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Sound Absorptive Tiles Sound Absorption Characteristics Are Increased With Increasing Frequency Of Sound Absorption Coefficient Gradually

Oct 27, 2017

There are many types of Sound Absorptive Tiles, how to install sound-absorbing effect is also a certain skill, such as wood Sound Absorptive Tiles, the installation method is more common, but compared to the soft package is more complex.

Construction of the application of sound-absorbing material must consider the installation effect. Boulder foam, cement mortar, cement mortar, cement mortar, Brick (water wall), cork board, etc., each of the sound-absorbing material on its thickness, bulk density, the frequency of the sound absorption coefficient and installation requirements are required, should implement the corresponding norms.

Used as the material of sound-absorbing material should be used as far as possible non-flammable, easy to insect mite mold, pollution, low moisture absorption of the material. As the porous material is easy to absorb moisture, the size is prone to deformation, so the installation should pay attention to the expansion problem.

In the building to install sound-absorbing material, should be installed in the most easily accessible sound waves and the number of reflections on the surface, but also consider the distribution of uniformity, do not have to focus on the ceiling and walls. Most of the sound absorption material strength is low, in addition to the installation operation should pay attention to, but also should consider the waterproof, anti-corrosion, moth and other issues. As far as possible the use of high sound absorption coefficient of materials in order to use less material to achieve better results.

Sound-absorbing materials are mounted on the surface of the building. Therefore, in the design and installation should be considered to bring it with the building of the coordination and decorative. When using decorative paint, be careful not to block the pores, so as not to reduce the sound absorption effect.

With the application of sound-absorbing materials in large-scale projects, people's vague understanding of the principle of sound-absorbing, so the sound-absorbing material produced some wrong understanding.

Sound absorption board knowledge: fiber porous sound-absorbing board materials, such as glass wool, rock wool, mineral wool, polyester fiber Sound Absorptive Tiles, sound absorption mechanism is a large number of micro-connected pores within the material, along the pores can penetrate the material Internal, and material friction occurs to the sound energy into heat. The sound absorption characteristics of the porous sound-absorbing material are increased with increasing frequency, which means that the low-frequency absorption is not high-frequency absorption. The necessary conditions for the sound absorption of porous materials are: the material has a large number of gaps, the gap between each other, the pores into the material inside.

With the walls or ceilings exist in the air layer of the perforated plate, even if the material itself sound absorption is poor, this structure also has sound absorption performance, such as perforated gypsum board, wood, metal plate, and even slit sound absorption brick. This type of sound absorption is called Helmholtz resonance sound absorption, sound absorption principle is similar to the thermosacoustic acoustic resonance, the material external space and the internal cavity through a narrow bottleneck connection, sound waves, the resonant frequency,Sound Absorptive Tiles the neck The intense resonance between the air and the internal space consumes sound energy. Helmholtz resonance absorption is characterized by only a large absorption coefficient at the resonant frequency. Film or sheet with the wall or the ceiling can also absorb sound when the cavity, such as wood, metal plate made of ceiling or wall panels, etc., the structure of the sound absorption mechanism is thin plate resonance sound absorption. At the resonant frequency, a large amount of sound energy is absorbed due to the vibration of the thin plate. Most of the thin plate resonance absorption has good sound absorption performance at low frequency.