聚氨酯丙烯酸酯的合成及光固化胶性能研究

以聚四氢呋喃醚二醇、甲苯-2，4-二异氰酸酯和丙烯酸羟乙酯为原料合成了稳定的聚氨酯丙烯酸酯，并利用傅立叶变挟红外光谱（FTIR）对其进行表征．考察了反应的主要影响因素。确定适宜的聚氨酯丙烯酸酯合成条件为：反应温度60-65℃、催化剂二月桂酸二丁基锡用量1．0％、反应时间5h，在此条件下，-NCO含量接近0．1％。将合成的聚氨酯丙烯酸酯制成光固化胶，对玻璃和金属有良好的粘接作用，综合性能优良。

Study on Synthesis of Polyurethane Acrylate and Property of Its Light Cured Adhesive

Polyurethane acrylate （PUA） was synthesized from polytetramethylene ether glycol, 2,4-toluene diisocyanate and hydroxyethyl acrylate, and was characterized by Fourier-transfer infrared （FTIR）. The major influential factors were investigated and the optimum synthetic conditions were obtained as follows： reaction temperature 60-65 ℃ ,catalyst DBIL dosage 1.0%,reaction time 5 h. Under above conditions,the --NCO con- tent was close to 0. 1 %. The light eured adhesive made by PuA had strong adhesive strength on glass and met- als,exhibiting good comprehensive performance.