Which soundproof window in Changzhou is good? Is the soundproof window effective? Is it useful to install a soundproof window for car noise?

As a sound insulation material, the sound insulation window follows the principle that the heavier the material (the greater the area density or the mass per unit area), the better the sound insulation effect. However, we ignore that Yongduo soundproof window is a kind of functional window. It is not a single glass soundproof window, but a whole window. The outer frame, glass and sealing parts all need sound insulation. Its overall sound insulation design, whether it is the sound insulation glass, the sound insulation frame or the sealing treatment with the wall, has a good sound insulation effect.

Now there are mainly insulating glass, laminated glass and vacuum glass on the market. Vacuum glass can reduce noise by 30-40 decibels by applying the principle that vacuum cannot transmit sound. If the floor is high, such as more than 20 floors, and there are no trains or large trailers nearby, you can consider choosing insulating glass or laminated glass; If the floor is low, close to the road or viaduct, and there are low-frequency noise sources nearby, then vacuum glass should be considered to completely solve the noise problem.

As far as the performance of sound insulation window is concerned, the more glass layers of sound insulation window, it does not mean that the sound insulation performance is the best. The research shows that some manufacturers in the market use the technology of three-layer glass and two-layer cavity to improve the sound insulation effect of doors and windows, but the sound insulation effect has not been improved obviously after testing. Experts from Tsinghua University Building Physical Environment Testing Center believe that insulating glass should have sufficient mass density and large air insulation layer. If the mass density is constant, the change of air insulation layer will inevitably affect its sound insulation. The addition of the third glass interferes with the air acoustic sound insulation performance of the hollow glass cavity, and the sound insulation performance decreases. It is suggested that this process should not be used in the selection of sound insulation windows for windows and doors in Winoshield, Germany.

In terms of sound insulation technology, sound insulation glass is only an element in the design of sound insulation windows. We don't deny that sound insulation glass plays a great role in noise, but we can consider that the soundproof window can insulate sound, because its area density is very high and its weight is very heavy.

From this point of view, the multi-layer glass soundproof window has no advantage in terms of technology or sound insulation effect, which is why it has not been popularized in the market. At present, double-layer soundproof windows are the mainstream. For ordinary traffic noise, even train noise or plane noise, the sound insulation ability of double-layer sound insulation window is sufficient.