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<p>The main objective of this research is to study pineapple fiber and silane treated biosilica composites made from barley stalks and biochar derived from pineapple crowns, with the hope of using them in pipe industries. The composites underwent warm water aging at 50 ℃ for 30 days after being produced using the pre-preg process. The aged composites were tested for water absorption, flexural strength, hardness, flat-wise and edge-wise compression, and it is test are conformity with ASTM requirements. According to the results, the composite with the highest mechanical qualities was the 3 vol% biosilica-reinforced (RS3) variety, which exhibited 32.40&#xa0;N/mm² flexural strength, 18.90&#xa0;N/mm² flat-wise compression strength, and 21.80&#xa0;N/mm² edge-wise compression strength. This suggests that, in comparison to composites supplemented with biochar, the mechanical performance was enhanced by the uniform distribution of biosilica. Composites containing 5 vol% biosilica (RS5) had the highest measured hardness rating of 79.3 Shore-D. Because of their higher stiffness and rigidity, decreased porosity, and improved interfacial bonding, biosilica-reinforced composites have better mechanical properties than non-reinforced ones. On the other hand, biochar’s porous and uneven structure has the potential to decrease strength, degrade interfacial adhesion, and generate stress concentrations on the composite. Biosilica also performs better strength features under different loading circumstances because it is more thermally stable. In addition, the composite that was reinforced with 40% pineapple fiber (R) had the lowest water absorption of 1.02% because the effects of warm water aging were successfully controlled by the silane treatment. The mechanical integrity of the composite was sustained throughout time due to the mitigation of hydrolytic degradation and the enhancement of fiber-matrix adhesion mainly by silane treatment, which provided reduced moisture uptake. Overall, the composites reinforced with biosilica outperformed the composite reinforced with biochar, on the whole.</p>

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Effect of Warm Water Aging on Surface Modified Bio-silica and Biochar with Pineapple fiber Reinforced Polyester Composite

  • 期刊论文

  • 发表日期：

    2025年7月10日

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  • R. Bharath,
  • P. A. Jeeva

摘要

The main objective of this research is to study pineapple fiber and silane treated biosilica composites made from barley stalks and biochar derived from pineapple crowns, with the hope of using them in pipe industries. The composites underwent warm water aging at 50 ℃ for 30 days after being produced using the pre-preg process. The aged composites were tested for water absorption, flexural strength, hardness, flat-wise and edge-wise compression, and it is test are conformity with ASTM requirements. According to the results, the composite with the highest mechanical qualities was the 3 vol% biosilica-reinforced (RS3) variety, which exhibited 32.40 N/mm² flexural strength, 18.90 N/mm² flat-wise compression strength, and 21.80 N/mm² edge-wise compression strength. This suggests that, in comparison to composites supplemented with biochar, the mechanical performance was enhanced by the uniform distribution of biosilica. Composites containing 5 vol% biosilica (RS5) had the highest measured hardness rating of 79.3 Shore-D. Because of their higher stiffness and rigidity, decreased porosity, and improved interfacial bonding, biosilica-reinforced composites have better mechanical properties than non-reinforced ones. On the other hand, biochar’s porous and uneven structure has the potential to decrease strength, degrade interfacial adhesion, and generate stress concentrations on the composite. Biosilica also performs better strength features under different loading circumstances because it is more thermally stable. In addition, the composite that was reinforced with 40% pineapple fiber (R) had the lowest water absorption of 1.02% because the effects of warm water aging were successfully controlled by the silane treatment. The mechanical integrity of the composite was sustained throughout time due to the mitigation of hydrolytic degradation and the enhancement of fiber-matrix adhesion mainly by silane treatment, which provided reduced moisture uptake. Overall, the composites reinforced with biosilica outperformed the composite reinforced with biochar, on the whole.