有机硅改性聚氨酯海绵的吸声性能分析
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摘要
为了改善聚氨酯海绵的吸声特性,采用有机硅改性的方法对其进行了研究。在制备的过程中,通过添加有机硅对聚氨酯海绵进行改性,对比了改性后与非改性材料的吸声性能,探究了其随频率变化的关系,测量并分析材料和空气层不同厚度时的吸声系数。通过实验深入探究了该材料对不同频段噪声吸声能力的差异以及材料和空气层不同厚度对材料吸声系数的影响,为该材料在汽车中的应用提供了指导。
In order to improve the sound absorption characteristics of polyurethane foam,the silicone modified method was studied. The polyurethane sponge was modified by adding silicone,and the sound absorption properties of the modified and non-modified materials were compared. Their relationship with frequency was explored,and the sound absorption coefficient was measured and analyzed at different thicknesses of the material and the air layer.Through experiments,the material's difference in sound absorption ability of different frequency bands and the influence of different thicknesses of material and air layer on the sound absorption coefficient of the material were thoroughly explored,which provided guiding significance for the application of this material in automobiles.
In order to improve the sound absorption characteristics of polyurethane foam,the silicone modified method was studied. The polyurethane sponge was modified by adding silicone,and the sound absorption properties of the modified and non-modified materials were compared. Their relationship with frequency was explored,and the sound absorption coefficient was measured and analyzed at different thicknesses of the material and the air layer.Through experiments,the material's difference in sound absorption ability of different frequency bands and the influence of different thicknesses of material and air layer on the sound absorption coefficient of the material were thoroughly explored,which provided guiding significance for the application of this material in automobiles.
引文
1 Shuib R K,Pickering K L.Investigation and modelling of damping mechanisms of magnetorheological elastomers.Journal of Applied Polymer Science,2016;133(13):43-47
2张胜强,孙凌玉.磁敏弹性体微结构的扫描电镜表征原理剖析及前处理方法优化.中国测试,2016;42(9):1-5Zhang Shengqiang,Sun Lingyu.Analysis of the characterization of magnetoelastic microstructures by scanning electron microscopy and optimization of pretreatment methods.China Test,2016;42(9):1-5
3 Yang J,Suna S S,Tiana T F,et al.MRE isolator for suppression of building vibrations under seismic events.Mechanical Systems and Signal Processing.2016;70(10):811-820
4 Dragonetti R,Opdam R,Napolitano M,et al.Effects of the wave front on the acoustic reflection coefficient.Acta Acustica United with Acustica,2016;102(4):675-687
5 Lin W L,Bi C X,Opdam R,et al.Performance of spatial windows in the spatial Fourier transform technique for the angle-dependent reflection factor measurement.Acta Acustica United with Acustica,2017;189(9):334-341
6 Brand2o E,Flesch R C,Lenzi A,et al.Estimation of pressure-particle velocity impedance measurement uncertainty using the monte carlo method.The Journal of the Acoustical Society of America,2011;103(2):349-353
7 Opdam R,De Vries D,Vorlander M.Angle-dependent reflection factor measurements of finite samples with an edge diffraction correction.The Proceedings of Inter-Noise 2015 Conference.San Francisco:Internation Commission on Acoustics,2015:67-73
8 Alvarez J,Jacobsen F.In-situ measurements of the complex acoustic impedance of porous materials.The Proceedings of Inter-Noise 2007Conference.Istanbul:Internation Commission on Acoustics,2007:59-64
9 Lin W L,Bi C X,Zhang Y B.Measurement of reflection factor at oblique incidence with pressure-velocity transducers.Noise Control Engineering Journal,2016;64(3):379-387
10 Nabil H,Ismail H,Azura A R.Properties of natural rubber/recycled ethylene-propylene-diene rubber blends prepared using various vulcanizing systems.Iranian Polymer Journal,2014;23(1):37-45
11 Dragonetti R,Romano R A.Errors when assuming locally reacting boundary condition in the estimation of the surface acoustic impedance.Applied Acoustics,2017;115(6):121-130
2张胜强,孙凌玉.磁敏弹性体微结构的扫描电镜表征原理剖析及前处理方法优化.中国测试,2016;42(9):1-5Zhang Shengqiang,Sun Lingyu.Analysis of the characterization of magnetoelastic microstructures by scanning electron microscopy and optimization of pretreatment methods.China Test,2016;42(9):1-5
3 Yang J,Suna S S,Tiana T F,et al.MRE isolator for suppression of building vibrations under seismic events.Mechanical Systems and Signal Processing.2016;70(10):811-820
4 Dragonetti R,Opdam R,Napolitano M,et al.Effects of the wave front on the acoustic reflection coefficient.Acta Acustica United with Acustica,2016;102(4):675-687
5 Lin W L,Bi C X,Opdam R,et al.Performance of spatial windows in the spatial Fourier transform technique for the angle-dependent reflection factor measurement.Acta Acustica United with Acustica,2017;189(9):334-341
6 Brand2o E,Flesch R C,Lenzi A,et al.Estimation of pressure-particle velocity impedance measurement uncertainty using the monte carlo method.The Journal of the Acoustical Society of America,2011;103(2):349-353
7 Opdam R,De Vries D,Vorlander M.Angle-dependent reflection factor measurements of finite samples with an edge diffraction correction.The Proceedings of Inter-Noise 2015 Conference.San Francisco:Internation Commission on Acoustics,2015:67-73
8 Alvarez J,Jacobsen F.In-situ measurements of the complex acoustic impedance of porous materials.The Proceedings of Inter-Noise 2007Conference.Istanbul:Internation Commission on Acoustics,2007:59-64
9 Lin W L,Bi C X,Zhang Y B.Measurement of reflection factor at oblique incidence with pressure-velocity transducers.Noise Control Engineering Journal,2016;64(3):379-387
10 Nabil H,Ismail H,Azura A R.Properties of natural rubber/recycled ethylene-propylene-diene rubber blends prepared using various vulcanizing systems.Iranian Polymer Journal,2014;23(1):37-45
11 Dragonetti R,Romano R A.Errors when assuming locally reacting boundary condition in the estimation of the surface acoustic impedance.Applied Acoustics,2017;115(6):121-130