Thermomechanical properties of compositions based on polysilicates modified with boron cluster anions or SiO2 nanoparticles

Abstract

Sodium liquid glass silicate compositions modified with boron cluster anions [B10Cl10]2− or [B10H10]2− or SiO2 nanoparticles have been studied. It is shown that in the silicate matrix, the presence of the polyhedral anions results in nanoscale supramolecular structures formed due to their interaction with silanol groups of silicates. In the range of 20–600°C, the TMA method is used to study the formation of supramolecular associates, as well as the deformation stability of the modified silicate matrix and the softening temperature of the modified polysilicates formed upon thermal exposure.