تحلیل و بررسی نانو کامپوزیت های اپوکسی حاوی نانو الیاف کربنی اصلاح شده : مطالعه پایداری گرمایی و رفتارتخریب گرمایی
محورهای موضوعی : پليمرها و نانوفناوریمحمدحسین کرمی 1 * , امید معینی جزنی 2 * , محمد علی اطمینانی اصفهانی 3
1 - گروه مهندسی شیمی، دانشکده فنی و مهندسی، دانشگاه اصفهان، صندوق پستی 73441 - ۸۱۷۴۶، اصفهان، ایران
2 - گروه مهندسی شیمی، دانشکده فنی و مهندسی، دانشگاه اصفهان، صندوق پستی 81746-73441 ، اصفهان، ایران
3 - گروه صنایع شیمیایی ، دانشگاه ملی مهارت، تهران، ایران
کلید واژه: رزین اپوکسی, نانو الیاف کربنی اصلاح شده , مورفولوژی, خواص مکانیکی, تخریب گرمایی,
چکیده مقاله :
نانو کامپوزیت‌های پلیمری به‌عنوان جایگزینی مناسب برای مواد فلزی و پلیمری شناخته می‌شوند و در بسیاری از موارد عملکرد بهتری دارند. این مواد به‌ویژه به دلیل سبکی، استحکام بالا و هزینه کم در صنایع مختلف از جمله حمل‌ونقل، خودروسازی، هوافضا و ساخت کشتی‌ها مورد استفاده قرار می‌گیرند. نتایج نشان می‌دهند که افزودن نانو الیاف کربنی به ماتریس رزین اپوکسی باعث بهبود قابل‌توجه خواص مکانیکی از جمله استحکام کششی، مدول و چقرمگی شکست می‌شود. همچنین نانو الیاف کربنی موجب افزایش پایداری حرارتی رزین‌ها و کاهش سرعت تخریب آنها در دماهای بالا می‌گردد. استفاده از روش‌های نوین همچون اصلاح سطحی نانو الیاف و تکنیک‌های مخلوط‌سازی پیشرفته، بهبود قابل‌توجهی در پراکندگی نانو الیاف در ماتریس رزین اپوکسی و افزایش خواص مکانیکی و حرارتی کامپوزیت‌ها به همراه دارد. نتایج پژوهش ها نشان می‌دهد که نانو الیاف کربنی به‌ویژه در مقایسه با دیگر مواد تقویت‌کننده، عملکرد بهتری در حفظ خواص حرارتی و مکانیکی کامپوزیت‌های اپوکسی دارند. این تحقیق به تحلیل تأثیر نانو الیاف کربنی اصلاح شده بر مورفولوژی، خواص مکانیکی، پایداری حرارتی و رفتار تخریب گرمایی رزین اپوکسی و هیبرید نانوکامپوزیت‌های اپوکسی می‌پردازد. همچنین این پژوهش به مرور پیشرفت‌های اخیر و نتایج مهم در زمینه ساخت نانوکامپوزیت‌های اپوکسی حاوی نانو الیاف کربنی اصلاح شده خواهد پرداخت.
Polymeric nanocomposites are increasingly recognized as a suitable alternative to traditional metallic and polymeric materials and often offer better overall performance in many cases. These materials are particularly used in various industries such as transportation, automotive, aerospace, and shipbuilding due to their light weight, high strength, and low cost. The results show that the addition of carbon nanofibers to the epoxy resin matrix significantly improves mechanical properties, including tensile strength, modulus, and fracture toughness. Furthermore, carbon nanofibers enhance the thermal stability of resins and reduce their degradation rate at high temperatures. The use of modern methods such as surface modification of nanofibers and advanced mixing techniques leads to significant improvements in the dispersion of nanofibers in the epoxy resin matrix and enhances the mechanical and thermal properties of the composites. Research results indicate that carbon nanofibers, especially compared to other reinforcing materials, perform better in preserving the thermal and mechanical properties of epoxy composites. This study analyzes the impact of carbon nanofibers on the morphology, mechanical properties, thermal stability, and thermal degradation behavior of epoxy resin and hybrid epoxy nanocomposites. The research additionally reviews recent advancements and significant results in the innovative development of epoxy nanocomposites containing carbon nanofibers, highlighting their potential applications and benefits.
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