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Polymer Science Series C

, Volume 49, Issue 3, pp 251–254 | Cite as

Polyurethane adhesives based on carborane-containing compounds

Article

Abstract

The results are reported of studies of adhesives based on polyurethanes containing carborane groups. It is established by TGA methods that for polyurethane-carborane systems, total mass losses upon heating to 600°C are equal to 20%, whereas for adhesives free of carborane groups, such losses are equal to 80%. It is revealed that the properties of the adhesives studied are substantially affected by carborane isomeric structure. Compositions containing polyestercarboranes with m-carborane provide higher stability of adhesive joints to elevated temperatures. Results of the study of the kinetics of gas evolution are reported and the scheme of the two-stage mechanism of thermal degradation is proposed. Results of IR spectroscopy analysis show that upon the curing of carborane-containing polyurethane composition, isocyanate groups of polyisocyanate first interact with hydroxyl groups of polyestercarborane, which results in the formation of macrodiisocyanates. Subsequent heating to 350°C leads to further curing of compositions that involves carborane, ester, and polyurethane groups.

Keywords

Polyurethane Polymer Science Series Thermal Aging Adhesive Joint Organotin Compound 
These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.

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References

  1. 1.
    Valetskii, P.M. and Petrova, A. P., Klei. Germetiki. Tekhnologii, 2005, no. 3, p. 2.Google Scholar
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    Sidorenko, V. I., Cand. Sci. (Engineering) Dissertation, Moscow: Inst. Of Organoelement Compounds, 1981.Google Scholar
  3. 3.
    Lipatova T. E. and Bakalo, L. A. in Uspekhi khimii poliuretanov (Progress in Chemistry of Polyurethanes), Kiev: Naukova Dumka, 1972, p. 195.Google Scholar

Copyright information

© Pleiades Publishing, Ltd. 2007

Authors and Affiliations

  1. 1.Federal State Unitary Enterprise All-Russia Institute of Aviation MaterialsMoscowRussia

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