FIELD: chemistry.
SUBSTANCE: heat-insulating foamed products with increased stability to solar radiation include foamed polymeric matrix, obtained by foaming and agglomeration of globules/granules of vinylaromatic (co)polymer, inside of which filler is evenly allocated. Filler includes one athermanous material, selected from coke, graphite and soot, and, possibly inorganic additive, active within the range of wave lengths from 100 to 20000 cm-1. Polymeric matrix includes copolymer of styrene and one vinylaromatic comonomer, substituted in ring or in vinyl group, and/or mixture of polystyrene and to 10 wt %, relative to mixture, thermoplastic polymer, compatible with polystyrene and having Tg (temperature of vitrifying) > 100°C.
EFFECT: invention ensures foamed products with excellent stability to solar radiation and good heat-insulating and mechanic properties.
15 cl, 8 ex
