Improving thermal and mechanical properties of polyester used in industrial coils

Articles in Press

Document Type : Original Article

Authors

1 Assistant Professor, Department of Mechanical Engineering, Technical and Vocational University (TVU), Tehran, Iran.

2 Assistant Professor, Department of Mechanical Engineering, Kermanshah University of Technology, Kermanshah, Iran.

3 Assistant Professor, Department of Chemical Industry, Technical and Vocational University (TVU), Tehran, Iran.

10.48301/kssa.2024.415149.2695

Abstract

Today, the use of polymer materials in the structure of electronic coils is very common. In addition to keeping the electronic components in their position, the polymer material must be able to transfer the generated heat from the heart of the core to the outside and prevent its temperature from rising beyond the permissible limit. Since unsaturated polyester is used in the researched sample, the aim of this research is to achieve a composition that is comparable to high quality foreign samples in terms of mechanical and thermal properties. Therefore, polyester resin was reinforced with different percentages of chopped glass fibers and alumina particles to improve its mechanical and thermal properties and use it in industrial coils. Tensile, bending, thermal conductivity and wear tests were performed on different samples. The results of experimental studies showed that by adding 40% alumina, the heat transfer coefficient of polyester increased from 0.173 to 0.469 W/mK. Also, for 70% of chopped glass fibers, the thermal conductivity of polyester improved from 0.173 to 0.394 W/mK. Adding alumina particles and glass fibers generally increased the Young's modulus of the composite. While, the tensile strength of the resin was not only not improved but also decreased by adding alumina particles or glass fibers. Different behaviors were observed in the wear test of samples with different percentages of alumina and glass fibers.

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Karafan Quarterly Scientific Journal

Articles in Press, Accepted Manuscript
Available Online from 17 February 2024

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History

  • Receive Date: 20 October 2023
  • Revise Date: 30 December 2023
  • Accept Date: 12 February 2024

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