CN103381673A - Sound absorption and insulation foam polyurethane composite structure with combination arrays of soild pipes and hollow pipes - Google Patents
Sound absorption and insulation foam polyurethane composite structure with combination arrays of soild pipes and hollow pipes Download PDFInfo
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- CN103381673A CN103381673A CN2013103001020A CN201310300102A CN103381673A CN 103381673 A CN103381673 A CN 103381673A CN 2013103001020 A CN2013103001020 A CN 2013103001020A CN 201310300102 A CN201310300102 A CN 201310300102A CN 103381673 A CN103381673 A CN 103381673A
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Abstract
The invention discloses a sound absorption and insulation foam polyurethane composite structure with combination arrays of solid pipes and hollow pipes. By laying the combination arrays of the solid pipes and hollow pipes, which are formed through embedment and extraction of micro steel pipes, during the micro-foaming process of polyurethane resin, the polyurethane foaming materials and the combination arrays of the solid pipes and the hollow pipes form the composite structure; by controlling the diameters and the spacing of the solid pipes and the hollow pipes of the combination arrays and the distribution structure of the arrays, the sound insulation performance of micro-foaming polyurethane sound absorption materials can be improved considerably. The sound absorption and insulation foam polyurethane composite structure with the combination arrays of the solid pipes and the hollow pipes is applicable to sandwich layers of composite sound insulation structures such as non-bearing building partition walls, interior decorations, traffic sound barriers and sound absorption and insulation members of mechanical equipment, has the advantages of light texture, good sound absorption and insulation performance, simple preparation, low cost and the like and has a wide application prospect.
Description
Technical field
The present invention relates to a kind of occupied space pipe combination array that sound insulation has both/polyurathamc composite construction of inhaling, belong to vibration and noise reducing sandwich technical field.
Background technology
The tradition sound insulating material refers to block material, structure or the member etc. of the propagation of noise in air, material is closely knit and larger quality arranged, therefore major defect is heavy, from increasing the architecture indoor plot ratio and reducing building bearing and the environmental requirement equal angles of high sound insulation, people thirst for breaking through low this technical bottleneck of frivolous material oise insulation factor very much.Sound-absorbing material is just the opposite with traditional sound insulating material, and it is a kind of loose structure that possesses, and relies on a kind of material of friction dissipation incident acoustic energy in channels and collaterals.On traditional sense, sound absorption is both the bi-material that separates fully with sound insulation.Compound sound absorption material is a kind of multi-element composite material that is mixed with by multiple material or structure that had both possessed certain sound insulation property and had certain sound absorbing capabilities concurrently, and existing compound sound absorption material mainly contains at present: the material that the compound sound absorption material of polymer hybrid, multilayer possess different decrease of noise functions fit compound sound absorption material and the foaming body grain reinforced composite of preparation.Existingly studies have shown that above-mentioned at present existing compound sound absorption material is outstanding for the noise reduction of high frequency section (500Hz-7000Hz) noise, but very little for the noise reduction of low frequency section noise (500Hz is following).The present invention's design is take the polyurethane micro-foaming material as matrix, the circular fine steel pipe of telescope structure and blank pipe combination array, by combination both, realize that inner repeatedly sound reflecting absorbs and compound on sound insulation function and sound absorption function both, realize simultaneously both compound at high frequency section and low frequency section sound insulation function, prepare at full rate Duan Jun and possess good sound insulation property, and have the compound sound absorption structural material of better sound absorbing capabilities concurrently, often poor this specific rule of defening effect of sound-absorbing material has been broken in its appearance.
Summary of the invention
The object of the present invention is to provide a kind of occupied space pipe combination array that sound insulation has both/polyurathamc composite construction of inhaling, by the circular fine steel pipe of telescope structure and blank pipe combination array, prepare at full rate Duan Jun and possess good sound insulation property, and have the compound sound absorption structural material of better sound absorbing capabilities concurrently
The object of the present invention is achieved like this, it mainly embeds and extracts out by laying by fine steel pipe the occupied space pipe combination array that forms in the little foaming process of polyurethane resin, make polyurethane foam material and occupied space pipe combination array realize being compounded to form composite construction, and the caliber by occupied space pipe in the control combination array and tube pitch and stringing array structure significantly promote the sound insulation property of little polyurathamc sound-absorbing material, realize the compound of sound absorbing capabilities and sound insulation property, prepare the occupied space pipe combination array inhaling sound insulation and have both/polyurathamc sandwich.
Another object of the present invention is to provide a kind of preparation method who utilizes occupied space pipe combination array modified foaming sound-absorbing porous material preparation to inhale the composite construction that sound insulation has both.
For realizing the purpose of above invention, the present invention has mainly adopted following technical scheme: it is that 1:1 foams that the present invention selects soft section of polyurethane foam component (A component) and hard section (B component) proportioning, blowing temperature is 70 ℃, and foamed time is 30 minutes, and the curing time is 12 hours.In the present invention in occupied space pipe combination array real pipe select stainless steel 304 material steel pipe and overcoat hollow fiber damping material thin layer (also can not overlapping when oise insulation factor is less demanding), real pipe also can be for other material tubules as the plastic tubes such as ABS, PVC, the metal tubes such as lead pipe, aluminum pipe.The realization of occupied space pipe combination array structure is by evenly smearing vaseline at the micro-fine steel tube-surface in the stringing process, getting final product according to the structure reservation embedding of pipe array or the corresponding fine steel pipe of finding time after foaming is completed.The present invention's design is take the polyurethane resin micro-foaming material as matrix, the circular fine steel pipe of telescope structure and blank pipe combination array, combination both impels the transmission direction of sound wave in material to change, absorb at the sudden change generation Multi reflection of material internal due to acoustic impedance, thereby the friction that has increased sound wave and hole wall has improved the sound absorbing capabilities of material, occupied space pipe combination array forms scattering object in material simultaneously, it produces resonance on every side under the excitation of sound wave, and make sound wave be difficult to continue transmission with incidence wave generation interaction, and then increase the oise insulation factor of material.
By being controlled, caliber, tube pitch and occupied space pipe mixing stringing array structure reach the optimal acoustic performance.Greater than 10:1, the occupied space pipe combination array structure of laying is rectangular array to the thickness of this composite construction with occupied space pipe caliber ratio, and the cloth form of tubes is that single real pipe adds two evacuated tube, and tube pitch is 2～3 times of occupied space pipe caliber.When not requiring the above oise insulation factor of 30dB (A), can manage in fact and all adopt the blank pipe array.
Above-mentioned composite preparation process is as follows:
Get two thick 1mm, length and width are the 1000*40mm steel plate, the corresponding punched-plate of preparation punches on steel plate according to the stringing array structure, then be punctured in the middle of two punched-plates after required tube-surface evenly being smeared vaseline, consist of corresponding supporting construction, and be placed in foaming mould, foaming mould inner evenly smearing release agent or paving poly tetrafluoroethylene in advance.The present invention for ease of experiment, selects the small size mould to test in experimentation, and high 250mm, 250mm, the 40mm of being respectively of length and width selects 250mm*40mm small size rigid plastic sheet to make punched-plate.
The hard hard section of section of soft section of polyurethane foam (A component) and polyurethane foam (B component) is placed in two containers with the mass ratio of 1:1, then the B component is joined in the A component and rapid stirring even, pour into fast when occurring milky foaming sign after 8 ~ 10 seconds in the mould of deployment tube array, cover mold panel, and be clipped in Corner Strapped with 4 G types, be placed in 70 ℃ of baking ovens.After 30min foaming finishes, be placed in the cooling rear demoulding of natural environment, then occupied space pipe combination array structure keeps and embeds or the corresponding stay pipe of finding time can obtain the occupied space pipe combination array that this kind suction sound insulation has both/polyurathamc composite construction according to the rules.
Advantage of the present invention is: this structural material is adapted to the compound sound insulating structure sandwich layer such as non-bearing building partition, interior trim, traffic sound barrier, plant equipment sound absorption member and uses, have that quality is frivolous, the sound absorption function admirable, preparation is simple, cost is low, can increase building floor area ratio and reduce the advantages such as building bearing, have a extensive future.
Description of drawings
Fig. 1 is the cross-sectional structure schematic diagram of material of the present invention.
Pipe array supporter three-dimensional effect diagram in material when Fig. 2 is processing and forming of the present invention.
Fig. 3 is each frequency range acoustic absorptivity variation diagram of core structure third-octave of embodiments of the invention.
Fig. 4 is each frequency range oise insulation factor variation diagram of embodiments of the invention core structure third-octave.Polyurethane matrix 2, real pipe 3, tube pitch 4, blank pipe 5, steel pipe 6, punched-plate in the drawings 1.
The specific embodiment
Below in conjunction with example, the present invention is described in further detail
As shown in Figure 1 and Figure 2, this example is chosen little exemplar (size: 200mm * 200mm * 40mm) is produced and is example, can be according to requiring to prepare the corresponding size product in practical engineering application.In example, mould is stainless steel rectangular boxlike mould, is of a size of 200mm * 200mm * 40mm, with after the clean also oven dry of mould cleaning, is coated with last layer vaseline as releasing agent on mold bottom and side perimeters and panel before foaming.in example, occupied space pipe combination array supporting construction is selected stainless steel 304 material steel pipe (5), caliber is 4mm, thickness of pipe wall is 0.5mm, the cloth form of tubes is that single steel pipe adds three row's rectangular tube formation that two evacuated tube consist of, tube pitch (3) transverse and longitudinal is 2 ~ 3 times of 11.3mm(caliber), single steel pipe (5) is laid on downward first row from punched-plate (6) upper surface, blank pipe is arranged in second row and the 3rd row, and real pipe (2) overcoat hollow fiber damping material of nitrile butadiene rubber thin layer, steel pipe (5) surface uniform in blank pipe (4) position is smeared vaseline, then prop up according to the rectangular array structure and be located in mould, tube pitch (3) transverse and longitudinal is 11.3mm.
The prepolymer of polyurethane matrix (1) configures by a certain percentage, split A, B two components, wherein each composition percentage mass ratio of A component is: 95% PPG YD-1050,2% pair of dimethylaminoethyl ether (A-1), 1% dimethylethanolamine (DMEA), 1% atoleine, 0.5%OR-501,0.5 silicone oil L-6900, the B component is liquefied mdi.Take A, each 70g of B component.
Load weighted B component is joined in the beaker of A component and high-speed stirred, when milky white phenomenon occurring after 8 ~ 10s, rapidly polyurethane matrix (1) is poured in foaming mould, and cover mold panel, send into the baking oven foaming after fixing four jiaos with 4 G type fixtures, oven temperature arranges 70 ℃, and the 30Min post-foaming is completed, sample is taken out from baking oven, be placed in natural environment and be cooled to the demoulding after room temperature.
Then the corresponding steel pipe of occupied space pipe combination array structure blank pipe position extraction of determining according to design can obtain this example.
Be the acoustical behavior at the further test material in laboratory, need after in sample, all stay pipes are found time, the cutting foaming body, be processed into diameter and be respectively each of the nahlock that 100mm and 30mm, thickness are 40mm, and again embed the equal length steel pipe according to occupied space pipe combination array structure in corresponding pore and can obtain specimen.
The Double-channel impedance pipe sound absorption measuring system of Beijing Sheng Wang Acoustic-Electric's exploitation is adopted in the acoustical behavior test, selects sound absorption test module transfer function method (GB) to measure, and sound pressure level adopts the A weighted, and data record is selected the third-octave record.The mean transmission loss that does not add after measured the present embodiment structure of decorative layer is 32.9dB (A), the present embodiment structure is seen respectively Fig. 3 and Fig. 4 at sound absorbing capabilities and the sound insulation property of different frequency section, surface density adopts gravimetric detemination, and its centre plane density is 6.1kg/m
2
Claims (3)
1. inhale the occupied space pipe combination array that sound insulation has both/polyurathamc composite construction for one kind, it is characterized in that: this composite construction is mainly embed and extract the occupied space pipe combination array that forms out by laying in the little foaming process of polyurethane resin by fine steel pipe, thereby make polyurethane foam material and occupied space pipe combination array forming composite structure, and the caliber by controlling occupied space pipe in material and tube pitch and occupied space pipe mixing stringing array structure significantly promote the sound insulation property of little polyurathamc sound-absorbing material.
2. a kind of occupied space pipe combination array that sound insulation has both/polyurathamc composite construction of inhaling according to claim 1, in occupied space pipe combination array, real pipe is selected stainless steel 304 material steel pipe and overcoat hollow fiber damping material thin layer, real pipe also can be for other material tubules as the plastic tubes such as ABS, PVC, the metal tubes such as lead pipe, aluminum pipe.
3. a kind of occupied space pipe combination array that sound insulation has both/polyurathamc composite construction of inhaling according to claim 1, the thickness of this composite construction compares greater than 10:1 with occupied space pipe caliber, the occupied space pipe combination array structure of laying is rectangular array, the cloth form of tubes is that single real pipe adds two evacuated tube, and tube pitch is 2～3 times of occupied space pipe caliber.
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| Application Number | Priority Date | Filing Date | Title |
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| CN2013103001020A CN103381673A (en) | 2013-07-17 | 2013-07-17 | Sound absorption and insulation foam polyurethane composite structure with combination arrays of soild pipes and hollow pipes |
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| CN2013103001020A CN103381673A (en) | 2013-07-17 | 2013-07-17 | Sound absorption and insulation foam polyurethane composite structure with combination arrays of soild pipes and hollow pipes |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106564238A (en) * | 2016-11-03 | 2017-04-19 | 广州凯耀资产管理有限公司 | Multilayer composite sound insulation board material for buildings and preparation method and application thereof |
| CN106881923A (en) * | 2015-12-16 | 2017-06-23 | 中国人民解放军空军工程大学 | A kind of preparation method of complex intensifying type foam metal battenboard |
| CN106881563A (en) * | 2015-12-16 | 2017-06-23 | 中国人民解放军空军工程大学 | A kind of preparation method of foamed aluminium-metal tube composite |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
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| GB1451649A (en) * | 1973-01-24 | 1976-10-06 | ||
| US4753841A (en) * | 1985-11-19 | 1988-06-28 | Noel, Marquet & Cie. S.A. | Air-borne and footstep noise insulating panels of synthetic resin foam for floating plaster floors or floating wooden floors |
| JPH07293783A (en) * | 1994-04-20 | 1995-11-10 | Fujitsu General Ltd | Heat insulating material and heat insulating box using it |
| CN102407615A (en) * | 2011-07-29 | 2012-04-11 | 同济大学 | Light reinforced foam board and preparation method thereof |
| CN102639795A (en) * | 2009-10-21 | 2012-08-15 | 贝尔马克斯声学有限公司 | Acoustic panel |
-
2013
- 2013-07-17 CN CN2013103001020A patent/CN103381673A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB1451649A (en) * | 1973-01-24 | 1976-10-06 | ||
| US4753841A (en) * | 1985-11-19 | 1988-06-28 | Noel, Marquet & Cie. S.A. | Air-borne and footstep noise insulating panels of synthetic resin foam for floating plaster floors or floating wooden floors |
| JPH07293783A (en) * | 1994-04-20 | 1995-11-10 | Fujitsu General Ltd | Heat insulating material and heat insulating box using it |
| CN102639795A (en) * | 2009-10-21 | 2012-08-15 | 贝尔马克斯声学有限公司 | Acoustic panel |
| CN102407615A (en) * | 2011-07-29 | 2012-04-11 | 同济大学 | Light reinforced foam board and preparation method thereof |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106881923A (en) * | 2015-12-16 | 2017-06-23 | 中国人民解放军空军工程大学 | A kind of preparation method of complex intensifying type foam metal battenboard |
| CN106881563A (en) * | 2015-12-16 | 2017-06-23 | 中国人民解放军空军工程大学 | A kind of preparation method of foamed aluminium-metal tube composite |
| CN106881923B (en) * | 2015-12-16 | 2018-09-04 | 中国人民解放军空军工程大学 | A kind of preparation method of complex intensifying type foam metal battenboard |
| CN106564238A (en) * | 2016-11-03 | 2017-04-19 | 广州凯耀资产管理有限公司 | Multilayer composite sound insulation board material for buildings and preparation method and application thereof |
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Application publication date: 20131106 |