Paper Title:
Study on Curing Behavior of Low Molar Ratio Urea-Formaldehyde Resins with Different Curing Agents
  Abstract

In order to characterize the curing behavior of low molar ratio urea-formaldehyde (UF) resin, the curing time and thermal analysis in curing reaction of the UF resins and the bonding strength and formaldehyde emission of plywood bonded by five kinds of low molar ratio UF resins with six different curing agents were studied. The results indicated that the UF resins with the molar ratio of formaldehyde to urea more than 1.0 could get reasonable curing time. The heat enthalpy of UF resins significantly increased with the enhancing the acidity of curing agent. The plywood manufactured by the UF resins with 1.1 molar ratio showed much higher bonding strength and lower formaldehyde emission.

  Info
Periodical
Advanced Materials Research (Volumes 150-151)
Edited by
Jinglong Bu, Zhengyi Jiang and Sihai Jiao
Pages
965-968
DOI
10.4028/www.scientific.net/AMR.150-151.965
Citation
Y. H. Dong, Q. Gao, Y. Zhang, J. Z. Li, "Study on Curing Behavior of Low Molar Ratio Urea-Formaldehyde Resins with Different Curing Agents", Advanced Materials Research, Vols. 150-151, pp. 965-968, 2011
Online since
October 2010
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$32.00
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