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بررسی اثر مقدار الیاف چوب انگور و زمان پرس بر زاویه تماس و مقاومت اتصال سطح تخته فیبر دانسیته متوسط | ||
| تحقیقات علوم چوب و کاغذ ایران | ||
| مقاله 10، دوره 30، شماره 2 - شماره پیاپی 51، تیر 1394، صفحه 289-298 اصل مقاله (392.73 K) | ||
| نوع مقاله: مقاله پژوهشی | ||
| شناسه دیجیتال (DOI): 10.22092/ijwpr.2015.12919 | ||
| نویسندگان | ||
| فاطمه رضائی1؛ علی اکبر عنایتی* 2 | ||
| 1دانش آموخته‌ی کارشناسی ارشد، دانشکده منابع طبیعی، دانشگاه تهران، ایران، | ||
| 2استادT صنایع چوب و کاغذT دانشکده منابع طبیعی، دانشگاه تهران، ایران، | ||
| چکیده | ||
| در این تحقیق تاثیر استفاده از الیاف چوب انگور بصورت مخلوط با الیاف چوب‌های جنگلی در ساخت تخته‌فیبر دانسیته متوسط مورد بررسی قرار گرفت. تخته‌های آزمونی همسان با ضخامت 15 میلی‌متر و دانسیته 65/0 گرم بر سانتی‌مترمکعب ساخته شدند. عوامل متغیر شامل درصد اختلاط الیاف چوب انگور در سه سطح 0/100، 30/70 و 60/40 و زمان پرس 4، 5 و6 دقیقه بودند. دو ویژگی زاویه تماس (ترشوندگی) و مقاومت اتصال سطحی تخته‌ها بررسی شدند. نتایج نشان داد که با افزایش مقدار الیاف چوب انگور تا 60 درصد زاویه تماس کاهش اما این کاهش معنی‌دار نبوده است. با افزایش زمان پرس از 4 به 5 دقیقه زاویه تماس افزایش و ترشوندگی کاهش داشته است اما با افزایش زمان پرس از 5 به 6 دقیقه زاویه تماس کاهش و ترشوندگی افزایش یافت. مقاومت اتصال سطحی تخته‌ها با افزایش میزان الیاف چوب انگور تا 30 درصد کاهش و با افزایش از 30 به 60 درصد تخته‌ها قوی‌تر می‌شوند. | ||
| کلیدواژه‌ها | ||
| تخته‌فیبر دانسیته متوسط؛ الیاف چوب انگور؛ مقاومت اتصال سطحی؛ ترشوندگی؛ زاویه تماس | ||
| عنوان مقاله [English] | ||
| Investigation of gluability and wettability properties of Medium Density Fiberboard produced using vine pruning fibers in combination with wood fibers | ||
| نویسندگان [English] | ||
| Fatemh Rezaei1؛ Ali akbar Enayati2 | ||
| 1M.Sc. Graduate, Faculty of Natural Resources, University of Tehran, Karaj, I. R. Iran | ||
| 2Professor, Faculty of Natural Resources, University of Tehran, Karaj, I. R. Iran | ||
| چکیده [English] | ||
| In this research, the effect of vine pruning fibers in combination with wood fibers on contact angel (wettability) and surface bond strength of medium density fiberboard was studied. One layer laboratory panels with a thickness of 15 mm and density of 650 Kg/Cm3 were produced. Variable factors were vine pruning fibers content in three levels of 0/100, 30/70 and 60/40 by weight and press time in three levels of 4, 5 and 6 minutes. The wet ability and surface bond strength of panels were measured. Results showed that the contact angle of the boards was reduced when the vine pruning fibers content increased up to 60%. Press time had significant influence on wet ability of test panels. So that the contact angle was increased with increasing the press time up to 5 minutes. Whereas the contact angle was reduced when the press time of panels increased to 6 minutes. In addition, the results indicated that the sanding of panels caused a decrease of contact angle in the boards. Moreover the surface bond strength of panels were reduced with adding vine pruning fibers up to 30% whereas the panels produced using 60% vine pruning fibers showed stronger. | ||
| کلیدواژه‌ها [English] | ||
| MEDIUM DENSITY FIBERBOARD, Vine pruning fibers, Surface bond strength, wettability, Contact angle | ||
| مراجع | ||
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