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›› 2011, Vol. 45 ›› Issue (5): 17-20.

• 研究报告 • Previous Articles     Next Articles

Applications of Alkali Lignin/Phenol-formaldehyde Resin in Bamboo Plywood

ZHUANG Xiao-wei1, MU You-bing2, PAN Xin1, ZHANG Jiang-li1, WANG Chun-peng2, ZHAO Lin-wu2   

  1. 1. Zhejiang Forestry Academy;Zhejiang Provincial Key Lab.of Biological and Chemical Utilizing of Forest Resources,Zhejiang Province, Hangzhou 310023, China;2. Institute of Chemical Industry of Forest Products,CAF; Key and Open Lab.on Forest Chemical Engineering,SFA; Key Lab.of Biomass Energy and Material,Jiangsu Province, Nanjing 210043, China
  • Received:2011-03-28 Revised:1900-01-01 Online:2011-09-30 Published:2011-09-30

Abstract: The lignin-phenol-formaldehyde resin adhesive (KPF) was prepared by blending phenol-formaldehyde resin (PF) with alkali lignin modified by hydroxymethylation (HKLF). Effect of amount of lignin on performance of bamboo plywood was studied. The feasibility of alkali lignin-phenol-formaldehyde resin used in bamboo plywood was analyzed. The results showed that mechanical properties of bamboo plywood, such as modulus of rupture, modulus of elasticity, thickness swelling rate and bonding quality, met the standards of LY/T 1574-2000, when dose of hydroxymethylated lignin was 10 % to 30 %. Performance of bamboo plywood with KPF is almost the same as that of other similar products with PF. However, when dose of hydroxymethylated lignin was 40 %, modulus of rupture and thickness swelling rate did not meet standards. Therefore, KPF can be applied to bamboo plywood when dose of hydroxymethylated lignin was 10 % to 30 %.

Key words: alkali lignin, hydroxymethylated, phenol-formaldehyde adhesive, bamboo plywood

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