بررسی خواص حرارتی، مکانیکی و الکتریکی کامپوزیت‌های اپوکسی پر‌شده با نانو لوله‌های کربنی اصلاح شده

نوع مقاله : مقاله پژوهشی

نویسندگان

1 دانشکده مهندسی نساجی، واحد یزد، دانشگاه آزاد اسلامی، یزد، ایران

2 دانشکده مهندسی نساجی، واحد قائمشهر، دانشگاه آزاد اسلامی، قائمشهر، ایران

چکیده

یکی از مشکلات استفاده از کامپوزیت‌های اپوکسی برهمکنش ضعیف میان نانو پرکننده‌های کربنی و رزین اپوکسی می‌باشد. در این پژوهش، تاثیر عملیات سطحی کرونا بر خواص کامپوزیت‌های اپوکسی تقویت شده با نانو لوله‌های کربنی مورد بررسی قرار گرفته است. ساختار شیمیایی سطحی و شکل‌شناسی نانوکامپوزیت‌های اپوکسی با کمک طیف‌سنجی مادون قرمز و میکروسکوپ الکترونی روبشی مورد بررسی قرار گرفت. خواص حرارتی، مکانیکی، ویسکوالاستیک و رسانش نانوکامپوزیت‌ها نیز بررسی شد. نتایج بررسی نشان داد که اصلاح سطحی نانو لوله‌های کربنی به کمک فرآیند کرونا از تجمع نانو لوله‌های کربنی جلوگیری کرده و توزیع آن‌ها در ماتریس اپوکسی را بهبود می‌دهد. این امر می‌تواند منجر به افزایش برهم‌کنش‌های بین سطحی، بهبود پایداری حرارتی، خواص مکانیکی و رسانش الکتریکی نانوکامپوزیت شود.

کلیدواژه‌ها

عنوان مقاله [English]

Investigation of thermal, mechanical and electrical properties of modified carbon nanotubes reinforced epoxy composites

نویسندگان [English]

  • Hamid Reza Gholshan Tafti 1
  • Mohammad Mirjalili 1
  • Peiman Valipour 2
1 Department of Textile Engineering Yazd Branch, Islamic Azad University Yazd, Iran
2 Department of Textile and Apparel Engineering, Qaemshahr Branch, Islamic Azad University, Qaemshahr, Iran
چکیده [English]

Poor interaction between fillers and epoxy matrix is one of the major limitations to developing epoxy composites usage. In this study, effect of corona process on carbon nanotubes reinforced epoxy composite properties was evaluated. The structure and morphology of epoxy composites has been examined by scanning electron microscopy (SEM) and its chemical structure has been elucidated by Fourier transform infrared spectroscopy (FT-IR). Thermal, mechanical and electrical properties of the prepared composites were also assessed. To analyze the relationship between the interfacial interactions in the nanocomposites and tensile performance, a theoretical model germane to the mechanical behaviors of the nanocomposite was applied. According to the results, it was found that the corona modification of carbon nanotubes resulted in breaking of fillers agglomerates and improved their dispersion. The mechanical properties and thermal stability of modified samples were improved with respect to unmodified ones. Moreover, the prepared epoxy composite possessed excellent electrical conductivity.

کلیدواژه‌ها [English]

  • corona process
  • carbon nanotubes
  • surface interaction
  • epoxy

مراجع

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سابقه مقاله

  • تاریخ دریافت: 16 اردیبهشت 1398
  • تاریخ بازنگری: 26 اردیبهشت 1398
  • تاریخ پذیرش: 30 خرداد 1398

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