挤塑板为主要材料的保温体系，出现了开裂的情况也是比较常见的，严重的也是会整体的脱落，这个是什么原因呢？

虽然阻燃挤塑板具有良好的保温防水性，但由于其强度较高，变形应力大，表面光滑、疏水难以吸收，粘结保温板的胶粘剂与墙体的粘贴附着性差等，肯定就会出现较为严重的质量问题。

阻燃挤塑板

挤塑板的密度大、强度高，由于自身变形及温差变形而产生的变形应力也大，相对于每条板缝来说，相邻两块板自身的应力变化是反向的，对板缝处进行挤或拉，就会造成板缝处开裂、渗水、透寒，时间长了以后，就会造成耐候性附着性下降，使得外保温系统剥离、脱落。

还有一个原因，就是阻燃挤塑板和抗裂砂浆的导热系数相差太大，这样就会更加容易产生裂缝的问题了。

Extrusion plate as the main material of the insulation system, cracking is also relatively common, serious is the whole will fall off, what is the reason? Although the fire-retardant extruded board has good heat preservation and water-proof performance, due to its high strength, large deformation stress, smooth surface, hydrophobic and difficult to absorb, the adhesive that binds the board to the wall has poor adhesion, etc. There will certainly be more serious quality problems. The density and strength of the extruded plate of the fire-retardant extruded plate are high, and the deformation stress produced by the deformation of the plate itself and the temperature difference deformation is also high Squeeze or pull on the plate joint, it will cause the plate joint crack, water seepage, cold, after a long time, it will cause the decline of weather resistance adhesion, make the external insulation system peeling off, off. Another reason is that the thermal conductivity of the fire-retardant extruded board is too different from that of the crack-resistant mortar, which makes it more prone to crack problems.