Why is it said that insulated glass has high safety performance

Source：www.cnxingfu.net Release date： 2025-05-27

Information summary：The high safety performance of insulated glass is mainly reflected in its strong impact resistance, low risk of breakage, good anti-theft performance, and indirect improvement of safety through thermal insulation and sound insulation. The following is a specific analysis: 1、 Structural design enhances impact resistance Hollow glass is made up of two or more layers of glass bonded together w

The high safety performance of insulated glass is mainly reflected in its strong impact resistance, low risk of breakage, good anti-theft performance, and indirect improvement of safety through thermal insulation and sound insulation. The following is a specific analysis:
1、 Structural design enhances impact resistance
Hollow glass is made up of two or more layers of glass bonded together with aluminum spacers and sealant in the middle, forming a cohesive structure. This multi-layer design significantly enhances its impact resistance compared to single-layer glass, for the following reasons:
Multi layer glass sharing impact force: When subjected to external impact, the impact force will be shared by the multi-layer glass, making it less likely to break due to excessive force at a single point. For example, under the same thickness, the impact resistance of double-layer insulating glass is about 1.5 times higher than that of single-layer glass.
The buffering effect of the middle air layer: The air layer between two layers of glass (usually 6-20mm) can absorb some of the impact energy like a "buffer pad", reducing the possibility of direct glass breakage.
2、 Low risk of breakage and safer fragments
Not prone to self explosion or accidental breakage: Hollow glass requires strict homogenization treatment (heating to eliminate internal stress) during production, greatly reducing the probability of self explosion caused by nickel sulfide impurities (the self explosion rate of ordinary glass is about 0.3%, while that of hollow glass can be reduced to below 0.1%).
Broken fragments are not easy to splash: If subjected to extreme impact breakage, the fragments of the insulating glass will adhere together due to the bonding effect of the sealant, making it difficult to fall off or splash and injure people, similar to the effect of "safety glass" (compared to ordinary single-layer glass, it is more likely to form sharp fragments after breakage, which is more dangerous).
3、 Better anti-theft performance
Multilayer structure increases the difficulty of destruction: Thieves find it difficult to damage two layers of glass with a single strike, and the presence of an air layer can cause changes in the sound of the strike, which may attract attention.
Can be further strengthened with laminated glass: Some insulated glass layers are made of laminated glass (with a film sandwiched between two layers of glass), which can maintain overall integrity even if the outer glass is shattered, effectively preventing intrusion.
4、 Thermal insulation and sound insulation indirectly enhance safety
Thermal insulation performance reduces fire risk: Hollow glass has a low thermal conductivity coefficient (K value can be as low as 1.0W/(㎡· K)), which can delay heat transfer and reduce the speed of glass rupture due to high temperature in a fire, buying time for escape.
Sound insulation performance enhances residential security: The sound insulation capacity of insulated glass can reach 25-40dB, effectively blocking external noise (such as arguments and lock picking sounds), making it easier for residents to detect abnormal movements and respond in a timely manner.
5、 Security advantages of applicable scenarios
High rise buildings are more reliable: In high-rise residential or office buildings, insulated glass is less likely to break due to wind pressure (such as typhoons) or temperature changes, avoiding the risk of glass falling from heights.
Customized safety for special environments: For example, in earthquake prone areas, the elastic structure of insulated glass can cushion vibrations through slight deformation, reducing the probability of glass breakage.

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