Sound Absorption Properties of Unbleached Cellulose Loose-Fill Insulation Material

被引：0

作者：

Arenas, Jorge P. ^{[1
]}

Rebolledo, Juan ^{[1
]}

del Rey, Romina ^{[2
]}

Alba, Jesus ^{[2
]}

机构：

[1] Univ Austral Chile, Inst Acoust, Valdivia, Chile

[2] Univ Politecn Valencia, Ctr Tecnol Fisicas Acoust Mat Astrofis, Escuela Politecn Super Gandia, E-46071 Valencia, Spain

来源：

BIORESOURCES | 2014年 / 9卷 / 04期

关键词：

Sound absorbing materials; Cellulose; Sound absorption; Porous material; Recyclable insulation; Eco-materials; AIR-FLOW; RESISTIVITY; PREDICTION;

D O I：

10.15376/biores.9.4.6227-6240

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：

Recyclable cellulose loose-fill insulation has been commonly used in heavy timber construction for treating attic areas, under floors, and wall cavities. Through the kraft process, the unbleached cellulose adopts a texture characterized by small crumbs, forming a porous medium. In this work, different samples of a single layer of loose-fill cellulose insulation with different thicknesses were tested to measure their sound absorption properties, the airflow resistivity, and porosity for both dry and moist samples. The regression coefficients for an empirical model were calculated using a numerical optimization method. It is concluded that the model predicts the acoustical performance of this material well and that the sound absorption properties of the material are similar to those of mineral fiber-based materials.

引用

页码：6227 / 6240

页数：14

共 35 条

[31] Investigation on sound absorption properties for recycled fibrous materials [J].