1. First of all, the sound absorption performance should meet the requirements of use. If it is required to reduce the mid and high frequency noise or reduce the mid and high frequency reverberation time, materials with higher mid and high frequency sound absorption coefficient should be selected. If you want to reduce low-frequency noise or reduce the low-frequency reverberation time, you should choose a material with a higher low-frequency sound absorption coefficient.
2. The sound absorption coefficient is not affected by the environment and time, and the sound absorption performance of the material should be stable and reliable for a long time.
3. Waterproof, moisture-proof, moth-proof, anti-corrosion, anti-mold, anti-bacteria, which is very important for use in humid environment. Such as swimming pools, underground projects and wet areas.
4. Good fire resistance, should have flame retardant, flame retardant or non-combustible properties. Non-combustible materials should be used as far as possible for public places such as theaters and subway projects.
5. The sound-absorbing material must have a certain degree of mechanical strength, so that it is not easy to be damaged, durable, and not easy to age during handling, installation and use.
6. The material has good processability and light weight, which is convenient for processing, installation, maintenance and replacement. For large and thin roof structures such as large-span stadiums, the weight of the sound-absorbing ceiling is a crucial constraint.
7. Sound-absorbing materials and their products will not scatter dust, volatilize toxic odors, radiate harmful substances, and harm human health during construction, installation and use.
8. Sound-absorbing materials are generally installed on the indoor surface. It is an important part of interior design, especially the sound quality design of theaters, multi-function halls, conference rooms, radio, television and movie recording studios, and hearing rooms. It has a decorative effect.