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اثر تیمار لایه مغزی و مقدار پرکننده پودر بادام در خط چسب بر روی مقاومت چسبندگی کششی پانل ساندویچ | ||
| تحقیقات علوم چوب و کاغذ ایران | ||
| مقاله 13، دوره 31، شماره 1 - شماره پیاپی 54، فروردین 1395، صفحه 141-153 اصل مقاله (943.92 K) | ||
| نوع مقاله: مقاله پژوهشی | ||
| شناسه دیجیتال (DOI): 10.22092/ijwpr.2015.105605 | ||
| نویسندگان | ||
| مرتضی ناظریان* 1؛ وحید معظمی2؛ رحیم محبی گرگری3 | ||
| 1دانشیار گروه علوم و صنایع چوب و کاغذ، دانشگاه زابل، | ||
| 2دانشجوی کارشناسی ارشد گروه علوم و صنایع چوب و کاغذ، دانشگاه زابل | ||
| 3مربی گروه علوم و صنایع چوب و کاغذ، دانشگاه زابل | ||
| چکیده | ||
| هدف از این پژوهش بررسی اثر تیمار خرده‌های نی(Arundo donax) بکار رفته در لایه میانی پانل ساندویچی (بدون تیمار، با تیمار حرارتی خشک و آب جوش) و نیز نسبت وزنی پودر پوسته میوه بادام به رزین ملامین اوره فرم‌آلدئید در سه سطح (3:97، 18:82 و 33:67) بر روی مقاومت چسبندگی کششی خشک و تر (بعد از 2 ساعت غوطه‌وری در آب جوش) پانل ساندویچی بوده است. تحلیل آماری نتایج و گروه‌بندی دانکن نشان داد که نوع تیمار خرده‌های لایه میانی و نسبت پودر پوسته میوه بادام تأثیر معنی‌داری بر روی مقاومت چسبندگی کششی خشک و تر داشته است. نتایج حاصل از طیف‌های FT_IR به‌دست آمده از نمونه-های پانل‌های ساخته شده با خرده‌های تحت تیمار آب جوش نیز نشان داد که تیمار آب جوش باعث افزایش تعداد پیوندهای شیمیایی می‌شود. همچنین تصاویر ماکروسکوپی نشان داده است که تیمار آب جوش بهترین سطح، جهت اتصال مطلوب را می تواند ایجاد کند. به‌طور کلی پانل‌های حاوی خرده‌های تیمارشده با آب جوش در لایه مغزی و 33 درصد پرکننده پودر پوسته میوه بادام در خط چسب بیش‌ترین مقاومت چسبندگی کششی در حالت خشک (MPa 01/5) و تر (MPa 86/2) را داشته‌اند. | ||
| کلیدواژه‌ها | ||
| پانل ساندویچ؛ پوسته میوه بادام؛ طیف مادون قرمز؛ پودر؛ مقاومت چسبندگی کششی | ||
| عنوان مقاله [English] | ||
| The effect of core layer treatment and almond shell powder content in the glue line on the pull off adhesion sandwich panel | ||
| نویسندگان [English] | ||
| Morteza Nazeryan1؛ Vahid Moazemi2؛ Rahim Mohebi gargari3 | ||
| 1Associate Professor, department of Wood and Paper Science and Technology, University of Zabol, Iran | ||
| 2M.Sc., Department of Wood and Paper Science and Technology, University of Zabol, Iran | ||
| 3Trainer, Department of Wood and Paper Science and Technology, University of Zabol, Iran | ||
| چکیده [English] | ||
| The aim of this study was the evaluation of treatment effect of giant reed (Arundo donax) (untreated, heat-treated and hot-water-leached treatment) used in core layer of sandwich panel, and also the effect of weight ratio of almond shell powder to melamine/urea formaldehyde at three levels (3:97, 18:82 and 33:67 w/w) on the dry- and wet-pull off adhesion (after 2 hours immersion in boiling water) of sandwich panel. Statistical analysis and Duncan multiple range test showed that the type of treatment of core layer particle and the ratio of almond shell powder to melamine/urea formaldehyde statistically influenced the dry and wet-pull off adhesion. According to the FTIR spectra obtained from samples made from particle treated with hot-water, the hot-water treatment caused an increase in number of hydrogen bonds. Macroscopic photos, also, showed that hot-water treatment created the best surface quality in order to forming desirable bond. Generally, panel manufactured from hot-water-treated particles in core layer and 33% of almond shell powder in glue line had the highest pull off adhesion in dry (5.01MPa) and wet (2.86 MPa) conditions. | ||
| کلیدواژه‌ها [English] | ||
| sandwich panel, almond shell powder, FTIR, pull off adhesion | ||
| مراجع | ||
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