CN212896911U - Clean moisture-proof sound absorption structure - Google Patents
Clean moisture-proof sound absorption structure Download PDFInfo
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- CN212896911U CN212896911U CN202021502296.4U CN202021502296U CN212896911U CN 212896911 U CN212896911 U CN 212896911U CN 202021502296 U CN202021502296 U CN 202021502296U CN 212896911 U CN212896911 U CN 212896911U
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Abstract
The utility model discloses a clean moisture-proof type sound absorbing structure. The clean moisture-proof sound absorption structure comprises a dissipative porous sound absorption material and a high polymer film; a polymer film is laid on the surface of the dissipative porous sound absorption material; the thickness of the polymer film is 0.01 mm-0.15 mm; the polymer film is a polyethylene film, a polyester film or a polyvinyl fluoride film; the dissipative porous sound absorption material is glass fiber cotton, rock wool, polyester fiber cotton or a melamine foam board. Specifically, the polymer film can be laid on the surface of the dissipative porous sound-absorbing material by adopting a heat sealing process (the surface flatness is higher) or a direct manual wrapping mode. When the indoor air cleanliness requirement is high, air humidity is big, there is the peculiar smell, the utility model discloses clean moisture-proof type sound absorbing structure can effectively solve above-mentioned problem when satisfying the acoustic performance requirement.
Description
Technical Field
The utility model relates to a clean moisture-proof type sound absorbing structure belongs to noise control, architectural acoustics technical field.
Background
The sound absorption structure based on the dissipative porous sound absorption material is often applied to noise control of industrial plants and sound quality design of halls, and indoor reverberation time can be effectively shortened and adjusted, echo is eliminated, and indoor noise level is reduced by applying on the surface of a room or hanging in the space. The dissipative porous sound absorption material has the advantages that other types of sound absorption materials or structures do not have, and is wide in sound absorption frequency band, stable in sound absorption performance, wide in material obtaining range and relatively simple in processing and manufacturing process, so that the dissipative porous sound absorption material is widely applied.
However, with the continuous expansion of the application field, the dissipative porous sound-absorbing material also meets a plurality of application bottlenecks. Since this type of sound absorbing material is usually a fibrous or foam type material, there are risks of fiber shedding, foam pulverization, etc., and it is not suitable for use in places with high cleanliness requirements (such as labor-intensive production plants, food processing plants, etc.). Meanwhile, due to the porosity of the material, when the material is applied to a space with high humidity and peculiar smell, the material is not beneficial to timely release of water vapor and peculiar smell, and the problems of mildew, peculiar smell, reduction of sound absorption performance and the like can occur for a long time.
Based on the above problems, it is desirable to provide a clean and moisture-proof sound absorption structure, which can effectively prevent the problems of fiber falling, foam pulverization, mildew, odor adsorption, etc. without affecting the sound absorption performance of the material.
SUMMERY OF THE UTILITY MODEL
The utility model aims at providing a clean damp-proof type sound absorption structure, this structure effectively prevents that the fibre from droing, foam pulverization, going mildy, adsorbing peculiar smell scheduling problem when not influencing material sound absorption performance.
The utility model provides a clean moisture-proof sound absorption structure, which comprises a dissipative porous sound absorption material and a high polymer film; and the polymer film is laid on the surface of the dissipative porous sound absorption material.
The thickness of the polymer film is preferably 0.01 to 0.15mm, more preferably 0.01 to 0.08mm, and still more preferably 0.01 to 0.025 mm.
When the high polymer film with the thickness is adopted, the fiber falling, the foam pulverization, the mildew, the peculiar smell adsorption and the like can be effectively prevented, and the acoustic performance of the sound absorption material is not influenced.
In the present invention, the polymer film may be a polyethylene film (PE film), a polyester film (PET film) or a polyvinyl fluoride film (PVF film).
The utility model discloses in, the porous sound absorbing material of dissipation type can be glass fiber cotton, rock wool, polyester fiber cotton or melamine cystosepiment.
The utility model aims at providing a novel sound absorbing structure, it is based on the porous sound absorbing material of dissipation type, through laying the polymer film material at the material surface, can not change the porous sound absorbing material sound absorption performance simultaneously, realizes reducing the purpose of indoor noise reverberation. Can be effectively applied to a closed space with high requirement on indoor air cleanliness and high humidity.
Specifically, the polymer film can be laid on the surface of the dissipative porous sound-absorbing material by adopting a heat sealing process (the surface flatness is higher) or a direct manual wrapping mode.
When the indoor air cleanliness requirement is high, air humidity is big, there is the peculiar smell, the utility model discloses clean moisture-proof type sound absorbing structure can effectively solve above-mentioned problem when satisfying the acoustic performance requirement.
Drawings
Fig. 1 is a schematic structural view of the clean moisture-proof sound absorption structure of the present invention.
Fig. 2 shows the sound absorption performance of the clean moisture-proof sound absorption structure (melamine foam board and PET film).
The respective symbols in the figure are as follows:
1 dissipation type porous sound absorption material and 2 high polymer film.
Detailed Description
The present invention will be further described with reference to the accompanying drawings, but the present invention is not limited to the following embodiments.
As shown in fig. 1, it is a cross-sectional view of the clean moisture-proof sound absorption structure of the present invention, which comprises a dissipative porous sound absorption material 1 and a polymer film 2. Wherein, the surface of the dissipative porous sound absorption material 1 is laid with a polymer film 2, and the thickness of the polymer film 2 is 0.01 mm-0.15 mm. The polymer film 2 may be a polyethylene film (PE film), a polyester film (PET film), or a polyvinyl fluoride film (PVF film); the dissipative porous sound absorber 1 can be glass fiber cotton, rock wool, polyester fiber cotton or melamine foam board.
In order to effectively prevent fiber shedding, foam pulverization, mold formation, and odor adsorption without affecting the acoustic performance of the sound absorbing material, the thickness of the polymer film 2 is preferably 0.01mm to 0.08mm, and more preferably 0.01mm to 0.025 mm.
The utility model discloses tested porous sound absorbent of dissipation type 1 and adopted the melamine cystosepiment, sound-absorbing structure's when polymer film 2 adopted the PET membrane acoustic absorptivity and the noise reduction coefficient, as a result table 1 and figure 2 show, wherein, polymer film 2's thickness is 0.025mm and 0.08mm respectively.
TABLE 1 reverberation chamber method sound absorption coefficient of melamine foam sound absorption structure
As can be seen from the structures of table 1 and fig. 2, when the PET film with 0.025mm is coated on the surface of the melamine foam board, the sound absorption performance of the melamine foam board is basically unchanged, and when the PET film with 0.08mm is coated, the sound absorption performance of the melamine foam board is slightly weakened, but the sound absorption performance requirement can be basically met.
The polymer film is laid on the surface of the dissipative porous sound absorption material, so that the problems of fiber falling, foam pulverization, mildew, peculiar smell adsorption and the like can be prevented while the acoustic performance requirement is met, and the dissipative porous sound absorption material can be applied to places with high indoor air cleanliness requirement, high air humidity and peculiar smell.
Claims (6)
1. The utility model provides a clean moisture-proof type sound absorbing structure which characterized in that: comprises a dissipative porous sound-absorbing material and a high-molecular film; and the polymer film is laid on the surface of the dissipative porous sound absorption material.
2. The clean moisture-proof sound absorbing structure according to claim 1, wherein: the thickness of the polymer film is 0.01 mm-0.15 mm.
3. The clean moisture-proof sound absorbing structure according to claim 2, wherein: the thickness of the polymer film is 0.01 mm-0.08 mm.
4. The clean moisture-proof sound absorbing structure according to claim 2, wherein: the thickness of the polymer film is 0.01 mm-0.025 mm.
5. The clean moisture proof sound absorbing structure according to any one of claims 1 to 4, wherein: the polymer film is a polyethylene film, a polyester film or a polyvinyl fluoride film.
6. The clean moisture proof sound absorbing structure according to any one of claims 1 to 4, wherein: the dissipative porous sound absorption material is glass fiber cotton, rock wool, polyester fiber cotton or a melamine foam board.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021502296.4U CN212896911U (en) | 2020-07-27 | 2020-07-27 | Clean moisture-proof sound absorption structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021502296.4U CN212896911U (en) | 2020-07-27 | 2020-07-27 | Clean moisture-proof sound absorption structure |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN212896911U true CN212896911U (en) | 2021-04-06 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202021502296.4U Active CN212896911U (en) | 2020-07-27 | 2020-07-27 | Clean moisture-proof sound absorption structure |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN212896911U (en) |
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2020
- 2020-07-27 CN CN202021502296.4U patent/CN212896911U/en active Active
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