fa بررسی امکان استفاده از پسماند پارچه در ساخت تخته فیبر دانسیته متوسط عمومى General پژوهشي Research <div style="text-align: justify;"><span style="font-size:14pt"><span style="direction:rtl"><span style="unicode-bidi:embed"><span style="line-height:115%"><span b="" nazanin="" style="font-family:"><b><span lang="FA" style="font-size:12.0pt"><span style="line-height:115%"><span b="" lotus="" style="font-family:"><span style="color:black">زمینه و هدف:</span></span></span></span></b><span lang="FA" style="font-size:12.0pt"><span style="line-height:115%"><span b="" lotus="" style="font-family:"><span style="color:black"> امروزه در کلان‌شهرها مدیریت اصولی و بهداشتی پسماندها بسیار مهم است</span></span></span></span><span dir="LTR" style="font-size:11.0pt"><span style="line-height:115%"><span new="" roman="" style="font-family:" times=""><span style="color:black">.</span></span></span></span><span style="font-size:12.0pt"><span style="line-height:115%"><span b="" lotus="" style="font-family:"><span style="color:black"> بازیافت یکی از مناسب‌ترین گزینه‌ها در مدیریت پسماند است. در این راستا، پژوهش حاضر با هدف بررسی امکان استفاده از پسماند پارچه در<b> </b>ساخت تخته ‌فیبر دانسیته متوسط (</span></span></span></span><span dir="LTR" lang="FR" style="font-size:11.0pt"><span style="line-height:115%"><span new="" roman="" style="font-family:" times=""><span style="color:black">MDF</span></span></span></span><span lang="FA" style="font-size:12.0pt"><span style="line-height:115%"><span b="" lotus="" style="font-family:"><span style="color:black">) </span></span></span></span><span lang="AR-SA" style="font-size:12.0pt"><span style="line-height:115%"><span b="" lotus="" style="font-family:"><span style="color:black">انجام شد</span></span></span></span><span lang="FA" style="font-size:12.0pt"><span style="line-height:115%"><span b="" lotus="" style="font-family:"><span style="color:black">ه است</span></span></span></span><span lang="AR-SA" style="font-size:12.0pt"><span style="line-height:115%"><span b="" lotus="" style="font-family:"><span style="color:black">. </span></span></span></span></span></span></span></span></span><br> <span style="font-size:14pt"><span style="direction:rtl"><span style="unicode-bidi:embed"><span style="line-height:115%"><span b="" nazanin="" style="font-family:"><b><span lang="AR-SA" style="font-size:12.0pt"><span style="line-height:115%"><span b="" lotus="" style="font-family:"><span style="color:black">روش بررسی:</span></span></span></span></b> <span lang="FA" style="font-size:12.0pt"><span style="line-height:115%"><span b="" lotus="" style="font-family:"><span style="color:black">این مطالعه، از نوع تجربی و در مقیاس آزمایشگاهی انجام شد. ضایعات پارچه به روش تفکیک در مبدأ از یک تولیدکننده‌ لباس در تهران تهیه و به الیاف تبدیل شد. تخته‌های آزمونی با </span></span></span></span><span lang="AR-SA" style="font-size:12.0pt"><span style="line-height:115%"><span b="" lotus="" style="font-family:"><span style="color:black">درصد وزنی اختلاط الیاف ضایعات پارچه به الیاف صنعتی به‌ترتیب در سه سطح 100:0، 90:10 و 85:15، چسب اوره‌فرمالدهید به مقدار 10 درصد، با ضخامت </span></span></span></span><span dir="LTR" style="font-size:11.0pt"><span style="line-height:115%"><span new="" roman="" style="font-family:" times=""><span style="color:black">mm</span></span></span></span> <span lang="AR-SA" style="font-size:12.0pt"><span style="line-height:115%"><span b="" lotus="" style="font-family:"><span style="color:black">16</span></span></span></span><span lang="FA" style="font-size:12.0pt"><span style="line-height:115%"><span b="" lotus="" style="font-family:"><span style="color:black"> و دانسیته </span></span></span></span><span dir="LTR" style="font-size:11.0pt"><span style="line-height:115%"><span new="" roman="" style="font-family:" times=""><span style="color:black">g/cm³</span></span></span></span><span lang="FA" style="font-size:12.0pt"><span style="line-height:115%"><span b="" lotus="" style="font-family:"><span style="color:black"> 0/7 با پرس گرم آزمایشگاهی ساخته شدند. سپس ویژگی‌های مکانیکی تخته‌ها شامل مقاومت خمشی، مدول الاستیسیته، چسبندگی داخلی، سختی و نیز ویژگی‌های فیزیکی شامل جذب آب و واکشیدگی ضخامت بعد از 2 و </span></span></span></span><span dir="LTR" style="font-size:11.0pt"><span style="line-height:115%"><span new="" roman="" style="font-family:" times=""><span style="color:black">h</span></span></span></span><span lang="FA" style="font-size:12.0pt"><span style="line-height:115%"><span b="" lotus="" style="font-family:"><span style="color:black"> 24 غوطه‌وری در آب اندازه‌گیری شدند. نتایج با آزمون </span></span></span></span><span dir="LTR" style="font-size:11.0pt"><span style="line-height:115%"><span new="" roman="" style="font-family:" times=""><span style="color:black">ANOVA</span></span></span></span><span lang="FA" style="font-size:12.0pt"><span style="line-height:115%"><span b="" lotus="" style="font-family:"><span style="color:black"> تحلیل شد.</span></span></span></span></span></span></span></span></span><br> <span style="font-size:14pt"><span style="direction:rtl"><span style="unicode-bidi:embed"><span style="line-height:115%"><span b="" nazanin="" style="font-family:"><b><span lang="FA" style="font-size:12.0pt"><span style="line-height:115%"><span b="" lotus="" style="font-family:"><span style="color:black">یافته‌ها:</span></span></span></span></b><span lang="FA" style="font-size:12.0pt"><span style="line-height:115%"><span b="" lotus="" style="font-family:"><span style="color:black"> نتایج تجزیه واریانس نشان داد اثر الیاف ضایعات پارچه بر مقاومت خمشی، مدول الاستیسیته و واکشیدگی ضخامت 2 و </span></span></span></span><span dir="LTR" style="font-size:11.0pt"><span style="line-height:115%"><span new="" roman="" style="font-family:" times=""><span style="color:black">h</span></span></span></span><span lang="FA" style="font-size:12.0pt"><span style="line-height:115%"><span b="" lotus="" style="font-family:"><span style="color:black"> 24 تخته‌های ساخته ‌شده در سطح احتمال 5 درصد معنی‌دار است. همچنین، </span></span></span></span><span lang="FA" style="font-size:12.0pt"><span style="line-height:115%"><span b="" lotus="" style="font-family:"><span style="color:black">نتایج نشان داد بیشترین مقادیر خواص فیزیکی و مکانیکی به‌دست ‌آمده مربوط به تخته‌های ساخته ‌شده با 10 درصد الیاف ضایعات پارچه است. </span></span></span></span></span></span></span></span></span><br> <span style="font-size:14pt"><span style="direction:rtl"><span style="unicode-bidi:embed"><span style="line-height:115%"><span b="" nazanin="" style="font-family:"><b><span lang="FA" style="font-size:12.0pt"><span style="line-height:115%"><span b="" lotus="" style="font-family:"><span style="color:black">نتیجه‌گیری:</span></span></span></span></b><span lang="FA" style="font-size:12.0pt"><span style="line-height:115%"><span b="" lotus="" style="font-family:"><span style="color:black"> نتایج این تحقیق نشان داد که ساخت </span></span></span></span><span dir="LTR" style="font-size:11.0pt"><span style="line-height:115%"><span new="" roman="" style="font-family:" times=""><span style="color:black">MDF</span></span></span></span><span lang="FA" style="font-size:12.0pt"><span style="line-height:115%"><span b="" lotus="" style="font-family:"><span style="color:black"> با الیاف ضایعات پارچه امکان‌پذیر </span></span></span></span><span lang="FA" style="font-size:12.0pt"><span style="line-height:115%"><span b="" lotus="" style="font-family:"><span style="color:black">است. استفاده از پسماندها مانند پارچه در تولید محصول کاربردی جدید می‌تواند یکی از راهکارهای کاهش پسماندها و در نتیجه حفظ بیشتر سلامت انسان‌ها و محیط زیست باشد.</span></span></span></span></span></span></span></span></span><br> &nbsp;</div> <div style="text-align: justify;"><span style="font-size:14pt"><span style="line-height:115%"><span b="" nazanin="" style="font-family:"><b><span style="font-size:11.0pt"><span style="line-height:115%"><span new="" roman="" style="font-family:" times=""><span style="color:black">Background and Objective:</span></span></span></span></b><span style="font-size:11.0pt"><span style="line-height:115%"><span new="" roman="" style="font-family:" times=""><span style="color:black"> Nowadays, in metropolitan areas, principled and hygienic waste management is very important. Recycling is one of the most appropriate options in waste management. Hereof, the present study was aimed to investigate the possibility of using textile waste fibers in the manufacture of Medium Density Fiberboard (MDF).</span></span></span></span></span></span></span><br> <span style="font-size:14pt"><span style="line-height:115%"><span b="" nazanin="" style="font-family:"><b><span style="font-size:11.0pt"><span style="line-height:115%"><span new="" roman="" style="font-family:" times=""><span style="color:black">Materials and Methods:</span></span></span></span></b><span style="font-size:11.0pt"><span style="line-height:115%"><span new="" roman="" style="font-family:" times=""><span style="color:black"> This experimental study was performed on lab-scale.</span></span></span></span> <span style="font-size:11.0pt"><span style="line-height:115%"><span new="" roman="" style="font-family:" times=""><span style="color:black">Fabric waste was prepared by separation method at source from a clothing manufacturer in Tehran and converted into fibers. Test boards were made with weight percentage of mixing textile waste fibers to industrial fibers at three levels of 0:100, 10:90 and 15:85, respectively, 10% urea-formaldehyde adhesive, with 16 mm thickness and 0.7 g/cm³ density by hot press. Then, properties of the boards were measured including bending strength, modulus of elasticity, internal bond, hardness, water absorption and thickness swelling.</span></span></span></span> <span style="font-size:11.0pt"><span style="line-height:115%"><span new="" roman="" style="font-family:" times=""><span style="color:black">The results were analyzed with ANOVA test.</span></span></span></span></span></span></span><br> <span style="font-size:14pt"><span style="line-height:115%"><span b="" nazanin="" style="font-family:"><b><span style="font-size:11.0pt"><span style="line-height:115%"><span new="" roman="" style="font-family:" times=""><span style="color:black">Results:</span></span></span></span></b><span style="font-size:11.0pt"><span style="line-height:115%"><span new="" roman="" style="font-family:" times=""><span style="color:black"> The results of ANOVA showed that the effect of textile waste fibers on the bending strength, modulus of elasticity and swelling thickness of 2 and 24 hours of boards made at 5% probability level was significant. Additionally, the highest values of physical and mechanical properties are related to made boards with 10% of textile waste fibers.</span></span></span></span><span dir="RTL" lang="AR-SA" style="font-size:12.0pt"><span style="line-height:115%"><span b="" lotus="" style="font-family:"><span style="color:black"></span></span></span></span></span></span></span><br> <span style="font-size:14pt"><span style="line-height:115%"><span b="" nazanin="" style="font-family:"><b><span style="font-size:11.0pt"><span style="line-height:115%"><span new="" roman="" style="font-family:" times=""><span style="color:black">Conclusion:</span></span></span></span></b><span style="font-size:11.0pt"><span style="line-height:115%"><span new="" roman="" style="font-family:" times=""><span style="color:black"> The results showed that it is possible to make MDF with textile waste fibers. The use of wastes such as fabrics in the production of new functional products can be considered as one of the strategies to reduce waste and thus to maintain human health and the environment.</span></span></span></span><span dir="RTL" lang="AR-SA" style="font-size:12.0pt"><span style="line-height:115%"><span b="" lotus="" style="font-family:"><span style="color:black"></span></span></span></span></span></span></span><br> &nbsp;</div> پسماند جامد شهری, محیط زیست, تخته ‌فیبر دانسیته متوسط, پسماند پارچه Municipal solid waste, Environment, Medium density fiberboard, Textile waste 695 708 http://ijhe.tums.ac.ir/browse.php?a_code=A-10-2530-1&slc_lang=fa&sid=1 Pantea Omrani پانته‌آ عمرانی pantea.omrani@gmail.com Yes Wood Science and Technology Department, Faculty of Materials Engineering & Interdisciplinary Sciences, Shahid Rajaee Teacher Training University, Tehran, Iran گروه صنایع چوب، دانشکده مهندسی مواد و علوم میان رشته‌ای، دانشگاه تربیت دبیر شهید رجایی، تهران، ایران