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US 2025/0162946 A1Published application
Synergistic mechanism for enhanced fire protection
AssigneeGP Building Products Services LLC
InventorsAllison Nicole Goins, Hamed Mustafa Kayello, Sudhanshu Srivastava, Vincent B. Thomas, Siddartha Thota
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Abstract
Gypsum panels exhibiting improved fire-resistance properties are provided. The gypsum panels comprise a first additive package, having intumescent properties, and a second additive package, exhibiting structural integrity at high temperatures. Methods of making such gypsum panels, and compositions used to prepare such gypsum panels are also provided.
Claims28
A composition comprising:
- stucco;
- a first additive comprising an intumescent material, wherein the intumescent material expands when heated from a first temperature to a second temperature, wherein the second temperature is greater than the first temperature, wherein the first temperature is ≥400° C., and wherein the second temperature is ≤1100° C.;
- and
- a second additive comprising a non-intumescent material, wherein the composition has improved structural stability when exposed to a temperature≥800° C. compared to a control composition containing the stucco and the first additive having an identical stucco:first additive weight ratio but without the second additive.
1 more element
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A gypsum panel comprising:
- calcium sulfate dihydrate;
- a first additive comprising at least one selected from expandable graphite,
- hydrated sodium alkali metal metasilicate, and a sheet silicate;
- and
- a second additive, wherein at least 40 wt. % of the second additive comprises one silica-containing mineral, and wherein from 0.1-5 wt. % of the second additive comprises a ceramic flux agent.
2 more elements
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Dependencies are inferred from the claim text.