CN103147520A - Method for fabricating light sound absorption and insulation core board with waste slag powder modified micro-foam grains - Google Patents
Method for fabricating light sound absorption and insulation core board with waste slag powder modified micro-foam grains Download PDFInfo
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- CN103147520A CN103147520A CN2013100805311A CN201310080531A CN103147520A CN 103147520 A CN103147520 A CN 103147520A CN 2013100805311 A CN2013100805311 A CN 2013100805311A CN 201310080531 A CN201310080531 A CN 201310080531A CN 103147520 A CN103147520 A CN 103147520A
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02W—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATER TREATMENT OR WASTE MANAGEMENT
- Y02W30/00—Technologies for solid waste management
- Y02W30/50—Reuse, recycling or recovery technologies
- Y02W30/91—Use of waste materials as fillers for mortars or concrete
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Abstract
The invention relates to a method for fabricating a light sound absorption and insulation core board with waste slag powder modified micro-foam grains. With the adoption of density and acoustic impedance of the waste slag powder modified micro-foam grain added during micro-forming of polyurethane resin, the appropriate aperture and porosity of a micro-foaming material and the additive amount of waste slag powder are controlled to greatly improve sound insulation of the micro-foaming material with a sound absorption property, so that the light sound absorption and insulation core board with sound absorptivity and sound insulation ability is fabricated. The conventional concept that the traditional sound absorption material are poor in sound insulation effect generally is broken through, and the light sound absorption and insulation core board is suitable for composite sound insulation structures such as building walls in non-bearing structures, floors, interior decoration, and traffic sound barriers. The method has the advantages of waste recycling, high-rise building bearing reduction, increased indoor plot ratio, good sound absorption and insulation performances, low cost and the like, and has a wide application prospect.
Description
Technical field
The present invention relates to a kind of method that lightweight is inhaled the sound insulation central layer for preparing, relate in particular to a kind of method for preparing lightweight suction sound insulation central layer with the little foaming body grain of abandoned mine ground-slag modification.
Background technology
Foam material is as a class acoustical material commonly used in present field of noise control, and its lightweight, easily processing carrying, good acoustical behavior are widely used in fields such as Sound insulation for building body of wall, interior trim finishing, road traffic, military affairs.In the various acoustics foam materials of having developed, mainly concentrate in the research of acoustic foam body material and sound insulation foam-body material.Traditional acoustic foam body material will obtain sound absorbing capabilities preferably, General Requirements has softness, porous (perforate) and forms the IPN network structure, rub with the matrix grain in hole by air, and because of the viscous effect of air and matrix material, acoustic energy is absorbed with the form of heat energy.Traditional sound insulation foam-body material requires material itself to have certain surface density, porous and aperture sealing, the propagation of blocking-up acoustic energy in the foam material.Therefore from sound absorption and sound insulation and noise reducing theory, acoustic foam body and sound insulation foams acoustical behavior are widely different, and the good foam-body material defening effect of tradition sound absorption is relatively poor, and the foam-body material of sound insulation property excellence does not possess sound absorbing capabilities preferably.No matter be sound absorption reduction or sound insulation and noise reducing, from the comprehensive effectiveness angle of noise reduction, have simultaneously preferably the foam material of sound absorbing capabilities and sound insulation property and have beyond doubt great exploitation and be worth.Have based on this, the present invention utilizes abandoned mine ground-slag modification little foaming body grain density and acoustic impedance, significantly improve the sound insulation factor of the micro-foaming material with sound absorbing capabilities by granularity and the addition of controlling its suitable aperture, porosity and abandoned mine ground-slag, inhale the sound insulation central layer thereby make the lightweight that has simultaneously sound absorption and sound-insulation capability.In addition, all have very great development from economy or environmental angle and be worth adding of abandoned mine slag.
Summary of the invention
Technical problem to be solved by this invention is the present situation for prior art, a kind of abandoned mine ground-slag modification little foaming body grain density and acoustic impedance utilized is provided, significantly improve the sound insulation factor of the micro-foaming material with sound absorbing capabilities by granularity and the addition of controlling its suitable aperture, porosity and abandoned mine ground-slag, inhale the sound insulation central layer thereby make the lightweight that has simultaneously sound absorption and sound-insulation capability.
Another technical problem to be solved by this invention is the present situation for prior art, provides the little foaming body grain of a kind of abandoned mine ground-slag modification to prepare the method that lightweight is inhaled the sound insulation central layer
The purpose of foregoing invention is achieved through the following technical solutions:
The polyurethane perforated foams utilizes the good viscoplasticity of material itself and porous, the vibration that the characteristics that Kong Yukong is interconnected produce sound wave causes the air movement in aperture or gap, cause the friction with hole wall, effect due to friction and viscous force makes acoustic energy be converted into heat energy and then makes acoustic attenuation.
The abandoned mine ground-slag add rigidity and the density that has not only improved the foaming body grain, thereby improve the foam sound insulation factor, add the absorption that the reflection of strong sound wave in the foam material further promoted acoustic energy, reached the purpose of the comprehensive Noise Reduction performance of sound absorption and sound insulation.In addition, can also widen the material acoustics frequency range adding of abandoned mine ground-slag.
Reach the optimal acoustic performance by the control to foam structure and abandoned mine ground-slag content, particle diameter.Optimization control parameter is void content 70%-85%, and pore size is 530 um-750um, and than being 3:10, abandoned mine ground-slag particle diameter is 120 orders to the abandoned mine ground-slag with polyurethane prepolymer content.
The preparation method of above-mentioned novel multi-layer light-weight sound insulating board is by following step:
3. join the blending ingredients of B and C in the A component and rapid stirring even, in 10-15s after, pour into fast in foaming mould when milky white foaming sign occurring, with the little scoop mixture that fiddles with, so that bottom its Quick uniform distributed die, build mold panel, and fix with G type fixture.
4. after 45min foaming finishes, be placed in the cooling rear demoulding of natural environment and can obtain thisly preparing lightweight suction sound insulation central layer with the little foaming body grain of abandoned mine ground-slag modification.
Technique effect of the present invention is: make the lightweight that has simultaneously sound absorption and sound-insulation capability and inhale the sound insulation central layer, broken through the often poor conventional conception of defening effect of traditional sound absorption material, the compound sound insulating structure such as construction wall, floor, interior trim, traffic sound barrier that is suitable for non bearing structure uses.Have changing rejected material to useful resource, reduce the highrise building load-bearing and improve the chamber volume rate, the sound absorption performance is good and low cost and other advantages, have a extensive future.
Description of drawings
Fig. 1 is that lightweight is inhaled each frequency band sound absorption coefficient of sound insulation core material third-octave figure.
Fig. 2 is that lightweight is inhaled each frequency band transmission loss of sound insulation core material third-octave figure.
The specific embodiment
Below in conjunction with example, the present invention is described in further detail
Case study on implementation
(area 10cm * 10cm * 2cm) produce as example is applied in Practical Project and can or can customizes specific dimensions lightweight suction sound insulation central layer according to requirement of engineering with reference to ratio this example with little exemplar.
In example, stainless steel mould used is of a size of 10.5cm * 10.5cm * 2cm, first polyurethane prepolymer is configured by a certain percentage, split A, B two components, the A component is PPG, catalyzer, blowing agent, stabilizing agent, organosilicon wet goods, the B component is liquefied mdi, and take particle diameter as 120 order abandoned mine ground-slags as the C component.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.Claim to remove A component 40g, B component 40g, C component 24g.
after sending oven for drying with the mould washes clean, be coated with last layer vaseline as demoulding cream on mold bottom and side perimeters and panel, load weighted C component is first added the B component, after mixing with high speed agitator, join in the beaker of A component and again high-speed stirred mix, when milky white phenomenon occurring behind 10-15s clock left and right, multiple spot is poured into rapidly in foaming mould several times, stirring with scuppit makes it be uniformly distributed in mold bottom, and cover mold panel, send into the baking oven foaming after fixing with G type fixture, oven temperature arranges 65 ℃, the 45Min post-foaming is completed, sample is taken out from baking oven, after being placed in natural environment and being cooled to room temperature, the demoulding is taken out and is got final product.
Be the further acoustical behavior of test foaming body central layer, need that diameter is processed in the sample cutting and be respectively respectively one of the testing sample that 10cm and 3cm thickness be all 2cm, with remaining testing of materials void content and pore size.
The impedance tube material sound absorption measuring system by Beijing Sheng Wang Acoustic-Electric's exploitation is adopted in the acoustical behavior test, sound absorption coefficient and transmission loss during difference specimen third-octave.
Measure suction sound insulation central layer void content 83% of the present invention through gravimetric method and PORE SIZE APPARATUS FOR, aperture 610um, surface density is 2.51kg/m
2, be 0.418 through the average sound absorption coefficient of impedance tube material sound absorption measuring system specimen, average transmission loss is 33.445dB, when inhaling sound insulation central layer third-octave, accompanying drawing 1 and accompanying drawing 2 are seen respectively in each frequency band sound absorption coefficient and transmission loss.
Claims (3)
1. one kind prepares with the little foaming body grain of abandoned mine ground-slag modification the method that lightweight is inhaled the sound insulation central layer, it is characterized in that: dosing granularity when this lightweight is inhaled the sound insulation central layer mainly by the little foaming of polyurethane resin is 120 purpose abandoned mine ground-slag modification little foaming body grain density and acoustic impedances, by controlling the addition of its suitable aperture, porosity and abandoned mine ground-slag, significantly improve the sound insulation factor of the micro-foaming material with sound absorbing capabilities, inhale the sound insulation central layer thereby make the lightweight that has simultaneously sound absorption and sound-insulation capability.
2. according to a kind of described method for preparing lightweight suction sound insulation central layer with the little foaming body grain of abandoned mine ground-slag modification of claim 1, it is characterized in that the dump slag powder that adds is a kind of in copper mine tailings, Iron-ore Slag, furnace slag, plumbous mine tailings and zinc mine tailings, abandoned mine ground-slag and polyurethane prepolymer mass ratio are 3
:10.
3. according to a kind of described method for preparing lightweight suction sound insulation central layer with the little foaming body grain of abandoned mine ground-slag modification of claim 1, it is characterized in that the aperture of this lightweight suction sound insulation central layer is controlled between 530 um-750um, porosity is controlled at 70%-85%.
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| CN2013100805311A CN103147520A (en) | 2013-03-13 | 2013-03-13 | Method for fabricating light sound absorption and insulation core board with waste slag powder modified micro-foam grains |
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| CN2013100805311A CN103147520A (en) | 2013-03-13 | 2013-03-13 | Method for fabricating light sound absorption and insulation core board with waste slag powder modified micro-foam grains |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105859162A (en) * | 2015-01-19 | 2016-08-17 | 中国科学院过程工程研究所 | Method for producing sound-absorption material by leaching of slag and granulation of fine powder |
| CN106336246A (en) * | 2016-08-16 | 2017-01-18 | 仇颖莹 | Preparation method for expressway micropore low-frequency sound-absorption and sound-insulation board |
| 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 |
| CN106905689A (en) * | 2017-03-27 | 2017-06-30 | 芜湖锐华暖通科技有限公司 | A kind of MULTILAYER COMPOSITE mute drain pipe fitting |
| CN108516750A (en) * | 2018-06-08 | 2018-09-11 | 深圳市奇信建设集团股份有限公司 | Interior wall sound insulation putty and preparation method thereof |
| CN109897361A (en) * | 2018-12-29 | 2019-06-18 | 肇庆市珈旺环境技术研究院 | Modified polyurethane foam and preparation method and application thereof |
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| US20070209867A1 (en) * | 2006-03-08 | 2007-09-13 | Jin Suk Kim | Soundproof panel for impact sound insulation |
| CN101274834A (en) * | 2008-05-16 | 2008-10-01 | 杭州蓝保环境产业有限公司 | Cast stone sound absorbing board and preparation thereof |
| CN102206074A (en) * | 2011-04-20 | 2011-10-05 | 赵坚强 | Environment-friendly decorative, thermal-insulation, sound-insulation, fireproof, anticorrosion material product and manufacturing method thereof |
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| CN1318458A (en) * | 2001-02-23 | 2001-10-24 | 四川省和光高技术开发有限责任公司 | Production process of outdoor sound absorbing board |
| CN1472725A (en) * | 2003-06-27 | 2004-02-04 | 武汉理工大学 | High-efficiency paper base sound-absorbing material and preparation thereof |
| US20070209867A1 (en) * | 2006-03-08 | 2007-09-13 | Jin Suk Kim | Soundproof panel for impact sound insulation |
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Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105859162A (en) * | 2015-01-19 | 2016-08-17 | 中国科学院过程工程研究所 | Method for producing sound-absorption material by leaching of slag and granulation of fine powder |
| CN105859162B (en) * | 2015-01-19 | 2018-03-16 | 中国科学院过程工程研究所 | A kind of method for leaching slag fine powder granulation and preparing sound-absorbing material |
| CN106336246A (en) * | 2016-08-16 | 2017-01-18 | 仇颖莹 | Preparation method for expressway micropore low-frequency sound-absorption and sound-insulation board |
| 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 |
| CN106905689A (en) * | 2017-03-27 | 2017-06-30 | 芜湖锐华暖通科技有限公司 | A kind of MULTILAYER COMPOSITE mute drain pipe fitting |
| CN108516750A (en) * | 2018-06-08 | 2018-09-11 | 深圳市奇信建设集团股份有限公司 | Interior wall sound insulation putty and preparation method thereof |
| CN108516750B (en) * | 2018-06-08 | 2020-12-15 | 深圳市奇信集团股份有限公司 | Sound-insulating putty for interior wall and preparation method thereof |
| CN109897361A (en) * | 2018-12-29 | 2019-06-18 | 肇庆市珈旺环境技术研究院 | Modified polyurethane foam and preparation method and application thereof |
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Application publication date: 20130612 |