以两步法合成自凝性松香改性酚醛树脂,重点研究了酚醛浆的合成,通过考察酚醛摩尔比、催化剂用量、反应温度和反应时间对酚醛浆缩合反应的影响,得到适宜的酚醛浆合成条件:酚醛摩尔比1:1:5,催化剂用量为对叔丁基苯酚质量的3％,反应温度60℃,反应时间2．5-3 h。并对酚醛浆进行了GPC、VPO及红外光谱分析。利用该酚醛浆合成了具有良好自凝性的松香改性酚醛树脂。 A two-step synthesis of self-curing rosin modified phenolic resin, focusing on the synthesis of phenolic syrup, phenolic aldehyde slurry by examining the phenolic resin molar ratio, the amount of catalyst, reaction temperature and reaction time on the condensation reaction of phenolic syrup obtained appropriate phenolic syrup Conditions: Phenol molar ratio of 1: 1: 5, the amount of catalyst p-tert-butyl phenol 3% of the mass, the reaction temperature is 60 ℃, the reaction time 2.5-3 h. Phenolics were analyzed by GPC, VPO and IR spectroscopy. With the phenolic aldehyde, a rosin modified phenolic resin with good self-curing property was synthesized.