Wall sound absorption perforated gypsum board is w

2022-07-22
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The sound-absorbing perforated gypsum board on the wall has bright colors and various forms of edge banding, which are wear-resistant, high-temperature resistant, cut resistant, impermeable, easy to clean, moisture-proof, fadeless, delicate touch, affordable, etc.

the sound-absorbing perforated gypsum board on the wall is wear-resistant and high-temperature resistant

1 Excellent sound absorption ability, which can effectively control the reflection of sound waves

2. Professional sound-absorbing non-woven fabric imported from France has good acoustic performance. Fixed on the back of the board can prevent dust falling

3. Wedge edge design provides a smooth decorative effect

4. The accuracy of perforation size is high, and it can be made into square hole design

5. The special high-strength fiber paper faced gypsum board can still maintain high strength after perforation

6. The gypsum board can be made into a curved surface with a small radius of 2m for inner bending and 3M for outer bending

7. Combustion performance: gypsum board and light steel keel are class a non combustible materials after combined installation

after the gypsum board is perforated, the small hole on the gypsum board forms a resonance cavity with the gypsum board itself and the surface of the original building structure. After the sound acts with the perforated gypsum board, the air column at the circular hole produces strong resonance, and the air molecules rub violently with the gypsum board hole wall, thus consuming a large amount of sound energy for sound absorption. This is the basic principle of "Helmholtz resonance" sound absorption of perforated gypsum board. The sound absorption of perforated gypsum board has a certain selectivity to the sound frequency, and the sound absorption frequency characteristic curve shows a peak shape. When the sound frequency is close to the resonance frequency, the sound absorption coefficient is large; When the sound frequency is far away from the resonance frequency, the sound absorption coefficient is small. If the perforated gypsum board is covered with a layer of mulberry paper or thin sound-absorbing felt, the friction resistance of air molecules during resonance will increase, and the sound-absorbing performance of each frequency will be significantly improved. This is the reason why people often cover a layer of mulberry paper or thin sound-absorbing felt behind the perforated gypsum board to increase sound absorption

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