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[China Glass Network] 1. What should be paid attention to in the construction and selection of sealant for building curtain wall?
The sealing glue for building curtain wall should be selected from good quality products, the structural rubber should be investigated for strength, and the weather resistant rubber should be used to investigate the displacement capacity, and these products must have important engineering application cases. Adhesives should be tested for adhesion, compatibility and contamination before construction. The construction process should be strictly in accordance with the construction process, and the sealant production enterprises can provide technical support before, during and after construction.
2. What glue is used to hang the glass hanging piece, how to use it, what kind of light is used for the shadowless glue?
Hanging glass generally refers to the hanging glass that hangs the full glass glass curtain wall, usually fixed by metal fixtures and hardware. Shadowless glue is a kind of adhesive that must be cured by ultraviolet light. According to different requirements, the shadowless glue source can be divided into high pressure mercury vapor discharge lamp and low pressure mercury vapor discharge lamp.
3. Why do some neutral glues in summer have many bubbles after curing at the joint of concrete and metal window frames, and some will not? Is it a quality issue? Why hasn't there been a similar phenomenon before?
At present, neutral silicone rubber for construction is generally divided into two types: dealcoholization type and deketoxime type. If the use of dealcoholic neutral silicone sealant is in contact with cement concrete, chemical reaction may occur, resulting in the process of solidification of the joint. A lot of bubbles appear, and the use of deketoxime-type neutral silicone sealant can avoid the occurrence of air bubbles.
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