%0 Journal Article %T DEPENDENCE OF THE PERFORMANCE COEFFICIENT ON THE AVERAGE HARMONIC DIAMETER OF POLYURETHANE FOAM %A Suleymanova, L.A. %A Kocherzhenko, A.V. %A Ryabchevskiy, I.S. %K polyurethane foam, filler, mathematical modeling, foaming coefficient, mining waste, harmonic diameter %J Bulletin of Belgorod State Technological University named after. V. G. Shukhov %D 2019 %N 4 %P 7 %I Belgorod State Technological University named after V.G. Shukhov