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For the field of electrical insulation, epoxy resin materials are widely used in the power industry. In recent years, new materials such as vitrimer, providing a possibility for the efficient recycling of epoxy resin insulating material. In this work, the thermal and compression recycle process of vitrimer particles were simulated by discrete element to predict the thermal and mechanical coupling behavior of the particles during thermal recycle. The thermal remodeling process of epoxy vitrimer particles were simulated by using discrete element simulation method and EDEM software to analyze the mechanism of solid-solid interfacial reactions under the action of thermal and mechanical coupling. During the thermal reshaping process, the tangential pressure between epoxy vitrimer particles was greater than the normal pressure, leading to tangential fusion throughout. The thermal imaging analysis revealed a distinct gradient in the particle temperature distribution, with the central particles of the inner layer exhibiting significantly lower temperatures compared to their outer layer counterparts.

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Thermal Recycle Process of Macro Vitrimer Particles Based on EDEM Discrete Element Simulation

  • 会议论文

  • 发表日期：

    2025年

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  • Wei Guo,
  • Zhicheng Wu,
  • Chenyan Wang,
  • Chao Gao,
  • Guoli Wang,
  • Qiaogen Zhang

摘要

For the field of electrical insulation, epoxy resin materials are widely used in the power industry. In recent years, new materials such as vitrimer, providing a possibility for the efficient recycling of epoxy resin insulating material. In this work, the thermal and compression recycle process of vitrimer particles were simulated by discrete element to predict the thermal and mechanical coupling behavior of the particles during thermal recycle. The thermal remodeling process of epoxy vitrimer particles were simulated by using discrete element simulation method and EDEM software to analyze the mechanism of solid-solid interfacial reactions under the action of thermal and mechanical coupling. During the thermal reshaping process, the tangential pressure between epoxy vitrimer particles was greater than the normal pressure, leading to tangential fusion throughout. The thermal imaging analysis revealed a distinct gradient in the particle temperature distribution, with the central particles of the inner layer exhibiting significantly lower temperatures compared to their outer layer counterparts.