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Improvement of wood properties by urea-formaldehyde resin and nano-SiO2

  • Research Article
  • Published:
Frontiers of Forestry in China

Abstract

In order to improve wood properties of triploid clones of Populus tomentosa, urea-formaldehyde (UF) resin was compounded with nano-SiO2, coupling agents and flame retardants in different ways to prepare five kinds of modifiers. The poplar wood samples were impregnated with the modifiers and heated to prepare UF-SiO2-wood composites. The antiswelling efficiency, resistance of water absorption, oxygen index and hardness of the composites were measured. Results show that all of the modifiers reduced water absorption of poplar wood and enhanced flame resistance and hardness. Nano-SiO2 showed a marked effect in improving the hardness of wood. In addition, all of the modifiers, except UF-C-SiO2-polymer, improved the dimensional stability of poplar wood. The UF resin and nano-SiO2 compound improved general properties of poplar wood.

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Authors and Affiliations

  1. College of Material Sciences and Biotechnology, Beijing Forestry University, Beijing, 100083, China

    Shi Jinshu, Li Jianzhang, Zhou Wenrui & Zhang Derong

Authors
  1. Shi Jinshu
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  2. Li Jianzhang
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  3. Zhou Wenrui
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  4. Zhang Derong
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Corresponding author

Correspondence to Shi Jinshu.

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Translated from Journal of Beijing Forestry University, 2006, 28(2): 123–128 [译自: 北京林业大学学报]

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Shi, J., Li, J., Zhou, W. et al. Improvement of wood properties by urea-formaldehyde resin and nano-SiO2 . Front. Forest. China 2, 104–109 (2007). https://doi.org/10.1007/s11461-007-0017-0

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