Abstract
The dependence of the physicomechanical properties of epoxy nanocomposites subjected to heat and humidity aging on the type of covalently functionalized carbon nanotubes and on the uniformity of their distribution in the epoxy matrix was studied. Two types of carbon nanotubes were used: those modified with carboxy and amide groups. The elastic modulus, bending deflection, and ultimate bending strength for the initial epoxy nanocomposites with carbon nanotubes and for those subjected to heat and humidity aging were determined. The epoxy binders modified with carboxylated carbon nanotubes are more resistant to the action of aging factors. The presence of aggregates of carboxylated carbon nanotubes in the epoxy matrix positively influences the preservation of physicomechanical properties of the composite subjected to heat and humidity aging. Microscopic examination revealed structural features of the epoxy nanocomposite and their effect on the resistance of the composite to the heat and humidity aging.
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Original Russian Text © S.V. Kondrashov, Yu.I. Merkulova, P.S. Marakhovskii, T.P. D’yachkova, K.A. Shashkeev, O.V. Popkov, O.V. Startsev, M.V. Molokov, E.V. Kurshev, G.Yu. Yurkov, 2017, published in Zhurnal Prikladnoi Khimii, 2017, Vol. 90, No. 5, pp. 657−665.
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Kondrashov, S.V., Merkulova, Y.I., Marakhovskii, P.S. et al. Degradation of physicomechanical properties of epoxy nanocomposites with carbon nanotubes upon heat and humidity aging. Russ J Appl Chem 90, 788–796 (2017). https://doi.org/10.1134/S1070427217050202
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DOI: https://doi.org/10.1134/S1070427217050202