Polyurethane foam, refrigerator and method of manufacturing of polyurethane foam

Polyurethane foam, to a refrigerator and a method of manufacturing a polyurethane foam including the same. The refrigerator cabinet according to one aspect; Door for opening and closing the cabinet; And a heat insulating material provided on at least one of the cabinet and the door; and includes a heat insulating material, the polyurethane foam-producing polyol system comprising a fiber having a hydroxyl group; And isocyanate; comprises a polyurethane foam consisting of a composition for preparing a polyurethane comprising a.