TY JOUR TI STUDY OF THERMAL DEGRADATION OF FIRE-RETARDANT INTUMESCENT COMPOSITIONS BY INFRARED SPECTROSCOPY KW fireproofing KW fireproof intumescent coatings KW intumescent coatings KW thermal destruction KW fire-technical expertise KW infrared spectroscopy JO Scientific and analytical journal «Vestnik Saint-Petersburg university of State fire service of EMERCOM of Russia» AU Printseva, M.Y. AU Claptyuk, I.V. AU Teplyakova, T.D. PY 2024 IS 2024 PB Saint-Petersburg University of State Fire Service of Emercom of Russia