Sound insulation board effect and what is relevant
General noise is the practice of two types of materials used together, sealing plate with a high density of the plate, and the middle filled with sound-absorbing cotton, such as 50mm thick gradient of sound-absorbing cotton such a highly efficient sound-absorbing material. You can play a very good sound insulation effect.
To prevent the vibration of the sound transmission: This plate requires a higher density of the unit surface, that is, the higher the density of the unit surface noise better, which is why the thick wall than the thin wall sound insulation better reason. Usually have fiber cement board and other products. Stone also has a good sound insulation, medium and thick steel plate has a good sound insulation effect.
As the name implies, is to reduce the intensity of the sound source, can play this role is usually a porous material, generally common are cotton products. The most effective is the gradient of sound-absorbing cotton, the raw material is made of polyester fiber, but the density is gradient, what it means, that is, side is relatively soft, one side is hard, from soft to hard, soft side of the installation towards the source.
