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林产化学与工业 ›› 2009, Vol. 29 ›› Issue (1): 73-78.

• 研究报告 • 上一篇    下一篇

苯酚-尿素-甲醛共缩聚树脂结构形成比较

雷洪1,2, 杜官本2, PIZZI Antonio3, 李琴4, 赵伟刚2, 方群2   

  1. 1. 南京林业大学, 木材工业学院, 江苏 南京, 210037;2. 西南林学院, 木质科学与装饰工程学院, 云南 昆明, 650224;3. ENSTIB, University of Nancy 1, Epina l88000, France;4. 浙江省林业科学研究院, 浙江 杭州, 310023
  • 收稿日期:2008-01-07 修回日期:1900-01-01 出版日期:2009-02-28 发布日期:2009-02-28
  • 通讯作者: 杜官本,教授,博士生导师,主要研究方向:木材胶黏剂化学及木质复合材料;E-mail:gongben9@hotmail.com。

Comparison of Structure Formation of Phenol-urea-formaldehyde Resin

LEI Hong1,2, DU Guan-ben2, PIZZI Antonio3, LI Qin4, ZHAO Wei-gang2, FANG Qun2   

  1. 1. Department of Wood Industry, Nanjing Forestry University, Nanjing 210037, China;2. Department of Wood Science and Interior Decoration, Southwest Forestry College, Kunming 650224, China;3. ENSTIB, University of Nancy 1, Epinal 88000, France;4. Forestry Research Institute of Zhejiang Province, Hangzhou 310023, China
  • Received:2008-01-07 Revised:1900-01-01 Online:2009-02-28 Published:2009-02-28

摘要: 13CNMR定量分析跟踪研究了两种不同合成路线中苯酚-尿素-甲醛共缩聚树脂(PUF)结构形成过程,比较了3种PUF树脂的结构构成。研究发现树脂制备过程中的酸性环境导致脲醛树脂初聚物含量增加以及尿素与苯酚之间的共缩聚增加;合成反应初期的介质环境对羟甲基酚的形成有着决定性的影响;合成过程中酸性环境所处阶段不同,最终树脂结构出现差异。

关键词: 苯酚-尿素-甲醛共缩聚树脂, 结构, 定量分析

Abstract: The progresses of structure formation of phenol-urea-formaldehyde (PUF) resin prepared in two different routes were followed by 13CNMR which allowed quantitative analysis of the main function groups in the PUF prepolymers. The structures of three different PUF resins were compared too. The results showed that the medium condition at the initial stage of the preparation had decisive effects on the formation of phenol methylol. Acidic condition caused the increase of urea-formaldehyde prepolymer and co-condensed PUF resin. The final structures of PUF resins were different when acidic condition was in different stage during the preparation.

Key words: phenol-urea-formaldehyde(PUF)resin, structure, quantitative analysis

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