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<p>This study investigates the feasibility of using agricultural waste cotton seed particles (CSP) as a sustainable filler in epoxy composites for automotive applications. Epoxy-CSP composites containing 0–20 wt.% CSP were fabricated and evaluated for mechanical, dielectric, wear, and acoustic performances along with the thermogravimetric analysis (TGA) and differential scanning calorimetric (DSC) analysis. The results show that the incorporation of 12 wt.% CSP significantly enhances tensile and flexural strengths, impact resistance, and microhardness compared to neat epoxy. Finite element analysis confirmed good agreement with experimental mechanical results. Erosion wear behavior was analyzed under varying operating conditions, and optimization and prediction of the wear rate were achieved using response surface methodology and artificial neural networks. SEM analysis revealed a semi-brittle erosion mechanism with maximum material loss at a 60º impingement angle. Dielectric and acoustic properties improved with increasing CSP content, with a notable increase in sound absorption at low frequencies. Overall, the findings demonstrate that CSP-filled epoxy composites offer improved multifunctional performance while promoting agricultural waste utilization, making them suitable for lightweight automotive components.</p>

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Experimental and Computational Analysis of Epoxy-Cotton Seed Particle Composites: A Multi-Property Study for Automotive Use

  • 期刊论文

  • 发表日期：

    2026年2月21日

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  • Abhilash Purohit,
  • Priyabrat Pradhan,
  • Suresh Palanimuthu,
  • Arvind Kumar,
  • Manav Kumar,
  • Nav Rattan

摘要

This study investigates the feasibility of using agricultural waste cotton seed particles (CSP) as a sustainable filler in epoxy composites for automotive applications. Epoxy-CSP composites containing 0–20 wt.% CSP were fabricated and evaluated for mechanical, dielectric, wear, and acoustic performances along with the thermogravimetric analysis (TGA) and differential scanning calorimetric (DSC) analysis. The results show that the incorporation of 12 wt.% CSP significantly enhances tensile and flexural strengths, impact resistance, and microhardness compared to neat epoxy. Finite element analysis confirmed good agreement with experimental mechanical results. Erosion wear behavior was analyzed under varying operating conditions, and optimization and prediction of the wear rate were achieved using response surface methodology and artificial neural networks. SEM analysis revealed a semi-brittle erosion mechanism with maximum material loss at a 60º impingement angle. Dielectric and acoustic properties improved with increasing CSP content, with a notable increase in sound absorption at low frequencies. Overall, the findings demonstrate that CSP-filled epoxy composites offer improved multifunctional performance while promoting agricultural waste utilization, making them suitable for lightweight automotive components.