TY JOUR TI RELAXATION PROPERTIES OF COMPOSITE MATERIALS BASED ON MIXTURES OF EPOXY POLYMERS AND THERMOPLASTIC ELASTOMERS KW epoxy polymer KW thermoplastic elastomer KW block copolymer polybutylene terephthalate-polytetramethylene oxide KW relaxation transitions KW creep 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 2020 IS 5 PB Belgorod State Technological University named after V.G. Shukhov