Thermal and Tensile Properties of Epoxy Nanocomposites Reinforced by Silane-functionalized Multiwalled Carbon Nanotubes |
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| Authors: | Hee-Cheul Kim Sun-Kuk Kim Jeong Tai Kim Kyong-Yop Rhee John Kathi |
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| Institution: | 1. Department of Architectural Engineering , Kyung Hee University , Yongin, Republic of Korea;2. Department of Mechanical Engineering , Kyung Hee University , Yongin, Republic of Korea |
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| Abstract: | Epoxy nanocomposites with unmodified multiwalled carbon nanotubes (u-MWCNTs) and silanized multiwalled carbon nanotubes (si-MWCNTs) were prepared by a cast molding method. The effects of 3-aminopropyltriethoxysilane functionalization of MWCNTs on thermal, tensile, and morphological properties of the nanocomposites were examined. The nanocomposites were characterized by thermogravimetric analysis, dynamic mechanical thermal analysis, and tensile testing. The results showed that epoxy composites based on si-MWCNTs showed better thermal stability, glass transition temperature, and tensile properties than the composites based on u-MWCNTs. These results prove the effect of silane functionalization on the interfacial adhesion between epoxy and MWCNTs. This was further confirmed by morphology study of fractured surfaces of nanocomposites by field emission scanning electron microscopy. |
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| Keywords: | epoxy mechanical properties multiwalled carbon nanotubes nanocomposites silanization thermal properties |
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