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CN 102391492 A聚氨酯(PU)硬泡可用于制备保温和建筑节能材料,具有绝热性能,但普通聚氨酯硬泡的缺点也很明显,即氧指数不高,容易燃烧,安全系数低。所以,建筑节能领域迫切需要一种高氧指数的、难燃的聚氨酯保温材料。国内对难燃聚氨酯的研究一直在进行中。普通的聚氨酯材料氧指数一般只有21%~26%,甚至更
CN 102391492 A Polyurethane (PU) rigid foam can be used for preparing thermal insulation and building energy-saving materials, and has the adiabatic properties. However, the disadvantages of conventional polyurethane rigid foam are also obvious. Namely, the oxygen index is not high, the combustion is easy, and the safety factor is low. Therefore, the field of building energy saving an urgent need for a high oxygen index, flame retardant polyurethane insulation material. Domestic research on flame retardant polyurethane has been in progress. Ordinary polyurethane material oxygen index generally only 21% to 26%, or even more