2011•Applied Mechanics and MaterialsOpen access

Effect of Melamine Content in MUF Resin on the Durable Properties of Plywood

Xiaoying Liu, Ji Zhi Zhang, Yong Lin Yang, Shi Feng Zhang, Jian Zhang Li

Abstract

The effect of melamine content in melamine modified urea formaldehyde (MUF) resin on durable properties of plywood was investigated using ammonium chloride (NH4Cl) with different melamine/urea (M/U) ratios. The plywood specimens were exposed to laboratory accelerated aging and/or cyclic soak-dry (SD). The experiment results indicated that the melamine contents in MUF resin showed an unobservable effect on the durable properties of MUF resin bonded plywood. The mechanical properties of plywood decreased more severely after accelerated aging test in acidic condition. However, the influence of different curing catalyst contents on mechanical properties and formaldehyde emission of UF resin can be minimized by adding melamine to the resin.

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Key concepts: Melamine, Urea-formaldehyde, Curing (chemistry), Materials science, Composite material, Formaldehyde, Ammonium chloride, Melamine resin