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<p>Basalt and glass fiber-reinforced polymer composites have attracted considerable attention due to their favorable stiffness, corrosion resistance, and chemical stability. This research focuses on predicting and optimizing the influence of fibersurface treatment using 3-aminopropyl triethoxysilane (KH550) and hybrid MWCNT–SiO nanofillers on the tensile and flexural moduli of basalt/glassfiber reinforced polymer composites. The investigated parameters included filler content (0–2 wt%), silane concentration (5–15 wt%), dipping time (10–30&#xa0;min), and drying time (24–72&#xa0;h). A Box–Behnken Design 89based on Response Surface Methodology was employed to systematically evaluate the effects of these parameters. Composite laminates were fabricated using a 12-layer fiber configuration with the stacking sequence [B/G/G/B/B/G]s through manual layup followed by compression molding in accordance with ASTM D3039 and ASTM D790 standards. Regression analysis and ANOVA results revealed that filler content was the most influential parameter, followed by silane concentration. The optimized conditions of 0.26 wt% filler, 8.34 wt% silane concentration, 12.19&#xa0;min dipping time, and 55.32&#xa0;h drying time yielded tensile and flexural modulus values of 20.57 GPa and 13.17 GPa, respectively. Compared to the baseline condition, the optimized composite exhibited significant enhancements, with tensile modulus increasing by 14% (18 GPa to 20.57 GPa) and flexural modulus increasing by 20% (11 GPa to 13.17 GPa). Improved tensile and flexural modulus in basalt/glass fiber reinforced polymer composites were achieved through fiber surface treatment and hybrid MWCNT–SiO₂ nanofiller reinforcement. SEM analysis confirmed stronger interfacial adhesion, fewer voids, and better failure behavior. The study was limited to the evaluation of tensile and flexural modulus, without considering durability-related properties.</p>

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Optimization of fiber silane treatment parameters and hybrid MWCNT–SiO₂ nanofiller for enhanced tensile and flexural modulus of basalt/glass polymer composites

  • 期刊论文

  • 发表日期：

    2026年7月4日

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  • V. Boobalan

摘要

Basalt and glass fiber-reinforced polymer composites have attracted considerable attention due to their favorable stiffness, corrosion resistance, and chemical stability. This research focuses on predicting and optimizing the influence of fibersurface treatment using 3-aminopropyl triethoxysilane (KH550) and hybrid MWCNT–SiO nanofillers on the tensile and flexural moduli of basalt/glassfiber reinforced polymer composites. The investigated parameters included filler content (0–2 wt%), silane concentration (5–15 wt%), dipping time (10–30 min), and drying time (24–72 h). A Box–Behnken Design 89based on Response Surface Methodology was employed to systematically evaluate the effects of these parameters. Composite laminates were fabricated using a 12-layer fiber configuration with the stacking sequence [B/G/G/B/B/G]s through manual layup followed by compression molding in accordance with ASTM D3039 and ASTM D790 standards. Regression analysis and ANOVA results revealed that filler content was the most influential parameter, followed by silane concentration. The optimized conditions of 0.26 wt% filler, 8.34 wt% silane concentration, 12.19 min dipping time, and 55.32 h drying time yielded tensile and flexural modulus values of 20.57 GPa and 13.17 GPa, respectively. Compared to the baseline condition, the optimized composite exhibited significant enhancements, with tensile modulus increasing by 14% (18 GPa to 20.57 GPa) and flexural modulus increasing by 20% (11 GPa to 13.17 GPa). Improved tensile and flexural modulus in basalt/glass fiber reinforced polymer composites were achieved through fiber surface treatment and hybrid MWCNT–SiO₂ nanofiller reinforcement. SEM analysis confirmed stronger interfacial adhesion, fewer voids, and better failure behavior. The study was limited to the evaluation of tensile and flexural modulus, without considering durability-related properties.