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Sandwich Panel
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21
2022
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02
What is the bonding strength of metal carved panels?
Author:
Metal carved panels are used in many buildings as they enhance the overall design of the exterior of the building. However, many façade panels suffer from some damage, such as bulging or falling of the siding. The appearance of this phenomenon has a certain relationship with the degree of adhesion of the board. If the adhesion is not enough, it is easy to cause the board to fall off. Phenomenon.
Some carved boards have been used for a long time, and the adhesive layer has fallen off. The reason for this phenomenon is that the bonding area is less than 30%; the sagging occurs during lamination, resulting in local layout voids or glue; the leveling mortar and the main wall are hollow, especially after a long time. Water seepage is prone to continuous hollowing, and the hollowing area expands, resulting in hollowing or partial damage to the insulation layer; the surface of the insulation board is overloaded, and it is easy to directly peel off the insulation layer; Insulation boards damaged by wind pressure, voids, or falling off. At the same time, pay attention to the length of the bonding time.
The correct solution is to train on-site quality inspectors. On the basis of understanding the structure of the insulating layer, it is also necessary to understand the properties of various materials and field test methods. Control the bonding area during construction, do not add too much water to the bonding materials used, and use protective measures such as bonding and rivet reinforcement in areas with large positive and negative wind pressure when performing interface treatment on the site wall foundation, and try to improve it as much as possible. . Test and compare the bonding area and bonding time of the materials, and inspect the manufacturer's laboratory on site.
When preparing materials, metal carved panels should fully consider the bonding strength requirements when using external wall insulation systems. As long as the requirements can be met and produced according to the standard, the bonding strength of the general product is still relatively good.
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