| 摘要 |
There is disclosed a panel (10) for use in soundproofing walls, having a base organization in which an aluminum foam board (30b) containing numerous open pores and a noise-insulating metal board are attached to either side of an aluminum honeycomb structure (20b) via adhesive sheets (50). The numerous open pores allow the aluminum foam board (30b) to absorb medium to high-frequency sound waves while many hexagonal cells in the aluminum honeycomb structure (20b) serve as air pockets in which resonance occurs to attenuate low-frequency noise of 500 Hz or less. Thus, with the ability of the noise-insulating metal board (40) to prevent the propagation of sound waves, the panel (10) can effectively absorb and block noise over a wide frequency range. The panel has the advantages of being semi-permanent in life span, highly resistant to corrosion and excellent in surface strength enough to be resistant to impact, generating neither hazardous articles nor dust, and being reusable. |
