中文摘要：

利用时域核磁共振（TD-NMR）,测试加入氯化锌（ZnCl2）固化剂时,脲醛树脂（UF）的固化过程,旨为胶黏剂固化研究提供新的方法。试验结果表明：通过简单操作TD-NMR,可以快速地得到UF树脂固化过程的弛豫时间分布谱图;在100～120℃范围内,ZnCl2水解生成盐酸,UF树脂分子间发生缩聚反应;当温度高于140℃时,固化反应基本结束。

英文摘要：

To find an easy way to study a curing process for urea-formaldehyde resin, the authors made use of time-domain nuclear magnetic resonance （TI）-NMR） to evaluate the process with zinc chloride as the curing agent. The results showed that relaxation time distribution for urea- formaldehyde resin in the solidification process was rapidly formed. The curing reaction of the UF resin occurred as the temperature rose from 100 ℃ to 120℃, and was completed at 140℃.