Heavy soundproof material, producing method thereof and baffles using the same
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A sound insulation board and sound insulation material technology, which is applied in the field of sound barriers such as sound insulation boards and composite heavy sound insulation materials, can solve the problems of uneconomical, unsatisfactory sound insulation effect, and high cost of sound insulation materials to protect the ecological environment , Significant environmental and social benefits
Inactive Publication Date: 2009-05-06
北京开云科技有限公司
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However, the sound absorption of the glass fiber layer is acceptable but the sound insulation effect is not ideal (CN1660
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Embodiment 1
[0040] Example 1 Component formulation of lead-zinc tailings heavy sound insulation material
[0056] Lead-zinc tailings medium particle 2mm (particle size) 25wt.%
[0057] Lead-zinc tailings fine particles 1mm (particle size) 25wt.%
[0058] Hard asphalt 10wt.%
[0059] Soft asphalt 10wt.%
[0060] The loss factor (%) of the final product of this formulation is 25-50%.
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Average sound insulation
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Abstract
The invention provides a heavy acoustic material with lead-zinc tailings, which contains lead-zinc tailings coarse grains the grain size of which is between 4 and 6 millimeters, lead-zinc tailing medium grains the grain size of which is between 2 and 3 millimeters, lead-zinc tailing fine grains the grain size of which is smaller than 1 millimeter, hard asphalt, and soft asphalt. The invention also provides a method for producing the heavy acoustic material with the lead-zinc tailings and an acoustic board using the acoustic material. The materials of the invention belong to heavy materials, and the densities of formed acoustic barriers are more than 200 kilograms per square meter to have good effect on sound insulation. At the same time, the asphalt is viscoelastic materials and has good damping performance, and the heavy acoustic materials prepared from the lead-zinc tailings which are used as main aggregates have good acoustic performance, are moisture-proof and cheap, and are convenient for construction. If the heavy acoustic material is measured in terms of the internal damping of an asphalt layer, the loss factor (percent) thereof can reach between 20 and 40 percent. At the same time, a porous sound-absorbing material synthesized from the lead-zinc tailings obtained through frothing treatment can be more widely used in sound insulation for various buildings.
Description
technical field [0001] The invention belongs to the field of sound-insulating materials, and in particular relates to a composite heavy sound-insulating material of lead-zinc tailings made from lead-zinc tailings resources and various sound barriers such as sound-insulating panels containing the material. Background technique [0002] At present, most of the sound barriers used for high-speed railways at home and abroad adopt a structure with metal plates on both sides and sound-absorbing materials in the middle. Usually the panel of the sound insulation wall is made of aluminum plate, and the back plate is made of color steel or zinc steel plate in most cases. The intermediate sound-absorbing material filled therein is usually a sound-absorbing board, and its base material is mostly glass wool or glass fiber, for example, refer to Chinese patents CN2546537Y, CN2345606Y. As sound-absorbing materials, porous types are generally used, mostly fiber materials, granular material...
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