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<p>In this study, a unidirectional jute fiber-reinforced composite was fabricated using silica (SiO<sub>2</sub>​) powder as a filler within a resin matrix. The unidirectional jute fiber mat was woven on a custom-designed handloom using 0.5&#xa0;mm diameter jute yarn. Six different composites were fabricated with varying SiO<sub>2</sub>​ filler contents of 0%, 0.5%, 1%, 1.5%, 2%, and 3%. To evaluate environmental durability, the specimens were immersed for 195 days in three different media, acidic (pH 3), neutral (pH 7), and basic (pH 8). The kinetics of the diffusion mechanism were analyzed in pH 7. Mechanical properties, including tensile, flexural, impact, and hardness, were experimentally evaluated under both control and water-immersed conditions. Finite element method (FEM) using ABAQUS was conducted for the control specimens to validate the experimental results. The composite containing 1.5% SiO<sub>2</sub>​ exhibited the most enhanced mechanical performance, with increases in tensile strength (11.84%), flexural strength (23.8%), impact strength (53.3%), and hardness (8.5%) compared to the composite without filler. Moisture absorption and swelling behavior were also optimal at 1.5% filler concentration, consistent with the diffusion coefficient results. X-ray diffraction (XRD) analysis confirmed the influence of SiO<sub>2</sub> on crystallinity, while Fourier-transform infrared spectroscopy (FTIR) verified the presence of functional groups. Scanning electron microscopy (SEM), and EDS of the fracture surfaces further supported that 1.5% SiO<sub>2</sub> provides optimal interfacial bonding and structural integrity within the composite.</p>

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Effect of silica filler on mechanical performance and moisture durability of unidirectional jute fabric epoxy composites

  • 期刊论文

  • 发表日期：

    2026年5月8日

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  • Shakil Khan,
  • Md Foisal Hossain,
  • Muhammed Sohel Rana,
  • Md Shafiul Ferdous

摘要

In this study, a unidirectional jute fiber-reinforced composite was fabricated using silica (SiO2​) powder as a filler within a resin matrix. The unidirectional jute fiber mat was woven on a custom-designed handloom using 0.5 mm diameter jute yarn. Six different composites were fabricated with varying SiO2​ filler contents of 0%, 0.5%, 1%, 1.5%, 2%, and 3%. To evaluate environmental durability, the specimens were immersed for 195 days in three different media, acidic (pH 3), neutral (pH 7), and basic (pH 8). The kinetics of the diffusion mechanism were analyzed in pH 7. Mechanical properties, including tensile, flexural, impact, and hardness, were experimentally evaluated under both control and water-immersed conditions. Finite element method (FEM) using ABAQUS was conducted for the control specimens to validate the experimental results. The composite containing 1.5% SiO2​ exhibited the most enhanced mechanical performance, with increases in tensile strength (11.84%), flexural strength (23.8%), impact strength (53.3%), and hardness (8.5%) compared to the composite without filler. Moisture absorption and swelling behavior were also optimal at 1.5% filler concentration, consistent with the diffusion coefficient results. X-ray diffraction (XRD) analysis confirmed the influence of SiO2 on crystallinity, while Fourier-transform infrared spectroscopy (FTIR) verified the presence of functional groups. Scanning electron microscopy (SEM), and EDS of the fracture surfaces further supported that 1.5% SiO2 provides optimal interfacial bonding and structural integrity within the composite.