利用粘弹性床垫废弃物生产隔音材料

Decis. Sci. Pub Date : 2022-12-09 DOI:10.3390/sci4040048
J. Conesa, Eugenio Tomás
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引用次数: 0

摘要

在这项工作中,从床垫废物中制造压块,并检查所生产材料的声学特性。成型煤的温度在170到185°C之间,使用粘弹性记忆泡沫(VMF)的废料,施加25到75 MPa的压力。然后,测量材料的性能,如体积密度、孔隙率和压实系数。然后,对材料进行测试,以确定不同频率下的减声指数。这是通过一个自制的系统完成的,在这个系统中,使用MATLAB®软件(Mathworks, Natick, MA, USA)进行信号计算,比较床垫型煤存在和不存在时的声信号。结果还与一种参考隔声材料进行了比较。实验表明,从床垫废料中产生的材料能够以类似于商业材料的方式降低声音强度。事实上,与参考绝缘材料相比,制备型煤的减少指数在最影响人耳的频率上要高得多。
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Production of Acoustic Insulating Materials from Viscoelastic Mattress Waste
In this work, briquettes from mattress waste are manufactured and the acoustic properties of the materials produced are checked. Briquettes are made at temperatures between 170 and 185 °C using waste from viscoelastic memory foam (VMF) and applying pressures between 25 and 75 MPa. Later, the properties of the materials such as their bulk density, porosity, and compaction factor are measured. Afterwards, the materials are subjected to a test to determine the sound reduction index at different frequencies. This is completed with a home-made system in which the acoustic signal is compared in the presence and absence of the mattress briquettes using MATLAB® software (Mathworks, Natick, MA, USA) for signal computing. The results are also compared with a reference acoustic insulation material. The runs show that the materials produced from mattress waste are able to reduce the intensity of sound in a similar way to commercial materials. In fact, reduction indices with prepared briquettes are much higher in the frequencies that most affect the human ear, compared to a reference insulating material.
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