Sound absorption properties of wood-based pulp fibre foams

被引:38
作者
Cucharero, Jose [1 ,2 ]
Ceccherini, Sara [3 ]
Maloney, Thad [3 ]
Lokki, Tapio [1 ]
Hanninen, Tuomas [2 ]
机构
[1] Aalto Univ, Sch Elect Engn, Dept Signal Proc & Acoust, Aalto Acoust Lab, Aalto 00076, Finland
[2] Lumir Oy, Vantaa 01510, Finland
[3] Aalto Univ, Sch Chem Engn, Dept Bioprod & Biosyst, Aalto 00076, Finland
关键词
Bio-based acoustic materials; Sound absorption; Wood-based pulp fibres; Fibre ultrastructure; CELLULOSE; PORE; HEMICELLULOSES; ACCESSIBILITY; ADSORPTION; SOFTWOOD; HARDWOOD; POROSITY; SURFACE; XYLAN;
D O I
10.1007/s10570-021-03774-1
中图分类号
TB3 [工程材料学]; TS [轻工业、手工业、生活服务业];
学科分类号
0805 ; 080502 ; 0822 ;
摘要
In this study, sound absorbing materials were produced through foam forming technique using hardwood and softwood pulps with varying chemical composition, ultrastructural, and morphological properties as raw materials. The sound absorption properties of the produced foams were measured and related to the ultrastructure and the morphology of the pulp fibres. All the fibre foams provided sound absorption properties comparable to those of conventional porous materials used for acoustic purposes. In general, further processing, as well as smaller fibre dimensions contribute to improve the sound absorption properties of the pulp fibre foams. The results provide valuable insight on the optimization of wood-based sound absorbing materials. [GRAPHICS] .
引用
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页码:4267 / 4279
页数:13
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