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具有分层结构的钛酸钡/丁腈橡胶-聚氨酯泡沫复合材料的制备及其吸声性能

Preparation and sound absorption properties of barium titanate/nitrile butadiene rubber-polyurethane foam composites with stratified structure.

作者信息

Jiang Xueliang, Wang Zhijie, Yang Zhen, Zhang Fuqing, You Feng, Yao Chu

机构信息

Hubei Key Laboratory of Plasma Chemistry and Advanced Materials China.

College of Materials Science and Engineering, Wuhan Institute of Technology Wuhan 430074 China

出版信息

RSC Adv. 2018 Jun 7;8(37):20968-20975. doi: 10.1039/c8ra03330g. eCollection 2018 Jun 5.

DOI:10.1039/c8ra03330g
PMID:35542355
原文链接:https://pmc.ncbi.nlm.nih.gov/articles/PMC9080885/
Abstract

Barium titanate/nitrile butadiene rubber (BT/NBR) and polyurethane (PU) foam were combined to prepare sound-absorbing materials with different stratified structures including a double-layer structure and alternating multilayered structure, respectively. The effects of the cell size of the PU foam and the thickness of the PU foam layer on the sound absorption efficiency of the BT/NBR-PU foam composite with a double-layer structure were studied, and the effects of the alternating unit number on the sound absorption efficiency of the BT/NBR-PU foam composite with an alternating multilayered structure were studied. The results show that the sound absorption peak of the double-layer structure composites would move toward low frequency with a decrease of the cell size of the PU foam or with an increase the thickness of the PU foam layer. With increasing alternating unit number, the composites with an alternating multilayered structure have good sound absorption performance in a wider frequency bandwidth. The sound absorption frequency range of the stratified composite could be adjusted by changing the cell size of the PU foam, the thickness of the PU foam layer and the alternating unit number. Each stratified structure BT/NBR-PU foam, whether with a double-layer structure or alternating multilayered structure, shows excellent sound absorption efficiency at low frequency owing to the combination of airflow resistivity, resonance absorption and interface dissipation.

摘要

将钛酸钡/丁腈橡胶（BT/NBR）与聚氨酯（PU）泡沫相结合，分别制备出具有不同分层结构的吸声材料，包括双层结构和交替多层结构。研究了PU泡沫的泡孔尺寸和PU泡沫层厚度对双层结构BT/NBR-PU泡沫复合材料吸声效率的影响，以及交替单元数对交替多层结构BT/NBR-PU泡沫复合材料吸声效率的影响。结果表明，双层结构复合材料的吸声峰值会随着PU泡沫泡孔尺寸的减小或PU泡沫层厚度的增加而向低频移动。随着交替单元数的增加，交替多层结构复合材料在更宽的频率带宽内具有良好的吸声性能。通过改变PU泡沫的泡孔尺寸、PU泡沫层厚度和交替单元数，可以调节分层复合材料的吸声频率范围。由于气流阻力、共振吸收和界面耗散的共同作用，每种分层结构的BT/NBR-PU泡沫，无论是双层结构还是交替多层结构，在低频下均表现出优异的吸声效率。

https://cdn.ncbi.nlm.nih.gov/pmc/blobs/bf7d/9080885/91945dceafd2/c8ra03330g-f9.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/bf7d/9080885/a676e8b9ae20/c8ra03330g-f1.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/bf7d/9080885/cfa5bcb2b113/c8ra03330g-f2.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/bf7d/9080885/f24e3b83ff87/c8ra03330g-f3.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/bf7d/9080885/401b67c707e1/c8ra03330g-f4.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/bf7d/9080885/9cfeb429f1eb/c8ra03330g-f5.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/bf7d/9080885/b5356ffc2bb4/c8ra03330g-f6.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/bf7d/9080885/cd6820574d60/c8ra03330g-f7.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/bf7d/9080885/9b5cced7eb76/c8ra03330g-f8.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/bf7d/9080885/91945dceafd2/c8ra03330g-f9.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/bf7d/9080885/a676e8b9ae20/c8ra03330g-f1.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/bf7d/9080885/cfa5bcb2b113/c8ra03330g-f2.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/bf7d/9080885/f24e3b83ff87/c8ra03330g-f3.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/bf7d/9080885/401b67c707e1/c8ra03330g-f4.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/bf7d/9080885/9cfeb429f1eb/c8ra03330g-f5.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/bf7d/9080885/b5356ffc2bb4/c8ra03330g-f6.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/bf7d/9080885/cd6820574d60/c8ra03330g-f7.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/bf7d/9080885/9b5cced7eb76/c8ra03330g-f8.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/bf7d/9080885/91945dceafd2/c8ra03330g-f9.jpg

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