Introduction to materials
Material characteristics: 100% polyester fiber is hot pressed with high technology and is made of cocoon cotton shape to realize density diversity and ensure ventilation. It is an excellent product in sound absorption and heat insulation materials. The maximum sound absorption coefficient is above 0.9 in the noise range of 125 ~ 4000Hz. According to different needs, the reverberation time can be shortened, the sound impurities can be removed, the sound effect can be improved and the speech clarity can be improved. The product has the characteristics of decoration, heat preservation, flame retardant, environmental protection, light weight, easy processing, stability, impact resistance and easy maintenance. Can not be used as interior decoration, its composition contains glass fiber, dry will be confused in the air, inhalation damage is no less than PM2.5. So it is generally used in engineering noise reduction. Material characteristics
Folding sound absorption performance
The sound absorption characteristics of polyester fiber sound-absorbing board are similar to other porous materials. The sound absorption coefficient increases with the increase of frequency, and the sound absorption coefficient at high frequency is very large. The sound absorption performance of the material can be greatly improved by leaving a cavity at the back of the board and the space sound-absorbing body composed of it. The noise reduction coefficient is about 0.8 ~ 1.10, which makes it an effective sound absorber with wide frequency band.
Physical and mechanical properties of folding
The polyester fiber sound-absorbing board has the characteristics of sound absorption, heat insulation and heat preservation. The material of the board is uniform and solid, full of elasticity, toughness, wear resistance, impact resistance, tear resistance, and is not easy to be scratched, and the board width is large。
