TY JOUR TI FEATURES COMBUSTION COMPOSITE POLYMER MATERIALS FILLED WITH HOLLOW GLASS SPHERES KW polymer materials KW combustion KW filler KW alumosilicate glass spheres JO Scientific and analytical journal «Vestnik Saint-Petersburg university of State fire service of EMERCOM of Russia» AU Sirotinkin, N.V. AU Ryutkyanen, E.A. AU Belshina, J.N. PY 2013 IS 2013 PB Saint-Petersburg University of State Fire Service of Emercom of Russia