خواص فیزیکی و مکانیکی چوب پلاستیک بر پایه خاک اره MDF با افزودنی‌های خاک اره زغال، گوگرد و پودر لاستیک بازیافتی

نوع مقاله : مقاله پژوهشی

نویسندگان

1 دانشجو دکتری مهندسی صنایع چوب و فراورده‌های سلولزی، دانشکده منابع طبیعی، دانشگاه زابل و هنرآموز صنایع چوب هنرستان شهید چمران

2 علوم وصنایع چوب و کاغذ

3 دانشیار گروه علوم و صنایع چوب و کاغذ، دانشکده منابع طبیعی، دانشگاه زابل

10.22034/ijwp.2023.2010753.1628

چکیده

در این پژوهش، اثر خاک اره MDF با افزودنی‌های خاک اره زغال، گوگرد و پودر لاستیک بازیافتی بر خصوصیات فیزیکی و مکانیکی کامپوزیت چوب پلاستیک مورد بررسی قرار گرفت. پودر لاستیک بازیافتی در سه سطح صفر، 5/2 و 5 درصد و گوگرد در سه سطح صفر، 2 و 4 درصد همچنین خاک اره زغال و MDF با نسبت‌های 30 و 60 درصد مورد استفاده قرار گرفت. مواد در دستگاه میکسر گشتاوری مخلوط و پس از خارج کردن و سرد شدن مواد با دستگاه خردکن نیمه صنعتی به گرانول تبدیل و گرانول‌ها در داخل قالب ریخته و زیر پرس گرم قرار داده و در نهایت از پرس سرد استفاده شد. خواص مکانیکی شامل مقاومت خمشی، کششی و فشاری ، مدول خمشی و کششی همچنین خواص فیزیکی شامل جذب آب، واکشیدگی ضخامت 2 و 24 ساعت اندازه گیری شد. نتایج نشان داد افزودن 60 درصد خاک اره MDF موجب افزایش مقاومت و مدول شد اما با افزایش پودر لاستیک و گوگرد مقاومت و مدول کاهش یافت. جذب آب و واکشیدگی ضخامت 2 و 24 ساعت با افزدون 60 درصد خاک اره زغال، 4 درصد گوگرد و 5 درصد پودر لاستیک بازیافتی کاهش یافت. نتایج مقاومت خمشی، کششی و فشاری توسط میکروسکوب الکتریکی مورد تایید قرار گرفت.

کلیدواژه‌ها

موضوعات


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