Characterization and Comparative Analysis on Mechanical and Acoustical Properties of Camellia Sinensis/Ananas Comosus/Glass Fiber Hybrid Polymer Composites

ABSTRACT

During last few decades, the hybrid composites emerged from natural fiber has brought incontestable advantages over synthetic materials. The environmental impact such as toxicity, nonbiodegradable garbage, and noise pollution has led to the identification of new class of fibers and also subsequent failure in critical stiffness and weight sensitivities of fiber-reinforced polymers has initiated magnification of mechanical toughness. In this present paper, fiber-reinforced composite materials are made with Camellia sinensis–Ananas comosus hybridized by glass fiber and epoxy resin matrix. The amalgamated laminates were forged by a compression molding process with the composition of 40% wt. of reinforcing fiber and 60% wt. of epoxy matrix in a constant proportion. A hydrophilic content present inside natural fibers are alkalized by 5% of NaOH to modify as hydrophobic nature for intensifying bonding between fiber and matrix. These hybridized fibers are mechanically, chemically, morphologically, and acoustically analyzed to meet the requirements of mechanical and sound proofing properties. The results shows that 25% wt. fraction of Camellia sinensis amalgamate with unidirectional fiber shows better average acoustical absorption coefficient (AAC) of 0.46 at 2000–6300 Hz frequency range and compared with existing material to establish the potential of using it in sound-proofing acoustical applications such as architectural acoustics, sound recording and reproduction room, noise barrier walls, loudspeaker design, etc.

摘要

近几十年来，由天然纤维生产的混杂复合材料比合成材料带来了无可比拟的优势. 诸如毒性、不可生物降解、噪声污染等环境影响导致了新一类纤维的鉴定，随后纤维增强聚合物的临界刚度和重量敏感度的失效引发了机械韧性的放大. 本文采用玻璃纤维与环氧树脂基体混杂的Camellia sinensis复合材料，制备了纤维增强复合材料。 采用压缩成型工艺，将40%重量的增强纤维和60%重量的环氧树脂按一定比例配制而成。天然纤维中存在的亲水性含量由5%的NaOH碱化，以改性为疏水性，以加强纤维与基体之间的结合. 这些杂交纤维是机械的、化学的、形态的和声学分析的，以满足机械和隔音性能的要求. 结果表明，与单向纤维混合的山茶25%重量分数在2000～6300 Hz频率范围内表现出较好的平均吸声系数（AAC）为0.46，并与现有材料相比较，以确定其在建筑声学等隔声应用中的潜力录音复制室、隔声墙、扬声器设计等

KEYWORDS:

• Camellia sinensis
• alkaline treatment
• hydrophobic nature
• hybridization
• morphological
• acoustical applications

关键词:

• 关键词
• 碱性处理
• 疏水性
• 杂交
• 形态上
• 声学应用

Title and central theme of the article

In this environmental degrading world, noise pollution has its ripple effect on lives of human beings. The interior control of noise has been notably improving in order to save future generations. But at the same time, the advanced materials should also balance the development and applications where it is being used. Besides that, the materials should not harm human beings at any cost.

This present experimental work mainly focuses on sound absorption analysis on different natural fibers like Camellia sinensis and Ananas comosus. This work helps researcher to select new class of fibers and their affecting parameters in order to enhance the Sound proofing quality and decreasing effect on human ears.

Prime Novelty Statement

This work consists of new kind of tabular formation that expresses more information on natural fiber efficiency on acoustical performance. This work has not been attempted earlier in this specified format.

Declaration

The authors solemnly declare that they have no conflict of interest. This work has not been published or presented anywhere.