FIELD: construction.
SUBSTANCE: sandwich panels contain insulating layer, which is provided with glued layer of coating on, at least, one side. Coating contains glue resulted from reaction of aqueous solution of alkali silicate with polyisocyanate. Mass ratio between aqueous solution of alkali silicate and polyisocyanate is between 1:2 and 5:1.
EFFECT: low heating effect, increase fire safety class.
15 cl, 8 tbl, 6 ex
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