Soundproofing of fiberglass boards
Soundproofing of fiberglass boards
Glass fiber has excellent sound insulation and sound absorption properties.
The below table listed the sound absorption system of glass fiber and other materials under different audio frequencies number.
It can be seen from the table that the sound absorption coefficient of glass fiber is relatively large. with frequency increase, the sound absorption coefficient also increases significantly.
The sound absorption coefficient of various materials | ||||
Material | sound absorption data /Hz | |||
256 | 512 | 1025 | 2048 | |
rubber carpet | 0.05 | 0.08 | 0.08 | 0.08 |
asbestos of 20mm | 0.65 | 0.60 | 0.60 | ---- |
Superfine cotton board of 30mm | 0.40 | 0.52 | 0.67 | 0.68 |
fiberglass board | ||||
thickness of 15mm | 0.40 | 0.50 | 0.50 | 0.60 |
thickness of 60mm | 0.50 | 0.96 | 0.95 | 0.99 |
soundproof tile | 0.47 | 0.68 | 0.83 | 0.92 |
 |  |  |
The sound absorption coefficient of various glass cloths varies according to the fabric structure, texture, quality, and thickness of square meters.
The sound absorption coefficient of the directional sound flow at an angle of 90°C is 60%~95%. When the frequency is 2500Hz, the sound absorption coefficient is 78%~95%.
Because glass fiber has a large sound absorption coefficient, its products can be used in various acoustic equipment.
