Noticias

When sound waves enter the pores of Aluminum foam composite panel, they cause the air in the pores to vibrate, which in turn causes the metal frames to vibrate.As the metal frames in aluminum foam are connected to each other in a network, the vibration is prevented and converted into heat energy.At the same time, the friction between the air and the hole wall in the process of vibration also converts the vibration kinetic energy into heat energy.These heat through the network of metal frame, and the surrounding air convection heat loss, so that the sound energy attenuation, play the role of sound insulation.


The sound insulation capacity of Aluminum foam composite panel is very strong, which is several times higher than that of plastic foam, glass fiber, honeycomb aluminum and other materials. The maximum sound insulation capacity of polyurethane foam material commonly used is 23db with a thickness of 100mm, while that of aluminum foam material with a thickness of 20mm can be more than 30db.
In order to reduce the impact of hole penetration and crack on sound insulation performance of Aluminum foam composite panel bare plate, splint is generally used in engineering, that is, the two sides of closed-cell aluminum foam bare plate are respectively pasted with 1mm thick aluminum plate or other decorative plate to makeAluminum foam composite panel.
Aluminum foam composite panel produced by chinalco in henan is widely used in road noise barrier, submarine noise reduction, subway tunnel, car muffler, swimming pool noise reduction, light composite armor and so on