Damping vibration-absorbing denoising soft plate

Abstract

The invention discloses a soft damping plate for vibration absorption and noise reduction. The soft damping plate is prepared from the following raw materials in weight portion: 45 to 50 portions of asphalt as a base stock; and 18 to 20 portions of waste rubber powder, 24 to 31 portions of mud powder and 4 to 5 portions of fine sand which are used as fillers; 2 to 3 portions of polypropylene as atemperature resistant additive; and glass fibre cloth as a tire base adopts. The materials are extruded and molded through heating a stirring machine. The soft damping plate for vibration absorption and noise reduction is prepared through adopting raw materials with wide source and low price and new mixture ratio. Through actual measuration, the wasting factor of the soft damping plate reaches over 0.5; noise can be reduced by over 10 decibels; the effect of vibration absorption and noise reduction belongs to upper intermediate degree; and under the condition of equivalent noise reduction, the cost of the soft damping plate is less than one-third of that of a commercial soft damping plate. The soft damping plate can substantially reduce cost for noise reduction and has good environmental,economic and social benefits. The soft damping plate is applied to vibration control of a fan pipeline in a power plant and other large-scale enterprises, reduces the noise of the pipeline and has remarkable comprehensive benefits.

Description

technical field [0001] The invention relates to a vibration-absorbing and noise-reducing soft board for vibration-absorbing and noise-reducing, which belongs to the field of environmental protection. Background technique [0002] Damping soft board (also known as damping vibration-absorbing and noise-reducing soft board), as a vibration-absorbing and noise-reducing material, can be used for: vibration control of thin-walled machines (such as noodle making machines) and sound insulation cover walls to reduce noise; vibration control of fan pipes , reduce pipeline noise; floor vibration control, reduce the noise in the downstairs room. At present, the price of special damping flexible boards available on the market is relatively high, which makes the cost of vibration absorption and noise reduction very high. The cost problem is especially obvious for pipeline vibration and noise reduction. Traditional pipeline noise reduction adopts bandaging method. First, a layer of dampi...

AI Technical Summary

Problems solved by technology

Traditional pipeline noise reduction adopts bandaging method. First, a layer of damping layer (asphalt asbestos slurry) is applied to the pipe wall, and then one or more layers of sound-absorbing material (glass wool felt) are wrapped, and then multi-layer barbed wire is wrapped. Finally, paste the cement in stages (after the first layer is dry, paste the second layer and the third layer); wrapping a pipe (especially the fan pipe of a large enterprise such as a power plant) requires a lot of materials, labor costs, and long working hours; Using the existing commercially available special damping plate, the material cost is very high