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Use of Metal Oxide–Silica Fillers NiО‒SiO2 and СuO‒SiO2 as Active Modifiers of Polyurethane Composites

  • Macromolecular Compounds and Polymeric Materials
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Abstract

The possibility of using metal oxide–silica fillers as active modifiers of polyurethanes synthesized from hydroxyl-containing oligomers and a polyfunctional isocyanate was examined. The curing kinetics of the polyurethane compound in the presence of filler was studied by rotation viscometry. The dependence of the curing rate constants on the specific surface area of the fillers was revealed. The Raman spectra show that introduction of metal oxide–silica fillers in the course of polyurethane synthesis favors the formation of new chemical bonds, including hydrogen bonds, which influences the polymer structure formation. Factors responsible for the enhancement of the strength of the polyurethanes synthesized in the presence of metal oxide–silica fillers were analyzed. Introduction of 0.5 wt % filler favors preparation of the material with improved rheological and physicomechanical characteristics compared to the unmodified polyurethane.

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ACKNOWLEDGMENTS

The study was performed using the equipment of the Center of Shared Use for Studying Materials and Substances at the Perm Federal Research Center, Ural Branch, Russian Academy of Sciences. The authors are grateful to Cand. Sci. (Phys.-Math.) V.I. Karmanov for recording the IR and Raman spectra.

Funding

The study was funded by the state budget within the framework of the government assignment for the Institute of Technical Chemistry, Ural Branch, Russian Academy of Sciences (State Registry no. АААА-А18-118022290056-8).

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Authors and Affiliations

  1. Institute of Technical Chemistry, Branch of Perm Federal Research Center, Ural Branch, 614990, Russian Academy of Sciences, Russia

    E. R. Volkova, N. B. Kondrashova, M. V. Perepada & A. I. Slobodinyuk

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  1. E. R. Volkova
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  2. N. B. Kondrashova
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  3. M. V. Perepada
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  4. A. I. Slobodinyuk
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Correspondence to E. R. Volkova.

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Additional information

Translated from Zhurnal Prikladnoi Khimii, No. 3, pp. 316–323, January, 2021 https://doi.org/10.31857/S0044461821030051

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Volkova, E.R., Kondrashova, N.B., Perepada, M.V. et al. Use of Metal Oxide–Silica Fillers NiО‒SiO2 and СuO‒SiO2 as Active Modifiers of Polyurethane Composites. Russ J Appl Chem 94, 303–309 (2021). https://doi.org/10.1134/S1070427221030058

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