Effects of silane-modified carbon nanotubes on flexural and fracture behaviors of carbon nanotube-modified epoxy/basalt composites

被引：114
|
作者：
Kim, M. T. [2 ]
Rhee, K. Y. [1 ]
Park, S. J. [3 ]
Hui, D. [1 ,4 ]
机构：
[1] Kyung Hee Univ, Sch Mech Engn, Yongin 446701, South Korea
[2] Gumi Elect & Informat Technol Res Inst, Gumi 730853, South Korea
[3] Inha Univ, Dept Chem, Inchon 402751, South Korea
[4] Univ New Orleans, Dept Mech Engn, New Orleans, LA 70148 USA
来源：
COMPOSITES PART B-ENGINEERING | 2012年 / 43卷 / 05期
基金：
新加坡国家研究基金会;
关键词：
Polymer-matrix composites; Mechanical properties; Surface treatments; MECHANICAL-PROPERTIES; POLYMER COMPOSITES; FIBER HYBRID; SURFACTANT; TOUGHNESS;
D O I：
10.1016/j.compositesb.2011.12.007
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
We investigated the effects of carbon nanotube (CNT) modification with silane on the flexural and fracture behaviors of modified carbon nanotube epoxy/basalt (CNT/epoxy/basalt) composites. Flexural and mode I fracture tests were performed using acid-treated and silane-treated CNT/epoxy/basalt composites, respectively. FT-IR analysis was conducted to determine the chemical change on the surface of basalt fiber due to the silane modification. After the fracture tests, the fracture surfaces of the CNT/epoxy/basalt composites were examined with scanning electron microscopy (SEM) to investigate the fracture mechanisms of the CNT/epoxy/basalt composites, depending on the CNT modification. The results show that the flexural modulus and strength of silane-treated CNT/epoxy/basalt composites are similar to 10% and similar to 14% greater, respectively, than those of acid-treated CNT/epoxy/basalt composites. The fracture toughness G(Ic) of silane-treated DU/epoxy/basalt composites was similar to 40% greater than that of acid-treated CNT/epoxy/basalt composites. SEM examination revealed that the improvement in the flexural and fracture properties of silane-treated CNT/epoxy/basalt composites occurred due to enhanced dispersion and interfacial interaction between the silane-modified CNTs and the epoxy. (C) 2012 Elsevier Ltd. All rights reserved.
引用
收藏
页码：2298 / 2302
页数：5
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