Application of laminated glass in glass curtain wall

Application of laminated glass in glass curtain wall

Application of glass curtain wall

China is becoming a big country of glass curtain walls, producing 70 million square meters of glass curtain walls every year, accounting for 75% of the world's output. Existing glass curtain wall 200 million square meters, accounting for 85% of the world. A glass curtain wall regarded as a symbol of the modern metropolis.

Hollow laminated glass In the construction industry, laminated glass is widely used in buildings because of its unique security and permeability to light, as well as the UV blocking function, and at the same time to avoid the aging damage caused by the sunlight of interior decoration. Laminated glass is also widely used in glass curtain wall because of its characteristic of light weight and moderate heat transfer coefficient.

The curtain walls of tall buildings are turning into swords of Damocles hanging over people's heads. They are not only a large area, a large number, but also located in the high altitude, once broken to form "glass rain", under the action of gravity acceleration, is very terrible "air killer". In recent years, negative news about glass curtain wall keeps coming. Stories of glass exploding and falling and injuring people are often in the news. Such news is fraught with concerns about glass walls.

Since August this year, "Shenzhen Architectural Design Code" has been officially implemented. One more city has adopted restrictive policies on the use of glass walls. Therefore, some provinces and cities have introduced policies, according to the types of buildings respectively to make the glass curtain wall "forbidden", "careful use", "should not be set" limits. With the introduction of the new regulations, some building materials companies seize the news hot, believe that glass curtain wall is nearing the end of its life, and have "successfully developed a perfect substitute for glass curtain wall".

The characteristics of glass such as daylighting, heat insulation and beauty can not be replaced by other materials. Glass curtain wall is an irreplaceable building material for high-rise buildings, so it will still be used for a long time. From the perspective of heat preservation, energy saving, material strength, safety, glass is indeed worse than many materials, but human beings have been bonded with glass for more than 5,000 years, why? Because the natural properties of glass, including texture and texture, meet more aesthetic and psychological needs of human beings, which is incomparable to other materials. "So what we have to do is take the glass that's not energy-efficient and make it relatively energy-efficient, and there's no other way to do it, because it's irreplaceable. Glass Z is not energy efficient and has all kinds of disadvantages, but it is necessary, so we need to find ways to make it as energy efficient and safe as possible."

Laminated glass can eliminate the hidden concern of glass curtain wall

From the point of view of these provinces and cities on the glass curtain wall restrictions, its original intention is mainly to consider the safety of residents' health, the glass curtain wall of various worries. The special safety performance of laminated glass and the advantages of energy saving and environmental protection can eliminate these security risks of glass curtain wall.

1. Laminated glass will not cause "glass rain"

Hollow laminated glass is an integrated deep processing glass made from a special intermediate film sandwiched between two or multiple layers of glass. This process plays a crucial role in safety performance. Because the special intermediate film has strong tensile strength, elongation and other physical properties, only from one side is very difficult to cut laminated glass, even if the use of silent glass cutter has no effect. Laminated glass has a strong impact resistance, such as hammers, fire axes, wood chopping knives are helpless it,

Even if the laminated glass is broken, because the intermediate layer and the glass has been firmly adhered to one, still can maintain integrity. Laminated glass even using power tools or gas torch, can not destroy the whole glass, not to mention drop "glass rain".

2. Laminated glass energy saving and environmental protection

Laminated glass also has good energy saving and environmental protection, when the sun directly irradiates a piece of colorless laminated glass, the intermediate film can absorb most of the heat, only a small part of the heat radiation to the indoor, and make indoor and outdoor heat is not easy to conduct, reduce heat consumption, so as to maintain indoor temperature, but also reduce the energy consumption of air conditioning. Laminated glass does not block visible light while isolating ultraviolet light. It is the "green building material" chosen by many construction projects.

It is recommended to use laminated glass for glass curtain walls

According to national regulations, the glass curtain wall must use safety glass, and the so-called safety glass has two kinds: toughened glass and laminated glass. Compared with tempered glass, laminated glass can be called the true meaning of safety glass. Laminated glass is still maintained into sheets by the adhesive film between the glass after breaking and will not fall. However, due to cost considerations, previously the glass curtain wall generally adopts toughened glass. Obviously, from the point of view of ensuring the public safety of the city, the mandatory use of laminated glass for the glass curtain wall is the best policy