Peculiarities of formation and properties of organic - inorganic systems based on sodium silicate.

Sodium silicate and diisocyanate based organic-inorganic systems were synthesized. Their formation, structure, and properties were studied by means of IR-spectroscopy, DMA, TGA, and transmission optical microscopy. During structuring of organic-inorganic composite obtained the isocyanate groups cyclotrimerization was found to take place simultaneously with urea-urethanes formation reaction. It was shown that the formation of isocyanurate cycles in composite structure resulted in emergence of additional relaxation transition in temperature dependences of viscoelastic functions. [ABSTRACT FROM AUTHOR]