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Friday, 21 October 2016

Properties of Particleboard Made from UF with Low-formaldehyde (E1) (TECHNICAL NOTE) - International Journal of Engineering (IJE)

Published Date
IJE TRANSACTIONS A: Basics Vol. 26, No. 1 (January 2013) 45-50

S. M. Hosseini and M. Fadaei
( Received: October 13, 2012 – Accepted: November 15, 2012 )
Abstract    The objective of this study was to manufacture particleboard made from UF with low formaldehyde (E1) for use in indoor environments. The influence of UF in particles on the formaldehyde emission and its mechanical properties were investigated. The experimental results showed that the formaldehyde emission released decreased linearly with consumption UF-low formaldehyde- particle. Formaldehyde emission was below 0.3 mg/L when the weight percentage of UF particles was up to 60%. The formaldehyde emission from urea-formaldehyde resin-impregnated paper overlaid particleboard was 17% lower than UF ordinary (E2) for particleboard. Because, the bending strength, internal bonding strength decreased with increasing low-formaldehyde UF. However, the percentage thickness swelling of the particleboard decreased with increasing UF-low formaldehyde. In addition, there were significant positive relationships between the UF-low formaldehyde and the bending strength and internal bonding strength of the particleboard, which allowed evaluation of the properties of the particleboard made with UF-low formaldehyde
Keywords    Mechanical properties, UF, particleboard, formaldehyde 
چکیده    موضوع این تحقیق مطالعه اثر تخته خرده چوب های ساخته شده با چسب اوره فرمالدهید دارای فرمالدهید پایین برای استفاده در مصارف درون ساختمانی است. تخته خرده چوب با چسب UF با فرمالدهید کم (E1) ساخته شد. خواص مکانیکی تخته های ساخته شده با چسب E1 اندازه گیری و نسبت به چسب E2 مقایسه شد. چسب UF مصرفی دارای 0.3 mg/L فرمالدهید آزاد برای رزین با غلظت 60 درصد بود. انتشار فرمالدهید رزین E1 نسبت به رزین E2 مقدار 17 درصد کمتر است. با استفاده از رزین E1 نسبت به E2 , مقاومت های مکانیکی و چسبندگی داخلی کاهش پیدا کرد. اما انتشار فرمالدهید آزاد ناشی از مصرف چسب E1 کمتر از E2 محاسبه شد
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