What Are The Requirements Of Glass Curtain Wall For Glass Selection?

The glass used in the glass curtain wall mainly includes semi-tempered glass, tempered glass, laminated glass, insulating glass, fireproof glass, solar control coated glass, and low-radiation glass.

Choose the glass curtain wall mainly from the following four aspects

1. Energy saving performance

The energy-saving glass must have two energy-saving properties, namely heat preservation, and heat insulation, which are directly related to visible light transmittance and reflectance. Recommended are low-radiation insulating glass and multi-insulating glass, Low-E vacuum glass and combined vacuum glass

2. Safety performance

In order to better use the glass curtain wall, safety glass is used when selecting glass, and tempered glass is mostly used in the past. However, an inevitable characteristic of tempered glass is self-explosion. The self-explosion of tempered glass is very common in curtain wall construction. Tempered glass installed on high-rise curtain walls is dangerous if it self-explodes. Nowadays, the outer layer of semi-tempered glass or ultra-white glass is mostly used.

3. Light pollution performance

In the selection, we mostly use Low-E glass and coated glass, or use hollow glass or vacuum glass combined with ordinary white glass, which can reduce the light reflection pollution of the glass curtain wall to the surrounding environment during use. According to the building fire protection requirements, the glass curtain wall must meet the fire protection requirements, and the external wall requires a fire-resistance rating of not less than 1h. According to the fire protection requirements, ordinary glass cannot meet the requirements. The fireproof glass should use a single piece of cesium potassium glass, which has good fire resistance, and its fire resistance limit is generally 1.0～2.5h. This kind of glass is mostly used in high-rise buildings to achieve a good fire protection effect.

4. Appearance

After meeting the above requirements, if you have more requirements for the architectural effect, you can use ultra-white hollow laminated glass for the whole building, which is also composed of three pieces of glass. The inside is a single piece of glass, the middle is an air layer, and the outside is two pieces. Laminated glass. With many glass layers, ultra-white glass can increase the sense of transparency. Ultra-clear glass is a kind of ultra-transparent soda-lime low-iron float glass. The light transmittance of ultra-clear glass is over 98%, and the iron content is less than 100ppm. This glass is different from ordinary glass, and it is no longer present in front of you. The blue-green, ultra-white glass also possesses all the processing properties of high-quality float glass, has superior physical, mechanical, and optical properties, and can be subjected to various deep processing like other high-quality float glass.

Cities need more buildings that are energy-saving, environmentally friendly, safe, efficient, and beautiful. The choice of glass is very important. It can meet its own needs and choose the corresponding materials for cost control, but the energy-saving and safety requirements of the regulations are the bottom line.