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<p>This study investigates the mechanical, thermal, and moisture resistance characteristics of carbon/Kevlar/kenaf (CKK) sequentially stacked fiber-reinforced epoxy composites incorporated with peanut shell powder as a natural filler. Two types of composites samples were evaluated: chemically treated (CKK3/C3) and untreated (CKK4/F4), for their tensile, flexural, impact, and hardness performance. The composite C3 (treated with the chemical) was much better than its untreated counterpart F4 in terms of tensile strength (302 MPa vs. 268 MPa), flexural strength (326 MPa vs. 280 MPa), and impact strength (68 J vs. 54 J). The superior load transfer, energy absorption, and hardness (132 Shore D) were ascribable to the enhanced interfacial bonding as a result of NaOH treatment. Thermogravimetric analysis indicated further improved thermal stability in treated composites with increased char residue (20–25 %) and gradual degradation profile.</p>

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Mechanical and thermal studies of chemically treated and untreated sequentially-stacked carbon/Kevlar/kenaf epoxy composites with peanut shell powder filler

  • 期刊论文

  • 发表日期：

    2026年4月9日

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  • G. Godwin,
  • G. Antony Miraculas,
  • Sujin Jose Arul,
  • Sravanthi K.

摘要

This study investigates the mechanical, thermal, and moisture resistance characteristics of carbon/Kevlar/kenaf (CKK) sequentially stacked fiber-reinforced epoxy composites incorporated with peanut shell powder as a natural filler. Two types of composites samples were evaluated: chemically treated (CKK3/C3) and untreated (CKK4/F4), for their tensile, flexural, impact, and hardness performance. The composite C3 (treated with the chemical) was much better than its untreated counterpart F4 in terms of tensile strength (302 MPa vs. 268 MPa), flexural strength (326 MPa vs. 280 MPa), and impact strength (68 J vs. 54 J). The superior load transfer, energy absorption, and hardness (132 Shore D) were ascribable to the enhanced interfacial bonding as a result of NaOH treatment. Thermogravimetric analysis indicated further improved thermal stability in treated composites with increased char residue (20–25 %) and gradual degradation profile.