Sound Absorption of Hemp Fibers (Cannabis Sativa L.) Based Nonwoven Fabrics and Composites: A Review

ABSTRACT

Compared to the commonly used synthetic fibrous materials, natural fiber represents an eco-friendly solution in various engineering fields. Noise control is an important application of natural fibers due to the unique acoustic characteristics. Studies on the sound absorption of hemp fibers have attracted more and more attention in recent years. Generally, hemp products for sound absorption mainly including nonwoven fabrics and fiber-reinforced composites. This review has gathered the most recent advances on the acoustics of hemp fibers, and also the sound absorption design principles of hemp-based materials. A detailed information related to the improvement of the sound absorption properties of hemp is given, which mainly including the optimization of manufacturing, materials component, bulk density, morphologies, and structural parameters, etc. Hemp fibers exhibit robust acoustical performance, and the present work is beneficial to the development of sound absorption hemp-based materials.

摘要

常用的合成纤维材料相比, 天然纤维具有良好的生态友好性, 可用于各种工程领域。在噪声控制方面, 由于天然纤维独特的声学特性, 其重要性日益显现。近年来, 对大麻纤维吸声性能的研究, 越来越受到人们的重视。通常, 用于吸声降噪的大麻相关产品, 主要包括由大麻构成的无纺布以及大麻纤维增强复合材料。本文介绍了有关大麻纤维声学性能的最新研究进展, 内容涉及各种与大麻相关的声学材料的设计。对提高大麻纤维材料吸声性能的方法进行了总结, 主要包括加工方法, 材料组分选择, 材料容重, 形貌和结构参数的优化等。鉴于大麻纤维优异的声学性能, 本文的工作有助于推动大麻纤维吸声降噪材料的发展。

KEYWORDS:

• Hemp fiber
• sound absorption
• nonwoven fabric
• composites
• multi-component

关键词:

• 大麻纤维吸声非织造布复合材料多组分