Sound absorption assembly for sound barrier

Abstract

The utility model discloses a sound absorption component for a sound barrier, which is characterized in that the internal material is a fiber sound absorption material, waterproof sound absorption coating is sprayed on the surface of the fiber sound absorption material, the waterproof sound absorption coating is cured into a film, and the surface of the fiber sound absorption material is bonded to form a composite sound absorption material. The sound absorption assembly for the sound barrier is not only good in mechanical property, high in hydrophobicity, strong in weather resistance and medium resistance, but also excellent in sound absorption and noise reduction performance.

Description

Technical Field

[0001] The utility model belongs to the technical field of materials, and particularly relates to a sound absorption component for a sound barrier. Background Art

[0002] The internal sound absorption materials of traditional metal sound barriers are fiber materials such as rock wool and glass wool. At present, most of the fiber sound absorption materials are made by melting basalt materials at high temperature, and then processing them into irregular fibrous shapes by compressed air. After adding special glue, they are added into a special mold for curing and forming. The compressive strength in the thickness direction perpendicular to the fiber direction of such fiber sound absorption materials is low and the performance segregation is serious. The fiber materials will not only pollute the environment, but also be difficult to recycle. After being used for a period of time, collapse will occur, resulting in the problems of reduced or ineffective sound absorption performance. Wrapping a layer of alkali-free hydrophobic glass fiber cloth or polypropylene hydrophobic non-woven fabric on the surface of rock wool is not only time-consuming and laborious, but also cannot essentially change the aging and collapse of rock wool.

[0003] Because coatings have rich colors, good decorative performance, simple production and construction, and have a certain protective effect, a sound absorption component for a sound barrier is designed, which can not only improve the sound absorption and noise reduction performance, but also prevent the sound absorption materials in the sound barrier from aging, getting damp and collapsing, and increase the service life of the sound absorption materials. Summary of the Utility Model

[0004] The utility model provides a sound absorption component for a sound barrier, which improves the mechanical properties of fiber sound absorption materials and solves the defect that the existing fiber materials are prone to aging and collapse, resulting in the failure of sound absorption and insulation performance.

[0005] In order to achieve the above technical purpose, the technical scheme adopted is: a sound absorption component for a sound barrier, the internal material of which is a fiber sound absorption material, and a waterproof sound absorption coating is sprayed on its surface. The waterproof sound absorption coating is cured into a film and adheres to the surface of the fiber material to form a composite sound absorption material.

[0006] Preferably, the fiber sound absorption material is rock wool or glass wool;

[0007] Preferably, the sound absorption coating material is silicone rubber waterproof sound absorption coating;

[0008] Preferably, the sound absorption coating material is polyurethane waterproof sound absorption coating;

[0009] Advantageous Effects: 1. For the sound absorption component for a sound barrier provided by the utility model, the external is silicone rubber waterproof sound absorption coating or polyurethane waterproof sound absorption coating, which not only has high bonding strength, strong tensile strength, strong chemical resistance, high temperature resistance, good weather resistance and good stain resistance, but also has excellent sound absorption and noise reduction performance.

[0010] 2. The sound absorption component for the sound barrier provided by the present utility model increases the hydrophobicity rate of fiber materials, reduces the short-term water absorption of fiber materials, improves the compressive strength of fiber materials, and increases the mechanical properties of fiber materials. Description of the Drawings

[0011] Figure 1 It is a schematic cross-sectional view of the sound absorption component for the sound barrier of the present utility model. Detailed Embodiments

[0012] The following further elaborates the present utility model in conjunction with the drawings and specific embodiments. These embodiments are only used to illustrate the present utility model and not to limit the scope of the present utility model.

[0013] Embodiment 1

[0014] Suspend the rock wool on the paint spraying line, put the prepared silicone rubber waterproof and sound absorption paint into the machine, use a robot to rotate and spray with a spraying thickness of 1 - 3 mm, and then put the sprayed rock wool into the drying oven to accelerate the curing of the paint. After the silicone rubber waterproof and sound absorption paint is completely cured, the sound absorption component for the sound barrier is obtained.

[0015] Embodiment 2

[0016] Suspend the glass wool on the paint spraying line, put the prepared polyurethane waterproof and sound absorption paint into the machine, use a robot to rotate and spray with a spraying thickness of 1 - 3 mm, and then put the sprayed glass wool into the drying oven to accelerate the curing of the paint. After the polyurethane waterproof and sound absorption paint is completely cured, the sound absorption component for the sound barrier is obtained.

[0017] The mechanical property test results of the sound barrier component are shown in Table 1, and the acoustic test results are shown in Table 2.

[0018] Table 1 Mechanical Property Test Results of the Sound Barrier Component

[0019]

[0020] Table 2 Acoustic Property Test Results of the Sound Barrier Component

[0021]

[0022]

[0023] Note: The acoustic performance test shall be carried out in accordance with the standard of Q / CR 760-2020 "Type I Unit Plate of Railway Inserted Metal Sound Barrier". The combustion performance shall be carried out in accordance with the A1 level standard of GB 8624-2012; the mass moisture absorption rate shall be carried out in accordance with the standard of GB / T 5480; the short-term water absorption shall be carried out in accordance with the standard of GB / T 30850; the water repellency rate shall be carried out in accordance with the standard of GB / T 10299; the tensile strength of the vertical surface shall be carried out in accordance with the standard of GB / T 30804; the compressive strength shall be carried out in accordance with the standard of GB / T 13480.

[0024] The above are only the specific implementation manners of the present utility model, but the protection scope of the present utility model is not limited thereto. Any person skilled in the art within the technical scope disclosed by the present utility model can easily think of changes or substitutions, which should all be covered within the protection scope of the present utility model. Therefore, the protection scope of the present utility model shall be subject to the protection scope of the claimed rights.

Claims

1. A sound-absorbing component for a sound barrier, wherein the internal material is a fiber-type sound-absorbing material, a waterproof sound-absorbing coating is sprayed on the surface thereof, the waterproof sound-absorbing coating is cured into a film, and is bonded to the surface of the fiber-type sound-absorbing material to form a composite sound-absorbing material; the fiber-type sound-absorbing material is rock wool or glass wool; the waterproof sound-absorbing coating is a silicone rubber waterproof sound-absorbing coating or a polyurethane waterproof sound-absorbing coating.

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