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使用回收塑料对开有孔材料进行可持续的声学定制。

A sustainable acoustic customization of open porous materials using recycled plastics.

机构信息

Faculty of Science and Technology, Free University of Bozen, 39100, Bolzano, Italy.

Department of Engineering and Architecture, University of Trieste, 34127, Trieste, Italy.

出版信息

Sci Rep. 2022 Jun 29;12(1):10955. doi: 10.1038/s41598-022-14009-z.

DOI:10.1038/s41598-022-14009-z
PMID:35768484
原文链接:https://pmc.ncbi.nlm.nih.gov/articles/PMC9242981/
Abstract

Foams are commonly used as sound absorbers and thermal insulators for many industrial and construction applications. The insulating materials market is currently dominated by inorganic fibres like glass and mineral wool, as well as plastic foams. However, worldwide plastics consumption produces huge amounts of waste, generating concerns about soil, air and especially seawater pollution. Hence, new methods for recycling marine microplastic litter according to cleaner production criteria are being sought. This paper presents a novel, sustainable and eco-friendly foamy material made of microplastic waste, namely polyethylene terephthalate (PET) and polystyrene (PS), incorporated into a bio-based matrix. Samples with different compositions were prepared and then characterized for sound absorption properties. Evidence is presented of very good acoustic performances and of how the acoustic characteristics of the end product can be customized using different microplastic content and type. This allows envisioning many industrial and civil applications for this novel open-cell material.

摘要

泡沫材料通常被用作许多工业和建筑应用的吸声和隔热材料。绝缘材料市场目前主要由无机纤维（如玻璃和矿棉）以及塑料泡沫主导。然而，全球塑料消费产生了大量的废物，引发了人们对土壤、空气，特别是海水污染的担忧。因此，人们正在根据清洁生产标准寻找回收海洋微塑料垃圾的新方法。本文提出了一种新颖、可持续和环保的泡沫材料，由微塑料废物（即聚对苯二甲酸乙二醇酯（PET）和聚苯乙烯（PS））制成，并结合了生物基基质。制备了具有不同成分的样品，并对其吸声性能进行了表征。结果表明，该材料具有非常好的吸声性能，并且可以通过使用不同的微塑料含量和类型来定制最终产品的声学特性。这使得这种新型开孔泡沫材料可以应用于许多工业和民用领域。

https://cdn.ncbi.nlm.nih.gov/pmc/blobs/5fd3/9242981/6455e67b9cd2/41598_2022_14009_Fig12_HTML.jpg
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https://cdn.ncbi.nlm.nih.gov/pmc/blobs/5fd3/9242981/4a94714e085b/41598_2022_14009_Fig3_HTML.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/5fd3/9242981/b4b786346f96/41598_2022_14009_Fig4_HTML.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/5fd3/9242981/2a88777020ab/41598_2022_14009_Fig5_HTML.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/5fd3/9242981/e1e90ab4a59e/41598_2022_14009_Fig6_HTML.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/5fd3/9242981/6972a6f9b1c0/41598_2022_14009_Fig7_HTML.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/5fd3/9242981/1df466b1566f/41598_2022_14009_Fig8_HTML.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/5fd3/9242981/64e38f6f8fac/41598_2022_14009_Fig9_HTML.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/5fd3/9242981/f3ebd0f344c5/41598_2022_14009_Fig10_HTML.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/5fd3/9242981/4a92e123f744/41598_2022_14009_Fig11_HTML.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/5fd3/9242981/6455e67b9cd2/41598_2022_14009_Fig12_HTML.jpg

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