| 摘要 |
A construction board comprising a cellular body including at least one planar surface, where the cellular body includes a polyurethane or polyisocyanurate cellular structure, where the cellular structure has a density greater than about 2.5 pounds per cubic foot, an ISO index of at least 270, and where the cellular body includes at least 5.0% by weight flame retardant based on the weight of the cellular body. |
