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<p>This research investigates the mechanical, wear, thermal, and degradation properties of vinyl ester resin composites reinforced with 40&#xa0;vol.% silane-treated <i>Miscanthus</i> fiber and varying concentrations of CuO (copper oxide) and NiO (nickel oxide). Specimen PMC2 (2&#xa0;vol.% CuO) exhibited the highest mechanical strength, with a tensile strength of 141&#xa0;MPa, flexural strength of 157&#xa0;MPa, impact strength of 4.2&#xa0;J, and hardness of 82 Shore-D, due to improved interfacial bonding and stress distribution. Specimen PMC3 (4&#xa0;vol.% CuO) demonstrated the best wear resistance and lowest thermal conductivity, with a wear rate of 0.018&#xa0;mm<sup>3</sup> Nm<sup>–1</sup> and thermal conductivity of 0.24&#xa0;W m<sup>–1</sup> K<sup>–1</sup>, confirming its suitability for tribological and thermal insulation applications. Specimen PMN3 (4&#xa0;vol.% NiO) exhibited the highest thermal stability, with a TG% of 97% at 431&#xa0;°C and the lowest DTG% of 5.5% at 421&#xa0;°C, due to the ceramic nature of NiO. SEM analysis confirmed smoother wear surfaces in PMC3 and minimal micro-cracks in PMN3, validating their superior performance. These findings suggest that CuO enhances mechanical, wear, and thermal properties, while NiO significantly improves thermal stability, making these composites suitable for automotive, aerospace, and thermal insulation applications.</p>

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Role of biomass-extracted natural fiber and copper oxide/nickel oxide nanoparticle-reinforced vinyl ester composite and its characterization study

  • 期刊论文

  • 发表日期：

    2026年3月22日

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  • S. Manoj Kumar,
  • Dhandapany sendil Kumar,
  • M. Arul Murugan,
  • Yousef A. Baker El-Ebiary,
  • B. Sachuthananthan,
  • N. Nagabhooshanam,
  • Adduri S S M Sita Rama Murthy,
  • PritamKumar Das

摘要

This research investigates the mechanical, wear, thermal, and degradation properties of vinyl ester resin composites reinforced with 40 vol.% silane-treated Miscanthus fiber and varying concentrations of CuO (copper oxide) and NiO (nickel oxide). Specimen PMC2 (2 vol.% CuO) exhibited the highest mechanical strength, with a tensile strength of 141 MPa, flexural strength of 157 MPa, impact strength of 4.2 J, and hardness of 82 Shore-D, due to improved interfacial bonding and stress distribution. Specimen PMC3 (4 vol.% CuO) demonstrated the best wear resistance and lowest thermal conductivity, with a wear rate of 0.018 mm3 Nm–1 and thermal conductivity of 0.24 W m–1 K–1, confirming its suitability for tribological and thermal insulation applications. Specimen PMN3 (4 vol.% NiO) exhibited the highest thermal stability, with a TG% of 97% at 431 °C and the lowest DTG% of 5.5% at 421 °C, due to the ceramic nature of NiO. SEM analysis confirmed smoother wear surfaces in PMC3 and minimal micro-cracks in PMN3, validating their superior performance. These findings suggest that CuO enhances mechanical, wear, and thermal properties, while NiO significantly improves thermal stability, making these composites suitable for automotive, aerospace, and thermal insulation applications.