TY JOUR TI PROPERTIES OF COMPOSITIONAL MATERIALS BASED ON THE MIXTURES OF EPOXY POLYMERS AND OLIGOSULPHONES. PART 2. STATIC AND DYNAMIC RELAXATION PROPERTIES KW epoxy resin KW hardener KW oligosulfones KW end carboxyl and phenolic groups KW creep KW stress relaxation KW dynamic shear modulus KW mechanical loss tangent JO Bulletin of Belgorod State Technological University named after. V. G. Shukhov AU Kochergin, Y.S. AU Grigorenko, T.I. AU Zolotareva, V.V. PY 2019 IS 4 PB Belgorod State Technological University named after V.G. Shukhov