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Compound sound insulation-absorption barrier board

A barrier board and sound-absorbing technology, which is applied in noise-absorbing devices and buildings, can solve the problems that the porosity of sound-absorbing materials cannot meet the requirements of low-frequency noise control, low-frequency noise cannot be effectively controlled, and material pore changes, etc., so as to avoid self-weight Increase, avoid capillarity, long fiber length effect

Active Publication Date: 2011-03-02
CENT INT GROUP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] The technical problem to be solved by the present invention is that the porosity of the existing sound-absorbing materials cannot meet the requirements for controlling low-frequency noise. When the material is applied outdoors, it encounters a humid environment and absorbs moisture, resulting in changes in the pores of the material, and the low-frequency noise cannot be effectively controlled.

Method used

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  • Compound sound insulation-absorption barrier board
  • Compound sound insulation-absorption barrier board
  • Compound sound insulation-absorption barrier board

Examples

Experimental program
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Effect test

Embodiment 1

[0042] Such as figure 1 As shown, a composite sound-absorbing barrier panel includes a front panel 1, a back panel 3 and a core material 2 bonded and fixed between the two panels. The core material 2 is a centrifugal glass wool sound-absorbing material, and the centrifugal The glass wool sound-absorbing material is arranged in strips, and its fiber direction is perpendicular to the front panel 1 and the back panel 3, and the two sides of the composite sound-absorbing barrier board at the junction of the front panel 1 and the back panel 3 are provided with multiple tongues. mouth 4, the multi-tongue tongue and groove 4 on the two sides can be inserted into each other, the front panel is a perforated panel, and micropores with a perforation rate of 20% are distributed on it; the porosity of the core material is 97.44%, The average diameter of the fibers is 5-6 microns, and the fiber length is 150-200 mm; the noise enters the core material through the micropores and is absorbed ...

Embodiment 2

[0059] The structure of the composite sound-absorbing barrier board is the same as in Example 1. Wherein the front panel is distributed with micropores with a perforation rate of 4%; the porosity of the core material is 98%, the average diameter of its fibers is 5-6 microns, and the fiber length is 160-180 mm; The material is a centrifugal glass wool sound-absorbing material containing a water-repellent agent, and the water-repellent agent is 0.3% of the weight of the centrifugal glass wool. The hydrophobicity of the material is 98%. The water-repellent agent is a silicone resin, which is obtained by modifying a phenolic resin with tricarboxypolydimethylsiloxane. For the modification method, see Example 1 described in CN101531893A.

Embodiment 3

[0061] The structure of the composite sound-absorbing barrier board is the same as in Example 1. Wherein the front panel is distributed with micropores with a perforation rate of 30%; the porosity of the core material is 98.4%, the average diameter of its fibers is 5-6 microns, and the fiber length is 160-180 mm; the core material The material is a centrifugal glass wool sound-absorbing material containing a water-repellent agent, and the water-repellent agent is 0.8% of the weight of the centrifugal glass wool. The hydrophobicity of the material is 99.95%. The water-repellent agent is an organosilicon polymer surfactant α, ω-dihydroxypolydimethylsiloxane.

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Abstract

The invention discloses a compound sound insulation-absorption barrier board, comprising a front panel, a rear panel and a core material fixed between the front panel and the rear panel in a bonding manner, wherein, the core material is arranged in a strip shape, and the fiber direction of the core material is vertical to the front panel and the rear panel; multi-tongue rabbets are arranged at the two sides of the compound sound insulation-absorption barrier board at the joint of the front panel and the rear panel and can be spliced mutually; the front panel is a perforating panel; micropores are distributed on the perforating panel, wherein, the perforated rate of the micropores is more than 3% to 30%; the porosity of the core material is 97-98.4%; the average diameter of the fiber is 5-6 micrometers; the fiber length is 150-200 micrometers; and the noise enters into the core material through the micropores and is absorbed along the fiber direction of the core material. The compound sound insulation-absorption barrier board disclosed in the invention has the advantages of absorbing the noise in the environment, simultaneously insulating the noise, and avoiding the influence of the noise to the surrounding environment.

Description

technical field [0001] The invention relates to the fields of noise control and environmental protection, and more specifically relates to a composite sound-absorbing barrier board. Background technique [0002] With the rapid development of transportation, industrial production, and urban construction, especially the construction of a large number of high-speed railways, environmental noise pollution has become increasingly serious and has become a major public hazard that pollutes the human social environment. In order to alleviate the problem of noise pollution, sound-absorbing barriers have become one of the first-choice products for noise control. The speed of high-speed railways has reached 250km / h, and some lines have reached more than 350km / h. First of all, when the high-speed train passes through, it will generate strong wind pressure on the surrounding buildings, so it puts forward high requirements on the structural strength of the sound barrier board; at the sam...

Claims

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Application Information

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IPC IPC(8): E01F8/00
Inventor 刘爱森
Owner CENT INT GROUP
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