Abstract
A procedure was developed for preparing stable dispersions of graphite nanoplates with the concentration of up to 25 mg mL–1 by two-step ultrasonic treatment of graphite in N-methyl-2-pyrrolidone. A series of elastic films based on poly-2,2′-p-oxydiphenylene-5,5′-bisdibenzimidazole oxide with the filler content of up to 45 wt % were prepared from such dispersions. Introduction of the nanoadditive into the matrix of the heterocyclic polymer results in 47% enhancement of the tensile strength of the materials and in an increase in the temperature of the 10% weight loss by 52–81°C. In addition, the films are characterized by high electrical conductivity reaching 480 S cm–1 for the composite with 45 wt % graphite nanoplates and exhibit tensoresistive properties, which allows using them in various electrotechnical devices and fabric engineering structures.
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Original Russian Text © B.Ch. Kholkhoev, E.N. Gorenskaya, S.A. Bal’zhinov, I.A. Farion, G.N. Batorova, A.V. Nomoev, P.S. Timashev, B.R. Radnaev, R.K. Chailakhyan, V.E. Fedorov, V.F. Burdukovskii, 2016, published in Zhurnal Prikladnoi Khimii, 2016, Vol. 89, No. 5, pp. 647-653.
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Kholkhoev, B.C., Gorenskaya, E.N., Bal’zhinov, S.A. et al. Functional composites based on polybenzimidazole and graphite nanoplates. Russ J Appl Chem 89, 780–786 (2016). https://doi.org/10.1134/S1070427216050153
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DOI: https://doi.org/10.1134/S1070427216050153