| 摘要 |
The present invention relates to a sound-absorbing material having an excellent sound absorption performance and a manufacturing method thereof. In particular, the sound-absorbing material having an excellent sound absorption performance includes an air layer which can maximize viscosity loss and a dissipation pathway of incident sound energy; ultimately has excellent properties to reduce vibration by sound energy transferred inside a matrix, resulted from an increased rebound elasticity; and has an increased absorption rate. In addition, the sound-absorbing material can adjust the temperature even when the temperature of the outside changes; can prevent deterioration of the sound absorption performance even during the winter when the temperature of the outside is low; has the excellent sound absorption performance which is effective to block noisy sound transmitted to the inside of a vehicle; has a temperature adjusting function so that the sound-absorbing material can be used as an interior material, which can increase energy efficiency and quality of a future electric vehicle that is driven by a battery and has a separate heating system. |
