| 摘要 |
It has been discovered that improved poured-in-place sandwich panels may be made which have a planar, rigid, cellular polyisocyanurate or polyurethane foam core, an interior facer on one side of the polyisocyanurate foam core and a metal skin on the other, opposite side of the polyisocyanurate foam core. Adhesion of the metal skin to the polyisocyanurate or polyurethane foam core is improved through the use of a primer layer, such as a polyurea or a polyepoxide. Preferably, glass fibers are provided in the polyisocyanurate or polyurethane foam core as reinforcement and as fire retardant.
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