Currently broken bridge aluminum soundproof window the soundproof glass used in can be divided into three types according to different manufacturing processes: hollow glass, vacuum glass, laminated glass. In terms of sound insulation, each glass has its own characteristics.
Double glazing unit. It is composed of two layers of glass. The glass is bonded and sealed with a high-strength and high-air-tightness composite adhesive around, and the air layer of 9mm ~ 32mm in the middle is filled with dry gas, the frame is filled with desiccant to ensure the dryness of air between glass cover. It has good sound insulation effect on high-frequency noise (such as People's Voice, school high-pitch horn sound, etc.), but it has good sound insulation effect on low-frequency traffic noise (such as bus engine noise, train noise, aircraft noise, etc.) the effect is not obvious.
Three-layer hollow glass. Yes triplex glass the structure is the same as that of double glazing unit, but a sealed interlayer is added and a layer of glass is added. The sound insulation effect is higher than that of double glazing unit.
Vacuum glass. Vacuum glass is generally composed of two layers of 4mm thick flat glass, and the space thickness of about 0.28mm is left in the middle of the two layers of glass for vacuum extraction. In terms of sound insulation performance, vacuum glass is better than hollow glass, because the air inside the hollow glass is the same as the outside world and is the medium for sound transmission, while vacuum glass is almost vacuum, however, noise cannot be conducted in vacuum state. However, after vacuum glass is evacuated, two pieces of glass are almost attached together, so when producing vacuum glass, some tiny supports should be lined between the glass, and these supports also become the medium for sound transmission. Therefore, no matter what kind of soundproof glass, it is impossible to completely separate all the noise, which can only be reduced to a certain extent. This kind of soundproof glass is generally used in laboratories, recording studios and other places that do not need to open windows.
Laminated glass. This kind of soundproof glass consists of 3 layers of glass, and there is a super-elastic soundproof film between the glass and the glass. This kind of glass section is similar to the windshield of the car and the structure of the bullet-proof glass of the bank counter, after installation, the indoor effect is about 35 decibels, and the noise is basically inaudible, which is equivalent to the environment of suburbs, nursing homes and high-end hotels. It has good sound insulation effect for high frequency/medium frequency and low frequency noise.
To sum up, it is not recommended that families use vacuum glass as sound insulation glass, and double glazing unit or three-layer hollow glass should be used to make broken bridge aluminum soundproof window, for areas with severe noise, laminated glass is used as broken bridge aluminum soundproof window sound insulation glass.