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ارزیابی پانل ساندویچی ساخته شده از ضایعات برگ نخل خرما و تخته سه لایه | ||
| تحقیقات علوم چوب و کاغذ ایران | ||
| مقاله 5، دوره 38، شماره 1 - شماره پیاپی 82، فروردین 1402، صفحه 48-58 اصل مقاله (760.74 K) | ||
| نوع مقاله: مقاله پژوهشی | ||
| شناسه دیجیتال (DOI): 10.22092/ijwpr.2022.358156.1715 | ||
| نویسندگان | ||
| علی اکبر یزدی میمند1؛ علی خاکی2؛ محمد غفرانی* 3 | ||
| 1دانشآموخته کارشناسی ارشد کامپوزیتهای لیگنوسلولزی، دانشگاه تربیت دبیر شهید رجایی، تهران، ایران | ||
| 2استادیار، عضو هیئتعلمی دانشگاه فنی و حرفهای، تهران، ایران | ||
| 3استاد، گروه کامپوزیتهای لیگنوسلولزی، دانشگاه تربیت دبیر شهید رجایی، تهران، ایران. | ||
| چکیده | ||
| پانلهای ساندویچی یکی از انواع سازههای کامپوزیتی هستند که در مقیاس وسیعی مصرف دارند. این تحقیق با هدف بررسی تاثیر سه نوع چسب اوره فرمالدهید (UF)، ملامین فرمالدهید (MF) و ترکیب اوره فرمالدهید + ملامین فرمالدهید (UF+MF) و دو دانسیته لایه مغزی (400 و 500 کیلوگرم بر مترمکعب) بر روی خواص فیزیکی و مکانیکی پانلهای ساندویچی ساخته شده از برگ نخل انجام شده است. دما، فشار و زمان پرس برای تمامی پانلهای ساخته شده به ترتیب 175 درجه سانتی گراد، 35 کیلوگرم بر سانتیمتر مربع و 9 دقیقه بود. ضخامت نهایی تمامی پانلها یکسان و برابر 25 میلیمتر بود. بررسی ویژگیهای فیزیکی و مکانیکی شامل؛ جذب آب، واکشیدگی ضخامت، مقاومت خمشی، مدول الاستیسیته خمشی، مقاومت به ضربه و چسبندگی داخلی روی نمونهها انجام گردید. نتایج نشان داد که بین مقادیر تیمارهای مختلف اختلاف معنیدار وجود دارد. خواص فیزیکی (بجز واکشیدگی ضخامت) و خواص مکانیکی در دانسیته 500 کیلوگرم بر مترمکعب، بهبود یافت. استفاده از چسب MF و UF+MF به طور قابل ملاحظهای خواص فیزیکی و مکانیکی پانلهای ساندویجی را بهبود بخشید. | ||
| کلیدواژهها | ||
| اوره فرمالدهید؛ برگ نخل؛ پانلهای ساندویچی؛ خواص مکانیکی؛ ملامین فرمالدهید | ||
| عنوان مقاله [English] | ||
| Evaluation of sandwich panels from palm leaves waste and plywood | ||
| نویسندگان [English] | ||
| Aliakbar Yazdi meymand1؛ Ali Khaki2؛ mohammad ghofrani3 | ||
| 1M.Sc. Graduated in lignocellulosic composites, Shahid Rajaee Teacher Training University (SRTTU), Tehran, Iran | ||
| 2Assistant Professor, Technical and Vocational University Tehran, Iran | ||
| 3Professor, Department of lignocellulosic composites, Shahid Rajaee Teacher Training University (SRTTU), Tehran, Iran. | ||
| چکیده [English] | ||
| Sandwich panels are one of the most advanced forms of composite structures that are widely used. The objective of this study was to investigate the effect of three types of resin: urea formaldehyde (UF), melamine formaldehyde (MF) and the combination of urea formaldehyde + melamine formaldehyde (UF + MF) two core layer densities (400 and 500 kg/m3) on physical and mechanical properties of sandwich panels made of palm leaves waste. Pressure temperature, pressure and time for all panels were 175 °C, 35 kg /cm2 and 9 minutes, respectively. The final thickness of all panels was the same and equal to 25 mm. Physical and mechanical properties include; Water absorption (WA), thickness swelling (TS), modulus of rupture (MOR), modulus of elasticity (MOE), impact bending strength (IBS) and internal bonding (IB) were performed on the samples. The results showed that there was a significant (p<0.05) difference between the values of different treatments at the level of 95%. Physical properties (except thickness swelling) and mechanical properties with a density of 500 kg/m3 improved. The use of MF and UF + MF resins significantly improved the physical and mechanical properties of sandwich panels due to its high adhesive quality. | ||
| کلیدواژهها [English] | ||
| Urea formaldehyde, palm leaves, sandwich panels, mechanical properties, melamine formaldehyde | ||
| مراجع | ||
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-Abdolzadeh, H., Doosthoseini, K., Karimi, A.N. and Enayati, A.A., 2011. The effect of acetylated particle distribution and type of resin on physical and mechanical properties of poplar particleboard. European Journal of Wood and Wood Products, 69(1): 3-10.
-Biswas, D., Bose, S.K. and Hossain, M.M., 2011. Physical and mechanical properties of urea formaldehyde-bonded particleboard made from bamboo waste. International Journal of Adhesion and Adhesives, 31(2): 84-87.
-Bollmus, S., Beeretz, C. and Militz, H., 2020. Tensile and impact bending properties of chemically modified Scots pine. Forests, 11(1): 84.
-Bos, H. L., Molenveld, K., Teunissen, W., Van Wingerde, A.M. and Van Delft, D.R.V., 2004. Compressive behaviour of unidirectional flax fibre reinforced composites. Journal of materials science, 39(6): 2159-2168.
-DIN 52189 (1981). Testing of wood; determination of impact bending strength (Schlagbiegeversuch; Bestimmung der Bruchschlagarbeit).
-DIN (European Standard), EN 310, 1993. Wood- Based Panels. Determination of Modulus of elasticity in Bending and of bending strength, CEN European Committee for Standardization.
-DIN (European Standard), EN 319, 1993. Particle boards and fiber boards. Determination of Tensile Strength Perpendicular to plane of the board, CEN European Committee for Standardization.
-Epmeier, H., Westin, M. and Rapp, A., 2004. Differently modified wood: Comparison of some selected properties. Scandinavian Journal of Forest Research, 19: 31-37.
-Esposito Corcione, C., Ferrari, F., Striani, R., Dubrulle, L., Visconti, P., Zammarano, M. and Greco, A., 2021. Optimizing Flame Retardancy and Durability of Melamine-Formaldehyde/Solid-Urban-Waste Composite Panels. Polymers, 13(5): 712.
-Fathy, L., Faezipour, M. and Bahmani, M., 2010. Effect of UF and MUF resins on the practical properties of particleboard produced from rice straw and aspen particles. Iranian Journal of Wood and Paper Science Research, 25(2): 321-331. (In Persian)
-Ghofrani, M., Pishan, S. and Talaei, A., 2014. The effect of core type and skin on the mechanical properties of lightweight sandwich Panels. Iranian Journal of Wood and Paper Science Research, 28(4): 720-731. (In Persian)
-Griškevičius, P., Zeleniakienė, D., Leišis, V. and Ostrowski, M., 2010. Experimental and numerical study of impact energy absorption of safety important honeycomb core sandwich structures. Materials Science (Medžiagotyra), 16(2): 119-123.
-Guo, X., Cao, J., Peng, Y. and Liu, R., 2016. Incorporation of microencapsulated dodecanol into wood flour/high-density polyethylene composite as a phase change material for thermal energy storage. Materials and Design, 89: 1325-1334.
-Jabbari, M., Tatari, A. and Ghaffari, M., 2014. Effect of faces type and thickness on mechanical properties of sandwich panels. Iranian Journal of Wood and Paper Industries, 5(1): 85-92. (In Persian)
-Jeong, B. and Park, B.D., 2016. Measurement of molecular weights of melamine-urea-formaldehyde resins and their influences to properties of medium density fiberboards. Journal of the Korean Wood Science and Technology, 44(6): 913-922.
-Kim, S., Kim, H. J., Kim, H.S. and Lee, H. H., 2006. Effect of Bio‐Scavengers on the Curing Behavior and Bonding Properties of Melamine‐Formaldehyde Resins. Macromolecular Materials and Engineering, 291(9): 1027-1034.
-Kim, S. and Kim, H.J., 2006. Study of miscibility of melamine-formaldehyde resin and poly (vinyl acetate) blends for use as adhesives in engineered flooring. Journal of adhesion science and technology, 20(2-3): 209-219.
-Kiselyov, A., Mayorova, M., Shishkina, N. and Markin, M., 2021. Solving the problems of conservation and rational use of natural resources as a modern factor in the development of the world and regional economy. In E3S Web of Conferences (Vol. 291, p. 02015). EDP Sciences.
-Hindman, D.P., Timko, P.D. and Nussbaum, M.A., 2013. Mechanical response of unbraced wood composite I-joist to walking loads. Journal of construction engineering and management, 139(11): 04013023.
-International Standard ISO 16983: Wood-based panels - Determination of swelling in thickness after immersion in water, 2003.
-Lv, W., Li, D. and Dong, L., 2021. Study on blast resistance of a composite sandwich panel with isotropic foam core with negative Poisson's ratio. International Journal of Mechanical Sciences, 191: 106105.
-Mahdavi, S., Kermanian, H. and Varshoei, A., 2010. Comparison of mechanical properties of date palm fiber-polyethylene composite. BioResources, 5(4): 2391-2403.
-Mohebby, B., Gorbani-Kokandeh, M. and Soltani, M., 2009. Springback in acetylated wood based composites. Construction and Building Materials, 23(9): 3103-3106.
-San Ha, N., Lu, G. and Xiang, X., 2019. Energy absorption of a bio-inspired honeycomb sandwich panel. Journal of materials science, 54(8), 6286-6300.
-Ross, R. J., 2010. Wood handbook: wood as an engineering material. USDA Forest Service, Forest Products Laboratory, General Technical Report FPL-GTR-190, 2010: 509 p. 1 v., 190.
-Saffari, M., Jabbari, M., Najafi, A., Tatari, A. and Ghaffari, M., 2013. The effect of face and adhesive types on mechanical properties of sandwich panels made from honeycomb paper. Iranian Journal of Wood and Paper Industries, 4(2): 157-169. (In Persian)
-Shamsian, M. and Mansouri, H., 2016. Mechanical properties of a light weight wood base sandwich panel made from sunflower stalks and poplar layer scrap. Journal of Forest and Wood Products, 69(1): 199-214. (In Persian)
-Wang, D., 2009. Impact behavior and energy absorption of paper honeycomb sandwich panels. International Journal of Impact Engineering, 36(1): 110-114.
-Xian, D., Semple, K.E., Haghdan, S. and Smith, G. D., 2013. Properties and wood bonding capacity of nanoclay-modified urea and melamine formaldehyde resins. Wood and Fiber science, 45(4), 383-395. | ||
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