초록 ▼

A fire resistant, acoustic and thermally insulative product consists essentially of a silica-containing refractory solid in finely divided or powdered particulate form, present in an amount sufficient to intumesce to a predetermined volume when exposed to a predetermined amount of heat. The product

A fire resistant, acoustic and thermally insulative product consists essentially of a silica-containing refractory solid in finely divided or powdered particulate form, present in an amount sufficient to intumesce to a predetermined volume when exposed to a predetermined amount of heat. The product further consists essentially of an aqueous sodium silicate solution present in an amount sufficient to act as an agent in producing a foaming process whereby the finely divided solid is so bonded as to form a cellular structure. The product produces substantially no toxic fumes or gases upon exposure to excessive heat or fire. A process for producing the product comprises the steps of mixing silica sand and a sodium silicate solution at a predetermined weight ratio of sand to solution; placing the mixture in a mold at a predetermined mold depth; and placing the mold in a furnace at a temperature sufficient to facilitate foaming, and for an amount of time sufficient to increase the volume of the mixture to a predetermined volume, thereby forming a fire resistant product which is a lightweight, porous material comprising millions of small, closed cells.

대표청구항 ▼

[ What is claimed is:] [1.] A product for providing fire resistance and acoustic and thermal insulation, consisting of:a silica-containing refractory solid in finely divided or powdered particulate form, present in an amount sufficient to intumesce to a predetermined volume when exposed to a predete

[ What is claimed is:] [1.] A product for providing fire resistance and acoustic and thermal insulation, consisting of:a silica-containing refractory solid in finely divided or powdered particulate form, present in an amount sufficient to intumesce to a predetermined volume when exposed to a predetermined amount of heat; andan aqueous sodium silicate solution present in an amount sufficient to act as an agent in producing a foaming process whereby the finely divided solid is so bonded as to form a cellular structure, wherein the sodium silicate solution consists essentially of SiO.sub.2, Na.sub.2 O and water, and wherein the weight ratio of SiO.sub.2 to Na.sub.2 O is about 2.40;wherein the product produces substantially no toxic fumes or gases upon exposure to excessive heat or fire. [5.] A process for providing a fire resistant, acoustic and thermally insulative product, comprising the steps of:mixing silica sand and a sodium silicate solution at a predetermined weight ratio of sand to solution;placing the mixture in a mold at a predetermined mold depth; andplacing the mold in a furnace at a temperature sufficient to facilitate foaming, and for an amount of time sufficient to increase the volume of the mixture to a predetermined volume, thereby forming a fire resistant product which is a lightweight, porous material comprising millions of small, closed cells, which product releases virtually no toxic fumes or gases upon exposure to excessive heat or fire.