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<p>The increasing accumulation of electronic waste (e-waste) poses significant environmental and health hazards, necessitating innovative recycling strategies. In this study, waste cathode ray tube (CRT) panel glass powder is valorised as a sustainable filler in polymer composites, promoting a circular economy approach. The e-waste filler is prepared through ball milling of CRT panel glass and added with epoxy matrix through conventional casting method. The weight% of the CRT filler is varied as 0, 5, 10 and 15 in the epoxy matrix. The fabricated composites were subjected to accelerated weathering to assess their ability to withstand environmental conditions. The fabricated and accelerated weathered samples were systematically analysed for their mechanical and wear performance through tensile, flexural, impact, interlaminar shear strength (ILSS), Shore D hardness and two body wear tests. The tensile and flexural modulus values were found increasing with filler addition, resulting in increased stiffness and rigidity. Maximum tensile and flexural modulus of 1820.75&#xa0;MPa (for 10% CRT) and 5281.27&#xa0;MPa (for 15% CRT) are observed, which is 56.8% and 78.30% higher than neat epoxy. Shore D hardness and wear resistance also increased with CRT filler addition. However, incorporating CRT glass filler in epoxy shows reductions in elongation, tensile, flexural and interlaminar shear strength. Properties of weathered samples were lesser than the non-weathered one, particularly at the higher filler loadings. Despite reduced mechanical properties, the enhanced hardness and wear resistance make these composites suitable for electronic casings and wear-resistant applications while supporting sustainable material development and waste reduction.</p>

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Valorisation of e-waste CRT glass in polymer composites: sustainable material development and waste reduction

  • 期刊论文

  • 发表日期：

    2025年12月4日

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  • Gopal Pudhupalayam Muthukutti,
  • Manoj Kumar Singh,
  • Sathish Kumar Palaniappan,
  • Kavimani Vijayananth,
  • Sanjay Mavinkere Rangappa,
  • Suchart Siengchin

摘要

The increasing accumulation of electronic waste (e-waste) poses significant environmental and health hazards, necessitating innovative recycling strategies. In this study, waste cathode ray tube (CRT) panel glass powder is valorised as a sustainable filler in polymer composites, promoting a circular economy approach. The e-waste filler is prepared through ball milling of CRT panel glass and added with epoxy matrix through conventional casting method. The weight% of the CRT filler is varied as 0, 5, 10 and 15 in the epoxy matrix. The fabricated composites were subjected to accelerated weathering to assess their ability to withstand environmental conditions. The fabricated and accelerated weathered samples were systematically analysed for their mechanical and wear performance through tensile, flexural, impact, interlaminar shear strength (ILSS), Shore D hardness and two body wear tests. The tensile and flexural modulus values were found increasing with filler addition, resulting in increased stiffness and rigidity. Maximum tensile and flexural modulus of 1820.75 MPa (for 10% CRT) and 5281.27 MPa (for 15% CRT) are observed, which is 56.8% and 78.30% higher than neat epoxy. Shore D hardness and wear resistance also increased with CRT filler addition. However, incorporating CRT glass filler in epoxy shows reductions in elongation, tensile, flexural and interlaminar shear strength. Properties of weathered samples were lesser than the non-weathered one, particularly at the higher filler loadings. Despite reduced mechanical properties, the enhanced hardness and wear resistance make these composites suitable for electronic casings and wear-resistant applications while supporting sustainable material development and waste reduction.