بررسی ویژگی‌های مکانیکی چندسازة پلی‌پروپیلن تقویت‌شده با آرد ساقة توتون

نوع مقاله: مقاله پژوهشی

نویسندگان

1 دانشجوی کارشناسی ارشد فرآورده‌های چندسازة چوبی، دانشکدة کشاورزی و منابع طبیعی دانشگاه گنبد کاووس، گنبد، ایران

2 استادیار گروه علوم و صنایع چوب و کاغذ دانشگاه گنبد کاووس، دانشکدة کشاورزی و منابع طبیعی دانشگاه گنبد کاووس، گنبد، ایران

3 دانشیار گروه علوم و صنایع چوب و کاغذ دانشگاه تهران، دانشکدة منابع طبیعی دانشگاه تهران، کرج، ایران

چکیده

در این مطالعه، با توجه به کاشت وسیع توتون در استان گلستان و حجم بالای پسماندهای حاصل از ساقة آن، که بدون مصرف است و سوزانده می‌شود، و با هدف استفادة مفید از این پسماندها و به دنبال آن کاهش مسائل زیست‌محیطی، خواص مکانیکی چندسازة پلی‌پروپیلن تقویت‌شده با آرد ساقة توتون بررسی شد. بدین منظور، از اندازه‌های مختلف آرد ساقة توتون (به منزلة مادة تقویت‌کننده) و پلیمر پلی‌پروپیلن (به منزلة مادة زمینه) شامل70:30، 60:40، و 50:50 و MAPP به منزلة مادة جفت‌‌کننده در دو سطح 4 و 6 درصد استفاده شد. نتایج نشان داد با افزایش مقدار آرد ساقة توتون مقاومت کششی کاهش اما مدول کششی افزایش می‌یابد. همچنین، افزایش مقدار جفت‌کننده بر مقاومت کششی نمونه‌ها تأثیر مثبت گذاشت. مقاومت و مدول خمشی نمونه‌ها نیز با افزایش مقدار ساقة توتون و جفت‌کننده افزایش یافت. از سوی دیگر، بین مقاومت به ضربة چندسازه‌های حاصل از سطوح مختلف مصرف آرد ساقة توتون و جفت‌کننده اختلاف معناداری مشاهده نشد. بنابراین، استفاده از 50 درصد آرد ساقة توتون به منزلة مادة طبیعی و زیست تخریب‌پذیر همراه 6 درصد جفت‌کننده برای تولید چندسازة چوب‌ـ پلاستیک با خواص مکانیکی مطلوب توصیه می‌شود.

کلیدواژه‌ها


عنوان مقاله [English]

Investigation on Mechanical Properties of Polypropylene Composite Reinforced with Tobacco Stalk

نویسندگان [English]

  • Mohamad Gholizadeh 1
  • Loya Jamalirad 2
  • Hedayatollah Aminian 2
  • Sahab Hedjazi 3
1 M.Sc. Student, Department of Wood and Paper Science and Engineering, Faculty of Agriculture and Natural Resources, Gonbad Kavous University, Gonbad, I.R. Iran
2 Assistant Professor, Department of Wood and Paper Science and Engineering, Faculty of Agriculture and Natural Resources, Gonbad Kavous University, Gonbad, I.R. Iran
3 Associate Professor, Department of Wood and Paper Science and Engineering, Faculty of Natural Resources, University of Tehran, Karaj, I.R. Iran
چکیده [English]

Tobacco is planted extensively in Golestan province and high volume of its stem wastes remained without using and it is burned. As a useful purpose of these wastes and to reduce the environmental problems, in this the mechanical properties of polypropylene composites reinforced with tobacco stalk flour were studied. For this purpose, the tobacco stalk flour as the reinforcement, in three levels of 30, 40 and 50%, maleic anhydride grafted polypropylene as a coupling agent in two levels of 4 and 6% as variable factors were used. The results showed that with increasing the amount of tobacco stalk flour, tensile stress decreased significantly but tensile modulus increased. Also increasing the amount of coupling agent improved tensile strength. Bending strength and bending modulus increased with increasing the amount of tobacco stalk flour and coupling agent. In the case of impact strength, no significant effects were observed between the different levels of the treatments. Therefore it is recommended to use50 % tobacco stalk flour as a natural and biodegradable material with 6% coupling agent to make wood-plastic composite with desired mechanical properties.
 

کلیدواژه‌ها [English]

  • Wood-plastic composite
  • Polypropylene
  • Tobacco stalk flour
  • Coupling agent
  • biodegradable
 

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