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Effect of functionalization of multi-walled carbon nanotube on the curing behavior and mechanical property of multi-walled carbon nanotube/epoxy composites
Highlights ► COOH- and amino-MWCNTs were obtained and characterized. ► Epoxy-based composites with three different MWCNTs were fabricated. ► The addition of MWCNTs promoted the cure reaction of epoxy composites. ► The amino-MWCNT/epoxy composites achieved the highest tensile strength. ► Interface bonding was significantly improved by amino functionalization.
Abstract In this work, multi-walled carbon nanotubes (MWCNTs) were functionalized to fabricate MWCNT/epoxy composites by incorporating MWCNTs into an epoxy. Cure behavior of composites was investigated by differential scanning calorimetry. Thermo-mechanical behavior of the composite was then evaluated by dynamic mechanical analysis. Tensile strength, elastic modulus and maximum elongation were obtained by tensile test using the CMT-4204 universal testing machine. A field-emission scanning electron microscope was also used to characterize the fracture mechanism of composites and the dispersion state of MWCNTs in the epoxy. The results showed that the introduction of MWCNTs decreased the activation energy of the reaction and promoted the cure reaction. The addition of MWCNTs, especially amino-functionalized MWCNTs, clearly improved the tensile strength. The functionalized MWCNTs improved the interfacial bonding and made the dispersion of MWCNTs homogeneous in the matrix, giving the composites present a better mechanical property.
Effect of functionalization of multi-walled carbon nanotube on the curing behavior and mechanical property of multi-walled carbon nanotube/epoxy composites
Highlights ► COOH- and amino-MWCNTs were obtained and characterized. ► Epoxy-based composites with three different MWCNTs were fabricated. ► The addition of MWCNTs promoted the cure reaction of epoxy composites. ► The amino-MWCNT/epoxy composites achieved the highest tensile strength. ► Interface bonding was significantly improved by amino functionalization.
Abstract In this work, multi-walled carbon nanotubes (MWCNTs) were functionalized to fabricate MWCNT/epoxy composites by incorporating MWCNTs into an epoxy. Cure behavior of composites was investigated by differential scanning calorimetry. Thermo-mechanical behavior of the composite was then evaluated by dynamic mechanical analysis. Tensile strength, elastic modulus and maximum elongation were obtained by tensile test using the CMT-4204 universal testing machine. A field-emission scanning electron microscope was also used to characterize the fracture mechanism of composites and the dispersion state of MWCNTs in the epoxy. The results showed that the introduction of MWCNTs decreased the activation energy of the reaction and promoted the cure reaction. The addition of MWCNTs, especially amino-functionalized MWCNTs, clearly improved the tensile strength. The functionalized MWCNTs improved the interfacial bonding and made the dispersion of MWCNTs homogeneous in the matrix, giving the composites present a better mechanical property.
Effect of functionalization of multi-walled carbon nanotube on the curing behavior and mechanical property of multi-walled carbon nanotube/epoxy composites
Cui, Li-Jun (Autor:in) / Wang, Yi-Bin (Autor:in) / Xiu, Wen-Jun (Autor:in) / Wang, Wen-Yi (Autor:in) / Xu, Li-Hao (Autor:in) / Xu, Xiao-Bing (Autor:in) / Meng, Yan (Autor:in) / Li, Lu-Yan (Autor:in) / Gao, Jing (Autor:in) / Chen, Li-Ting (Autor:in)
24.01.2013
6 pages
Aufsatz (Zeitschrift)
Elektronische Ressource
Englisch
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