Rockwool fiber products form a porous structure connected with superior sound insulation and noise absorption and noise reduction, when the sound waves through the flow resistance due to friction, so that part of the energy absorbed by the fibers, impede the transmission of sound waves . Rock wool board is composed of rock wool fiber material. Rockwool rough surface porous, and the surface of the pores have good permeability, similar to the myriad of capillaries, acoustic waves can cause rock wool fiber vibration, vibration and friction fibers, the sound energy into heat. The sound waves injected into the rock wool board produce reflection in the rock wool board and the wall, and the multiple reflections will improve the sound absorption effect.
Sound absorption is the use of materials in buildings to absorb the sound that comes into contact with the surface of the material and reduce the reflection of sound.
Rock wool board can be used alone for sound-absorbing, can also be attached to the surface of glass cloth or perforated aluminum foil and other decorative materials. Finishing materials should choose the surface of porous materials. To reduce the acoustic reflection on the surface. At 250, 500,
The average of the sound absorption coefficients tested at 1000 and 2000 Hz is the NRC coefficient.
Sound insulation is the material used in buildings to reduce the spread of sound between two rooms of a building or between buildings. Rockwool products have excellent sound-absorbing properties, but his sound insulation performance is relatively poor, and generally together with other plates (such as gypsum board, steel, or mortar layer, etc.) together constitute a soundproof structure, rock wool board in which the damping effect can be Reduce or eliminate the inherent low-frequency coupling between the two walls.