Abstract

Recycled fibers are commonly used in diverse applications and one of the most important applications is sound absorption. Recycled fiber nonwovens currently are in greater demand in industries because of their advantages such as low cost, biodegradability, acceptable mechanical and physical properties, and so on. Eco-friendly sound-absorbing nonwoven materials have been developed using recycled cotton and polyester fibers. From these wastes, six types of recycled nonwovens in white and colored forms were developed using the thermal bonding technique. The recycled cotton/polyester nonwovens noise control performance contributes to its wider adoption as sound absorbers. The sound absorption coefficient was measured according to ASTM E 1050 by the impedance tube method. The physical properties of recycled fiber nonwovens such as density, thickness, porosity, and air permeability were analyzed for all nonwovens. The result revealed that recycled PET/Cotton waste nonwoven mats were absorbing the sound resistance of more than 70% and the recycled nonwoven mats provide the best acoustic absorption properties, these nonwoven mats have adequate moisture resistance at high humidity conditions without affecting the insulation and acoustic properties.

摘要

再生纤维通常用于多种应用，其中最重要的应用之一是吸音。再生纤维非织造布由于其成本低、可生物降解、机械和物理性能可接受等优点，目前在工业中的需求量更大。使用再生棉和聚酯纤维开发了环保吸音无纺布材料。从这些废物中，使用热粘合技术开发了六种白色和彩色形式的回收无纺布。再生棉/聚酯无纺布的噪音控制性能有助于其更广泛地用作吸音材料。根据ASTM E 1050，通过阻抗管法测量吸声系数。再生纤维非织造布的物理特性，如密度、厚度、分析了所有非织造布的孔隙率和透气性。结果表明，回收的PET/Cotton废无纺垫吸声率超过70%，回收的无纺垫具有最佳的吸声性能，这些无纺垫在高湿度条件下具有足够的防潮性，同时不影响隔音和隔音效果。特性。