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The role of domain structure in the development of thermomechanical and fatigue properties of microcellular polyurethanes

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Abstract

The effect of the isocyanate index, which is the molar ratio NCO:OH, on the development of structural mechanical and fatigue characteristics of microcellular polyurethanes has been studied. The correlation between fatigue and mechanical characteristics of microcellular polyurethanes at an elevated temperature (100°C) has been established. Fatigue lifetime has been found to be proportional to the concentration of heat-resistant ordered domains of hard blocks, which was estimated by the DSC method.

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Authors and Affiliations

  1. Mendeleev University of Chemical Technology, Miusskaya pl. 9, Moscow, 125047, Russia

    Tet Khaing Htun, D. I. Lyamkin & A. N. Shumskaya

  2. Korolev Rocket and Space Corporation Energia, ul. Lenina 4a, Korolev, Moscow oblast, 141070, Russia

    N. S. Vasil’ev

Authors
  1. Tet Khaing Htun
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  2. D. I. Lyamkin
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  3. A. N. Shumskaya
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  4. N. S. Vasil’ev
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Original Russian Text © Text Khaing Htun, D.I. Lyamkin, A.N. Shumskaya, N.S. Vasil’ev, 2007, published in Vysokomolekulyarnye Soedineniya, Ser. A, 2007, Vol. 49, No. 6, pp. 1043–1048.

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Htun, T.K., Lyamkin, D.I., Shumskaya, A.N. et al. The role of domain structure in the development of thermomechanical and fatigue properties of microcellular polyurethanes. Polym. Sci. Ser. A 49, 697–701 (2007). https://doi.org/10.1134/S0965545X07060107

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  • DOI: https://doi.org/10.1134/S0965545X07060107

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