FIELD: construction.
SUBSTANCE: sheet has two opposite surfaces, in one of which a fibrous mat is embedded. This fibrous mat contains fibers adhered by a polymeric binder. The length of the fibers exceeds 20 mm, and the diameter exceeds 14 mcm. The polymeric binder is substantially free of formaldehyde.
EFFECT: fire resistance of a gypsum plasterboard sheet without the need to add fireproof additives to the binder, flexural strength.
24 cl, 1 tbl, 6 ex
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