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Elasticity of a cryo-insulation polymer foam coating in the temperature range 8–293 K

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Abstract

An apparatus is developed for investigating the dynamic deformation properties of cryoinsulation coatings in the temperature range 8–293 K. One type of cryo-insulation material — polyurethane foam — is chosen as the object of investigation. Test measurements on a polyurethane foam “pack” (metal substrate with a polyurethane foam coating) are performed at 0.01 Hz in the temperature range 8–293 K. A jump in the temperature dependence of the dynamic shear modulus (by two orders of magnitude) is observed in the temperature range 54–63 K. This feature is attributed to the solidification of the air present in the pores of the polyurethane foam. Such a transition results in cementation of the polyurethane skeleton of the coating by the nitrogen and oxygen “ice” that is formed.

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Authors and Affiliations

  1. Taras Shevchenko Kiev State University, 252127, Kiev, Ukraine

    L. A. Bulavin, Yu. F. Zabashta, A. Ya. Fridman & A. I. Kostyuk

Authors
  1. L. A. Bulavin
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  2. Yu. F. Zabashta
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  3. A. Ya. Fridman
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  4. A. I. Kostyuk
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Additional information

Zh. Tekh. Fiz. 69, 116–118 (February 1999)

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Bulavin, L.A., Zabashta, Y.F., Fridman, A.Y. et al. Elasticity of a cryo-insulation polymer foam coating in the temperature range 8–293 K. Tech. Phys. 44, 239–241 (1999). https://doi.org/10.1134/1.1259292

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  • DOI: https://doi.org/10.1134/1.1259292

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