脲醛树脂固化机理及其应用  

Curing mechanism of urea-formaldehyde resin and its application.

作　　者：李建章[1] 李文军[1] 周文瑞[1] 范东斌[1] 高伟[1] 

机构地区：[1]北京林业大学材料科学与技术学院

出　　处：《北京林业大学学报》2007年第4期90-94,共5页Journal of Beijing Forestry University

基　　金：国家科技支撑计划课题(2006BAD18B09);"948"国家林业局引进项目(2006-4-107)

摘　　要：脲醛树脂在人造板生产中的大量使用是室内空气中产生甲醛污染的主要原因.掌握脲醛树脂的固化机理将成为解决甲醛污染问题的关键.该文依据高分子缩聚的经典理论和胶体学说以及一些实验与生产事实,讨论了脲醛树脂中的游离甲醛问题、胶接制品的甲醛释放问题、脲醛树脂的耐水性问题、脲醛树脂固化速度与摩尔比以及固化剂种类的关系问题,分析了脲醛树脂固化的经典理论与胶体学说存在的问题.The wood-based boards mostly bonded with urea-formaldehyde （UF） resin are the main reasons of formaldehyde pollution of indoor air. To master the curing mechanism of UF resin is the key for resolving the formaldehyde pollution problem. According to the traditional condensation polymerization theory, colloidal concept of UF resin, and some experimental and production facts, this paper discussed the formaldehyde content of UF resin, formaldehyde emission and water resistance of wood-based boards, and the effects of molar ratios and catalysts on the curing rate of UF resin, the existent problems of the traditional condensation polymerization theory, and the colloidal concept for explaining the curing mechanism of UF resin were clarified.

关 键 词：脲醛树脂 甲醛释放 经典缩聚理论 胶体学说 

分 类 号：TQ433.4[化学工程]