The NRC of Polyester Fiber Panel

Sound absorption refers to the gradual attenuation of sound waves as they propagate in a medium. The sound absorption coefficient of a material refers to the percentage of sound energy that can be absorbed when it is incident on the surface of the material. When it is greater than 20%, it is called sound-absorbing material, and when it is greater than 80%, it is called strong sound-absorbing material.

Sound absorption and noise reduction can achieve up to 10-15dB of noise reduction. Noise reduction = 10lg (A0/A1), the less indoor sound absorption when no sound absorption material is added, the more indoor sound absorption after adding sound absorption material , The better the noise reduction effect. In workshops, workshops, and large open spaces, due to reverberation, the noise will be 10-15dB higher than the same sound source outdoors. By arranging sound-absorbing materials in the room, the reverberation sound can be absorbed to reduce indoor noise.

The wall where the polyester fiber acoustic panel is pasted is obviously no echo. Polyester fiber acoustic panel has similar sound absorption characteristics to other porous materials. The sound absorption coefficient increases with the increase of frequency. The high-frequency sound absorption coefficient is very large. The back cavity and the space sound absorber formed by it can greatly improve the sound absorption performance of the material. The noise reduction coefficient is about 0.8 to 1.1, which makes it a broadband high-efficiency sound absorber. This is why the walls with sound-absorbing panels are so quiet. In addition to high sound absorption coefficient, wide sound absorption frequency and excellent acoustic properties, the sound absorber composed of polyester fiber sound-absorbing panels also has good physical and mechanical properties and indoor decorative properties.

Qdboss acoustics has been producint the acoustic panels for more than ten years. We have done professinal NRC test of the polyester fiber acoustic panel in the labs and have the test report, please contact us for the reports if you want to know the specific NRC of the polyester fiber acoustic panel.