Glass curtain wall: refers to the supporting structure system relative to the main structure has a certain displacement capacity, do not share the main structure by the role of the building outer envelope or decorative structure. It can be said that the glass curtain wall is a kind of beautiful and novel architectural wall decoration method, which is a significant feature of the era of modernist high-rise buildings.
With the pace of "China built" in recent years, "China Speed" has brought a qualitative change to modern cities, and this change is still ongoing. However, there are many problems in the application of building door and window curtain wall, such as white spots on glass curtain wall, which also troubles many doors and curtain wall colleagues. Today, we will analyze eight reasons for white spots for you.
Why does the glass curtain wall appear white spot?
1. The reason for glass cracking: there may be a large internal stress caused by the contraction of 12-13% when the laminated adhesive is cured. There are scratches and dark wounds on the glass surface, extrusion sealing, insufficient glue perfusion, not placed horizontally, large area deformation, and the third effect.
2. The glue filling process fog: the reason may be outdoor glue, sunlight, and then pollution glue and system volatilization, advance curing. (Solution: measurement for use, out of use, sealed preservation, non-volatile pollution, pay attention to occlusion when filling glue on curtain wall window).
3. Flake whitening or aerosol reasons: it may be that the glass plate is not dried or not stored as required, and the water molecules on the surface of the glass react with glue and embrittlement whitening.
4. The reason why the glass is easy to break after breaking: the test method for modern curtain wall is inconsistent with the index of rubber layer thickness, and the model of breaking resistance is selected (solution: increase the thickness of the rubber layer, the standard method of testing, and the reinforced or bulletproof type is selected).
5. The glass is not dried after cleaning or the water-containing sundries left after cleaning are not removed.
6. When the glue is filled with water, it is emulsified to form white spots.
7 curing time is too long: the possible reason is weak UV strength, thick curtain wall panel, coated laminated glass and other UV blocking so that curing ability is greatly reduced (solution: with efficient professional UV equipment or prolong the sun insolation time);
8. The adhesive layer is too thin, and the force fission is fog-like (especially the uneven tempered glass).
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Post time: Feb-09-2023
