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How to choose glass for soundproof windows?


Nowadays, the urbanization of society is developing faster and faster, but people living in cities have always been affected by urban noise pollution. The roar of the construction site, the hustle and bustle of the downtown area, the whistle of vehicles, the noise of neighbors...

And urban noise pollution not only affects people's mood and quality of life, but also may lead to high blood pressure, heart disease, memory loss and other diseases.
90% of the urban noise people hear comes from doors and windows, which also shows how important a good soundproof door and window is. Good effect broken bridge aluminum system doors and windows can sound 60%-80%. The current door and window market is mixed. Many owners who want to install soundproof doors and windows do not know how to choose soundproof doors and windows. First of all, Baydee will lead you to look at the factors that affect the sound insulation of doors and windows.

1. The sound insulation effect of hollow sound insulation glass

Insulating sound insulation glass uses the filling gas to partially absorb the energy of medium and high frequency sound vibration, thereby reducing the sound level of sound waves. Its isolation performance is related to the thickness of the glass, the filling gas in the middle, the number and thickness of the spacer layers.

Such insulating glass has a good sound insulation effect for high-frequency noises, such as speech sounds, high-pitched school horns, etc., but its sound insulation effect for low-frequency noises such as traffic is not ideal, because the insulating glass is in the low-frequency area. Resonates with low frequency noise. Such as train sound, airplane sound, engine sound, etc.

2. The sound insulation effect of vacuum sound insulation glass

Vacuum sound insulation glass uses the principle that sound cannot be transmitted in a vacuum environment for sound insulation. In theory, it can be completely sound insulation (but because in the production process, the manufacturer will fill some tiny substances between the glass as support, which is equivalent to a solid medium and is a sound wave. Passing provides a shortcut, so it is not really soundproof glass).
Therefore, although vacuum glass can also reduce noise, it cannot completely isolate noise. Generally, vacuum glass is used in laboratories, recording studios and other places.

3. The sound insulation effect of laminated glass

The film in the middle of the laminated glass is equivalent to a damping layer, which mainly uses the characteristics of the PVB adhesive layer to absorb medium and low frequency sound waves to suppress the vibration of the glass to achieve the effect of sound insulation. Generally used in high-end hotels, nursing homes and other places. It is very good for high frequency noise and medium and low frequency noise.

However, the sound insulation performance of laminated glass will be affected by temperature. In the cold winter, the laminated layer will lose its elasticity due to low temperature, which will affect the sound insulation effect.

4. Sound insulation effect of laminated insulating glass

Laminated insulating glass has the advantages of both laminated glass and insulating glass. The sound waves of various outdoor noises are gradually attenuated through the air layer and the rubber layer, especially when the noise passes through the rubber layer, the medium and high frequency noise is absorbed, distorted, damped, and attenuated, which can eliminate about 95% of the noise.

I believe everyone has a certain understanding of the sound insulation effect of various glass on the market, but the general recommended order is: laminated insulating glass>laminated glass>insulating glass>vacuum glass.
I believe many people will wonder, why not sort by effect?

In fact, when you actually buy and use, you should not only consider the sound insulation effect, but also the cost performance of doors and windows, as well as the performance of heat insulation and waterproofing.
Although vacuum glass can completely isolate noise in theory, the current vacuum glass on the market has a large number of solid fulcrums, and the sound insulation effect is greatly weakened, but the price is very expensive and the cost performance is very low.
According to the different needs of the owner to choose different glass:
For high-frequency sound insulation (speaking, horn, car whistle...) choose insulating glass;
For low-frequency sound insulation (train sound, airplane sound, engine sound...) choose laminated glass;
If your budget is sufficient and the demand for sound insulation is relatively high, choose laminated insulating glass or double insulating glass;