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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
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.
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页码:2298 / 2302
页数:5
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