硬质聚氨酯泡沫塑料具有优良的保温性能PU

硬质聚氨酯泡沫塑料具有优良的保温性能、力学性能、电学性能、声学性能和耐化学品性能，特别是具有优异的绝热性能, 而且其密度、强度、硬度等均可以随着原料配方的不同而改变，再加上其成型施工十分方便，因此在冰箱冰柜、冷藏运输、建筑绝热、工业储罐及管道绝热、家具制造等领域获得了越来越广泛的应用。

Rigid polyurethane foam plastics is with excellent insulation properties, mechanical properties, electrical properties, acoustic performance and chemical resistance, particularly, it has excellent heat-insulation properties. And its density, intensity, hardness, etc all can be changed with different raw material formulation .furthermore its forming construction is very convenient. So it becomes more and more widely used in the refrigerator freezer, refrigerating transportation, building heat-insulation, industrial storage tanks and pipe

heat-insulation, furniture manufacturing and other fields .

硬质聚氨酯泡沫塑料是指在一定负荷作用下不发生明显变形，当负荷过大时发生变形后不能恢复到原来形状的泡沫塑料。这种泡沫塑料的主要特点是：重量轻，比强度高，导热系数小。

Rigid polyurethane foam plastics doesn’t occur obvious deformation under certain load and it can't restore to its original shape after deformation when the load is too strong. The main characteristic of this kind of foam plastics are: light weight, high specific strength and small coefficient of conduction.

硬质聚氨酯泡沫塑料重要的特性之一是导热系数小，是一种性能优良的有机绝热材料。

One of the most important characteristics of rigid polyurethane foam plastics is its small coefficient of thermal conductivity, so it is a kind of high performance organic heat-insulation material.

多种因素对硬泡的导热系数有所影响，主要与泡沫塑料的化学组成、泡沫的空间结构、闭孔率、发泡剂品种及泡沫密度等有关。

A number of factors will influence the coefficient of thermal conductivity , which is mainly relate to chemical composition of the foam plastic, spatial structure of foam, closed porosity, foaming agent and foam density and so on.

硬质聚氨酯泡沫塑料具有强度高、重量轻、绝热效果好、施工方便等特点，40 多年来在很多领域得到广泛应用，用途大致分为两类。一类作为绝热材料，如冰箱、冷柜、夹心板材及保温管道中的硬质泡沫塑料；另一类为非绝热用的结构材料，如制作家具、运动器材、电器外壳等。此外，还有两种功能兼有的制品。

Rigid polyurethane foam plastics has the characteristics with high strength, light weight, excellent heat-insulation property, convenient to construct and so on. In recently 40 years, it is widely applied in many fields, its application is roughly divided into two categories. On the one side, it is used as heat insulation material, such as refrigerators, freezers, sandwich panels and the rigid foam insulation pipe,

On the other side, it is as non adiabatic structural material, such as furniture, sports equipment, electrical enclosure, etc. In addition, there are some products with both functions .