Polymer Science Series C

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

Polyurethane adhesives based on carborane-containing compounds



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.


Polyurethane Polymer Science Series Thermal Aging Adhesive Joint Organotin Compound 
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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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