Double-layer cotton fireproof heat-preservation laminboard

The utility model relates to the technical field of fire prevention and heat preservation of buildings. The sandwich panel is provided with a central polyurethane layer, a first rock wool layer and asecond rock wool layer, the first rock wool layer and the second rock wool layer are arranged on the central polyurethane layer and connected with the central polyurethane layer, a first steel plate is arranged on the face, away from the central polyurethane layer, of the first rock wool layer, and a second steel plate is arranged on the face, away from the central polyurethane layer, of the second rock wool layer. The two layers of rock wool and the two layers of steel plates are arranged outside the central polyurethane layer, so that the fireproof problem is solved, the heat preservation problem is also solved, and the problem that the heat preservation and fireproof performance requirements cannot be met at the same time in the prior art is effectively solved. 本实用新型涉及建筑物的防火保温技术领域，尤其是一种双层棉防火保温夹芯板，夹芯板设有中心聚氨酯层和设在