Exposed curtain wall is the most traditional form in curtain wall histroy , the most widely used, reliable working performance. Relative to the hidden frame glass curtain wall, they are more likely to meet the requirements of construction technology. Material curtain wall is the material basis for the quality and safety, the materials used in the curtain wall, in summary, there are four main types can largely be material, namely: skeleton material, plate, sealing caulking materials, including:
Skeleton materials mainly aluminum profile is used. Commonly used in curtain wall LD31 alloy hot extrusion profiles, with high-temperature extrusion is a kind of rapid cooling and artificial aging state by anodic oxidation surface treatment profile (i.e., the RCS state), aluminum surface quality should meet the following requirements: profile surface should be clean, there is no crack, peeling, corrosion and bubbles exist.
1. The thickness of oxide film should be in accordance with the above 15 microns.
2. Sheet. Often have a glass, aluminum, stone and other metals, mainly talk about the glass here. Adopted by the curtain wall glass usually include: float glass, glass of hot reflex plated film, endothermic glass, laminated glass, wired glass and insulating glass. One widely used glass and toughened glass of hot reflex plated film, coated glass can be most of the solar absorption and reflection, reduce indoor air conditioning costs, achieve energy saving effect, still can obtain multiple reflection color, can turn around buildings and natural scenery mapping on the color of glass curtain wall, make the whole building was extremely beautiful spectacular. At the same time, the product has the effect that reduce glare, make the working and living environment comfortable.
Compared with other with the thickness of the glass, toughened glass has 3 ~ 5 times higher bending and impact strength; Three times higher for rapid changes in the temperature endurance; Broken after it is sophisticated granule, avoid injury, is safe. And the sound insulation performance of hollow glass and excellent heat insulation performance. So, according to the structure of the different need to choose the type of all kinds of curtain wall glass.
(3) building sealant rubber (weather resistance) and structural sealants (structural adhesives). Weather resistance adhesive and structural adhesive has many performance requirements are similar, but more emphasis on atmospheric change weather resistance adhesive, uv resistance, aging resistance, mainly used for external sealing construction, have higher requirements on weatherability; The structural adhesive is more important mechanical properties such as strength, ductility, bonding performance requirements. Currently use more silicon adit weathering sealant adit and structure of the silicon sealant is American GE company and DowCorning (dow corning) products, and domestic several kinds of products, such as guangzhou baiyun viscose factory production and the new guangzhou exhibition of viscose factory production series glue need to be aware that weather resistance of the structural adhesive once chosen must make contact with the material in advance, such as glass, aluminum, aluminum, foam rods, etc.) the compatibility test report, only report proof rubber compatibility with contact materials can use.
Through the familiar above the main content of the curtain wall materials, material specifications, to ensure the construction quality of construction play a guiding role.
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