Synergistic Effect of Functionalized Carbon Nanotubes and Micron-Sized Rubber Particles on the Mechanical Properties of Epoxy Resin

被引：19
|
作者：
Zewde, Berhanu [1 ]
Pitliya, Praveen [1 ]
Karim, Alamgir [2 ]
Raghavan, Dharmaraj [1 ]
机构：
[1] Howard Univ, Dept Chem, Washington, DC 20059 USA
[2] Univ Akron, Dept Polymer Engn, Akron, OH 44325 USA
来源：
MACROMOLECULAR MATERIALS AND ENGINEERING | 2016年 / 301卷 / 05期
关键词：
dispersion; fracture toughness; functionalized carbon nanotube; rubber toughened epoxy; stress whitening; TOUGHENED EPOXY; NANOCOMPOSITES; DISPERSION; MORPHOLOGY; STRENGTH;
D O I：
10.1002/mame.201500279
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
In this study, the synergistic effect of functionalized carbon nanotubes (fCNT) and micronsized rubber particles in improving the thermomechanical properties of epoxy resin is demonstrated. fCNT is mixed with carboxyl-terminated butadiene acrylonitrile toughened epoxy (CTBNTE) by ultrasonication followed by the addition of curing agent and mixing with planetary shear mixer. A significant improvement is noticed in fracture toughness (approximate to 200%) and thermal stability (approximate to 12 degrees C) of fCNT-filled CTBNTE system but only a marginal improvement in fracture toughness and thermal stability of pristine CNT-filled CTBNTE relative to epoxy. Dispersion of fCNT is better than pristine CNT in the epoxy matrix. Scanning electron microscope (SEM) images of fractured surface of fCNT-filled CTBNTE reveal plastic deformation zone, stress whitening, and overall rougher surface compared to pristine CNT-filled CTBNTE. The findings of our work show promise for use of fCNT in conjunction with a rubber toughener as filler for improving the properties of epoxy resin for advanced structural applications.
引用
收藏
页码：542 / 548
页数：7
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