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The sound absorbing material has little reflection on the incident sound energy, which means that the sound energy can easily enter and penetrate the material; it is conceivable that the material of the material should be porous, loose and gas permeable, which is a typical porous suction. Sound material. Its structure is: the material has a large number of interpenetrating micropores from the surface to the inside, that is, it has a certain gas permeability.
For sound-insulating materials, to weaken the transmitted sound energy and block the sound transmission, it cannot be as porous, loose and breathable as the sound-absorbing material. On the contrary, its material should be heavy and dense, such as steel plates, lead plates, brick walls, etc. Class materials. The specific requirements for the sound insulation material are:
1, dense and non-porous; 2, has a larger weight.
May 19, 2024