Synthesis of low toxic urea formaldehyde resin

YU Hong-wei; FU Shen-yuan; HUAI Min; SHAO Qian-jun; WEN Gui-feng; HE Li-ping

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Volume 19 Issue 2

Jul. 2017

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Article Navigation > Journal of Zhejiang A&F University > 2002 > 19(2): 122-126

YU Hong-wei, FU Shen-yuan, HUAI Min, SHAO Qian-jun, WEN Gui-feng, HE Li-ping. Synthesis of low toxic urea formaldehyde resin[J]. Journal of Zhejiang A&F University, 2002, 19(2): 122-126.

Citation:

YU Hong-wei, FU Shen-yuan, HUAI Min, SHAO Qian-jun, WEN Gui-feng, HE Li-ping. Synthesis of low toxic urea formaldehyde resin[J]. Journal of Zhejiang A&F University, 2002, 19(2): 122-126.

Synthesis of low toxic urea formaldehyde resin

1.
Faculty of Engineering , Zhejiang Forestry College , Lin'an 311300, Zhejiang , China

Publish Date: 2002-06-20

Abstract

In order to prepare low toxic UF resin for making plywood , the article adopts different modifier and advanced technological design .The results show that a urea formaldehyde resin which has low content of free formaldehyde (3 g kg-1) is developed on the basis of using melamine , polyvinyl alcohol and advanced technologicl design .Three layer plywood release 1.36 mg L-1 of free formaldehyde .The influence of diverse reaction condition on free formaldehyde content have been discussed in details .In the during of making the resin , some questions have been discussed and answered :the mole ratio of resin is about 1.3 , the amount of melamine ,polyvinyl alcohol is 1.6 % and 2.5 % of the total amount of urea .In addition reaction stage , the pH of resin can not below 7.0 ;In condensation stage , the temperation is 80 ～ 85 ℃, and the pH is 4.0 ～ 4.2 。
- low toxic urea formaldehyde resin,
- modifying agents,
- synthetic technology

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通讯作者: 陈斌, bchen63@163.com

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沈阳化工大学材料科学与工程学院沈阳 110142

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Synthesis of low toxic urea formaldehyde resin

1. Faculty of Engineering , Zhejiang Forestry College , Lin'an 311300, Zhejiang , China

Publish Date: 2002-06-20

Key words:

Abstract: In order to prepare low toxic UF resin for making plywood , the article adopts different modifier and advanced technological design .The results show that a urea formaldehyde resin which has low content of free formaldehyde (3 g kg-1) is developed on the basis of using melamine , polyvinyl alcohol and advanced technologicl design .Three layer plywood release 1.36 mg L-1 of free formaldehyde .The influence of diverse reaction condition on free formaldehyde content have been discussed in details .In the during of making the resin , some questions have been discussed and answered :the mole ratio of resin is about 1.3 , the amount of melamine ,polyvinyl alcohol is 1.6 % and 2.5 % of the total amount of urea .In addition reaction stage , the pH of resin can not below 7.0 ;In condensation stage , the temperation is 80 ～ 85 ℃, and the pH is 4.0 ～ 4.2 。

YU Hong-wei, FU Shen-yuan, HUAI Min, SHAO Qian-jun, WEN Gui-feng, HE Li-ping. Synthesis of low toxic urea formaldehyde resin[J]. Journal of Zhejiang A&F University, 2002, 19(2): 122-126.

Citation:

YU Hong-wei, FU Shen-yuan, HUAI Min, SHAO Qian-jun, WEN Gui-feng, HE Li-ping. Synthesis of low toxic urea formaldehyde resin[J]. Journal of Zhejiang A&F University, 2002, 19(2): 122-126.

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