What is the sound insulation performance of hollow glass

Source：www.cnxingfu.net Release date： 2025-01-07

Information summary：Hollow glass has good sound insulation performance, and the reasons and effects are mainly reflected in the following aspects: 1. Structural principle: Hollow glass is a high-performance soundproof and heat-insulating glass made by bonding two or more pieces of glass with an aluminum alloy frame containing a desiccant using high-strength and high airtightness composite adhesive. The middle air la

Hollow glass has good sound insulation performance, and the reasons and effects are mainly reflected in the following aspects:
1. Structural principle: Hollow glass is a high-performance soundproof and heat-insulating glass made by bonding two or more pieces of glass with an aluminum alloy frame containing a desiccant using high-strength and high airtightness composite adhesive. The middle air layer is crucial. When sound propagates through different media, it encounters the soft medium of the air layer, which forces the propagation path to change. The energy of sound waves will reflect, refract, and attenuate, thereby blocking some of the sound transmission.
2. Sound insulation effect: Generally speaking, ordinary insulated glass can reduce traffic noise by about 30 decibels. If it is high-quality and well crafted insulated glass, combined with appropriate air layer thickness, the sound insulation effect will be even better, theoretically reducing noise by up to 45 decibels. For example, in residential areas adjacent to busy roads, before installing insulated glass, the noise of vehicles can be clearly heard indoors. After installation, it is obvious that the sound becomes weak and blurry, and conversations and rest are no longer affected by high-frequency noise interference.
3. Influencing factors:
Air layer thickness: The thicker the air layer, the better the sound insulation effect is usually. The common thickness of the air layer is between 6mm and 20mm. A thicker air layer can cause more reflections and attenuation of sound, consuming more energy. However, an excessively thick air layer can also lead to increased costs and installation difficulties.
Glass material: Different types of glass have different sound insulation characteristics. For example, tempered glass has higher strength compared to ordinary glass and slightly better resistance to low-frequency noise; And laminated glass performs well in terms of impact resistance and blocking mid to low frequency noise. If combined with insulated glass to form laminated insulated glass, the sound insulation performance can be greatly improved.
Sealing quality: If the surrounding sealing is not tight, external air can enter and exit the hollow layer, which not only causes condensation and fogging inside the hollow glass, damaging the insulation performance, but also greatly weakens the sound insulation ability. Therefore, a good sealing process is crucial.
Overall, insulated glass can meet the basic needs of most ordinary residential and office buildings for sound insulation and noise reduction. If in a high noise environment, other sound insulation methods can be used to further enhance the sound insulation effect.

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