A broadband soundproof honeycomb panel

Abstract

The invention relates to a broad-band noise insulation honeycomb plate. The honeycomb plate is formed by sequentially bonding a first pore plate, a first honeycomb core, an elastic film, a second honeycomb core and a second pore plate, wherein a plurality of first cavities are distributed in the first honeycomb core; a plurality of second cavities in one-to-one correspondence to the first cavities are distributed in the second honeycomb core; first micro through pores communicating with the first cavities are distributed in the first pore plate; second micro through pores communicating with the second cavities are distributed in the second pore plate. The honeycomb plate can meet the light-weight requirement and can also insulate broad-band noises.

Description

technical field [0001] The invention relates to a sound insulation board, in particular to a broadband sound insulation honeycomb board. Background technique [0002] As we all know, noise treatment or construction can start from two aspects: noise source and noise transmission path: reduce noise source or isolate noise from the transmission path. In most cases, the noise source cannot be determined, is not unique, or is difficult to modify, so noise isolation becomes a major means of reducing noise. [0003] In practical engineering, it is generally used to place a plate with sound insulation or sound absorption properties between the noise source and the receiver as a sound insulation barrier to reduce the energy radiated from the noise. For example, in order to reduce the impact of vehicle noise on the highway or viaduct on the noise of the living area, a certain height of sound barriers is set up on both sides of the road; The cabin sound insulation pad is laid on the ...

AI Technical Summary

Problems solved by technology

However, in some products with sound insulation requirements, the application of lightweight materials poses a considerable challenge to the sound insulation performance of the products, especially for products with low-frequency noise sources, the lightweight of materials means the decline of their sound insulation performance

Therefore, under the industrial background of advocating light weight, dealing with low-frequency noise has become a difficult problem, and broadband sound insulation materials that can deal with high and low-frequency noise have not been reported yet.

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