Synthesis of Wood Lignin-Urea-Formaldehyde Resin Adhesive

Zhe Wang; Jing Wen Xue; Jian Bo Qu; Wen Xia Liu

doi:10.4028/www.scientific.net/AMR.560-561.242

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HomeAdvanced Materials ResearchAdvanced Materials Research Vols. 560-561Synthesis of Wood Lignin-Urea-Formaldehyde Resin...

Synthesis of Wood Lignin-Urea-Formaldehyde Resin Adhesive

Abstract:

Lignin-urea-formaldehyde resin adhesive was synthesized with alkali lignin from gramineae waste pulping liquor. Alkali lignin was purified and hydroxymethylated with HCHO and then crosslinked with urea-formaldehyde resin, polyvinyl alcohol and melamine. Results showed that lignin content in purified alkali lignin was 86.91%, both binding strength and free HCHO content of urea-formaldehyde resin synthesized from hydroxymethylated lignin reached the optimum value. The proper lignin amount for preparing resin was 30%, and the binding strength at this condition was 4.56MPa, and free formaldehyde content was 0.049%.

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Periodical:

Advanced Materials Research (Volumes 560-561)

Pages:

242-246

DOI:

https://doi.org/10.4028/www.scientific.net/AMR.560-561.242

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Online since:

August 2012

Authors:

Zhe Wang, Jing Wen Xue, Jian Bo Qu, Wen Xia Liu

Keywords:

Binding Strength, Free Formaldehyde, Lignin, Urea-Formaldehyde Resin

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