Impact of temperature aging on behavioral changes in vinyl ester composite reinforced with Himalayan nettle fiber and silicious rock dust

IF 3.5 4区 工程技术 Q3 ENERGY & FUELS
A. Anbuchezian, S. Suresh Pungaiah, D. Jayabalakrishnan, S. Lakshmana Kumar
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Abstract

This study investigates the mechanical, wear, thermal, and flammability properties of vinyl ester composites reinforced with Himalayan nettle fiber and silicious rock dust, with a particular focus on the effects of thermal aging at 50 °C for 30 days. The composites were fabricated using a lay-up technique, with various ratios of vinyl ester resin, nettle fiber, and silicious rock dust, creating specimens designated as R, RN, RN0, RN1, RN2, and RN3. Among these, specimen RN3, containing 50 Wt.% nettle fiber and 4 Wt.% silicious rock dust, demonstrated superior performance. RN3 exhibited a tensile strength of 139 MPa, flexural strength of 151 MPa, hardness of 83 Shore-D, and an Izod impact strength of 5.5 J, indicating significant improvements due to the effective load transfer from the matrix to the fibers and the reinforcing effect of the filler. RN3 also showed the lowest specific wear rate of 0.0012 mm3/Nm and a coefficient of friction of 0.14, primarily due to the abrasive-resistant nature of the silicious rock dust and its ability to enhance load distribution. Thermogravimetric analysis revealed that RN3 had a weight loss at maximum degradation of 99% and a degradation temperature of 386 °C, highlighting its enhanced thermal stability. Additionally, RN3 exhibited the lowest flame propagation speed of 3.7 mm/min, maintaining a UL-94 V-0 rating, making it particularly suitable for high-safety applications. Optical microscopic scanning of wear surfaces further confirmed the effectiveness of silicious rock dust filler in reducing wear damage and improving fiber-matrix adhesion, which contributed to the overall durability of the composite. This study demonstrates the potential of using industrial waste particles and natural fibers in reinforcing composites for improved mechanical and thermal properties, particularly in applications requiring long-term stability and resistance to wear and fire.

温度老化对喜玛拉雅麻纤维与硅质岩粉增强乙烯酯复合材料性能变化的影响
本研究研究了喜玛拉雅荨麻纤维和硅质岩粉增强的乙烯酯复合材料的机械、磨损、热学和可燃性性能,并特别关注了在50°C下30天热老化的影响。复合材料采用铺层技术,用不同比例的乙烯酯树脂、荨麻纤维和硅质岩石粉尘制成,创建命名为R、RN、RN0、RN1、RN2和RN3的样品。其中,含有50 Wt.%荨麻纤维和4 Wt.%硅质岩粉的RN3样品表现出较好的性能。RN3的抗拉强度为139 MPa,抗折强度为151 MPa,硬度为83 Shore-D, Izod冲击强度为5.5 J,表明载荷从基体到纤维的有效传递以及填料的增强作用显著提高了RN3的抗拉强度。RN3的比磨损率最低,为0.0012 mm3/Nm,摩擦系数为0.14,这主要是由于硅质岩粉的耐磨性和增强载荷分布的能力。热重分析表明,RN3的最大降解率为99%,降解温度为386℃,热稳定性增强。此外,RN3的最低火焰传播速度为3.7 mm/min,保持UL-94 V-0等级,使其特别适合高安全性应用。磨损表面的光学显微扫描进一步证实了硅质岩粉填料在减少磨损损伤和提高纤维-基体附着力方面的有效性,这有助于提高复合材料的整体耐久性。这项研究证明了在增强复合材料中使用工业废料颗粒和天然纤维的潜力,以改善机械和热性能,特别是在需要长期稳定性和耐磨损和防火的应用中。
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来源期刊
Biomass Conversion and Biorefinery
Biomass Conversion and Biorefinery Energy-Renewable Energy, Sustainability and the Environment
CiteScore
7.00
自引率
15.00%
发文量
1358
期刊介绍: Biomass Conversion and Biorefinery presents articles and information on research, development and applications in thermo-chemical conversion; physico-chemical conversion and bio-chemical conversion, including all necessary steps for the provision and preparation of the biomass as well as all possible downstream processing steps for the environmentally sound and economically viable provision of energy and chemical products.
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