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Preparation and acoustic properties of a tung oleic acid‐based polyurethane foam and its stratified structure
Polymers for Advanced Technologies ( IF 3.4 ) Pub Date : 2020-09-13 , DOI: 10.1002/pat.5026
Yangjie Ji 1 , Shuming Chen 1
Affiliation  

Bio‐based polyurethane foam, a new green environmental material, has attracted more and more attention of people. In this study, the tung oleic acid‐based polyurethane (TOPUF) had been prepared using one‐step method. Characterization of the polyurethane foams were carried out by SEM and Fourier transform infrared. The cell morphology, acoustic, and mechanical performance of TOPUF with different contents of tung oleic acid‐based polyols (TOAP) were studied and compared with that of a pure petroleum‐based polyurethane foam. In addition, the effects of thickness ratio of layers on the acoustic performance of the double‐layer composite polyurethane foam (DPUF) were also studied by means of theoretical model and experiment. The results illustrate that TOPUF shows a high absorption performance in the frequency range from 100 to 500 Hz and sound insulation performance in the range from 100 to 6300 Hz. The average sound absorption coefficient of TOPUF is 0.505, and the average transmission loss is 18.818 dB in this case. Furthermore, the average sound absorption coefficient and average transmission loss of DPUFs are 0.545 and 14.528 dB using multilayer structure. Overall, TOPUF has excellent acoustic properties and prodigious application prospects.

中文翻译:

桐油酸基聚氨酯泡沫的制备,声学性能及其分层结构

生物基聚氨酯泡沫是一种新型的绿色环保材料,已引起人们越来越多的关注。在这项研究中,使用一步法制备了基于桐油酸的聚氨酯(TOPUF)。聚氨酯泡沫的表征通过SEM和傅立叶变换红外进行。研究了不同含量的基于桐油酸的多元醇(TOAP)的TOPUF的细胞形态,声学和机械性能,并将其与纯石油基聚氨酯泡沫进行了比较。此外,还通过理论模型和实验研究了层厚比对双层复合聚氨酯泡沫(DPUF)声学性能的影响。结果表明,TOPUF在100到500 Hz的频率范围内显示出高吸收性能,在100到6300 Hz的范围内显示出隔音性能。在这种情况下,TOPUF的平均吸声系数为0.505,平均传输损耗为18.818 dB。此外,使用多层结构,DPUF的平均吸声系数和平均传输损耗为0.545和14.528 dB。总体而言,TOPUF具有出色的声学性能和广阔的应用前景。
更新日期:2020-11-04
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