Plastic shear bands and fracture toughness improvements of nanoparticle filled polymers: A multiscale analytical model

被引：73
|
作者：
Salviato, Marco [1 ]
Zappalorto, Michele [1 ]
Quaresimin, Marino [1 ]
机构：
[1] Univ Padua, Dept Management & Engn, I-36100 Vicenza, Italy
来源：
COMPOSITES PART A-APPLIED SCIENCE AND MANUFACTURING | 2013年 / 48卷
关键词：
Nano-structures; Interface/Interphase; Fracture toughness; Shear bands; MODIFIED EPOXY POLYMERS; TOUGHENING MECHANISMS; NANOCOMPOSITES; COMPOSITES; NANOVOIDS; STRESS; MATRIX; GROWTH; SIZE;
D O I：
10.1016/j.compositesa.2013.01.006
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
In this paper a multiscale model is provided to assess the toughening improvements in nanoparticle filled polymers caused by the formation of localised plastic shear bands, initiated by the stress concentrations around nanoparticles. The model quantifies the energy absorbed at the nanoscale and accounts for the emergence of an interphase zone around the nanopartides. It is proved that the elastic properties of the interphase, which are different from those of the matrix, due to chemical interactions, highly affect the stress field rising around particles and the energy dissipation at the nanoscale. (C) 2013 Elsevier Ltd. All rights reserved.
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页码：144 / 152
页数：9
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