[1]张　跃,叶　涛,刘建武,等.绿色环保型微游离甲醛脲醛树脂胶的合成[J].常州大学学报(自然科学版),2009,(01):1-4.
　ZHANG Yue,YE Tao,LIU Jian -w u,et al.Study of Green Environment -Friendly Urea -Formaldehyde Resin for Wood -Based Panel[J].Journal of Changzhou University(Natural Science Edition),2009,(01):1-4.
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绿色环保型微游离甲醛脲醛树脂胶的合成()
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常州大学学报(自然科学版)[ISSN:2095-0411/CN:32-1822/N]

卷:
期数:
2009年01期
页码:
1-4
栏目:
出版日期:
2009-03-25

文章信息/Info

Title:
Study of Green Environment -Friendly Urea -Formaldehyde Resin for Wood -Based Panel
作者:
张　跃;  叶　涛;  刘建武;  严生虎;  沈介发
江苏工业学院精细化工研究所, 江苏 常州 213164
Author(s):
ZHANG Yue ;  YE Tao ;  LIU Jian -w u ;  YAN Sheng -hu ;  SHEN Jie -fa
Research Institute of Fine Chemical Engineering , Jiangsu Polytechnic University , Changzhou 213164 ;China
关键词:
尿素; 甲醛; 低游离甲醛含量; 聚合时间; 合成
Keywords:
urea ; formaldehy de ; low free formaldehyde ; poly condensation ; synthesis
分类号:
TQ 433
文献标志码:
A
摘要:
采用弱碱-弱酸-弱碱工艺, 在传统一次加料反应的基础上, 尿素与甲醛“ 分批加入, 多点分段” 控制反应过程, 进行 脲醛树脂游离甲醛含量减量化的实验。通过单因素实验, 考察F/ U 物质的量比、羟甲基化温度、缩聚反应pH 、改性剂、固化 剂等对脲醛树脂胶粘剂游离甲醛含量和性能的影响。结果显示, 当甲醛与尿素的物质的量比为1.31 ∶1 , 羟甲基化反应温度为 95 -98 ℃, 聚合反应pH 4.8 -5.1 时, 可以合成游离甲醛含量在0.1 %以下的脲醛树脂胶粘剂, 最终使由脲醛树脂胶粘剂制得 人造板的性能技术指标达到E0 级标准。
Abstract:
The process of the weak alkali -weak acid -weak alkali was used this study .On the basis of the tradition technology of adding urea in one potion to synthesize urea -formaldehyde resin , urea and formaldehy de were added by the method of “added in batches , multi -point section” , which was controlled to decrease the f ree formaldehyde of the ura -formaldehyde resin .Individual facto r experiment s were carried out , which studied the influence of the F/U molar ratio , the first adding urea temperature , the polymerization reactivity time , modifier and so on .The optimum condition was o btained :the F/U mo lar ratio 1.31 ∶ 1 , controlling the first adding urea temperature at 95 -98 ℃, polymerization reactivity pH for 4.8 -5.1 . The free formaldehyde of synthesized urea -formaldehyde resin w as less than 0.1 %.Finally , the resin could reach the national E0 level standard of resin used for wood -based panel

参考文献/References:

[1] 李东光. 脲醛树脂粘合剂[M] . 北京:化学工业出版社, 2002 , 14 -20 .
[2] 顾继友, 朱丽滨, 小野宏邦.低甲醛释放脲醛树脂固化反应历 程的研究[J] .林产化学与工业, 2005 , 4 (25):11 -14 .
[3] Nem le G , Colakoglu G .The inf lu ence of l amin at ion t echnique on the p ropert ies of parti cleboard [J] .Buildin g and Envi ronment , 2002 , 47 :863 -882.
[4] 李德臣, 李薇.低毒脲醛树脂粘合剂工业生产方法[J] . 中 国粘胶剂, 1999 , 9 (1):20 -23 .
[5] 严顺英, 顾丽莉.脲醛树脂的研究现状与研究前景[J] . 化 工科技, 2005 , 13 (4):50 -54 .
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备注/Memo

备注/Memo:
作者简介:张跃(1964 -), 男, 江苏泰州人, 研究员, 主要从事精细化工、化学工艺方面的研究
更新日期/Last Update: 2009-03-25