Glass wool black deadening felt cottons for home cinema
It is a kind of man-made mineral fibre. Using quartz sand, limestone, dolomite and other natural ore as the main raw material, with some soda, borax and other chemical raw materials melt into glass. In the melt state, the use of external standard rejection blown into flocculent fine fiber, fiber and fiber for the interchange between, intertwined with each other, showing many of the small gap. This gap can be seen as a pore. Therefore, the glass wool can be regarded as a porous material, has good thermal insulation, sound absorption performance.
Glass wool is the molten glass fibrosis formation of shaped material, cotton, chemical composition of glass, is a kind of inorganic fiber with good forming, small volume density, thermal conductivity Di, insulation, good sound absorbing performance, corrosion resistance, chemical properties and stability.
It internal fiber fluffy staggered, the existence of a large number of tiny pores, is a typical porous sound absorbing materials, has good sound absorption properties. Sound absorbing cotton can be made into a wall, ceiling, space absorber, can absorb a large amount of sound within the room, reduce the reverberation time, reduce indoor noise.
It characteristics not only with the thickness and density, and the covering material, structure and other factors. In building application still needs while taking into consideration the cost, appearance, fire, moisture, dust, aging etc.
sound insulation board with fire prevention, heat insulation, easy to cut and other excellent properties, is one of the most commonly used materials building absorption.
Architectural acoustics in commonly used sound-absorbing glass wool has a thickness of2.5cm,5cm,10cm, bulk density of 16,24,32,48,80,96,112kg/m3. Usually use 5cm thick,12-48kg/m3 sound insulation board.