ارزیابی شکل‏ های مختلف چسب حاصل از فوم پلی‌استایرن ضایعاتی در ساخت تخته‌لایه

نوع مقاله : مقاله پژوهشی

نویسندگان

گروه علوم و صنایع چوب و کاغذ، دانشکدة منابع طبیعی و علوم دریایی، دانشگاه تربیت مدرس، نور، ایران.

10.22059/jfwp.2025.393908.1346

چکیده

در این مطالعه، به بررسی ساخت تخته ­لایه از لایه­ های گونة چوبی صنوبر و چسب گرمانرم حاصل از فوم بازیافتی پلی‎استایرن پرداخته شده است. چسب مورد استفاده در چهار شکل مختلف شامل فیلم حاصل از ذوب فوم، فیلم حاصل از انحلال فوم در حلال طبیعی دی لیمونن بدون سازگارکننده، فیلم حاصل از انحلال فوم در حلال دی لیمونن با سازگارکننده (استایرن مالئیک انیدرید و در سطح 5 درصد) و فوم در شکل اولیة خود به‌عنوان چسب، مورد استفاده قرار گرفت. ویژگی­های شاخص جریان مذاب، وزن مولکولی و طیف‌سنجی فروسرخ تبدیل فوریه (FTIR) فیلم­ های پلیمری و فوم پلی‌استاین بررسی شد. براساس نتایج، شاخص جریان مذاب فیلم ­های پلیمری به‌ترتیب با افزوده شدن مادة سازگار کننده، انحلال و ذوب فوم به‌طور قابل توجهی افزایش و میانگین ­های وزن مولکولی کاهش یافت. نتایج FTIR نشان‌دهندة تغییرات ساختاری، ایجاد و افزایش شدت برخی پیک­ ها با توجه به انحلال، ذوب و استفاده از سازگار کننده در چسب می ­باشد. نتایج نشان داد که تخته ­های ساخته شده با فیلم پلیمری با و بدون مادة سازگارکننده، خواص فیزیکی و مکانیکی بهتری نسبت به سایر شکل ‏های استفاده از فوم پلی‏ استایرن داشته است. به‌طور کلی، تخته‌لایه ساخته شده با فیلم پلیمری حاصل از انحلال فوم در لیمونن طبق استاندارد EN314-2 برای کاربردهای داخل ساختمان مناسب برآورده شد. در نمونه تخته­‌لایه ساخته شده با فیلم پلیمری حاوی 5 درصد سازگار کننده نیز مقاومت برشی فراتر از الزامات استاندارد (حداقل 1 مگاپاسکال) است و پتانسیل به‌کارگیری در فضای خارج از ساختمان را دارد.

کلیدواژه‌ها

موضوعات


عنوان مقاله [English]

Evaluation of different types of wood glue derived from waste polystyrene foam in plywood manufacturing

نویسندگان [English]

  • Habib Noori
  • Ali Shalbafan
  • Saeed Kazemi-Najafi
Department of Wood and Paper Science and Technology, Faculty of Natural Resources and Marine Sciences, Tarbiat Modares University, Noor, Iran.
چکیده [English]

This study investigated the production of plywood from poplar veneers and polymer films derived from waste polystyrene foam. The adhesive was prepared in four forms: film obtained by melting the foam, film obtained by dissolving the foam in the natural solvent d-limonene without compatibilizer, film obtained by dissolving the foam in d-limonene with compatibilizer (styrene maleic anhydride at 5%), and the original foam used directly as adhesive. The properties of the polymer films and polystyrene foam (as reference) were evaluated by measuring melt index, molecular weight, and Fourier Transform Infrared Spectroscopy (FTIR). The results showed that the melt index of the polymer films increased significantly with the addition of compatibilizer, as well as through dissolution and melting, while the average molecular weight decreased. FTIR analysis revealed structural changes and the appearance or intensification of several peaks due to dissolution, melting, and compatibilizer addition. Plywood bonded with polymer films, with or without compatibilizer, exhibited better physical and mechanical properties than panels bonded with unprocessed foam. Overall, plywood made with polymer film obtained by dissolving foam in limonene was suitable for indoor use according to EN 314-2. Panels bonded with polymer film containing 5% compatibilizer also achieved shear strength exceeding the standard requirement (1 MPa), indicating potential suitability for outdoor applications.

کلیدواژه‌ها [English]

  • Compatibilizer
  • Melting
  • Plywood
  • Recycling
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