an Jiaotong University, Xi'an 710049, China
*
Author to whom correspondence should be addressed.
Academic Editor: Ihtesham ur Rehman
Received: 31 January 2015 / Accepted: 8 June 2015 / Published: 16 June 2015
(This article belongs to the Special Issue Dental Materials)
View Full-Text   |   Download PDF [1262 KB, uploaded 16 June 2015]   |  

Abstract

A nanoscale representative volume element has been developed to investigate the effect of interphase geometry and property on the mechanical behavior of silica/epoxy resin nanocomposites. The role of interphase–matrix bonding was also examined. Results suggested that interphase modulus and interfacial bonding conditions had significant influence on the effective stiffness of nanocomposites, while its sensitivities with respect to both the thickness and the gradient property of the interphase was minimal. The stiffer interphase demonstrated a higher load-sharing capacity, which also increased the stress distribution uniformity within the resin nanocomposites. Under the condition of imperfect interfacial bonding, the effective stiffness of nanocomposites was much lower, which was in good agreement with the documented experimental observations. This work could shed some light on the design and manufacturing of resin nanocomposites. View Full-Text
Keywords: nano-structures; interface/interphase; mechanical properties; computational modeling; representative volume element nano-structures; interface/interphase; mechanical properties; computational modeling; representative volume element
This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited. (CC BY 4.0).

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MDPI and ACS Style

Hua, Y.; Gu, L.; Premaraj, S.; Zhang, X. Role of Interphase in the Mechanical Behavior of Silica/Epoxy Resin Nanocomposites. Materials 2015, 8, 3519-3531.

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