Features    :

Acoustic glass wool's sound absorption characteristics are not only related to thickness and capacity, but also to factors such as cover materials and structural structure.In construction applications also need to take into account cost, beauty, fire prevention, moisture, dust, aging resistance and other aspects of the problem.Glass wool plate belongs to porous sound absorption material and has good sound absorption performance.The reason why glass wool can absorb sound is not because of the rough surface.It is because of the large number of small pores and holes that are connected internally and externally.
With the increase in thickness, the sound absorption coefficient of medium and low frequencies increases significantly, but the high frequency changes little (high frequency absorption is always large).
2, the thickness does not change, the volume increases, the low and medium frequency sound absorption coefficient also increases; but when the volume increases to a certain extent, the material becomes dense, the flow resistance is greater than the optimum flow resistance.The sound absorption performance of glass wool is also closely related to the installation conditions.When there is an air layer behind the glass cotton plate, the sound absorption effect is not similar to that of the glass cotton plate without an air layer of the same thickness.In particular, the sound absorption performance of medium and low frequency will be greatly improved than that of the material on the hard bottom surface, and the sound absorption coefficient will increase with the thickness of the air layer.The use of different capacities of glass cotton stacked together to form a gradually increasing capacity form, can obtain a greater sound absorption effect.