Hassan Tufail, Jamshaid Hafsa, Mishra Rajesh, Khan Muhammad Qamar, Petru Michal, Novak Jan, Choteborsky Rostislav, Hromasova Monika
Faculty of Textile Engineering, National Textile University, Faisalabad 37610, Pakistan.
Protective Textile Group, National Textile University, Faisalabad 37610, Pakistan.
Polymers (Basel). 2020 Mar 13;12(3):654. doi: 10.3390/polym12030654.
The use of acoustic panels is one of the most important methods for sound insulation in buildings. Moreover, it has become increasingly important to use green/natural origin materials in this area to reduce environmental impact. This study focuses on the investigation of acoustic, mechanical and thermal properties of natural fiber waste reinforced green epoxy composites. Three different types of fiber wastes were used, e.g., cotton, coconut and sugarcane with epoxy as the resin. Different fiber volume fractions, i.e., 10%, 15% and 20% for each fiber were used with a composite thickness of 3 mm. The sound absorption coefficient, impact strength, flexural strength, thermal conductivity, diffusivity, coefficient of thermal expansion and thermogravimetric properties of all samples were investigated. It has been found that by increasing the fiber content, the sound absorption coefficient also increases. The coconut fiber-based composites show a higher sound absorption coefficient than in the other fiber-reinforced composites. The impact and flexural strength of the cotton fiber-reinforced composite samples are higher than in other samples. The coefficient of thermal expansion of the cotton fiber-based composite is also higher than the other composites. Thermogravimetric analysis revealed that all the natural fiber-reinforced composites can sustain till 300 °C with a minor weight loss. The natural fiber-based composites can be used in building interiors, automotive body parts and household furniture. Such composite development is an ecofriendly approach to the acoustic world.
使用吸音板是建筑物隔音最重要的方法之一。此外，在该领域使用绿色/天然来源材料以减少环境影响变得越来越重要。本研究重点调查天然纤维废料增强绿色环氧复合材料的声学、力学和热性能。使用了三种不同类型的纤维废料，例如棉、椰子和甘蔗，并以环氧树脂作为树脂。每种纤维使用不同的纤维体积分数，即10%、15%和20%，复合材料厚度为3毫米。研究了所有样品的吸声系数、冲击强度、弯曲强度、热导率、扩散率、热膨胀系数和热重性能。结果发现，通过增加纤维含量，吸声系数也会增加。椰子纤维基复合材料的吸声系数高于其他纤维增强复合材料。棉纤维增强复合材料样品的冲击强度和弯曲强度高于其他样品。棉纤维基复合材料的热膨胀系数也高于其他复合材料。热重分析表明，所有天然纤维增强复合材料在300℃时都能承受轻微的重量损失。天然纤维基复合材料可用于建筑内饰、汽车车身部件和家用家具。这种复合材料的开发是声学领域的一种环保方法。
