金属氧化物催化下制备快速固化苯酚-尿素-甲醛树脂的性能

莫弦丰; 范东斌; 秦特夫; 储富祥

doi:10.19455/j.mcgy.2014.06.003

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金属氧化物催化下制备快速固化苯酚-尿素-甲醛树脂的性能
Phenol-Urea-Formaldehyde Resin Catalyzed with Divalent Metal Oxides
1. 中国林科院木材工业研究所
2. 国家林业局木材科学与技术重点实验室
3. 南京林业大学
2014年28卷第6期页码：9-12
DOI： 10.19455/j.mcgy.2014.06.003

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[1]莫弦丰,范东斌,秦特夫,储富祥.金属氧化物催化下制备快速固化苯酚-尿素-甲醛树脂的性能[J].木材工业,2014,28(06):9-12+23.

MO Xian-feng, FAN Dong-bin, QIN Te-fu, et al. Phenol-Urea-Formaldehyde Resin Catalyzed with Divalent Metal Oxides[J]. China Wood Industry, 2014,28(6):9-12.
[1]莫弦丰,范东斌,秦特夫,储富祥.金属氧化物催化下制备快速固化苯酚-尿素-甲醛树脂的性能[J].木材工业,2014,28(06):9-12+23. DOI： 10.19455/j.mcgy.2014.06.003.

MO Xian-feng, FAN Dong-bin, QIN Te-fu, et al. Phenol-Urea-Formaldehyde Resin Catalyzed with Divalent Metal Oxides[J]. China Wood Industry, 2014,28(6):9-12. DOI： 10.19455/j.mcgy.2014.06.003.

摘要

采用4种二价金属氧化物作为催化剂,探讨催化剂类别、加入阶段、加入量、甲醛添加量、氢氧化钠添加量等5个因素,对合成苯酚-尿素-甲醛（PUF）树脂性能的影响。结果表明:5个因素对PUF树脂凝胶时间、试件的胶合强度均有影响;与对照PUF树脂相比,采用优化工艺合成PUF树脂的热压时间和凝胶时间均明显缩短。

Abstract

CaO,MgO,ZnO and BaO were used as catalysts to make phenol-urea-formaldehyde（PUF）resins.The molar ratio effects of formaldehyde to urea plus phenol,molar ratio of sodium hydroxide to phenol,and adding stage,adding amount and type of divalent metal oxide on panel bonding strength,gel time and pot life were evaluated and optimized through orthogonal experimentation.The results showed that divalent metal oxides as catalysts were effective to make fast curing PUF resin with shortened gel time compared with the control resin.The optimized parameters were 0.50% ZnO of phenol mass added at the reaction beginning with 2.0molar ratio of formaldehyde to urea plus phenol and 0.6molar ratio of sodium hydroxide to phenol.