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生物质化学工程 ›› 2007, Vol. 41 ›› Issue (5): 9-12.

• 研究报告 • 上一篇    下一篇

杉木苯酚液化物合成热固型酚醛树脂的研究

揭淑俊, 张求慧, 李建章   

  1. 北京林业大学 材料科学与技术学院, 北京 100083
  • 收稿日期:2007-04-16 修回日期:1900-01-01 出版日期:2007-09-30 发布日期:2007-09-30
  • 通讯作者: 张求慧(1960- ),女,北京人,副教授,硕士生导师,主要从事木材化学加工的研究。

Studies on Synthesis of Resol Phenol-formaldehyde Resin from Liquefied Chinese Fir Wood in Phenol

JIE Shu-jun, ZHANG Qiu-hui, LI Jian-zhang   

  1. College of Material Science and Technology, Beijing Forestry University, Beijing 100083, China
  • Received:2007-04-16 Revised:1900-01-01 Online:2007-09-30 Published:2007-09-30

摘要: 以杉木为研究树种,对比不同料液比(木材与苯酚质量比)液化物与甲醛在碱性环境中反应,进行热固酚醛树脂制备试验。考察不同甲醛与苯酚物质的量之比值(rF/P)、氢氧化钠与苯酚物质的量之比值(rNaOH/P)和树脂化温度对树脂理化性能的影响。结果表明,采用料液比为1:2的液化物,rF/P1.8,rNaOH/P0.7,树脂化温度 80℃ 条件下合成的杉木液化物树脂压制的杨木三层胶合板满足I类胶合板强度要求,各项物理力学性能与常规PF树脂压制的板材相当,板材的甲醛释放量为 0.1 mg/L,远低于GB/T 9846-2004《胶合板》中的E0级要求。

关键词: 苯酚, 酚醛树脂, 液化, 胶合板

Abstract: In this study, we aimed to synthesize resol phenol-formaldehyde resin from the liquefied Chinese Fir(Cunninghamia lanceolata) wood in phenol with different ratio of wood to phenol in presence of sulfuric acid as catalyst. The effects of ratio of formaldehyde to phenol (rF/P), ratio of NaOH to phenol (rNaOH/P) and resinification temperature on chemical properties of liquefied wood resins (LWR) were investigated. The resol phenol-formaldehyde adhesive could be prepared from liquefied wood (wood:phenol=1:2) in phenol at rF/P 1.8, rNaOH/P 0.7 and resinification temperature 80℃.The physical properties of the poplar three-layer plywood bonded with LWR were similar to those with normal PF resins and also satisfied the demands of I level. Free formaldehyde content of plywood (0.1 mg/L) was lower than the E0 level set by GB/T 9846-2004 Plywood.

Key words: phenol, phenol-formaldehyde resin, liquefaction, plywood

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