TY JOUR TI PROPERTIES OF COMPOSITIONAL MATERIALS BASED ON THE MIXTURES OF EPOXY POLYMERS AND OLIGOSULFONES. PART 3. PHYSICO-MECHANICAL PROPERTIES KW epoxy resin KW curing agent KW modification KW oligosulfone KW terminal carboxyl and phenolic groups KW physico-mechanical properties JO Bulletin of Belgorod State Technological University named after. V. G. Shukhov AU Kochergin, Y.S. AU Zolotareva, V.V. PY 2019 IS 4 PB Belgorod State Technological University named after V.G. Shukhov