Gypsum composites used in fire resistant building components
First Claim
Patent Images
1. A fire resistant composite material comprising:
- gypsum in an amount sufficient to provide fire resistance, wherein the amount is 60 to 90% by weight;
glass fibers, cellulose fibers, polyvinyl alcohol fibers and polypropylene fibers substantially homogeneously distributed through the composite;
a rheology-modifying agent; and
wherein the fire resistant composite material does not include any cement or flyash.
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Accused Products
Abstract
A composite product includes gypsum in an amount of 70 to 90% by weight, fibers in an amount of 1.5 to 26% by weight substantially homogeneously distributed through the composite, and a rheology-modifying agent in an amount of 0.5 to 6% by weight. The composite is caused or allowed to cure to form a cured composite. The cured composite is a fire resistant component used in a fire-rated door core, a fire-rated door or a fire-rated building panel. The fire resistant component may include a building panel, a door panel, a door core, a door rail, a door stile, a door lock block, a door border, or a door insert.
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Citations
35 Claims
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1. A fire resistant composite material comprising:
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gypsum in an amount sufficient to provide fire resistance, wherein the amount is 60 to 90% by weight; glass fibers, cellulose fibers, polyvinyl alcohol fibers and polypropylene fibers substantially homogeneously distributed through the composite; a rheology-modifying agent; and wherein the fire resistant composite material does not include any cement or flyash. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18)
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19. A fire resistant composite material consisting essentially of:
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gypsum in an amount sufficient to provide fire resistance; glass fibers, cellulose fibers, polyvinyl alcohol fibers and polypropylene fibers substantially homogeneously distributed through the composite; a rheology-modifying agent; and wherein the fire resistant composite material does not include any cement or flyash.
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20. A fire resistant composite material comprising:
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gypsum in an amount sufficient to provide fire resistance, wherein the amount is 60 to 90% by weight; glass fibers, cellulose fibers, polyvinyl alcohol fibers and polypropylene fibers substantially homogeneously distributed through the composite; a rheology-modifying agent comprising hydroxypropoyl methyl celluose (HPMC), methyl hydroxyethyl cellulose (MHEC), hydroxyethyl cellulose (HEC) or carboxymethyl cellulose (CMC); and wherein the fire resistant composite material does not include any cement or flyash. - View Dependent Claims (21, 22, 23, 24, 25, 26, 27, 28, 29, 30, 31, 32, 33, 34)
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35. A fire resistant composite material consisting essentially of:
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gypsum in an amount sufficient to provide fire resistance; glass fibers, cellulose fibers, polyvinyl alcohol fibers and polypropylene fibers substantially homogeneously distributed through the composite; a rheology-modifying agent comprising hydroxypropoyl methyl celluose (HPMC), methyl hydroxyethyl cellulose (MHEC), hydroxyethyl cellulose (HEC) or carboxymethyl cellulose (CMC); and wherein the fire resistant composite material does not include any cement or flyash.
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Specification