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فصلنامه علمی کارافن

بررسی استفاده از سرشاخه‌های انگور و سنجد به‌عنوان جایگزین پایدار در تولید تخته خرده چوب: ارزیابی ویژگی‌های فیزیکی و مکانیکی

نوع مقاله : مقاله پژوهشی (کاربردی)

نویسندگان
1 گروه علوم و صنایع چوب و کاغذ، دانشکده منابع طبیعی، دانشگاه تهران، کرج، ایران.
2 کارشناس بخش حفاظت اداره آب منطقه ای قزوین، دانشگاه پیام نور قزوین، قزوین، ایران.
3 گروه صنایع چوب و کاغذ، دانشکده کشاورزی و منابع طبیعی، دانشگاه آزاد اسلامی واحد کرج، کرج ،ایران.
چکیده
به منظور بررسی تاثیر ویژگی های سرشاخه های هرس شده درخت انگورو سنجد در کیفیت تخته خرده چوب در این تحقیق تخته هایی با سرشاخه های انگور با نسبت 0، 15، 30 و 50 درصد با سرشاخه های سنجد تولید گردید.در این تحقیق در ساخت تخته ها از رزین اوره فرمالدهید تحت شرایط محیط قلیایی ، اسیدی ، قلیایی با نسبت مولکولی اولیه فرمالدهید به اوره 9/1 به 1 و نسبت مولکولی پایانی 3/1 به 1 و ضریب مصرف رزین درتخته با میزان 11،9 و 13 درصد و زمان پرس 5 و 7 دقیقه استفاده گردید. میزان مصرف خرده چوب ها ، مصرف رزین و زمان پرس عوامل متغیر این تحقیق و سایر عوامل به عنوان شرایط ثابت در نظر گرفته شد. نتایج این مطالعه نشان داد که افزایش سرشاخه انگور به سرشاخه سنجد تا 15 درصد موجب افزایش مقاومت خمشی، مدول الاستیسیته و چسبندگی داخلی در مقایسه با تخته های ساخته شده از سرشاخه سنجد می گردد. در این تحقیق شرایط بهینه برای تولید تخته، استفاده از 15 درصد سرشاخه انگور، 11 درصد چسب اوره فرمالدئید و زمان پرس 7 دقیقه می باشد.
کلیدواژه‌ها
موضوعات

عنوان مقاله English

Investigating the use of grape and elder branches as a sustainable alternative in the production of particle board: evaluation of physical and mechanical properties

نویسندگان English

SAEED KAMRANI 1
MOZHDEH KAKAVAND 2
PAIMAN AHMADI 1
shadman pourmousa 3
1 Department of Wood and Paper Science and Technology, Faculty of Natural Resources, University of Tehran, Karaj, Iran.
2 Payam Noor University of Qazvin - Expert in the Conservation Department of Qazvin Regional Water Administration, Qazvin, Iran
3 Department of Wood and Paper Science and Technology, Faculty of Agriculture and Natural Resources, Islamic Azad University, Karaj Branch, Karaj, Iran.
چکیده English

In order to investigate the effect of the characteristics of grape branches and elder branches on the quality of particleboard, in this study, boards with grape branches at a ratio of 0, 15, 30 and 50% with elder branches were produced. In this study, urea formaldehyde resin was used in the manufacture of boards under alkaline, acidic and alkaline environmental conditions with an initial molecular ratio of formaldehyde to urea of 1.9 to 1 and a final molecular ratio of 1.3 to 1 and a resin consumption coefficient per board of 11, 9 and 13% and a pressing time of 5 and 7 minutes. The amount of wood chips consumed, resin consumption and pressing time were considered as variable factors in this study and other factors were considered as fixed conditions. The results of this study showed that increasing the grape branch to elder branch ratio by up to 15% increased the bending strength, elastic modulus and internal adhesion compared to boards made from elder branches. In this research, the optimal conditions for producing boards are the use of 15% grape branches, 11% urea formaldehyde glue, and a pressing time of 7 minutes.

کلیدواژه‌ها English

Grape branches
Elder branches
Particleboard
Physical and mechanical properties
Urea formaldehyde resin
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دوره 22، شماره 4
کشاورزی / هنر و معماری
زمستان 1404
صفحه 531-553

  • تاریخ دریافت 08 اسفند 1403
  • تاریخ بازنگری 07 مهر 1404
  • تاریخ پذیرش 21 مهر 1404