TY JOUR TI VARIABILITY OF APPROACHES TO MATHEMATICAL MODELING OF THE THERMAL PROCESSING PROCESSES OF THE PENOTECOLE SHIELD KW polyethylene KW destruction KW melting point KW structure KW molecular weight JO Bulletin of Belgorod State Technological University named after. V. G. Shukhov AU Klyuchnikova, N.V. AU Piskareva, A.O. PY 2017 IS 2 PB Belgorod State Technological University named after V.G. Shukhov