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林产化学与工业 ›› 2009, Vol. 29 ›› Issue (3): 38-42.

• 研究报告 • 上一篇    下一篇

低游离甲醛羟甲基化木质素磺酸盐-酚醛复合胶黏剂研究

穆有炳, 王春鹏, 赵临五, 储富祥   

  1. 中国林业科学研究院 林产化学工业研究所;生物质化学利用国家工程实验室; 国家林业局 林产化学工程重点开放性实验室, 江苏 南京 210042
  • 收稿日期:2008-06-16 修回日期:1900-01-01 出版日期:2009-06-30 发布日期:2009-06-30
  • 通讯作者: 储富祥(1963- ),男,研究员,博士,博士生导师,主要从事乳液聚合、胶黏剂及生物质材料研究工作。

Study on Composite Adhesive of Hydroxymethylated Lignosulfonate/Phenol-formaldehyde Resin with Low Free Formaldehyde

MU You-bing, WANG Chun-peng, ZHAO Lin-wu, CHU Fu-xiang   

  1. Institute of Chemical Industry of Forest Products, CAF; National Engineering Lab.for Biomass Chemical Utilization; Key and Open Lab.on Forest Chemical Engineering, SFA, Nanjing 210042, China
  • Received:2008-06-16 Revised:1900-01-01 Online:2009-06-30 Published:2009-06-30

摘要: 以工业木质素为原料,采用羟甲基化反应提高木质素反应活性,确定了羟甲基化反应木质素和催化剂的最佳配比:木质素与甲醛质量比为3:1、催化剂用量为 0.25%(以木质素原料计),并用FT-IR和 13CNMR 对羟甲基化反应结果进行了分析。通过羟甲基化木质素磺酸盐(HLF)与酚醛树脂(PF)共混制得木质素酚醛树脂(LPF)胶黏剂。实验结果表明,该胶具有制备工艺简单、游离甲醛低的特点,用HLF替代 40% 的PF时,其胶合强度达到国家Ⅰ类胶合板的要求。

关键词: 木质素, 酚醛树脂, 胶黏剂

Abstract: The lignin-phenol-formaldehyde resin adhesive was prepared by blending modified technical lignin with phenol-formaldehyde resin. Lignin was modified byhydroxymethylation to increase reactivity and the resultedhydroxymethylated lignin was analyzed by FT-IR and 13CNMR. The optimal conditions ofhydroxymethylation are as follows:lignin-formaldehyde mass ratio 3:1, catalyst dosage 0.25%.When 40% of phenol-formaldehyde resin(PF)was replaced byhydroxymethylated lignin, the adhesive thus formulated showed low free formaldehyde, and the bonding strength could meet the standard of type I plywood.

Key words: lignin, phenol-formaldehyde resin, adhesive

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