The results of the study into the effects of physical (vacuumizing and ultrasound treatment) and physicochemical (application of nanoadditive) modifications of the epoxy binder on its technological and mechanical characteristics are reported. In the course of the study, the formulation and curing conditions for the epoxy-anhydride binder were optimized, taking into account data on viscosity, pot life, heat resistance, and strength. The combined application of ultrasound and vacuum was shown to improve the strength of the cured binder by 23%. The incorporation of nano-sized silica into the binder composition was found to increase the viscosity within admissible limits for its processing, in which case the bending strength of the binder samples augments by 20-50% subject to the specific surface of the nanomodifier, reaching a maximum value at the content of 0.75%.