초록 ▼

This invention relates to a non-intumescent, non-char forming, endothermic, essentially inorganic, flexible, fire-protective sheet material. The flexible sheet is made of a composition comprising: (a) an inorganic fiber, such as fiberglass and alumino-silicate refractory fibers; (b) an organic polym

This invention relates to a non-intumescent, non-char forming, endothermic, essentially inorganic, flexible, fire-protective sheet material. The flexible sheet is made of a composition comprising: (a) an inorganic fiber, such as fiberglass and alumino-silicate refractory fibers; (b) an organic polymer binder, such as an acrylic resin; and (c) an inorganic endothermic filler, such as alumina trihydrate. The weight ratio of organic to inorganic constituents is less than about 0.10, and the weight ratio of inorganic endothermic filler of part (c) to inorganic fiber of part (a) is in the range of about 0.5 to 50. This sheet is a useful fire barrier wrap for conduits and cable trays in building construction, which provides excellent fire protection, and the current capacity derating of cables is significantly less with this new fibrous sheet than it is in the case of known fire barrier sheet materials.

대표청구항 ▼

An endothermic, flexible, fibrous sheet material at least 4 millimeters thick made of a composition comprising: (a) a refractory inorganic fiber; (b) an organic polymer binder; and (c) an inorganic, endothermic filler which undergoes an endothermic reaction between about 100°and 600°C., said endothe

An endothermic, flexible, fibrous sheet material at least 4 millimeters thick made of a composition comprising: (a) a refractory inorganic fiber; (b) an organic polymer binder; and (c) an inorganic, endothermic filler which undergoes an endothermic reaction between about 100°and 600°C., said endothermic flexible fibrous sheet having: a weight ratio of organic to inorganic constituents of less than about 0.10, a density of at least 0.6 g/cc, and a weight ratio of inorganic endothermic filler of part (c) to inorganic fiber of part (a) in the range of about 0.5 to 40.