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<p>In this work, zinc borate (B<sub>2</sub>O<sub>6</sub>Zn<sub>3</sub>) was added in varying weight proportion of 0, 4, 8, and 12 wt.% to epoxy with chopped basalt fibers (CBFs) to form composites through compression molding technique. Scanning electron microscope (SEM) and energy-dispersive analysis of X-ray (EDAX) investigations were used to investigate the morphology of the composites fabricated, revealing the chemical composition and dispersion of zinc borate particles. The influence of zinc borate addition on the mechanical characteristics of the composites was also investigated as per ASTM standards, including density, hardness, tensile strength, compressive strength, impact strength, and wear behavior. Pin-on-disk wear apparatus was used to study the wear performance of the composites. Addition of B<sub>2</sub>O<sub>6</sub>Zn<sub>3</sub> in CBF-B<sub>2</sub>O<sub>6</sub>Zn<sub>3</sub> epoxy matrix improved the mechanical properties and wear resistance. The maximum hardness, tensile strength, compressive strength, and impact strength values obtained by addition of 12 wt.% B<sub>2</sub>O<sub>6</sub>Zn<sub>3</sub> were 2.0928&#xa0;g/cc, 74 HV, 237 Mpa, 214 Mpa, and 38&#xa0;kJ/m<sup>2</sup>. Using Taguchi L16 array, the most significant variable to effect the wear resistance of the CBF-B<sub>2</sub>O<sub>6</sub>Zn<sub>3</sub> epoxy composite is investigated and optimized. The worn surface scanning electron microscope (SEM) analysis confirmed fiber exposure and matrix smearing<b>,</b> suggesting adhesive wear<b>,</b> abrasive wear, and fiber–matrix interfacial failure<b>.</b></p>

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Effect of Zinc Borate (B2O6Zn3) on Microstructure and Properties of Chopped Basalt Fiber-Reinforced Epoxy-Based Composites

  • 期刊论文

  • 发表日期：

    2026年4月13日

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  • P. C. Santhosh Kumar,
  • Manickam Ravichandran,
  • Vinayagam Mohanavel,
  • Rajendran Selvabharathi

摘要

In this work, zinc borate (B2O6Zn3) was added in varying weight proportion of 0, 4, 8, and 12 wt.% to epoxy with chopped basalt fibers (CBFs) to form composites through compression molding technique. Scanning electron microscope (SEM) and energy-dispersive analysis of X-ray (EDAX) investigations were used to investigate the morphology of the composites fabricated, revealing the chemical composition and dispersion of zinc borate particles. The influence of zinc borate addition on the mechanical characteristics of the composites was also investigated as per ASTM standards, including density, hardness, tensile strength, compressive strength, impact strength, and wear behavior. Pin-on-disk wear apparatus was used to study the wear performance of the composites. Addition of B2O6Zn3 in CBF-B2O6Zn3 epoxy matrix improved the mechanical properties and wear resistance. The maximum hardness, tensile strength, compressive strength, and impact strength values obtained by addition of 12 wt.% B2O6Zn3 were 2.0928 g/cc, 74 HV, 237 Mpa, 214 Mpa, and 38 kJ/m2. Using Taguchi L16 array, the most significant variable to effect the wear resistance of the CBF-B2O6Zn3 epoxy composite is investigated and optimized. The worn surface scanning electron microscope (SEM) analysis confirmed fiber exposure and matrix smearing, suggesting adhesive wear, abrasive wear, and fiber–matrix interfacial failure.