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由硬质/软质聚氨酯泡沫与杉木锯末制成的新型复合材料：声学和热学性能

New Composite Materials Made from Rigid/Flexible Polyurethane Foams with Fir Sawdust: Acoustic and Thermal Behavior.

作者信息

Tiuc Ancuța-Elena, Borlea Mureșan Simona Ioana, Nemeș Ovidiu, Vermeșan Horațiu, Vasile Ovidiu, Popa Florin, Pințoi Ramona

机构信息

Department Environmental Engineering and Sustainable Development Entrepreneurship, Technical University of Cluj-Napoca, 400641 Cluj-Napoca, Romania.

Department of Mechanics, University Politehnica of Bucharest, 060042 Bucharest, Romania.

出版信息

Polymers (Basel). 2022 Sep 2;14(17):3643. doi: 10.3390/polym14173643.

DOI:10.3390/polym14173643
PMID:36080718
原文链接:https://pmc.ncbi.nlm.nih.gov/articles/PMC9459929/
Abstract

The aim of this work is to obtain new materials with improved sound absorbing and thermal properties, using rigid or flexible polyurethane foam reinforced with recycled fir sawdust from wood processing as well as by optimizing their mixing ratio. In this respect, we prepared and characterized samples by mixing rigid polyurethane foam (RPUF)/flexible polyurethane foam (FPUF) with 0, 35, 40, 45, and 50 wt% fir sawdust (FS) with grains size larger than 2 mm. The samples were evaluated by cell morphology analysis, sound absorption, and thermal insulation performance. The obtained composite materials containing 50% sawdust have superior acoustic properties compared to those with 100% FPUF in the range of 420-1250 Hz. The addition of 35% and 50% FS in the FPUF matrix led to improved thermal insulation properties and decreased thermal insulation properties in the case of RPUF. The results show that the use of FS-based composites with the FPUF/RPUF matrix for sound absorption and thermal insulation applications is a desirable choice and could be applied as an alternative to conventional synthetic fiber-based materials and as a recycling method of waste wood.

摘要

这项工作的目的是通过使用来自木材加工的回收冷杉锯末增强的刚性或柔性聚氨酯泡沫，并优化它们的混合比例，来获得具有改进的吸音和热性能的新材料。在这方面，我们通过将刚性聚氨酯泡沫（RPUF）/柔性聚氨酯泡沫（FPUF）与0、35、40、45和50 wt%粒径大于2 mm的冷杉锯末（FS）混合来制备和表征样品。通过泡孔形态分析、吸音和隔热性能对样品进行评估。与100% FPUF相比，含有50%锯末的复合材料在420 - 1250 Hz范围内具有优异的声学性能。在FPUF基体中添加35%和50%的FS可提高隔热性能，而在RPUF的情况下则会降低隔热性能。结果表明，使用基于FS的FPUF/RPUF基体复合材料用于吸音和隔热应用是一个理想的选择，并且可以作为传统合成纤维基材料的替代品以及作为废木材的回收方法来应用。

https://cdn.ncbi.nlm.nih.gov/pmc/blobs/6d43/9459929/c8fa6683bd93/polymers-14-03643-g004.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/6d43/9459929/dc29a70fb91e/polymers-14-03643-g005.jpg
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https://cdn.ncbi.nlm.nih.gov/pmc/blobs/6d43/9459929/5a8869ddeef4/polymers-14-03643-g010.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/6d43/9459929/8582f5a2b0ad/polymers-14-03643-g011.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/6d43/9459929/058d23acab2b/polymers-14-03643-g012.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/6d43/9459929/054c352491f2/polymers-14-03643-g013.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/6d43/9459929/a16f5ea44eb7/polymers-14-03643-g001.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/6d43/9459929/4de9675b5dda/polymers-14-03643-g002.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/6d43/9459929/d7a38b8fce51/polymers-14-03643-g003a.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/6d43/9459929/c8fa6683bd93/polymers-14-03643-g004.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/6d43/9459929/dc29a70fb91e/polymers-14-03643-g005.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/6d43/9459929/3cca6ef557b7/polymers-14-03643-g006.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/6d43/9459929/4f6676f5377a/polymers-14-03643-g007.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/6d43/9459929/132dd08fc578/polymers-14-03643-g008.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/6d43/9459929/b90806bbfeab/polymers-14-03643-g009.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/6d43/9459929/5a8869ddeef4/polymers-14-03643-g010.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/6d43/9459929/8582f5a2b0ad/polymers-14-03643-g011.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/6d43/9459929/058d23acab2b/polymers-14-03643-g012.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/6d43/9459929/054c352491f2/polymers-14-03643-g013.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/6d43/9459929/a16f5ea44eb7/polymers-14-03643-g001.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/6d43/9459929/4de9675b5dda/polymers-14-03643-g002.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/6d43/9459929/d7a38b8fce51/polymers-14-03643-g003a.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/6d43/9459929/c8fa6683bd93/polymers-14-03643-g004.jpg

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