聚氨酯制备总质量对其声学特征参数的影响分析
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摘要
研究了聚氨酯(PU)的制备质量(密度)对其声学特征参数的影响,为建立制备条件与其声学特征参数之间的关系奠定基础。首先制备了相同温度,相同配比,不同制备原料质量的PU泡沫,然后利用搭建的一个能够快速测试多孔材料特征参数的试验台测试不同泡沫的吸声性能及声学特征参数,如孔隙率、流阻、曲率和特征常数等,分析了原料质量对PU声学特征参数的影响。结果表明,制备质量对PU的吸声性能具有重要影响,质量太大或者太小都会降低PU的吸声性能,原料质量为42g的PU泡沫表现出最好的吸声性能,流阻先降低后增加,孔隙率在48g时最大。
The influence of prepared quality(density) of polyurethane foam(PU) on the acoustic parameters was studied;the relationship between the preparation conditions and acoustic characteristic parameters was established. Firstly,PU foams with the same temperature,same ratio and different total mass were prepared;and then the sound absorption coefficients and acoustic parameters, such flow resistance, porosity, tortuosity and characteristic parameters were tested with the self-made test bench which the characteristic parameters of porous materials can be quickly tested. The results revealed that the prepare mass had an important influence on the sound absorption performance of PU. It would reduce the sound absorption properties of PU if the quality was too big or too small. PU with total quality of 42 g showed the best sound absorption performance with the quality increases,the flow resistance was decreased firstly and then increased;the porosity was greatest at total quality of 48 g.
The influence of prepared quality(density) of polyurethane foam(PU) on the acoustic parameters was studied;the relationship between the preparation conditions and acoustic characteristic parameters was established. Firstly,PU foams with the same temperature,same ratio and different total mass were prepared;and then the sound absorption coefficients and acoustic parameters, such flow resistance, porosity, tortuosity and characteristic parameters were tested with the self-made test bench which the characteristic parameters of porous materials can be quickly tested. The results revealed that the prepare mass had an important influence on the sound absorption performance of PU. It would reduce the sound absorption properties of PU if the quality was too big or too small. PU with total quality of 42 g showed the best sound absorption performance with the quality increases,the flow resistance was decreased firstly and then increased;the porosity was greatest at total quality of 48 g.
引文
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[4]罗容连.聚氨酯多孔材料配方及其吸声性能分析[J].健康前沿,2017,26(05):12-17.
[5] Murphy J G,Rogerson G A. A method to model simple tension experiments using finite elasticity theory with an application to some polyurethane foams[J]. International Journal of Engineering Science,2002,40(05):499-510.
[6] Dmitrienko S G,Pyatkova L N,Zolotov Y A.Sorption of ion associates on polyurethane foams and its application to sorption–spectroscopic and test methods of analysis[J]. Journal of Analytical Chemistry,2002,57(10):875-881.
[7]秦清明,贾一峰,贾志达.减震,吸声,隔声复合材料及其在工程中的应用[J].噪声与振动控制,1994(04):2-7.
[8] Yang T L,Chiang D M,Chen R. Development of a novel porous laminated composite material for high sound absorption[J]. Journal of Vibration and Control,2001,7(05):675-698.
[9]蔡贝克.聚氨酯发泡材料的制备及吸声结构优化[D].哈尔滨:哈尔滨工业大学,2016.
[10] Liu Z,Zhan J,Fard M,et al. Acoustic properties of a porous polycarbonate material produced by additive manufacturing[J].Materials Letters,2016,181:296-299.
[11] Gwon JG,Kim SK,Kim JH. Sound absorption behavior of flexible polyurethane foams with distinct cellular structures[J].Materials&Design Volume,2016,89:448-454.
[12] Ru J,Kong B,Liu Y,et al. Microstructure and sound absorption of porous copper prepared by resin curing and foaming method[J].Materials Letters,2015,139:318-321.
[2] Ramesh S,Tharanikkarasu K,Mahesh G N,et al.Synthesis,physicochemical characterization,and applications of polyurethane ionomers:a review[J].Reviews in macromolecular chemistry and physics,1998,38(03):481-509.
[3] Tsai H C,Hong P D,Yen M S. Preparation and physical properties of mdea-based polyurethane cationomers and their application to textile coatings[J].Textile Research Journal,2007,77(09):710-720.
[4]罗容连.聚氨酯多孔材料配方及其吸声性能分析[J].健康前沿,2017,26(05):12-17.
[5] Murphy J G,Rogerson G A. A method to model simple tension experiments using finite elasticity theory with an application to some polyurethane foams[J]. International Journal of Engineering Science,2002,40(05):499-510.
[6] Dmitrienko S G,Pyatkova L N,Zolotov Y A.Sorption of ion associates on polyurethane foams and its application to sorption–spectroscopic and test methods of analysis[J]. Journal of Analytical Chemistry,2002,57(10):875-881.
[7]秦清明,贾一峰,贾志达.减震,吸声,隔声复合材料及其在工程中的应用[J].噪声与振动控制,1994(04):2-7.
[8] Yang T L,Chiang D M,Chen R. Development of a novel porous laminated composite material for high sound absorption[J]. Journal of Vibration and Control,2001,7(05):675-698.
[9]蔡贝克.聚氨酯发泡材料的制备及吸声结构优化[D].哈尔滨:哈尔滨工业大学,2016.
[10] Liu Z,Zhan J,Fard M,et al. Acoustic properties of a porous polycarbonate material produced by additive manufacturing[J].Materials Letters,2016,181:296-299.
[11] Gwon JG,Kim SK,Kim JH. Sound absorption behavior of flexible polyurethane foams with distinct cellular structures[J].Materials&Design Volume,2016,89:448-454.
[12] Ru J,Kong B,Liu Y,et al. Microstructure and sound absorption of porous copper prepared by resin curing and foaming method[J].Materials Letters,2015,139:318-321.