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اثر افزودن چند ماده گرافیتپایه به چسب اوره فرمآلدهید در خواص حرارتی و مکانیکی تخته فیبر نیمهسنگین (MDF) | ||
| تحقیقات علوم چوب و کاغذ ایران | ||
| مقاله 3، دوره 38، شماره 2 - شماره پیاپی 83، تیر 1402، صفحه 100-113 اصل مقاله (806.78 K) | ||
| نوع مقاله: مقاله پژوهشی | ||
| شناسه دیجیتال (DOI): 10.22092/ijwpr.2023.354899.1687 | ||
| نویسندگان | ||
| رضا جزایری1؛ سعید کاظمی نجفی* 2؛ حبیب الله یونسی3 | ||
| 1دانشآموخته دکتری علوم و مهندسی چوب و صنایع سلولزی، دانشکده منابع طبیعی و علوم دریایی، دانشگاه تربیت مدرس، نور، ایران | ||
| 2استاد، علوم و مهندسی چوب و صنایع سلولزی ، دانشکده منابع طبیعی و علوم دریایی، دانشگاه تربیت مدرس، نور، ایران | ||
| 3استاد، گروه محیط زیست، دانشکده منابع طبیعی و علوم دریایی، دانشگاه تربیت مدرس، نور، ایران | ||
| چکیده | ||
| در این پژوهش هدف استفاده از گرافیت و گرافیت اصلاحشده به عنوان افزودنی چندمنظوره در رزین اوره فرمآلدهید جهت ارتقاء خواص تخته فیبر نیمهسنگین (MDF) بود. بدینمنظور گرافیت انبساطیافته (EG) از گرافیت (G) به روش Tsai و همکاران (2011) تولید شد. سپس بوسیله فرآیند بینلایهای با منگنز دیاکسید با روش Schwarz و همکاران (1995) اصلاح و به MnO2-EG تبدیل گردید. هر ماده افزودنی در سه مقدار مصرف 1، 2 و 3 درصد به رزین اوره فرمآلدهید افزوده و تخته فیبر نیمهسنگین(MDF) با دانسیته اسمیkg/m3 750 ساخته شد. برای هر تیمار 3 تکرار در نظر گرفته شد بنابراین به همراه شاهد مجموعأ 27 تخته ساخته شد. در طول زمان پرس، زمان رسیدن به دمای OC100 (پارامتر(tT100oc لایه میانی تخته تحت تأثیر ماده افزودنی بوسیله ترمومتر بر پایه تروموکوپل کروم-نیکل تعیین شد. تیمار MnO2-EG3 (مقدار 3 درصد گرافیت انبساطیافته اصلاحشده) بیشترین تاثیر را در کاهش زمان رسیدن لایه میانی تخته به دمای OC100 به میزان 22 درصد نشان داد. بهعلاوه افزایش مدول الاستیسته به میزان 68 درصد در نتیجه این تیمار حاصل شد. افزودنیهای G و EG میزان بالاتری از چسبندگی داخلی را نسبت به افزودنی MnO2-EG نشان دادند. در این خصوص تیمارهای EG2 و EG3 42 و تیمار G2 40 درصد افزایش در چسبندگی داخلی را نشان دادند. تاثیر تیمار EG2 در بهبود واکشیدگی ضخامت 24 ساعت بیشتر از سایر تیمارها بود بهطوری که باعث حدود 19 درصد کاهش در مقایسه با شاهد شد. | ||
| کلیدواژهها | ||
| تخته فیبر نیمه سنگین(MDF)؛ رزین اوره فرم آلدهید؛ گرافیت؛ گرافیت انبساطیافته؛ tT100oc؛ خواص مکانیکی | ||
| عنوان مقاله [English] | ||
| Effect of Adding Several Graphite-Based Materials to Urea Formaldehyde Adhesive on Thermal and Mechanical Properties of MDF board | ||
| نویسندگان [English] | ||
| Reza Jazayeri1؛ Saeed Kazemi Najafi2؛ Habibollah Younesi3 | ||
| 1Wood science and technology department, Tarbiat modares university, Noor, Iran | ||
| 2Prof., Department of Wood and Paper Sciences, Faculty of Natural Resources, Tarbiat Modares University, Noor, Iran | ||
| 3Prof., Department of Environment Sciences, Faculty of Natural Resources, Tarbiat Modares University, Noor | ||
| چکیده [English] | ||
| This study aimet at to use modified graphite materials as a multifunction additive in the UF resin for improving the properties of medium density fiberboard (MDF). For this purpose expanded graphite EG was synthesized from graphite using the Tsai et al (2011) method. Then, as-synthesized EG was intercalated with manganese dioxide by Schwarz et al (1995) method and converted to MnO2-EG. Any additive was added to the urea formaldehyde resin in three doses of 1, 2 and 3% to make the relevant MDF panels with 750 kg/m3 nominal density. During the pressing time, the tT100oc parameter (time to reach temperature100○C) of the middle layer of the board under the influence of the additive was determined by a chromium-nickel-based thermocouple. The treatment of MnO2-EG3 (amount of 3% modified expanded graphite) showed the greatest effect in reducing tT100°C of the middle layer of the board by 22%. In addition, the elastic modulus increased by 68% as a result of this treatment. In addition, the elastic modulus increased by 68% as a result of this treatment. G and EG additives showed a higher degree of internal adhesion than that of MnO2-EG additive. In this regard, EG2 and EG3 treatments showed a 42% increase in internal adhesion and G2 treatment showed a 40% increase in internal adhesion. The effect of EG2 treatment in improving SW24 was greater than other treatments, so that it caused a 19% decrease compared to the control. | ||
| کلیدواژهها [English] | ||
| Medium density fiberboard (MDF), Urea formaldehyde resin, Graphite, Expanded graphite, tT100oc parameter, Mechanical properties | ||
| مراجع | ||
|
-Ama, O. M., Khoele, K., Wilson Anku, W., Ray, S.S., Ogbemudia, P.O. and Delport, D.J., 2020. Synthesis and Application of MnO2/Exfoliated Graphite Electrodes for Enhanced Photoelectrochemical Degradation of Methylene Blue and Congo Red Dyes in Water, Electrocatalysis, 11: 413–421.
-Chun, K., Kim, J. and Rie, D., 2020. Thermal Characteristics of Expandable Graphite–Wood Particle Composites, Materials 13(12):2732, DOI: 10.3390/ma13122732.
-Darmawan, S., Sofyan, K., Pari, G. and Sugiyanto, K., 2010. Effect of activated charcoal addition on formaldehyde emission of medium density fiberboard. Journal of Forestry Research, 2: 100-111.
-Dosthosseini, K., 2007. Wood Comosite Materials. Tehran University Publication (2487), Iran, 708p.
-EN 310 Standard. 1993. Wood Based Panel. Department of Modulus of Elasticity in Bending and Bending Strength, European Committee for Standardization, Brussels, Belgium.
-EN 319. 1993. Determination of Tensile Strength Perpendicular to the Plane of the Board, European Committee for Standardization, Brussels, Belgium.
-Galindo, B., Alcolea, S.G., Gómez, J., Navas, A., Murguialday, A.O., Fernandez, M.P. and Puelles, R.C., 2014. Effect of the number of layers of graphene on the electrical properties of TPU polymers, 2nd International Conference on Structural Nano Composites (NANOSTRUC 2014), IOP Conf. Series: Materials Science and Engineering, 64(1): 012008, doi:10.1088/1757-899X/64/1/012008.
-Hossseinzadegan, A., 2016. Study on graphene-based structures using micro Raman spectroscopy, Fotonic Master's Thesis, Shahid Beheshti University, Laser and Plasma Research Institute.
-Iranian Employers Association of Forest Products, 2018. Information excerpts from the global and national market for wood composites, http://www.iranwoodind.com/main_fa.asp?status=st atistics.
-Jazayeri R., Kazemi Najafi S., Younesi H . and Karegarfard., A. 2020. Influence of modified graphite on formaldehyde emission from medium density fiberboard (MDF), Iranian Journal of Wood and Paper Science Research, Vol. 35 No. (4): 348-361
-Krassowski, D.W.; Hutchings, D.A. and Qureshi, S.P. 2012. Expandable Graphite Flake as an Additive for a New Flame Retardant Resin; GrafTech International Holdings Inc Brooklyn Heights, OH, USA, pp. 1–6
-Kumar, A., Gupta, A., Sharma, K.V., Nasir, M. and Ahmad Khan, T., 2013. Influence of activated charcoalas filler on the properties of wood composites, International Journal of Adhesion and Adhesives, 46: 34-39.
Kumar, A., Gupta, A. and Sharma, K.V., 2014. Thermal and mechanical properties of urea-formaldehyde (UF) resin combined with multiwalled carbon nanotubes (MWCNT) as nanofiller and fiberboards prepared by UF-MWCNT. Holzforschung, 69(2): 199-205.
-Lin, H., Chen, D., Liu, H., Zou, X. and Chen, T., 2017. Effect of MnO2 Crystalline Structure on the Catalytic Oxidation of Formaldehyde. Aerosol Air Qual Res, 17: 1011-1020, https://doi.org/10.4209/aaqr.2017.01.0013
-Mahanta, N.K. and Abramson, A.R., 2012. Thermal Conductivity of Graphene and Graphene Oxide Nanoplatelets, l3th IEEE ITHERM Conference, May 30 - Jun 1, 2012, San Diego, USA, pp: 1-6.
-Malakani, A., Doosthoseini, K., Faezipour, M. and Layeghi, M., 2014. Effect of Graphite powder on thermal conductivity, physical and mechanical properties of 3-layer particleboard, Iranian Journal of Wood and Paper Industries, 4(2): 123-130.
-Matuana, L.M., 2003. Properties of particleboard panels made with liquid PF resin (control) and PF resin/synthetic graphite, Forest Products Journal, 53 (3).
-Motiee, N., Ebrahimi, G., Tajvidi, M. and Layeghi, M. 2014. Minimizing hot-press time in the manufacturing process of wood plastic composites, Iranian Journal of Wood and Paper Industries, 4(2): 79-90.
-Saroyan, H., Kyzas, G Z. and Deliyann, E.A., 2019. Effective Dye Degradation by Graphene Oxide Supported Manganese Oxide, Processes, 7 (40), doi: 10.3390 / pr7010040.
-Schwarz, J.A., Contescu, C. and Contescu, A., 1995. Methods of preparation of catalyticmaterials, Chemical Reviews, 95:477–510.
-Sekine, Y., 2002. Oxidative decomposition of formaldehyde by metal oxide at room temperature. Atmospheric Environment, 36:5543–7.
-Sever, K., Tavman, I.H., Seki, Y., Turgut, A.,Omastova, M. and Ozdemir, I., 2013. Electrical and mechanical properties of expanded graphite/high density polyethylene nanocomposites¸Composites Part B: Engineering, 53: 226-233.
-Shabani Navir, N., 2013. Modified activated carbon effect on formaldehyde emission from particle board, M.Sc thesis, Tehran University.
-Sobolˇciak, P., Abdulgader, A., Mrlik, M., Popelka, A., Abdala, A.A., Aboukhlewa, A.A., Karkri, M., Kiepfer, H., Bart, H.J. and Krupa, I., 2020. Thermally Conductive Polyethylene/Expanded Graphite Composites as Heat Transfer Surface: Mechanical, Thermo-Physical and Surface Behavior, Polymers 2020, 12, 2863; doi: 10. 3390/polym12122863.
-Sousa, D.E.S., Scuracchio, C.H., Barra, G.MO. and Lucas, A.A., 2015. Chapter 7 - Expanded graphite as a multifunctional filler for polymer nanocomposites, Multifunctionality of Polymer Composites (Challenges and New Solutions): 245-261.
-Sun, J., Li, L., Yu, R., Ma, X., Jin, S., Chen, K., Chen, S., Lv, X. and Shu, Q., 2020. Synthesis and Microwave Absorption Properties ofSulfur-Free Expanded Graphite/Fe3O4Composites, Molecules, 25, 3044; doi: 10.3390/molecules251330.
-Torrey, K.S., Yrjana, W.A. and King Julia, A., 2003. Effect of thermally conductive fillers on the internal bond strength of strand board, Forest Products Journal, 53: 11-12.
-Tsai, K., Kuan, H.C., Chou, H.W., Kuan, C.F., Chen, C.H. and Chiang, C.L., 2011. Preparation of expandable graphite using a hydrothermal method and flame-retardant properties of its halogen-free flame-retardant HDPE composites, J Polym Res, 18: 483–488, DOI 10.1007/s10965-010-9440-2.
-Yahyavi, M., Khazaeian, A. and Shakeri, A., 2017. The use of black liquor and nano-graphene oxide addition to urea formaldehyde adhesive to improve the mechanical and physical properties of particleboard, Iranian Journal of Wood and Paper Science Research, 32 (3): 359-368.
-Zamani, R., 2016. Formaldehyde Release Reduction from Medium Density Fiberboard (MDF) by Using Activated Carbon Produced from MDF Sanding Dust, M.Sc thesis, Tarbiat Modares University.
-Zhang, B., Tian, Y., Jin, X., Lo, T.Y. and Cui, H., 2018. Thermal and Mechanical Properties of Expanded Graphite/Paraffin Gypsum-Based Composite Material Reinforced by Carbon Fiber, Materials, 11, 2205; doi: 10.3390/ma11112205 | ||
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