Precast gypsum lightened with polyurethane foam from industrial waste, in suspended ceiling plate form, comprises commercial plaster or plaster, shredded polyurethane foam of industrial origin, reinforcing fibers, additives, and water

Abstract

NOVELTY - A precast gypsum lightened with polyurethane foam from industrial waste, in the form of a suspended ceiling plate, comprises commercial plaster or plaster; shredded polyurethane foam of industrial origin, with a particle size of less than or equal to 2 mm; 1 wt.% reinforcing fibers, which improve the mechanical properties of the precast; 0.5 wt.% additives to improve physical characteristics/performance of the product; and water, where plaster:polyurethane foam residue ratio is 1:1.5 by volume. USE - A precast gypsum lightened with polyurethane foam from industrial waste, in the form of a suspended ceiling plate. ADVANTAGE - The use of polyurethane foam from industrial residues in the gypsum or plaster matrix of a gypsum precast in the form of a suspended ceiling plate allows to increase the recycling rates of this residue. In addition, it provides improvements in the physical characteristics of the precast, with weight reductions of up to 25% compared to standard plates and an increase in the insulating capacity of the manufactured material, with the final cost of the material being 12% less than a material of similar benefits already known.