نوع مقاله : مقاله پژوهشی (کاربردی)
نویسندگان
1 استادیار، گروه مهندسی مکانیک، دانشگاه فنی و حرفه‌ای، تهران، ایران.
2 استادیار، گروه مهندسی مکانیک، دانشگاه صنعتی کرمانشاه، کرمانشاه، ایران.
3 استادیار، گروه صنایع شیمیایی، دانشگاه فنی و حرفه‌ای، تهران، ایران.
چکیده
کلیدواژه‌ها
موضوعات
عنوان مقاله [English]
نویسندگان [English]
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.
کلیدواژه‌ها [English]
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