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<p>The tensile, flexural, and interlaminar shear strengths of composites reinforced with Palmyra palm fiber (PPF) and with 0, 1.5, 3 and 4.5 wt% of silicon dioxide nanoparticles (SiO<sub>2</sub> NPs) were studied at the elevated temperatures (25, 30, 60, 90, and 100ºC) simulating in-service conditions. The results revealed that incorporating 3 wt% of SiO<sub>2</sub> NPs significantly improved the composite tensile strength (61.56 MPa), tensile modulus (6.01 GPa), and interlaminar shear strength (13.26 MPa) at room temperature. The flexural strength increased at 3 wt% of SiO<sub>2</sub> NPs (58.96 MPa), but decreased at 4.5 wt% of SiO<sub>2</sub> NPs (54.12 MPa), representing a threshold beyond which nanoparticle accumulation may reduce performance.</p>

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Impact of Elevated Temperature on the Mechanical Performance and Failure Mechanism of Hybrid Palmyra Palm Fiber-Epoxy Composites Reinforced with Nano SiO2

  • 期刊论文

  • 发表日期：

    2026年1月17日

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  • Velmurugan Ganesan,
  • Jasgurpreet Singh Chohan,
  • Arunkumar Damodharan,
  • Ramya Maranan,
  • Elil Raja Dhanigaivel

摘要

The tensile, flexural, and interlaminar shear strengths of composites reinforced with Palmyra palm fiber (PPF) and with 0, 1.5, 3 and 4.5 wt% of silicon dioxide nanoparticles (SiO2 NPs) were studied at the elevated temperatures (25, 30, 60, 90, and 100ºC) simulating in-service conditions. The results revealed that incorporating 3 wt% of SiO2 NPs significantly improved the composite tensile strength (61.56 MPa), tensile modulus (6.01 GPa), and interlaminar shear strength (13.26 MPa) at room temperature. The flexural strength increased at 3 wt% of SiO2 NPs (58.96 MPa), but decreased at 4.5 wt% of SiO2 NPs (54.12 MPa), representing a threshold beyond which nanoparticle accumulation may reduce performance.