CN111186189A - Polyester sound absorption plate for low-frequency noise reduction and polyester sound absorption composite structure - Google Patents
Polyester sound absorption plate for low-frequency noise reduction and polyester sound absorption composite structure Download PDFInfo
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- CN111186189A CN111186189A CN202010074327.9A CN202010074327A CN111186189A CN 111186189 A CN111186189 A CN 111186189A CN 202010074327 A CN202010074327 A CN 202010074327A CN 111186189 A CN111186189 A CN 111186189A
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- 229920000728 polyester Polymers 0.000 title claims abstract description 163
- 238000010521 absorption reaction Methods 0.000 title claims abstract description 77
- 239000002131 composite material Substances 0.000 title claims abstract description 17
- 230000009467 reduction Effects 0.000 title claims abstract description 15
- 239000000835 fiber Substances 0.000 claims abstract description 63
- 239000011094 fiberboard Substances 0.000 claims abstract description 45
- 229920006267 polyester film Polymers 0.000 claims abstract description 25
- 239000000463 material Substances 0.000 claims abstract description 16
- 238000007731 hot pressing Methods 0.000 claims description 21
- 238000000034 method Methods 0.000 claims description 12
- 230000008569 process Effects 0.000 claims description 12
- 238000010438 heat treatment Methods 0.000 claims description 10
- 230000007613 environmental effect Effects 0.000 abstract description 6
- 230000006872 improvement Effects 0.000 abstract description 4
- 239000002657 fibrous material Substances 0.000 abstract description 3
- 230000000638 stimulation Effects 0.000 abstract description 2
- 239000010410 layer Substances 0.000 description 21
- 230000000694 effects Effects 0.000 description 6
- 238000003825 pressing Methods 0.000 description 5
- 239000011358 absorbing material Substances 0.000 description 3
- 239000000853 adhesive Substances 0.000 description 3
- 230000001070 adhesive effect Effects 0.000 description 3
- 230000007547 defect Effects 0.000 description 3
- 238000009434 installation Methods 0.000 description 2
- 239000012528 membrane Substances 0.000 description 2
- 239000000203 mixture Substances 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 231100000956 nontoxicity Toxicity 0.000 description 2
- 238000002360 preparation method Methods 0.000 description 2
- 239000012814 acoustic material Substances 0.000 description 1
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 1
- 229910052782 aluminium Inorganic materials 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 150000001875 compounds Chemical class 0.000 description 1
- 239000012943 hotmelt Substances 0.000 description 1
- 239000011229 interlayer Substances 0.000 description 1
- 230000007794 irritation Effects 0.000 description 1
- 239000002648 laminated material Substances 0.000 description 1
- 238000011031 large-scale manufacturing process Methods 0.000 description 1
- 238000005457 optimization Methods 0.000 description 1
- 230000002035 prolonged effect Effects 0.000 description 1
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B27/00—Layered products comprising a layer of synthetic resin
- B32B27/12—Layered products comprising a layer of synthetic resin next to a fibrous or filamentary layer
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B27/00—Layered products comprising a layer of synthetic resin
- B32B27/36—Layered products comprising a layer of synthetic resin comprising polyesters
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B5/00—Layered products characterised by the non- homogeneity or physical structure, i.e. comprising a fibrous, filamentary, particulate or foam layer; Layered products characterised by having a layer differing constitutionally or physically in different parts
- B32B5/02—Layered products characterised by the non- homogeneity or physical structure, i.e. comprising a fibrous, filamentary, particulate or foam layer; Layered products characterised by having a layer differing constitutionally or physically in different parts characterised by structural features of a fibrous or filamentary layer
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B5/00—Layered products characterised by the non- homogeneity or physical structure, i.e. comprising a fibrous, filamentary, particulate or foam layer; Layered products characterised by having a layer differing constitutionally or physically in different parts
- B32B5/22—Layered products characterised by the non- homogeneity or physical structure, i.e. comprising a fibrous, filamentary, particulate or foam layer; Layered products characterised by having a layer differing constitutionally or physically in different parts characterised by the presence of two or more layers which are next to each other and are fibrous, filamentary, formed of particles or foamed
- B32B5/24—Layered products characterised by the non- homogeneity or physical structure, i.e. comprising a fibrous, filamentary, particulate or foam layer; Layered products characterised by having a layer differing constitutionally or physically in different parts characterised by the presence of two or more layers which are next to each other and are fibrous, filamentary, formed of particles or foamed one layer being a fibrous or filamentary layer
- B32B5/26—Layered products characterised by the non- homogeneity or physical structure, i.e. comprising a fibrous, filamentary, particulate or foam layer; Layered products characterised by having a layer differing constitutionally or physically in different parts characterised by the presence of two or more layers which are next to each other and are fibrous, filamentary, formed of particles or foamed one layer being a fibrous or filamentary layer another layer next to it also being fibrous or filamentary
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- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04B—GENERAL BUILDING CONSTRUCTIONS; WALLS, e.g. PARTITIONS; ROOFS; FLOORS; CEILINGS; INSULATION OR OTHER PROTECTION OF BUILDINGS
- E04B1/00—Constructions in general; Structures which are not restricted either to walls, e.g. partitions, or floors or ceilings or roofs
- E04B1/62—Insulation or other protection; Elements or use of specified material therefor
- E04B1/74—Heat, sound or noise insulation, absorption, or reflection; Other building methods affording favourable thermal or acoustical conditions, e.g. accumulating of heat within walls
- E04B1/82—Heat, sound or noise insulation, absorption, or reflection; Other building methods affording favourable thermal or acoustical conditions, e.g. accumulating of heat within walls specifically with respect to sound only
- E04B1/84—Sound-absorbing elements
- E04B1/8409—Sound-absorbing elements sheet-shaped
-
- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04B—GENERAL BUILDING CONSTRUCTIONS; WALLS, e.g. PARTITIONS; ROOFS; FLOORS; CEILINGS; INSULATION OR OTHER PROTECTION OF BUILDINGS
- E04B1/00—Constructions in general; Structures which are not restricted either to walls, e.g. partitions, or floors or ceilings or roofs
- E04B1/62—Insulation or other protection; Elements or use of specified material therefor
- E04B1/74—Heat, sound or noise insulation, absorption, or reflection; Other building methods affording favourable thermal or acoustical conditions, e.g. accumulating of heat within walls
- E04B1/82—Heat, sound or noise insulation, absorption, or reflection; Other building methods affording favourable thermal or acoustical conditions, e.g. accumulating of heat within walls specifically with respect to sound only
- E04B1/84—Sound-absorbing elements
- E04B1/86—Sound-absorbing elements slab-shaped
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B2262/00—Composition or structural features of fibres which form a fibrous or filamentary layer or are present as additives
- B32B2262/02—Synthetic macromolecular fibres
- B32B2262/0276—Polyester fibres
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- Physics & Mathematics (AREA)
- Acoustics & Sound (AREA)
- Engineering & Computer Science (AREA)
- Architecture (AREA)
- Electromagnetism (AREA)
- Civil Engineering (AREA)
- Structural Engineering (AREA)
- Soundproofing, Sound Blocking, And Sound Damping (AREA)
- Laminated Bodies (AREA)
- Building Environments (AREA)
Abstract
The invention relates to a polyester sound absorption board for low-frequency noise reduction and a polyester sound absorption composite structure, wherein the polyester sound absorption board is of a layered structure and sequentially comprises a first polyester fiber board, a polyester film, a second polyester fiber board, a polyester fiber net and a third polyester fiber board to form the layered structure; the first polyester fiber board, the second polyester fiber board and the third polyester fiber board are all made of polyester fibers; the polyester sound absorption composite structure comprises the polyester sound absorption plate and an air layer, and the air layer is arranged on one side of the first polyester fiber plate. Compared with the prior art, the sound absorption material has the characteristics of environmental protection, no stimulation and light weight of the polyester material, greatly improves the sound absorption performance of the polyester fiber material at a low-frequency part, improves the sound absorption valley of the traditional sound absorption material at a low-frequency stage, and is very suitable for various sound environment quality improvement and noise control places.
Description
Technical Field
The invention relates to the field of noise control in environmental engineering, in particular to a polyester sound absorption board for low-frequency noise reduction.
Background
Acoustic materials are widely used in numerous areas of national economy. The polyester fiber sound-absorbing material is widely applied to people due to the characteristics of environmental protection, no irritation, no toxicity, no harm and the like, but the polyester fiber sound-absorbing material has the same main defects as the traditional sound-absorbing material that the product mainly aims at medium and high frequency noise and the reflection and absorption of low frequency noise are not ideal. Although the low-frequency sound absorption performance can be improved by increasing the volume weight and the material thickness, the improvement effect is limited, and the cost and the space size are limited.
Chinese utility model patent CN204753867U discloses a low frequency acoustic board, and this patent uses the fibreboard as the base plate to hot melt nethike embrane is compound the veneer on the fibreboard as the adhesive, makes low frequency acoustic board, though its environmental protection is nonhazardous, nevertheless still is limited to low frequency noise's absorption effect promotion, consequently can't obviously improve low frequency acoustic valley in-service use. The Chinese invention patent CN106223505A discloses a polyester fiber sound-absorbing board, which comprises a polyester fiber layer and a sound-absorbing board main body, wherein the polyester fiber layer is coated on the sound-absorbing board main body, so that the moisture absorption and change are avoided, the service life is prolonged, but the low-frequency sound absorption defect cannot be overcome in the practical use because the low-frequency sound absorption performance of the fiber material is poor. China CN 110565826A discloses a low frequency noise reduction composite sound absorption structure, including aluminum fiber board, polyester fiber board, air layer, but the sound absorption composite material in this patent technology absorbs sound effect not good, and the air layer thickness that needs to cooperate is not less than 100mm, and the installation occupation space is big to the structure preparation is complicated, and the parameter performance is unadjustable. The material and the structure of the invention are integrally formed by a pure physical process, the structure is light, the installation is easy, the parameters are adjustable, the performance can be optimized, and the sound absorption performance of the required noise reduction frequency band can be designed and optimized by changing the material parameters.
Disclosure of Invention
The invention aims to overcome the defect of poor low-frequency noise absorption effect in the prior art and provide a polyester sound absorption plate for low-frequency noise reduction and a polyester sound absorption composite structure.
The purpose of the invention can be realized by the following technical scheme:
a polyester sound absorption board for low-frequency noise reduction is of a layered structure and sequentially comprises a first polyester fiber board, a polyester film, a second polyester fiber board, a polyester fiber net and a third polyester fiber board to form the layered structure; the first polyester fiber board, the second polyester fiber board and the third polyester fiber board are all made of polyester fibers.
The polyester sound absorption board is manufactured by superposing and hot-pressing the first polyester fiber board, the polyester film, the second polyester fiber board, the polyester fiber net and the third polyester fiber board.
In the hot pressing process, the heating temperature is 130-200 ℃, the pressurizing time is 5-15 hours, and the pressure is 5-20 Mpa.
The layered materials are compounded together through hot pressing, so that no adhesive is added for connection and fixation among the first polyester fiber board, the polyester film, the second polyester fiber board, the polyester fiber net and the third polyester fiber board, and the laminated material is safe and environment-friendly.
Along the propagation direction of a sound source, the arrangement sequence of the materials of all layers in the polyester sound absorption plate is a third polyester fiber plate, a polyester fiber net, a second polyester fiber plate, a polyester film and a first polyester fiber plate.
The fineness of the polyester fiber is 1 to 50 deniers.
The thickness of the polyester film is 0.01-0.2 mm.
The net density of the polyester fiber net is 5-60 meshes.
The thickness of the polyester sound absorption plate is at least 5 mm.
The polyester film is added on the basis of the polyester fiber board, so that the film resonance loss effect is generated, namely when incident sound waves act on the surface of the film, a resonance sound absorption effect can occur in a certain frequency range. In addition, the polyester fiber net is arranged near the film, so that the resonance amplitude of the film is inhibited, the restraint loss of the film resonance is increased, and the sound absorption performance of the sound absorption material in a low-frequency range is greatly improved.
In the present invention, the key parameters capable of absolutely absorbing the sound at low frequencies are the thickness of the polyester film and the mesh density of the polyester fiber mesh. This is because for a membrane resonant structure of a certain cavity, its resonant frequency is mainly determined by the membrane size and mass per unit area. Therefore, the thickness of the polyester film determines the mass of the film per unit area, the net density of the polyester fiber net determines the film size corresponding to unit grids, and parameter design and optimization can be carried out according to the low-frequency component for reducing noise in actual needs.
The invention also provides a polyester sound absorption composite structure made of the polyester sound absorption plate for reducing the noise at low frequency, which comprises the polyester sound absorption plate and an air layer along the propagation direction of a sound source, wherein the air layer is arranged on one side of the first polyester fiber plate.
The thickness of the air layer is at least 50 mm.
The polyester sound absorption composite structure can be used independently, and can also be used as a structural interlayer in a composite mode.
Compared with the prior art, the invention has the characteristics of good sound absorption and mechanical properties, no toxicity, environmental protection, constructability and the like, and the adopted preparation process is simple and easy to implement, easy for large-scale production and very suitable for various sound environment quality improvement and noise control places.
Drawings
FIG. 1 is a schematic view showing the structure of a polyester sound-absorbing panel according to the present invention;
FIG. 2 is an exploded view of the polyester sound-absorbing panel according to the present invention;
FIG. 3 is a schematic structural view of a polyester sound absorbing composite structure of the present invention;
in the figure, 1 is a first polyester fiber sheet, 2 is a polyester film, 3 is a second polyester fiber sheet, 4 is a polyester fiber net, 5 is a third polyester fiber sheet, 6 is an air layer, and 7 is a propagation direction of a sound source.
Detailed Description
The present invention will be described in detail with reference to specific examples. The following examples will assist those skilled in the art in further understanding the invention, but are not intended to limit the invention in any way. It should be noted that variations and modifications can be made by persons skilled in the art without departing from the spirit of the invention. All falling within the scope of the present invention.
A polyester sound absorption board for low-frequency noise reduction is of a laminated structure, as shown in figures 1 and 2, materials of layers from top to bottom are a first polyester fiber board 1, a polyester film 2, a second polyester fiber board 3, a polyester fiber net 4 and a third polyester fiber board 5; wherein, the first polyester fiber board 1, the second polyester fiber board 3 and the third polyester fiber board 5 are all made of polyester fiber; the first polyester fiber board 1, the polyester film 2, the second polyester fiber board 3, the polyester fiber net 4 and the third polyester fiber board 5 are combined together through superposition and hot pressing to form a composite layered material, any adhesive is not added for connection and fixation among the layers of materials, and technological parameters of the hot pressing process can be set to be that the heating temperature is 130-200 ℃, the pressurizing time is 5-15 hours, and the pressure is 5-20 Mpa.
In use, along the propagation direction 7 of a sound source, the arrangement sequence of the materials of the polyester sound absorption plate is a third polyester fiber plate 5, a polyester fiber net 4, a second polyester fiber plate 3, a polyester film 2 and a first polyester fiber plate 1.
Wherein, the fineness of the polyester fiber is 1 to 50 deniers.
The thickness of the polyester film 2 is 0.01 to 0.2 mm.
The web density of the polyester fiber web 4 is 5 to 60 mesh.
The polyester sound absorbing sheet has a thickness of at least 5 mm.
Further, the above polyester sound-absorbing panel for low-frequency noise reduction is used to produce a polyester sound-absorbing composite structure which, as shown in fig. 3, includes the polyester sound-absorbing panel and an air layer 6 along the propagation direction 7 of the sound source, and the air layer 6 is provided on one side of the first polyester fiber sheet 1, and the thickness of the air layer 6 is at least 50 mm.
The following is a specific implementation process of the invention:
example 1
After a polyester fiber board made of polyester fibers with the fineness of 3 deniers, a polyester film 2 with the thickness of 0.05 mm and a polyester fiber net 4 with the net density of 24 meshes are completely superposed, hot pressing is carried out to obtain a polyester sound absorption board with the thickness of 8 mm; the technological parameters of the hot pressing process are that the heating temperature is 180 ℃, the pressurizing time is 10 hours, and the pressure is 15 Mpa.
The prepared polyester sound absorption plate is superposed with an air layer 6 of 50mm, and after the sound absorption coefficient of a finished product is tested by an impedance tube, the average value of the sound absorption coefficient between 100 and 500Hz reaches 0.4075, and the sound absorption coefficient at each central frequency is shown in the following table.
| Frequency (Hz) | 100 | 125 | 160 | 200 | 250 | 315 | 400 | 500 |
| Abs | 0.24 | 0.24 | 0.23 | 0.21 | 0.41 | 0.96 | 0.55 | 0.42 |
Example 2
After a polyester fiber board made of 16 denier polyester fibers, a polyester film 2 with the thickness of 0.05 mm and a polyester fiber net 4 with the net density of 40 meshes are completely superposed, hot pressing is carried out to obtain a polyester sound absorption board with the thickness of 8 mm; the technological parameters of the hot pressing process are that the heating temperature is 180200 ℃, the pressurizing time is 10 hours, and the pressure is 15 Mpa.
The prepared polyester sound absorption plate is superposed with an air layer of 80 mm, and after a finished product is tested for sound absorption coefficient through an impedance tube, the average value of the sound absorption coefficient between 100 and 500Hz reaches 0.495, and the sound absorption coefficient at each central frequency is shown in the following table.
| Frequency (Hz) | 100 | 125 | 160 | 200 | 250 | 315 | 400 | 500 |
| Abs | 0.25 | 0.31 | 0.34 | 0.21 | 0.24 | 0.96 | 0.89 | 0.75 |
Example 3
After the polyester fiber board made of polyester fiber with the fineness of 8 deniers, the polyester film 2 with the thickness of 0.1 mm and the polyester fiber net 4 with the net density of 22 meshes are completely superposed, the polyester fiber board is subjected to hot pressing to form the polyester sound absorption board with the thickness of 16 mm, and the technological parameters of the hot pressing process are that the heating temperature is 180-DEG C, the pressing time is 10 hours and the pressure is 15 Mpa.
The prepared polyester sound absorption plate is superposed with an air layer of 80 mm, and after the sound absorption coefficient of a finished product is tested by an impedance tube, the average value of the sound absorption coefficient between 100 and 500Hz reaches 0.524, and the sound absorption coefficient at each central frequency is shown in the following table.
| Frequency (Hz) | 100 | 125 | 160 | 200 | 250 | 315 | 400 | 500 |
| Abs | 0.32 | 0.4 | 0.42 | 0.28 | 0.29 | 0.99 | 0.81 | 0.68 |
Example 4
After the polyester fiber board made of the polyester fiber with the fineness of 33 deniers, the polyester film 2 with the thickness of 0.125 mm and the polyester fiber net 4 with the net density of 24 meshes are completely superposed, the polyester fiber board is subjected to hot pressing to form the polyester sound absorption board with the thickness of 20 mm, and the technological parameters of the hot pressing process are that the heating temperature is 180 ℃, the pressing time is 10 hours and the pressure is 15 Mpa.
The prepared polyester sound absorption plate is superposed with an air layer of 100mm, and the sound absorption coefficient of a finished product is tested by an impedance tube, so that the average value of the sound absorption coefficient between 100 and 500Hz reaches 0.544, and the sound absorption coefficient at each central frequency is shown in the following table.
| Frequency (Hz) | 100 | 125 | 160 | 200 | 250 | 315 | 400 | 500 |
| Abs | 0.32 | 0.4 | 0.42 | 0.58 | 0.99 | 0.81 | 0.74 | 0.68 |
Example 5
After finishing the superposition of the polyester fiber with the fineness of 8 deniers, the polyester film with the thickness of 0.05 mm and the polyester fiber net with the net density of 24 meshes, hot pressing the mixture into a fiberboard with the thickness of 20 mm, wherein the technological parameters of the hot pressing process are that the heating temperature is 180 ℃, the pressing time is 10 hours and the pressure is 15 Mpa.
When the prepared polyester sound absorption plate is superposed with an air layer of 100mm, the sound absorption coefficient of the finished product is tested by an impedance tube, the mean value of the sound absorption coefficient between 100 and 500Hz reaches 0.573, and the sound absorption coefficient at each central frequency is shown in the following table.
| Frequency (Hz) | 100 | 125 | 160 | 200 | 250 | 315 | 400 | 500 |
| Abs | 0.39 | 0.41 | 0.44 | 0.45 | 0.52 | 0.93 | 0.76 | 0.68 |
Example 6
After finishing the superposition of the polyester fiber with the fineness of 1 denier, the polyester film with the thickness of 0.01 mm and the polyester fiber net with the net density of 60 meshes, hot pressing the mixture into a fiberboard with the thickness of 20 mm, wherein the technological parameters of the hot pressing process are that the heating temperature is 200 ℃, the pressing time is 5 hours and the pressure is 5 Mpa.
The prepared polyester sound absorption plate is superposed with an air layer of 100mm, and the sound absorption coefficient of the finished product is tested by an impedance tube, so that the average value of the sound absorption coefficient between 100 and 500Hz reaches 0.559, and the sound absorption coefficient at each central frequency is shown in the following table.
| Frequency (Hz) | 100 | 125 | 160 | 200 | 250 | 315 | 400 | 500 |
| Abs | 0.29 | 0.31 | 0.35 | 0.44 | 0.51 | 0.76 | 0.83 | 0.98 |
Example 7
After the polyester fiber with the fineness of 50 deniers, the polyester film with the thickness of 0.2mm and the polyester fiber net with the net density of 5 meshes are completely superposed, hot pressing is carried out to obtain the fiberboard with the thickness of 20 mm, and the technological parameters of the hot pressing process are that the heating temperature is 150 ℃, the pressing time is 15 hours and the pressure is 20 Mpa.
The prepared polyester sound-absorbing board is superposed with an air layer of 100mm, and the sound-absorbing coefficient of a finished product is tested by an impedance tube, so that the average value of the sound-absorbing coefficient of the finished product between 100 and 500Hz reaches 0.674, and the sound-absorbing coefficient at each central frequency is shown in the following table.
| Frequency (Hz) | 100 | 125 | 160 | 200 | 250 | 315 | 400 | 500 |
| Abs | 0.52 | 0.85 | 0.97 | 0.94 | 0.82 | 0.73 | 0.64 | 0.58 |
The novel polyester composite structure has the characteristics of environmental protection, no stimulation and light weight of the polyester material, greatly improves the sound absorption performance of the polyester fiber material at a low-frequency part, improves the sound absorption valley of the traditional sound absorption material at a low-frequency stage, and is very suitable for various sound environment quality improvement and noise control places.
The foregoing description of specific embodiments of the present invention has been presented. It is to be understood that the present invention is not limited to the specific embodiments described above, and that various changes and modifications may be made by one skilled in the art within the scope of the appended claims without departing from the spirit of the invention.
Claims (10)
1. The polyester sound absorption board for low-frequency noise reduction is characterized by being of a layered structure and sequentially comprising a first polyester fiber board (1), a polyester film (2), a second polyester fiber board (3), a polyester fiber net (4) and a third polyester fiber board (5); the first polyester fiber board (1), the second polyester fiber board (3) and the third polyester fiber board (5) are all made of polyester fibers.
2. The polyester panel for noise reduction at low frequency according to claim 1, wherein the polyester panel is made of the first polyester fiber sheet (1), the polyester film (2), the second polyester fiber sheet (3), the polyester fiber net (4) and the third polyester fiber sheet (5) by stacking and hot pressing.
3. The polyester sound absorption plate for reducing noise at low frequency according to claim 2, wherein the heating temperature is 130-200 ℃, the pressurizing time is 5-15 hours, and the pressure is 5-20 MPa in the hot pressing process.
4. The polyester panel for noise reduction at low frequencies according to claim 1, wherein the arrangement of the materials of the layers in the polyester panel along the propagation direction (7) of the sound source is the third polyester fiber plate (5), the polyester fiber net (4), the second polyester fiber plate (3), the polyester film (2) and the first polyester fiber plate (1).
5. The polyester sound absorption panel for reducing noise at low frequencies as claimed in claim 1, wherein the fineness of the polyester fiber is 1 to 50 deniers.
6. A polyester panel for noise reduction at low frequencies according to claim 1, wherein the thickness of the polyester film (2) is 0.01-0.2 mm.
7. The polyester sound absorption panel for reducing noise at low frequencies as claimed in claim 1, wherein the web density of the polyester fiber web (4) is 5-60 mesh.
8. The polyester sound absorption plate for reducing noise at low frequencies as claimed in claim 1, wherein the polyester sound absorption plate has a thickness of at least 5 mm.
9. A sound-absorbing composite structure of polyester made of a sound-absorbing panel for low frequency noise reduction according to any one of claims 1 to 8, wherein said sound-absorbing composite structure comprises said sound-absorbing panel of polyester and an air layer (6), and said air layer (6) is provided on one side of said first polyester fiber sheet (1).
10. A composite sound absorbing polyester structure for reducing noise at low frequencies according to claim 9, wherein the air layer (6) has a thickness of at least 50 mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010074327.9A CN111186189B (en) | 2020-01-22 | 2020-01-22 | Polyester sound absorption plate for low-frequency noise reduction and polyester sound absorption composite structure |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010074327.9A CN111186189B (en) | 2020-01-22 | 2020-01-22 | Polyester sound absorption plate for low-frequency noise reduction and polyester sound absorption composite structure |
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| Publication Number | Publication Date |
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| CN111186189A true CN111186189A (en) | 2020-05-22 |
| CN111186189B CN111186189B (en) | 2021-09-14 |
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Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH11219186A (en) * | 1998-01-30 | 1999-08-10 | Itochu Corp | Sound absorbing-insulating structure body |
| CN109235810A (en) * | 2018-08-30 | 2019-01-18 | 深圳森阳环保材料科技有限公司 | A kind of polyester fibre acoustic panel |
-
2020
- 2020-01-22 CN CN202010074327.9A patent/CN111186189B/en active Active
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH11219186A (en) * | 1998-01-30 | 1999-08-10 | Itochu Corp | Sound absorbing-insulating structure body |
| CN109235810A (en) * | 2018-08-30 | 2019-01-18 | 深圳森阳环保材料科技有限公司 | A kind of polyester fibre acoustic panel |
Non-Patent Citations (1)
| Title |
|---|
| KLARA KALINOVA: "A Sound Absorptive Element Comprising an Acoustic Resonance Nanofibrous", 《RECENT PATENTS ON NANOTECHNOLOGY》 * |
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| CN111186189B (en) | 2021-09-14 |
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