CN209534412U - A kind of composite material for reducing noise - Google Patents
A kind of composite material for reducing noise Download PDFInfo
- Publication number
- CN209534412U CN209534412U CN201821190537.9U CN201821190537U CN209534412U CN 209534412 U CN209534412 U CN 209534412U CN 201821190537 U CN201821190537 U CN 201821190537U CN 209534412 U CN209534412 U CN 209534412U
- Authority
- CN
- China
- Prior art keywords
- layer
- layers
- composite material
- reducing noise
- noise
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
Links
- 239000002131 composite material Substances 0.000 title claims abstract description 12
- 239000004745 nonwoven fabric Substances 0.000 claims abstract description 10
- 229920002943 EPDM rubber Polymers 0.000 claims abstract description 6
- RNFJDJUURJAICM-UHFFFAOYSA-N 2,2,4,4,6,6-hexaphenoxy-1,3,5-triaza-2$l^{5},4$l^{5},6$l^{5}-triphosphacyclohexa-1,3,5-triene Chemical compound N=1P(OC=2C=CC=CC=2)(OC=2C=CC=CC=2)=NP(OC=2C=CC=CC=2)(OC=2C=CC=CC=2)=NP=1(OC=1C=CC=CC=1)OC1=CC=CC=C1 RNFJDJUURJAICM-UHFFFAOYSA-N 0.000 claims abstract description 5
- 239000003063 flame retardant Substances 0.000 claims abstract description 5
- 239000000758 substrate Substances 0.000 claims abstract description 4
- 239000000463 material Substances 0.000 abstract description 5
- 238000010030 laminating Methods 0.000 abstract 3
- 239000004814 polyurethane Substances 0.000 description 24
- 230000000694 effects Effects 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000002035 prolonged effect Effects 0.000 description 2
- 238000010521 absorption reaction Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 238000009413 insulation Methods 0.000 description 1
- 229920002635 polyurethane Polymers 0.000 description 1
Landscapes
- Laminated Bodies (AREA)
Abstract
The utility model discloses a kind of composite material for reducing noise, belongs to quieter material technical field.The composite material for reducing noise includes the mutually laminating first PU layers and the 2nd PU layers；Wherein, the first PU layers of top surface are laminating a non-woven fabrics, and the 2nd PU layers of bottom surface are laminating an EPDM substrate, and the described first PU layers thickness than the described 2nd PU layers thickness it is small.The noise of low-frequency range is effectively reduced by PU layers of sound-absorbing of bilayer in the utility model；And the non-woven fabrics that V-2 is reached using flame retardant rating, improves the service life of the composite material.
Description
Technical Field
The utility model relates to an amortization material technical field, in particular to a combined material for noise reduction.
Background
In the field of modern engineering machinery, under the condition that the structural rigidity and the frame structure of a product design are determined, noise generated during the working of the machinery is reduced, and the noise is an environmental protection task which all manufacturers face. Mechanical noise is derived from vibration generated when the engine works and is transmitted to some rigid parts to cause vibration; meanwhile, the vibration continuously transmits secondary vibration generated in the machine, and noise generated when the hydraulic system works.
In the field of engineering machinery at the present stage, all manufacturers use PU (polyurethane) for sound insulation and absorption, but the simple method is not ideal for the noise reduction effect of the medium and low frequency band noise.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to provide a combined material for noise reduction to solve the unsatisfactory problem of present noise cancelling effect.
In order to solve the technical problem, the utility model provides a composite material for reducing noise, which comprises a first PU layer and a second PU layer which are mutually covered; wherein,
the first PU layer top surface is laminated with the non-woven fabrics, second PU layer bottom surface is laminated with the EPDM base plate.
Optionally, the thickness of the first PU layer is smaller than the thickness of the second PU layer.
Optionally, the flame retardant rating of the nonwoven fabric reaches V-2.
The utility model provides a composite material for reducing noise, which comprises a first PU layer and a second PU layer which are mutually combined; the first PU layer is coated with non-woven fabrics on the top surface, the second PU layer is coated with an EPDM substrate on the bottom surface, and the thickness of the first PU layer is smaller than that of the second PU layer. The utility model effectively reduces the noise of low frequency band by absorbing sound through the double-layer PU layer; and the non-woven fabric with the flame retardant grade reaching V-2 is used, so that the service life of the composite material is prolonged.
Drawings
Fig. 1 is a schematic structural diagram of the composite material for reducing noise according to the present invention.
Detailed Description
The composite material for reducing noise according to the present invention will be described in detail with reference to the accompanying drawings and specific embodiments. The advantages and features of the present invention will become more fully apparent from the following description and appended claims. It should be noted that the drawings are in simplified form and are not to precise scale, and are provided for convenience and clarity in order to facilitate the description of the embodiments of the present invention.
Example one
The utility model provides a combined material for noise reduction, including first PU layer 1 and second PU layer 2 that the looks covers to close, inhale the sound through double-deck PU layer, can effectively reduce the noise of low-frequency channel. Further, the first PU layer 1 and the second PU layer 2 are covered together by a hot covering process; further, the thickness of the first PU layer 1 is smaller than the thickness of the second PU layer 2. The top surface of the first PU layer 1 is covered with a non-woven fabric 3, and the bottom surface of the second PU layer 2 is covered with an EPDM (ethylene propylene diene monomer) substrate 4. The flame retardant grade of the non-woven fabric 3 reaches V-2, so that the service life of the composite material is prolonged.
The above description is only for the preferred embodiment of the present invention and is not intended to limit the scope of the present invention, and any modification and modification made by those skilled in the art according to the above disclosure are all within the scope of the claims.
Claims (1)
1. A composite material for reducing noise comprising a first PU layer and a second PU layer in combination; wherein,
the top surface of the first PU layer is covered with non-woven fabrics, and the bottom surface of the second PU layer is covered with an EPDM substrate;
the thickness of the first PU layer is smaller than that of the second PU layer;
the flame retardant rating of the non-woven fabric reaches V-2.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821190537.9U CN209534412U (en) | 2018-07-26 | 2018-07-26 | A kind of composite material for reducing noise |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821190537.9U CN209534412U (en) | 2018-07-26 | 2018-07-26 | A kind of composite material for reducing noise |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN209534412U true CN209534412U (en) | 2019-10-25 |
Family
ID=68244535
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201821190537.9U Expired - Fee Related CN209534412U (en) | 2018-07-26 | 2018-07-26 | A kind of composite material for reducing noise |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN209534412U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110920179A (en) * | 2019-12-05 | 2020-03-27 | 上海新安汽车隔音毡有限公司 | Electric automobile battery sound-proof housing part and manufacturing method thereof |
-
2018
- 2018-07-26 CN CN201821190537.9U patent/CN209534412U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110920179A (en) * | 2019-12-05 | 2020-03-27 | 上海新安汽车隔音毡有限公司 | Electric automobile battery sound-proof housing part and manufacturing method thereof |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20191025 Termination date: 20200726 |