Innovative Use of Sheep Wool for Obtaining Materials with Improved Sound-Absorbing Properties

被引：44

作者：

Borlea , Simona Ioana ^{[1
]}

Tiuc, Ancuta-Elena ^{[1
]}

Nemes, Ovidiu ^{[1
,2
]}

Vermesan, Horatiu ^{[1
]}

Vasile, Ovidiu ^{[3
]}

机构：

[1] Tech Univ Cluj Napoca, Fac Mat & Environm Engn, 28 Memorandumului St, Cluj Napoca 400114, Romania

[2] Natl Inst Res & Dev Environm Protect, 294 Blvd Splaiul Independentei, Bucharest 060031, Romania

[3] Univ Politehn Bucuresti, Dept Mech, 313 Splaiul Independentei, Bucharest 060042, Romania

来源：

MATERIALS | 2020年 / 13卷 / 03期

关键词：

sheep wool recovery; acoustic materials; sound absorption coefficient; CONSTRUCTION MATERIAL; NATURAL FIBERS; ABSORPTION; COMPOSITE; PERFORMANCE;

D O I：

10.3390/ma13030694

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

In recent years, natural materials are becoming a valid alternative to traditional sound absorbers due to reduced production costs and environmental protection. This study explores alternative usage of sheep wool as a construction material with improved sound absorbing properties beyond its traditional application as a sound absorber in textile industry or using of waste wool in the textile industry as a raw material. The aim of this study was to obtain materials with improved sound-absorbing properties using sheep wool as a raw material. Seven materials were obtained by hot pressing (60 divided by 80 degrees C and 0.05 divided by 6 MPa) of wool fibers and one by cold pressing. Results showed that by simply hot pressing the wool, a different product was obtained, which could be processed and easily manipulated. The obtained materials had very good sound absorption properties, with acoustic absorption coefficient values of over 0.7 for the frequency range of 800 divided by 3150 Hz. The results prove that sheep wool has a comparable sound absorption performance to mineral wool or recycled polyurethane foam.

引用

页数：13

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