Sales Tel: 0316-7093766 18730629993 Liu wool in building use, the surface tends to be attached through a certain sound effect finishes, such as less than 0.5mm of plastic film, metal mesh, window screening, fireproof cloth, glass cloth, etc., the basic You can preserve the original sound-absorbing glass wool board glass wool special aluminum foil with fire, heat, easy to cut and other fine features, is one of the most commonly used building sound-absorbing material. However, due to the surface without decorative glass wool, and there will be floating down the fiber, it must be made of a variety of sound-absorbing components covert use. The most commonly used is the lowest cost structure is perforated gypsum board ceiling infill made of glass wool or perforated plate wall perforation rate of greater than 20%, the basic sound absorption properties can take full advantage of centrifugal glass wool . In order to prevent spilled glass wool fiber, you need to attach a layer of non-woven perforated back plate, mulberry paper acoustically transparent fabric, or use a glass cloth and plastic film wrapping wool. Perforated gypsum board with a similar panel also perforated metal plate (such as aluminum), perforation of wood, fiber cement board perforation, perforation mineral wool board, glass wool board: material has a certain flexibility, can be used in industrial plant equipment and infrastructure between the isolation pads to reduce the vibration and solid sound passing by the building structure. Product use wool carpets, sound-absorbing cotton blanket is an ideal acoustic and thermal insulation materials are widely used in house walls, ship cabin insulation; drop various generator room, pump room; a computer room, a refrigerator thermostat noise; stereo cabinets, audio adjustment. Sound absorption coefficient: glass wool carpets, sound-absorbing cotton blankets sound-absorbing material for use, keep in the back of the surface air layer or pasted decorative materials. In the air layer thickness within the range of 100-150mm, the thicker the layer of air, the higher the sound absorption in the low range of Sales Tel: 0316-7093766 18730629993 Liu, such as air thickened to a 300mm, effective sound absorption rate range is extended to 100Hz . Purpose: The role: sound-absorbing wall, wall insulation, wall insulation, wall insulation. Centrifugal glass wool fibers fluffy staggered inside, there are a large number of tiny pores, is typical of porous sound-absorbing material, has good acoustic properties. Centrifugal glass wool can be made into wall, ceiling, space absorber, etc., can be a lot to absorb sound energy in the room, reducing the reverberation time, reduce indoor noise. Centrifugal glass wool sound absorption characteristics of not only the thickness and density, but also with factors overlay material, structure and so on. In architectural applications taking into account the need to cost, aesthetics, fire, moisture, dust, anti-aging, and many other problems. Centrifugal glass wool sound-absorbing materials are porous, with good acoustic performance. Centrifugal glass wool sound absorption can not due to surface roughness, but because a large number of internal and external connectivity of tiny pores and cavities. When a sound wave is incident on glass wool, acoustic energy into the interior of the material along the pores, causing the air molecules vibrating space. Viscous drag due to air and air molecules and pore wall friction, sound energy into heat energy loss. Centrifugal glass wool for better high-frequency sound absorption properties. The main factors affecting the performance of centrifugal glass wool sound absorption is the thickness, density and air flow resistance and so on. Density is the weight per cubic meter of material. Than the material on both sides of the air pressure and air flow rate per unit thickness of the barrier is air flow. Air flow resistance is the most important factor affecting the performance of centrifugal glass wool sound absorption. Flow resistance is too small, indicating that the material is sparse, easily through the air vibration, acoustic performance degradation; flow resistance is too large, indicating that the material dense, difficult to incoming air vibration, acoustic performance also dropped. For centrifugal glass wool is concerned, there is an optimum flow resistance sound absorption performance. In practical engineering, measurement of air flow resistance is more difficult, but can be roughly estimated by the thickness and density and control. Sales Phone: 0316-7093766 18730629993 Liu 1, with increasing thickness, the low-frequency sound absorption coefficient is significantly increased, but little change in the high frequency (high-frequency absorption is always larger). 2, the same thickness, density increases, the low frequency sound absorption coefficient also increased; but when the density increases to a certain degree, the material becomes dense, flow resistance is greater than the optimum flow resistance, sound absorption coefficient decreased. For thicker than 5cm bulk density centrifugal glass wool 16Kg / m3, and 125Hz low frequency of about 0.2, the high-frequency (> 500Hz) of the absorption coefficient is close to 1. When the thickness continues to increase by 5cm, the low-frequency sound absorption coefficient gradually increased, when the thickness is greater than 1m or more, the absorption coefficient will be close to the low frequency of 125Hz 1. When the thickness of the constant bulk density increases, the low frequency sound absorption coefficient of glass wool will continue to increase, when the density close to 110kg / m3 when maximum sound absorption performance, 50mm thick, the frequency of 125Hz at close to 0.6-0.7. When the bulk density of more than 120kg / m3, but decreased sound absorption performance, because the material becomes dense, high-frequency sound absorption performance is greatly affected when the bulk density of more than 300kg / m3, sound absorption performance decreases a lot. Commonly used in architectural acoustics sound-absorbing glass wool thickness has 2.5cm, 5cm, 10cm, bulk density have 16,24,32,48,80,96,112kg / m3. Usually 5cm thick glass wool 12-48kg / m3 for. Centrifugal glass wool sound absorption performance and installation conditions also have a close relationship. When behind the plate glass wool air layer with the same thickness of the air layer of glass wool board without absorption effect similar Sales Tel: 0316-7093766 18730629993 Liu