This study investigates the influence of nano-fumed silica content on thermo-mechanical properties of jute/epoxy composites. The results reveal that jute composites without filler (JJJJ-0) exhibited highest tensile strength (33.01 MPa) and percentage elongation (1.9522%), while composites with 1.5% and 2.5% filler demonstrated the highest tensile modulus (1967 MPa) and flexural modulus (2432.9 MPa), respectively. The observation demonstrates that as the filler content increases in jute composites, tensile strength decreases but flexural strength increases. However, an exception is noted for sample containing excess filler (3.5%), which exhibited the lowest flexural strength (44.36 MPa). The composite with 2.5% filler exhibited the highest flexural strength (53.5 MPa). Thermal analysis indicated that the addition of nanofiller enhanced both the activation energy (Ea) and thermal stability of the jute composites. A four-layer carbon composite without filler (CCCC-0) was also fabricated in order to compare wear and thermal stability performance with jute composites. The wear study was performed at different temperatures and found that JJJJ-3.5 composite exhibited superior wear resistance at ambient temperature, while CCCC-0 composite had better wear resistance at high temperatures. Also, the surface morphology of the eroded surface was examined using a scanning electron microscope (SEM) to study the failure mechanism of composites.

中文翻译：

---

气相二氧化硅增强黄麻/环氧复合材料的热机械特性和冲蚀磨损研究

本研究研究了纳米气相二氧化硅含量对黄麻/环氧复合材料热机械性能的影响。结果表明，不含填料的黄麻复合材料（JJJJ-0）表现出最高的拉伸强度（33.01 MPa）和伸长率（1.9522%），而含有1.5%和2.5%填料的复合材料表现出最高的拉伸模量（1967 MPa）和弯曲模量（2432.9 MPa），分别。观察结果表明，随着黄麻复合材料中填料含量的增加，拉伸强度降低，但弯曲强度增加。然而，含有过量填料 (3.5%) 的样品存在例外，其弯曲强度最低 (44.36 MPa)。填料含量为 2.5% 的复合材料表现出最高的弯曲强度（53.5 MPa）。热分析表明，纳米填料的添加提高了活化能（EA）和黄麻复合材料的热稳定性。还制造了不含填料的四层碳复合材料（CCCC-0），以便与黄麻复合材料比较磨损和热稳定性能。在不同温度下进行磨损研究，发现JJJJ-3.5复合材料在常温下表现出优异的耐磨性，而CCCC-0复合材料在高温下具有更好的耐磨性。此外，使用扫描电子显微镜（SEM）检查侵蚀表面的表面形貌，以研究复合材料的失效机制。