Why Does Glass Wool Have Sound Absorbing Properties

Why does glass wool have sound absorbing properties?

Glass wool is a porous sound-absorbing material.

Because it has an open-pore structure and a rough surface, and has a large number of tiny pores and holes connected to the inside and outside, when the sound wave is incident on the glass wool, the sound wave can enter the material along the pores, causing voids in vibrations of air molecules.

Due to the viscous resistance of the air and the friction between the air molecules and the hole suction wall, that is, the surface of the glass fiber, the sound energy is converted into heat energy and lost, so the use of glass wool has good sound absorption performance.