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（1）聚氨酯的导热系数比较低当硬质的聚氨酯的密度在每立方米35-40kg的时候，聚氨酯的导热系数仅仅只有0.018-0.024/（m.k），这是在目前已经研发的保温材料之中导热系数的，只有EPS的一半之多。不仅如此，聚氨酯防水、抗潮湿的性能也很好，聚氨酯属于憎水性材料，它的闭孔率为90%以上，因此，聚氨酯不会因为吸水而导致导热系数增加，而墙面也不会渗水；
(1) The thermal conductivity of polyurethane is relatively low. When the density of rigid polyurethane is 35-40kg per cubic meter, the thermal conductivity of polyurethane is only 0.018-0.024/ (m.k), which is only half of the thermal conductivity of EPS among the thermal insulation materials that have been developed at present. In addition, polyurethane has good waterproof and moisture resistance. Polyurethane is a hydrophobic material with a closed cell rate of more than 90%. Therefore, polyurethane will not increase the thermal conductivity due to water absorption, and the wall will not seep water;
（2）聚氨酯是一种自熄性材料，在添加阻燃剂之后难以燃烧。聚氨酯只有在高温情况下才会分解，它的软化点高于250摄氏度；
(2) Polyurethane is a self extinguishing material, which is difficult to burn after adding flame retardant. Polyurethane will decompose only at high temperature, and its softening point is higher than 250 ℃;
（3）聚氨酯在燃烧的时候会产生碳，堆积在它的泡沫表面，有助于隔离氧气和底层的泡沫，防止火势蔓延，不仅如此，聚氨酯在高温的情况下也不会产生有害气体，对人体无害；
(3) polyurethane will produce carbon when it burns. It will accumulate on the surface of its foam, help isolate oxygen and foam at the bottom and prevent the spread of fire. Besides, polyurethane will not produce harmful gas and harmless to human body under high temperature.
（4）因为聚氨酯的防火性能，可以减少墙体的厚度，因而增加室内的可利用面积；
(4) Because of the fire resistance of polyurethane, the thickness of the wall can be reduced, so the indoor usable area can be increased;
（5）聚氨酯的孔隙率和结构都比较稳定，不易开裂，安全性强，使用寿命也高于其他的保温材料，综合性价比比较高。
(5) The porosity and structure of polyurethane are relatively stable, not easy to crack, strong safety, service life is also higher than other thermal insulation materials, and the comprehensive cost performance is relatively high.
