CN206733702U - Cavity sound-absorbing material damping sheet - Google Patents
Cavity sound-absorbing material damping sheet Download PDFInfo
- Publication number
- CN206733702U CN206733702U CN201720253948.7U CN201720253948U CN206733702U CN 206733702 U CN206733702 U CN 206733702U CN 201720253948 U CN201720253948 U CN 201720253948U CN 206733702 U CN206733702 U CN 206733702U
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- CN
- China
- Prior art keywords
- cavity
- layer
- sound
- damping sheet
- absorbing material
- 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
- 238000013016 damping Methods 0.000 title claims abstract description 31
- 239000011358 absorbing material Substances 0.000 title claims abstract description 18
- 239000010410 layer Substances 0.000 claims abstract description 61
- 229920002943 EPDM rubber Polymers 0.000 claims abstract description 16
- 238000005187 foaming Methods 0.000 claims abstract description 16
- 239000000463 material Substances 0.000 claims abstract description 16
- 229920000915 polyvinyl chloride Polymers 0.000 claims abstract description 10
- 239000004800 polyvinyl chloride Substances 0.000 claims abstract description 10
- 239000012790 adhesive layer Substances 0.000 claims abstract description 9
- 229920006332 epoxy adhesive Polymers 0.000 claims abstract description 8
- 239000010985 leather Substances 0.000 claims abstract description 8
- 150000001336 alkenes Chemical class 0.000 claims 1
- 229920006335 epoxy glue Polymers 0.000 claims 1
- 229920001596 poly (chlorostyrenes) Polymers 0.000 claims 1
- 238000004080 punching Methods 0.000 abstract description 3
- 230000009286 beneficial effect Effects 0.000 abstract description 2
- 239000011797 cavity material Substances 0.000 description 35
- 239000003822 epoxy resin Substances 0.000 description 4
- 229920000647 polyepoxide Polymers 0.000 description 4
- XEKOWRVHYACXOJ-UHFFFAOYSA-N Ethyl acetate Chemical compound CCOC(C)=O XEKOWRVHYACXOJ-UHFFFAOYSA-N 0.000 description 3
- 238000009413 insulation Methods 0.000 description 3
- 230000009467 reduction Effects 0.000 description 3
- 239000004593 Epoxy Substances 0.000 description 2
- 229920000459 Nitrile rubber Polymers 0.000 description 2
- 208000002925 dental caries Diseases 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 244000144980 herd Species 0.000 description 2
- 238000002360 preparation method Methods 0.000 description 2
- YXIWHUQXZSMYRE-UHFFFAOYSA-N 1,3-benzothiazole-2-thiol Chemical compound C1=CC=C2SC(S)=NC2=C1 YXIWHUQXZSMYRE-UHFFFAOYSA-N 0.000 description 1
- 240000007594 Oryza sativa Species 0.000 description 1
- 235000007164 Oryza sativa Nutrition 0.000 description 1
- NINIDFKCEFEMDL-UHFFFAOYSA-N Sulfur Chemical compound [S] NINIDFKCEFEMDL-UHFFFAOYSA-N 0.000 description 1
- 239000005864 Sulphur Substances 0.000 description 1
- 230000009471 action Effects 0.000 description 1
- 239000000853 adhesive Substances 0.000 description 1
- 230000001070 adhesive effect Effects 0.000 description 1
- 230000032683 aging Effects 0.000 description 1
- 239000010426 asphalt Substances 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 238000003486 chemical etching Methods 0.000 description 1
- 239000011248 coating agent Substances 0.000 description 1
- 238000000576 coating method Methods 0.000 description 1
- 238000001035 drying Methods 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 238000007654 immersion Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000002156 mixing Methods 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000000149 penetrating effect Effects 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 235000009566 rice Nutrition 0.000 description 1
- 238000003756 stirring Methods 0.000 description 1
Landscapes
- Laminated Bodies (AREA)
- Soundproofing, Sound Blocking, And Sound Damping (AREA)
Abstract
The utility model provides a kind of cavity sound-absorbing material damping sheet, is made up of the top layer that sets gradually from top to down, cavity layer, EPDM foaming sound-proofs layer, modified epoxy adhesive layer.The top layer is artificial polyvinyl chloride leather material, and punching above has circular hole, and the cavity layer is provided with trumpet type cavity, and trumpet type cavity is structure wide at the top and narrow at the bottom.The beneficial effect that the utility model is brought is:The small circular holes gauge structure that in-car noise is entered in top layer by acoustical vibration, then noise vibration be again introduced into the wide portion space in flared cavity, noise energy is disperseed suddenly, energy loss.Because the structure of loudspeaker cavity is structure wide at the top and narrow at the bottom, remaining acoustic energy enters narrow portion dimensional energy can lose again.After noise vibration is by trumpet type cavity, EPDM foaming layers can absorb the vibrational energy in noise and EPDM foaming layer rough surface noise can be also interfered with diffusing reflection phenomenon to reduce the propagation of noise.
Description
Technical field
Sound insulation and noise reduction field of material technology is the utility model is related to, more particularly to a kind of cavity sound-absorbing material damping sheet.
Background technology
In today that automobile is increasingly popularized, people have deeper understanding and the peace to automobile to car damping material
Full property comfortableness has higher requirement.The main function of damping sheet is absorbing sound and lowering noise in automobile, automobile tire in the process of moving
With the contact on ground caused by noise, noise caused by engine luggine, the quick noise caused by circulation of air in bodywork cavity
Etc. can all influence the comfortableness of occupant.Therefore the excellent damping sheet of anti-acoustic capability is installed on automobile just seem particularly heavy
Want.At the top of engine, bicycle shed, beater or beat-up, which nearby installs sound-absorbing material, can effectively reduce noise, improve passenger
Comfortableness.But the main damping sheet of existing market is rubber-like and pitch class damping sheet, this two classes damping sheet all there is
The problem of different, pitch class damping sheet can produce harmful gas in high temperature, not resistant to chemical etching, easy to aging.
Utility model content
Technical problem to be solved in the utility model is to provide a kind of cavity sound-absorbing material damping sheet, has structural strength
The advantages of height, toughness are high, cheap, material is light, vibration damping, good sound insulation and noise reduction.
In order to solve the above technical problems, the utility model provides a kind of cavity sound-absorbing material damping sheet, by from top to down according to
The top layer of secondary setting, cavity layer, EPDM foaming sound-proofs layer, modified epoxy adhesive layer four-layer structure are formed.The top layer is
Artificial polyvinyl chloride leather material, above punching have circular hole, and the cavity layer is provided with trumpet type cavity, and trumpet type cavity is wide at the top and narrow at the bottom
Structure, cavity material are herd polyvinyl chloride materials.
The skin-material is artificial polyvinyl chloride leather material.
The thickness on the top layer is 0.5-1 millimeters, and circular aperture 0.5-1.2 millimeters, pitch of holes is 10-15 millimeters.
The height of the trumpet type cavity layer is 2-3 millimeters, the wide a diameter of 10-15 millimeters in portion, a diameter of 2-5 millis of narrow portion
Rice, trumpet type cavity spacing is 10-15 millimeters.
Thickness in the EPDM foaming sound-proofs layer is 1-2 millimeters.
The thickness 0.5-1 millimeters of the modified epoxy adhesive layer.Modified epoxy adhesive layer has after solidifying in itself
There is damping action, while be adhesive.The preparation method of modified epoxy adhesive is as follows：Acrylonitrile butadiene rubber modified asphalt mixtures modified by epoxy resin
Fat；Nitrile rubber, captax, sulphur mill mixing is uniform, then turn into 50% solution with ethyl acetate dissolving；With height
Fast stirring means are added in F-44 epoxy resin, and modified epoxy is made.
The beneficial effect that the utility model is brought is:
1st, the small circular holes gauge structure that in-car noise is entered in top layer by acoustical vibration, then noise vibration enter again
Enter the wide portion space in flared cavity, noise energy is disperseed suddenly, energy loss.Because the structure of loudspeaker cavity is under upper width
Narrow structure, remaining acoustic energy enters narrow portion dimensional energy can lose again.After noise vibration is by flared cavity, EPDM foaming
Layer can absorb the vibrational energy in noise and EPDM foaming layer rough surface noise can also be interfered and come with diffusing reflection phenomenon
Reduce the propagation of noise.
2nd, this damping sheet has the advantages of structural strength is high, toughness is high, cheap, material is light, vibration damping, good sound insulation and noise reduction.
Brief description of the drawings
Fig. 1 is structural representation of the present utility model.
In figure marked as:1- top layers, 2- cavity layers, 3-EPDM foaming sound-proof layers, 4- modified epoxy adhesive layers, 5- circles
Hole, 6- trumpet type cavitys.
Fig. 2 is that the utility model overlooks cavity layer schematic diagram.
Fig. 3 is that the utility model damping sheet cuts rear schematic shapes.
Fig. 4 is that the utility model damping sheet (dotted portion) is pasted onto use state diagram in fender.
Embodiment
Below to being elaborated with reference to accompanying drawing to preferred embodiment of the present utility model.
Embodiment 1
As shown in figure 1, a kind of cavity sound-absorbing material damping sheet, by set gradually from top to down top layer 1, cavity layer 2,
EPDM foaming sound-proofs layer 3, modified epoxy adhesive layer 4 are formed.
The top layer is artificial polyvinyl chloride leather material, and uniform intervals are formed with multiple circular holes 5 on top layer；Cavity material is
Herd polyvinyl chloride material, correspond uniform intervals in cavity layer and top layer circular hole and be formed with multiple trumpet type cavitys 6.Trumpet type
Cavity is wide at the top and narrow at the bottom.
Preparation method of the present utility model is：
Cavity layer extrudes trumpet type cavity structure penetrating up and down by mould, stand-by.There to be trumpet type cavity structure
Cavity layer upper and lower ends immerse respectively in PUR U-shaped pond, PUR is attached to cavity layer surface after immersion, is treated after drying
With.Take top layer artificial polyvinyl chloride leather material to be placed on perforating press and carry out mechanical punching, it is stand-by.Successively by top layer, cavity layer,
EPDM foaming sound-proofs are laminated plus are placed on hot press heating and pressed, and by top layer, cavity layer, EPDM foaming sound-proof layers pass through heat
Melten gel is integrated, and wherein the circular hole on top layer will align with the trumpet type cavity structure of cavity layer.Modified epoxy is glued again
Close layer and EPDM foaming sound-proof layer surfaces are uniformly coated on by coating machine.
Skin-material described in the present embodiment is artificial polyvinyl chloride leather, and the thickness in the top layer is 1 millimeter, circular aperture
1.2 millimeters, pitch of holes is 15 millimeters.Height in the trumpet type cavity layer is 3 millimeters, wide a diameter of 15 millimeters of portion, narrow portion
A diameter of 5 millimeters, trumpet type cavity spacing is 15 millimeters.Thickness in the EPDM foaming sound-proofs layer is 2 millimeters.The modification
1 millimeter of the thickness of epoxy resin adhesive layer.
For shape after this damping sheet cross cutting as shown in figure 3, main body is rectangle, one jiao in main body is formed with lacking for an arc
Mouthful.
Embodiment 2
Skin-material described in the present embodiment is artificial polyvinyl chloride leather, and the thickness in the top layer is 0.5 millimeter, circular port
0.5 millimeter of footpath, pitch of holes are 10 millimeters.Height in the trumpet type cavity layer is 2 millimeters, and wide a diameter of 10 millimeters of portion is narrow
A diameter of 2 millimeters of portion, trumpet type cavity spacing are 10 millimeters.Thickness in the EPDM foaming sound-proofs layer is 1 millimeter.It is described to change
0.5 millimeter of the thickness of property epoxy resin adhesive layer.
Claims (10)
- A kind of 1. cavity sound-absorbing material damping sheet, it is characterised in that：By set gradually from top to down top layer, cavity layer, EPDM Foaming sound-proof layer, modified epoxy adhesive layer are formed, and uniform intervals are formed with multiple circular holes on top layer.
- 2. cavity sound-absorbing material damping sheet according to claim 1, it is characterised in that：The thickness on the top layer is 0.5-1 Millimeter.
- 3. cavity sound-absorbing material damping sheet according to claim 1, it is characterised in that：The aperture 0.5-1.2 of the circular hole Millimeter, pitch of holes is 10-15 millimeters.
- 4. cavity sound-absorbing material damping sheet according to claim 1, it is characterised in that：Described top layer is by polyvinyl chloride people Leather materials are made.
- 5. cavity sound-absorbing material damping sheet according to claim 1, it is characterised in that：The cavity layer is by hard polychlorostyrene second Alkene material is made.
- 6. cavity sound-absorbing material damping sheet according to claim 1, it is characterised in that：It is formed with cavity layer uniform intervals more Individual flared cavity wide at the top and narrow at the bottom, cavity correspond with circular hole.
- 7. cavity sound-absorbing material damping sheet according to claim 6, it is characterised in that：The upper wide part of the flared cavity A diameter of 10-15 millimeters, the lower a diameter of 2-5 millimeters of narrow portion, trumpet type cavity spacing are 10-15 millimeters.
- 8. cavity sound-absorbing material damping sheet according to claim 1, it is characterised in that：The thickness of the cavity layer is 2-3 Millimeter.
- 9. cavity sound-absorbing material damping sheet according to claim 1, it is characterised in that：The thickness of the EPDM foaming sound-proofs layer Spend for 1-2 millimeters.
- 10. cavity sound-absorbing material damping sheet according to claim 1, it is characterised in that：Described modified epoxy glues Close the thickness 0.5-1 millimeters of layer.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720253948.7U CN206733702U (en) | 2017-03-16 | 2017-03-16 | Cavity sound-absorbing material damping sheet |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720253948.7U CN206733702U (en) | 2017-03-16 | 2017-03-16 | Cavity sound-absorbing material damping sheet |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206733702U true CN206733702U (en) | 2017-12-12 |
Family
ID=60557629
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201720253948.7U Expired - Fee Related CN206733702U (en) | 2017-03-16 | 2017-03-16 | Cavity sound-absorbing material damping sheet |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN206733702U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106926518A (en) * | 2017-03-16 | 2017-07-07 | 天津市浩迪橡塑科技有限公司 | Cavity sound-absorbing material damping sheet and preparation method thereof |
-
2017
- 2017-03-16 CN CN201720253948.7U patent/CN206733702U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106926518A (en) * | 2017-03-16 | 2017-07-07 | 天津市浩迪橡塑科技有限公司 | Cavity sound-absorbing material damping sheet and preparation method thereof |
| CN106926518B (en) * | 2017-03-16 | 2019-09-10 | 天津市浩迪橡塑科技有限公司 | Cavity sound-absorbing material damping sheet and preparation 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: 20171212 |