【摘要】 为解决常规聚醚或聚酯含氟化合物简单共混相容性差的问题，本文以叠氮聚醚二元醇和含氟聚醚二元醇为初始原料，根据异佛尔酮二异氰酸酯（IPDI）中异氰酸酯基团的活性差异，通过分步预聚法，设计合成了系列含氟聚氨酯预聚物。研究了叠氮聚醚二元醇的添加方式、催化剂种类、反应温度、反应时间对第一步预聚反应的影响以及反应时间对第二步预聚反应的影响。研究结果表明：预聚反应的最佳条件为，叠氮聚醚二元醇以滴加的方式引入反应体系，在25℃、二月桂酸二丁基锡的催化下反应1 h，随后引入含氟聚醚二元醇（PEG-45）于80℃下反应4 h。反应成功合成了含氟聚氨酯预聚物。更多还原

【Abstract】 In order to solve the problem of poor compatibility in simple blending of conventionally fluorinated polyether or polyester compounds,using azide polyether diol and fluorinated polyether diol as starting materials,based on the activity differences of isocyanate groups in isophorone diisocyanate(IPDI),a series of fluorinated polyurethane prepolymers were designed and synthesized through a stepwise pre-polymerization method.The effects of the addition method,catalyst type,reaction temperature,and reaction time of azide polyether diols on the firststep of prepolymerization reaction,as well as the effects of reaction time on the second-step of prepolymerization reaction were studied.The research results showed that,the optimal conditions for the prepolymerization reaction were to introduce azide polyether diol dropwise into the reaction system,reacted for 1 hour under the catalysis of dibutyltin dilaurate at 25 ℃,and then introduced fluorinated polyether diol(PEG-45) and reacted for 4 hours at 80 ℃. The fluorinated polyurethane prepolymer was successfully synthesized in the reaction.更多还原