XPS板具有完美的闭孔蜂窝结构，这种结构让XPS板在吸水率、导热系数以及蒸气渗透系数等方面均低于其他类型板状保温材料，因此具有高抗压、轻质、不透气、耐腐蚀、不降解等特点。XPS板在欧美国家是极为普通的保温热材料，特别适用于采用倒置式屋面保温隔热工艺(up-setdown)的屋面保温隔热系统、冷动库、墙体内外的保温隔热、家庭装潢等方面。该产品适用于屋面隔热层无论隔热效果、施工简便性、总造价、使用寿命等都比传统的珍珠岩更具有优势，为新型环保节能材料，是目前建筑装饰行业的首选材料。 XPS/挤塑板的导热系数小于等于0.028w/mk，远远低于其他的保温材料，因此具有高热阻、低线性膨胀率的特点。

The XPS board has a perfect closed cell honeycomb structure. This structure makes the XPS board lower than other types of plate insulation materials in terms of water absorption, thermal conductivity and vapor permeability. Therefore, it has the characteristics of high compression, light weight, air permeability, corrosion resistance and no degradation. XPS board is a very common thermal insulation material in Europe and America. It is especially suitable for roof insulation systems, cold storage tanks, indoor and outdoor thermal insulation, family decoration and other aspects with inverted roof insulation technology (up-setdown). The product is suitable for roof insulation. It has more advantages than traditional perlite, such as heat insulation effect, construction convenience, total cost and service life. It is the new material of environmental protection and energy saving, and is the first choice for building decoration industry. The thermal conductivity of the XPS/ extruded plate is less than 0.028w/mk, far below the other thermal insulation materials, so it has the characteristics of high thermal resistance and low linear expansibility.