Performances of Modified Urea-formaldehyde Resins for Bonding Plywood

被引：0

作者：

Zhang, Jizhi ^{[1
]}

Liu, Xiaoying ^{[1
]}

Qiu, Yingying ^{[1
]}

Wang, Xiaomei ^{[1
]}

Li, Jianzhang ^{[1
]}

Zhang, Shifeng ^{[1
]}

机构：

[1] Beijing Forestry Univ, Minist Educ Wood Sci & Engn, Key Lab, Coll Wood Sci & Technol, Beijing 100083, Peoples R China

来源：

FRONTIERS OF GREEN BUILDING, MATERIALS AND CIVIL ENGINEERING, PTS 1-8 | 2011年 / 71-78卷

关键词：

Urea-formaldehyde resin; Modifier; DTA; Plywood; Formaldehyde emission; BEHAVIOR;

D O I：

10.4028/www.scientific.net/AMM.71-78.3170

中图分类号：

TU [建筑科学];

学科分类号：

0813 ;

摘要：

Urea-formaldehyde resin was modified by a modifier with different synthetic processes labelled as UFM1, UFM2, and UFM3 respectively. As a comparison, normal UF resin with a F/U molar ratio of 1.1 labelled as UF0 was synthesized. The thermal behavior of modified urea-formaldehyde resins was studied by TG-DTA techniques, and the properties of plywood bonded with the UFM resins were investigated. The conclusions were as follows: (1) the modifier used in this study could significantly reduce the free formaldehyde content of urea-formaldehyde resin and the formaldehyde emission of plywood; (2) The exothermic peak temperatures of DTA curve were 129.37, 125.05, 120.98, and 116.11 degrees C for UFO, UFM1, UFM2, and UFM3 respectively. (3) The plywood manufactured with UFM2 and UFM3 resins have high bonding strength (1.28MPa and 1.59MPa) and low formaldehyde emission value (El grade).

引用

页码：3170 / 3173

页数：4

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