A new high-temperature resist rigid foamed plastic, polyurethane modified polyisocyanurate(PU-PIR),has been made from polyether polyol, MDI, tripolycatalyst DMP-30, foaming agent and foam homogeneoas reagent.

• 以聚醚多元醇、MDI、三聚催化剂DMP - 30、发泡剂、均泡剂等原料 ,制备了聚氨基甲酸酯改性聚异氰脲酸酯 (PU -PIR)硬质泡沫塑料。