CN203895110U - Sound-absorption composite material in sandwich structure - Google Patents
Sound-absorption composite material in sandwich structure Download PDFInfo
- Publication number
- CN203895110U CN203895110U CN201320819148.9U CN201320819148U CN203895110U CN 203895110 U CN203895110 U CN 203895110U CN 201320819148 U CN201320819148 U CN 201320819148U CN 203895110 U CN203895110 U CN 203895110U
- Authority
- CN
- China
- Prior art keywords
- sound
- sound absorption
- foam
- sandwich construction
- insulation
- 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
Landscapes
- Building Environments (AREA)
- Laminated Bodies (AREA)
Abstract
The utility model relates to a sound-absorption composite material in a sandwich structure, and the structure is characterized in that 1, a foam thickness of a central layer is from 20 mm to 40 mm; 2, two surfaces of sound absorption foam are respectively coated with a polyurethane adhesive; 3, the aperture ratio of the sound absorption foam is greater than 80%, and the aperture is from 700 microns and 800 microns; 4, two damping material layers are made of chlorinated butyl rubber and chlorinated butyl rubber, and the thickness is from 0.8 mm to 2 mm.
Description
Technical field
The utility model relates to technical field of polymer composite materials, relates in particular to a kind of sound absorption and insulation compound substance of sandwich construction.
Background technology
There is no in the market the sound insulation acoustic absorption composite material with sandwich construction, existing sound insulating material is mainly with foamed material, sound-insulating felt, the form that fibrofelt etc. are single is main, use function to exist with sound absorption or sound insulation simple function, when the form with wherein a kind of is used, only can realize sound absorption or sound insulation simple function, diversity due to audio frequency spectrum, a kind of material only can have good barrier or absorbability to the sound wave of certain band frequency wherein, when running into the sound wave identical with material resonant frequency, sound insulation or acoustically effective sharply decline, cause the comprehensive defening effect of material bad, there is certain defect in the engineering effort of actual use.
In order to reach better comprehensive defening effect, in actual noise control engineering, sound insulating material need to design for the frequency spectrum of noise, selects suitable material to carry out sound-absorbing and sound insulation processing, thereby realizes good comprehensive defening effect.Therefore when the selection of material, need to use the Material cladding of different resonant frequencies, thereby realize absorption maximum or obstruct to full rate section sound wave, could realize good comprehensive defening effect.
Sound absorption and insulation compound substance of the present utility model, alternately compound by multilayer sound insulation acoustic absorbant, the Material cladding of different densities and acoustic characteristic, integrating sound absorption and insulation has sound wave is had to reflection, stop, block, damping weakens, make sound wave in transmittance process, repeatedly pass through the material layer of different densities, sound insulating material plays reflection and locking effect to sound wave, the play effect that absorb and slacken of acoustic absorbant to sound wave, through the repeatedly propagation at different interfaces, increase sound wave propagation difficulty, thereby reach repeatedly, cut off, weaken, the object of dissipation sound wave, improve the sound insulation efficiency of material, thereby realize good comprehensive sound insulation property.
Utility model content
The utility model sound insulating material adopts damping material, damping acoustic foam, damping material compound, and total is compound by which floor density different damping acoustic foam, damping material and fibrofelt/cloth, and each interlayer has obvious interface phenomena.Due to the difference of density between each layer, according to wave propagation principle, the sound wave of incident at interface by reflecting, scattering, transmission, refraction and diffraction, acoustic energy consumption, sees through strength ratio homogenous material little.On the other hand, when sound wave incides specimen surface, a part reflects on specimen surface, and a part sees through sample and continues to propagate forward, and a part absorbs sample internal communication.In sample, in communication process, sound wave causes the air movement in sample hole, rubs with hole wall, due to glutinousness and heat-conduction effect, changes acoustic energy into heat energy and dissipates.Damping acoustic foam base material is a kind of viscoelastic material, has larger damping capacity, is a kind of material with good sound absorption and antihunt action.Acoustic energy consumption is increased, reach defening effect.
Sandwich construction sound absorption and insulation compound substance described in the utility model, its structure comprises: rubbery foam layer; Be compound in the adhesive on rubbery foam layer; Be compound in the damping material on rubbery foam layer; Described damping material thickness is 0.8 ~ 2mm.
The rubber of acoustic foam can select to adopt the better rubber expanded materials of damping and amortization such as chlorinated scoline, brombutyl, thiokol according to the frequency spectrum of noise.
Tackifier can be selected the adhesives such as acrylic compounds, polyurethanes.
Damping material can adopt chlorinated scoline, brombutyl, thiokol etc.
Adhesive glue layer thickness is 0.05 ~ 0.2mm.
Foam percentage of open area surpasses 80%, and aperture is 700 ~ 900 μ m, and middle layer depth of foam is 20 ~ 40mm.
The utility model compared with prior art has the following advantages:
(1) quality is lighter, and the material oise insulation factor of unit mass is larger;
(2) soft, can be curling, be convenient to transportation, can under varying environment condition, construct;
(3) easily cutting, can directly cut convenient construction at the construction field (site).
(4) wherein there is the reinforcement of fiber felt-cloth, high compared with general acoustics foamy body, cracky not.
(5) foam surface has sound-insulating felt to cover, and in use, foam voids is difficult for entering dust, causes sound absorbing capabilities to decline.
Accompanying drawing explanation
Below in conjunction with the drawings and specific embodiments, the utility model is described in further detail.
Fig. 1 the utility model material structure figure.
Reference numeral implication is as follows:
1: acoustic coating; 2: acoustic foam layer.
Embodiment
Below in conjunction with each embodiment, describe the utility model in detail.
Embodiment 1
By acoustic foam coated on both sides adhesive, be placed between two-layer sound insulation damping material, then carry out hot pressing compound, hot pressing combined temp is 70 ℃, and composite pressure is 1MPa, obtains sandwich construction sound absorption and insulation compound substance semi-manufacture, deburring, removes residual gum stick, cutting packing.
Material structure:
Middle layer depth of foam is 30mm.
The rubber of acoustic foam adopts brombutyl expanded material.
Tackifier can be selected acrylic compounds adhesive.
Damping material felt can adopt brombutyl etc.
Adhesive glue layer thickness is 0.15mm.
Foam percentage of open area surpasses 85%, and aperture is 750 μ m.
Damping material thickness is 1mm.
Claims (6)
1. a sound absorption and insulation compound substance for sandwich construction, it comprises
Rubbery foam layer;
Be compound in the adhesive on rubbery foam layer;
Be compound in the damping material on rubbery foam layer;
Described damping material thickness is 0.8 ~ 2mm.
2. the sound absorption and insulation compound substance of sandwich construction according to claim 1, is characterized in that, rubbery foam percentage of open area 80%, and aperture is 700 ~ 900 μ m, depth of foam is 20 ~ 40mm.
3. the sound absorption and insulation compound substance of sandwich construction according to claim 1, is characterized in that, the material of rubbery foam is chlorinated scoline, or brombutyl, or thiokol.
4. the sound absorption and insulation compound substance of sandwich construction according to claim 1, is characterized in that, described tackifier is acrylic compounds, polyurethanes adhesive.
5. the sound absorption and insulation compound substance of sandwich construction according to claim 1, is characterized in that, described adhesive glue layer thickness is 0.05 ~ 0.2mm.
6. the sound absorption and insulation compound substance of sandwich construction according to claim 1, is characterized in that, described damping material is chlorinated scoline, or brombutyl, or thiokol.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320819148.9U CN203895110U (en) | 2013-12-13 | 2013-12-13 | Sound-absorption composite material in sandwich structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320819148.9U CN203895110U (en) | 2013-12-13 | 2013-12-13 | Sound-absorption composite material in sandwich structure |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203895110U true CN203895110U (en) | 2014-10-22 |
Family
ID=51721483
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201320819148.9U Expired - Fee Related CN203895110U (en) | 2013-12-13 | 2013-12-13 | Sound-absorption composite material in sandwich structure |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203895110U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110406554A (en) * | 2018-04-28 | 2019-11-05 | 比亚迪股份有限公司 | The dust cover denoising structure and noise-reduction method of track train |
-
2013
- 2013-12-13 CN CN201320819148.9U patent/CN203895110U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110406554A (en) * | 2018-04-28 | 2019-11-05 | 比亚迪股份有限公司 | The dust cover denoising structure and noise-reduction method of track train |
| CN110406554B (en) * | 2018-04-28 | 2021-11-12 | 比亚迪股份有限公司 | Dust cover noise reduction structure and noise reduction method of rail train |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| USRE45144E1 (en) | Multi-layer sound attenuating acoustic panel | |
| CN102968985B (en) | Thin broadband sound-absorbing structure of composite multi-layer mechanical impedance plates | |
| CN203895111U (en) | Composite material with sound absorption and insulation structure | |
| JP2004126487A (en) | Sound absorbing structure having honeycomb material layer made of composite structure layer of air layer and foam layer | |
| CN207458569U (en) | Sound insulating board and sound insulating cover | |
| CN106218540A (en) | A kind of noise reduction acoustical and thermal novel-section flitch | |
| CN1754201B (en) | Sound-absorbing structure using thin film | |
| CA2460531A1 (en) | Engine intake manifold made of noise barrier composit material | |
| CN103761961A (en) | Sound absorbing and insulating composite material of interlayer structure and preparation method | |
| CN203895110U (en) | Sound-absorption composite material in sandwich structure | |
| Biskupičová et al. | Sound absorption properties of materials based on recycled plastic granule mixtures | |
| JP2014514603A (en) | Sound absorbing and soundproofing composite material | |
| KR200450881Y1 (en) | complex soundproof panel | |
| CN203895112U (en) | Multilayer micropore composite corrugated soundproof plate | |
| KR20070037274A (en) | Vacuum panel | |
| CN209114643U (en) | A kind of sound-absorbing deadening felt | |
| CN202996287U (en) | Thin broadband sound-absorbing structure compounded with multi layers of mechanical impedance plates | |
| RU2646252C1 (en) | Sound-absorbing lining | |
| CN202720892U (en) | Sound insulating and absorbing cotton | |
| CN112746707A (en) | Scratch-resistant sound-insulation leather wallboard | |
| CN103660451A (en) | Multilayer composite foam sound absorption material and preparation method thereof | |
| KR101911790B1 (en) | Laminate for sound insulation | |
| CN200976265Y (en) | Flexible composite soundproof cotton | |
| TW201333310A (en) | Composition structure of sound absorbing/isolating composite material | |
| FR2656887A1 (en) | Elastofibrous material making it possible to absorb noise, or to attenuate the propagation of noise in buildings |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| 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: 20141022 Termination date: 20161213 |