两者的区别主要体现在以下几个方面

The difference between the two is mainly in the following aspects

工艺技术：聚苯板（EPS）生产技术及产品质量成熟，在欧美等国家已经使用近三十年，有成熟的技术规范和技术标准体系，质量稳定。而挤塑保温板（XPS）近几年才开始使用，欧美等国家均未推广使用，其生产工艺、质量控制、配套性能等均未成熟，工艺技术的成熟和稳定性尚待验证。

Technology: polystyrene board (EPS), mature production technology and product quality, in Europe and the United States and other countries have been used in nearly three decades, have mature technical specifications and technical standard system, quality is stable. And extruded insulation board (XPS) to use in recent years, Europe and the United States and other countries did not promote the use, its production technology, equipment, quality control, performance and so on are immature, mature technology and stability is yet to be validated.

保温性能：聚苯板导热系数为0.04，挤塑保温板导热系数为0.03， 相同厚度的板材，挤塑保温板比聚苯板的保温隔热性能高。

Insulation: polystyrene thermal conductivity is 0.04, extruded thermal insulation boards coefficient of thermal conductivity is 0.03, the same thickness of plank, extruded thermal insulation boards is higher than of polystyrene thermal insulation performance.

强度性能：挤塑保温板的抗压强度较高，但是较脆，延伸性不高，易开裂；聚苯板则抗压强度较低，但是柔韧性好，不易开裂。

Strength: the compressive strength of the extruded insulation plate is higher, but it is brittle and not high in extensibility. Polyphenyl plates are less compressive, but they are flexible and not easily cracked.

稳定性：挤塑保温板是瞬间发泡成型，发泡过程在高温高压下突然变为常压，内部孔隙的分子结构难以控制，因此稳定性较差，受温度和湿度影响产生的伸缩变形较大；而聚苯板是常压下自由发泡，反应时间长达几天，因此内部的分子结构稳定，稳定性较好，不易受温度和湿度影响而变形。

Stability: extruded thermal insulation boards are instant foaming molding, foaming process under high temperature and high pressure suddenly turned into normal pressure, the molecular structure of the internal porosity is difficult to control, so the stability is poorer, affected by the temperature and humidity of telescopic deformation; And polystyrene is free foam under the normal pressure, the reaction time for a few days, so the molecular structure of the internal stability, the stability is good, not easily affected by the temperature and humidity and deformation.

透气性：挤塑保温板透气性差，同时吸水率低；聚苯板透气性好，但相对吸水率也高。

Permeability: the permeability of the extruded insulation plate is poor, while the absorption rate is low. The polyphenyl panels are breathable, but they are also relatively water-absorbent.

粘结性能：挤塑保温板的分子结构较紧密，表面光滑，难以粘结；

Bonding properties: the molecular structure of the extruded insulation board is more compact and the surface is smooth and difficult to bond.

而聚苯板则分子结构较疏松，表面粗糙，容易粘结。

In the case of polyphenylene, the molecular structure is loose and the surface is rough and sticky.