Frequency-adjustable sound absorption and insulation light composite board and manufacturing method

A lightweight composite board, sound absorption and insulation technology, applied in the field of vibration reduction and noise reduction, can solve problems affecting the effect of sound absorption and insulation, achieve the effects of suppressing resonance and matching effects, and facilitating processing and transportation

Pending Publication Date: 2022-02-01
JIANGSU UNIV OF SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Thus affecting the sound absorption effect

Method used

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  • Frequency-adjustable sound absorption and insulation light composite board and manufacturing method
  • Frequency-adjustable sound absorption and insulation light composite board and manufacturing method
  • Frequency-adjustable sound absorption and insulation light composite board and manufacturing method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0038] as attached figure 1 , figure 2 and image 3 As shown, a sound-absorbing and insulating lightweight composite panel with adjustable frequency is composed of a perforated plate 1, a sound-absorbing layer 2, a damping layer 3, a middle thin plate 4, a sound-insulating layer 5 and a sound-insulating plate 6 which are closely attached in sequence. The perforated plate 1 is made of a perforated aluminum plate into an open box-shaped body with a frame. In the box-shaped body, the sound-absorbing layer 2, the damping layer 3, the middle thin plate 4, and the sound-insulating layer 5 are successively placed, wherein the damping layer 3 The center of the circle is ( figure 2 ) or square ( image 3 ), and the circle or square is arranged with 3 rings or square rings at equal intervals outward and bonded to the surface of the middle thin plate 4 . The frame of the perforated plate 1 and the sound insulation plate 6 are riveted with rivets.

[0039] The perforated plate 1 is...

Embodiment 2

[0044] as attached figure 1 and Figure 4As shown, a sound-absorbing and insulating lightweight composite panel with adjustable frequency is composed of a perforated plate 1, a sound-absorbing layer 2, a damping layer 3, a middle thin plate 4, a sound-insulating layer 5 and a sound-insulating plate 6 which are closely attached in sequence. The perforated plate 1 is made of a perforated aluminum plate into an open box-shaped body with a frame, and the sound-absorbing layer 2, the damping layer 3, the middle thin plate 4, and the sound-insulating layer 5 are placed close to each other in the box-shaped body, wherein the damping layer 3 The arrangement of rectangular damping strips arranged at equal intervals is bonded to the surface of the middle thin plate 4 . The frame of the perforated plate 1 and the sound insulation plate 6 are riveted with rivets.

[0045] The perforated plate 1 is a perforated aluminum plate of 1060mm*1060mm, wherein the plane size is 1000mm*1000mm, the...

Embodiment 3

[0050] as attached figure 1 and Figure 5 As shown, a sound-absorbing and insulating lightweight composite panel with adjustable frequency is composed of a perforated plate 1, a sound-absorbing layer 2, a damping layer 3, a middle thin plate 4, a sound-insulating layer 5 and a sound-insulating plate 6 which are closely attached in sequence. The perforated plate 1 is made of a perforated aluminum plate into an open box-shaped body with a frame, and the sound-absorbing layer 2, the damping layer 3, the middle thin plate 4, and the sound-insulating layer 5 are placed close to each other in the box-shaped body, wherein the damping layer 3 With the middle thin plate as the base body, the laying rate is 50%, and 9 square blocks arranged equidistantly are bonded to the surface of the middle thin plate 4 . The frame of the perforated plate 1 and the sound insulation plate 6 are riveted with rivets.

[0051] The perforated plate 1 is a perforated aluminum plate of 1060mm*1060mm, wher...

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Abstract

The invention discloses a frequency-adjustable sound absorption and insulation light composite board which comprises a perforated board, the perforated board is an open box-shaped body provided with a frame, a sound absorption layer, the damping layers, a middle thin board, a sound insulation layer and a sound insulation board are sequentially arranged in the box body from bottom to top in a tightly attached mode, the sound insulation board is fixedly connected with the frame of the perforated board, the damping layers are bonded to the plate face, opposite to the sound insulation layer, of the middle thin plate in a periodic arrangement mode. The sound absorption and insulation light composite board is simple in structure, diversified in form and convenient to manufacture, particularly, the periodic damping structure greatly reduces the surface density and cost of the sound absorption and insulation light composite board compared with a traditional laying full-damping structure, and the resonance and coincidence effect of components are restrained through laying of periodic damping. The periodic arrangement mode of the damping layers realizes sound insulation of noise sources with different frequencies.

Description

technical field [0001] The invention relates to a frequency-adjustable sound-absorbing and insulating lightweight composite board, in particular to a sound-absorbing and insulating multi-layer composite structural member for isolating airborne sound containing periodically arranged damping structures, which belongs to the technical field of vibration reduction and noise reduction . Background technique [0002] The noise generated by mechanical equipment will affect people's work efficiency, quality of life and even health. Therefore, it is of great significance to carry out research on reducing equipment noise. Installing sound insulation enclosures for mechanical equipment is one of the most common ways to block noise transmission. The sound insulation structure of the sound insulation enclosure is usually composed of perforated plates, sound absorption layers and sound insulation layers, and its sound insulation performance is usually around 20-30dB In order to further ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B32B15/20B32B15/18B32B15/14B32B5/02B32B3/08E04C2/30E04B1/86G10K11/168
CPCB32B15/20B32B15/18B32B15/14B32B5/02B32B3/08E04C2/30E04B1/86G10K11/168B32B2262/108B32B2262/101B32B2307/102B32B2307/56
Inventor 夏兆旺余勇花叶锦啸吴天歌
Owner JIANGSU UNIV OF SCI & TECH
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