Paper Title:
Synthesis and Application of a Modifier with Low Formaldehyde Emission to Enhance General Wood Properties
  Abstract

A preparation method of Urea-formaldehyde performed polymer(UFP) with low molecular weight and high reactivity is presented. The UFP can impregnate into wood along trachea from the ends with pressurized impregnation method. In the following heating and pressing processes of the wood, the UFP polymerizes, and it enhances stability and strength of the wood. The impregnating-pressing-drying method avoiding the disadvantage of dealing with the large specimens using vaccum-pressing method is suitable for industrial production. Results from test showed the degree of crystallinity tested by XRD were 30%, 32% in different dosage of the modifier. Utilizing a combination of low molecular weight resin impregnation and pressing resulted in a density increase of UFP treated wood from 0.214 to 0.268g/cm3. At the same time, the Young’s modulus and bending strength increased from 1.407GPa to 1.759GPa and 64MPa to 74.5MPa, respectively. But the formaldehyde emission is great reduced from 0.5% to 0.008%. It can be concluded that the effective utilization of UFP impregnated in wood is a promising technique for the production of high-strength in the drying and pressing processing.

  Info
Periodical
Advanced Materials Research (Volumes 129-131)
Edited by
Xie Yi and Li Mi
Pages
1018-1021
DOI
10.4028/www.scientific.net/AMR.129-131.1018
Citation
Y. F. Jiang, G. F. Wu, S. P. Song, H. Y. Chen, J. W. Pu, "Synthesis and Application of a Modifier with Low Formaldehyde Emission to Enhance General Wood Properties", Advanced Materials Research, Vols. 129-131, pp. 1018-1021, 2010
Online since
August 2010
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$32.00
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