بررسی تأثیر مقدار الیاف چوب درخت انگور و زمان پرس بر خواص کاربردی و زبری سطح تخته‌‌فیبر دانسیتة متوسط

نوع مقاله : مقاله پژوهشی

نویسندگان

1 کارشناس ارشد، گروه علوم و صنایع چوب و کاغذ، دانشکدة منابع طبیعی، دانشگاه تهران، کرج، ایران

2 استاد گروه علوم و صنایع چوب و کاغذ، دانشکدة منابع طبیعی، دانشگاه تهران، کرج، ایران

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

4 استاد دانشکدة فنی مهندسی، دانشگاه تهران، تهران، ایران

چکیده

در این تحقیق استفاده از الیاف چوب درخت انگور به صورت مخلوط با الیاف گونه‌های چوبی در ساخت تخته‌فیبر دانسیتة متوسط بررسی شد. زمان پرس در سه سطح 4 و 5 و 6 دقیقه و نسبت اختلاط الیاف چوب درخت انگور با الیاف چوب‌های جنگلی در سه سطح 0/100 و 30/70 و 60/40، به منزلة عوامل متغیر، بود. تخته‌ها به صورت همسان با دانسیتة 65/0 گرم بر سانتی‌متر مکعب و ضخامت 15 میلی‌متر ساخته شدند. زبری سطح و ویژگی‌های فیزیکی و مکانیکی تخته‌ها شامل مقاومت خمشی (MOR) و واکشیدگی ضخامت (TS) بررسی شد. نتایج نشان داد با افزایش مقدار الیاف چوب مو تا میزان 30 درصد زبری سطح و واکشیدگی ضخامت تخته‌ها افزایش می‌یابد؛ ولی با افزایش مقدار این الیاف تا 60 درصد این دو ویژگی کاهش پیدا می‌کند. مقاومت خمشی تخته‌ها با افزایش میزان الیاف چوب مو تا میزان 60 درصد کاهش یافت. افزایش زمان پرس تأثیر معناداری بر زبری سطح و ویژگی‌های فیزیکی و مکانیکی تخته‌ها نداشت.

کلیدواژه‌ها

عنوان مقاله [English]

The Effect of Vine Pruning Fibers Content and Press Time on some Functional Properties and Surface Roughness of Medium Density Fiberboard (MDF)

نویسندگان [English]

  • fatemeh rezaee 1
  • Ali Akbar Enayati 2
  • Mohammad Layeghi 3
  • Hmaidreza Ghasemi Monfared Rad 4
1 M.Sc. Graduate, Faculty of Natural Resources, University of Tehran, Karaj, I.R. Iran
2 Professor, Faculty of Natural Resources, University of Tehran, Karaj, I.R. Iran
3 Assistant Professor, Faculty of Natural Resources, University of Tehran, Karaj, I.R. Iran
4 Professor, Faculty of Engineering, University of Tehran, Tehran, I.R. Iran
چکیده [English]

In this research the possibility of vine pruning fibers in combination with wood fibers was studied in order to fabricate medium density fiberboard. Vine pruning fibers content in three levels of 0/100, 30/70 and 60/40 (weight percent) and press time in three levels of 4, 5 and 6 minutes were as variable factors. One layer panels with a density of 0.65 g/cm3 and thickness of 15 mm were made. The physical and mechanical properties of panels including modulus of rupture (MOR), thickness swelling (TS) as well as surface roughness (Ra, Rz, and Rq) were measured. Results showed that with increasing of vine pruning fibers up to 30%, surface roughness and TS of panels increased and then decreased when the vine pruning fibers increased up to 60% fibers. MOR was reduced with increasing of vine pruning fibers up to 60%. Increasing press time had no significant effect on surface roughness and the physical and mechanical properties of panels.

کلیدواژه‌ها [English]

  • Vine pruning fibers
  • medium density fiberboard (MDF)
  • Surface Roughness
  • press time

مراجع

 
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