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Sound Absorption Performance of the Poplar Seed Fiber/PCL Composite Materials

Composite materials were prepared by the hot pressing method using poplar seed fibers and polycaprolactone (PCL) as the raw materials to solve the problems related to the recycling of waste fibers. The effects of mass fraction of poplar seed fibers, the volume density, and thickness on the sound abs...

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Detalles Bibliográficos
Autores principales: Liu, Yingjie, Lyu, Lihua, Guo, Jing, Wang, Ying
Formato: Online Artículo Texto
Lenguaje:English
Publicado: MDPI 2020
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC7142939/
https://www.ncbi.nlm.nih.gov/pubmed/32210178
http://dx.doi.org/10.3390/ma13061465
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author Liu, Yingjie
Lyu, Lihua
Guo, Jing
Wang, Ying
author_facet Liu, Yingjie
Lyu, Lihua
Guo, Jing
Wang, Ying
author_sort Liu, Yingjie
collection PubMed
description Composite materials were prepared by the hot pressing method using poplar seed fibers and polycaprolactone (PCL) as the raw materials to solve the problems related to the recycling of waste fibers. The effects of mass fraction of poplar seed fibers, the volume density, and thickness on the sound absorption performance of the resulting composite materials were studied. The sound absorption coefficient curves of the composite material were obtained by the acoustic impedance transfer function method. The sound absorption coefficient of the composite material that was prepared under the optimal process conditions was higher than 0.7, and the effective sound absorption frequency band was wide. According to the box counting dimension method, which is based on the fractal theory, the fractal dimensions of the composite materials were calculated while using the Matlab program. The relationships between the fractal dimensions and the volume densities, mass fractions of poplar seed fibers, and thicknesses of the composite materials were also analyzed. Subsequently, the quantitative relationship between the fractal dimension and the sound absorption property parameters of the composite material was established in order to provide a theoretical basis for the design of the sound absorption composite material.
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spelling pubmed-71429392020-04-14 Sound Absorption Performance of the Poplar Seed Fiber/PCL Composite Materials Liu, Yingjie Lyu, Lihua Guo, Jing Wang, Ying Materials (Basel) Article Composite materials were prepared by the hot pressing method using poplar seed fibers and polycaprolactone (PCL) as the raw materials to solve the problems related to the recycling of waste fibers. The effects of mass fraction of poplar seed fibers, the volume density, and thickness on the sound absorption performance of the resulting composite materials were studied. The sound absorption coefficient curves of the composite material were obtained by the acoustic impedance transfer function method. The sound absorption coefficient of the composite material that was prepared under the optimal process conditions was higher than 0.7, and the effective sound absorption frequency band was wide. According to the box counting dimension method, which is based on the fractal theory, the fractal dimensions of the composite materials were calculated while using the Matlab program. The relationships between the fractal dimensions and the volume densities, mass fractions of poplar seed fibers, and thicknesses of the composite materials were also analyzed. Subsequently, the quantitative relationship between the fractal dimension and the sound absorption property parameters of the composite material was established in order to provide a theoretical basis for the design of the sound absorption composite material. MDPI 2020-03-23 /pmc/articles/PMC7142939/ /pubmed/32210178 http://dx.doi.org/10.3390/ma13061465 Text en © 2020 by the authors. Licensee MDPI, Basel, Switzerland. This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution (CC BY) license (http://creativecommons.org/licenses/by/4.0/).
spellingShingle Article
Liu, Yingjie
Lyu, Lihua
Guo, Jing
Wang, Ying
Sound Absorption Performance of the Poplar Seed Fiber/PCL Composite Materials
title Sound Absorption Performance of the Poplar Seed Fiber/PCL Composite Materials
title_full Sound Absorption Performance of the Poplar Seed Fiber/PCL Composite Materials
title_fullStr Sound Absorption Performance of the Poplar Seed Fiber/PCL Composite Materials
title_full_unstemmed Sound Absorption Performance of the Poplar Seed Fiber/PCL Composite Materials
title_short Sound Absorption Performance of the Poplar Seed Fiber/PCL Composite Materials
title_sort sound absorption performance of the poplar seed fiber/pcl composite materials
topic Article
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC7142939/
https://www.ncbi.nlm.nih.gov/pubmed/32210178
http://dx.doi.org/10.3390/ma13061465
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