【摘要】 采取两步法合成聚氨酯丙烯酸树脂（ＰＵＡ）。通过改变反应条件，研究和分析了温 度、反应时间、催化剂浓度对ＰＵＡ合成的影响，得出适宜的合成条件：反应温度为７０℃（一步）／ ８０℃（二步），催化剂量为１．２％左右，反应时间为８～９ｈ；考察了ＰＵＡ紫外光固体涂料的稳定性、硬 度、附着力等基本性能。更多还原

【Abstract】 Through changing of the reaction conditions, the effect of temperature, reaction time and catalyst concentration on synthesis of PUA and properties of coating was studied in details. The moderate conditions of synthesis PUA are: reaction temperature 70℃(I)/80 (Ⅱ), catalyst content about 1. 2 % and reaction time 8-9h. And some foundational properties, such as stability, hardness, adhesive force et al., were detected or compared.更多还原