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Thermo-mechanical and adhesion properties of polymers and composites as affected by nature of epoxy isocyanate binders

The differential scanning calorimetry method was used to study kinetics of cyclo-polymerization of epoxy resins with di- and polyisocyanates of different nature. To reduce a temperature interval in which the reaction between epoxy novolac resin and isophoronodiisocyanate progresses, efficient catalysts — the complexes of zinc dichloride with imidazole and tributylphosphate — were proposed. Highly heat-resistant polymers and composites were obtained due to cyclic oxazolidones and isocyanurates contained in their structure. Adhesion capacity of epoxy isocyanate compositions to aluminium and its alloys was studied as well.