Regenerated rubber matrix based combined damping plate and manufacturing method

Abstract

The invention discloses a regenerated rubber matrix based combined damping plate and a manufacturing method. The regenerated rubber matrix based combined damping plate comprises a bottom layer and a damping layer, wherein the bottom layer is a steel plate; the damping layer is manufactured from modified regenerated rubber; if only one surface of the modified regenerated rubber is adhered to the steel plate, the steel plate and the regenerated rubber can form a free damping layer structure; if both surfaces of the modified regenerated rubber are adhered to the steel plate, two steel plates and the regenerated rubber can form a constraining damping layer structure; the two steel plates are different in thickness in order to avoid coincident effect within the same frequency range. The regenerated rubber matrix based combined damping plate is simple in structure; the high sound insulation effect of the steel plate is comprehensively utilized and the modified regenerated rubber material is adopted to form a large-damping constraining structural layer for inhibiting the easy-resonating performance of the steel plates, and therefore, the energy of the noise transmitting through the sound insulation plate can be reduced by more than 90%; the regenerated rubber used as the damping material can reduce the material cost of the damping plate and can also greatly reduce the pollution of the waste rubber to the environment.

Description

Technical field [0001] The invention relates to the field of using vibration control to reduce radiated noise and sound insulation, in particular to a composite damping plate based on a regenerated rubber matrix and a manufacturing method. Background technique [0002] Commonly used damping sound insulation panels are basically sound insulation panels used in buildings, and their structure is shown in the attachment image 3 , It is made up of magnesite board (or gypsum board) 5, sound insulation damping felt 6, cement board and other materials combined by gluing. It is not suitable for sound insulation of machinery and equipment. At present, the sound insulation of machinery and equipment mainly uses asphalt-based sound insulation felts of different thicknesses to be pasted on the noise radiation surface by gluing. The sound insulation of this method is not large, and the vibration of the machinery and equipment will make the sound insulation felt sticky. The glue falls off and ...

AI Technical Summary

Problems solved by technology

At present, the sound insulation of machinery and equipment mainly uses asphalt-based sound insulation felts of different thicknesses to be pasted on the noise radiation surface by gluing. The glue falls off, thus the sound insulation fails

Another kind of composite damping board commonly used for sound insulation of machinery and equipment is to paint asbestos paint between two layers of substrates. Since the thickness of asbestos paint is required to be greater than twice the thickness of the board, it is very troublesome to paint asbestos paint matter

In addition, due to the use of viscoelastic materials in this structure, the bonding force is small, and corresponding strengthening measures must be taken when bending, twisting, welding or stamping operations.

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