【作者】 宋禹泉； 王晓慧； 姚明； 姜志国；

【Author】 SONG Yuquan;WANG Xiaohui;YAO Ming;JIANG Zhiguo;The College of Materials Science & Engineering, Beijing University of Chemical Technology;

【机构】 北京化工大学材料科学与工程学院；

【摘要】 通过二乙醇胺与环氧基团开环反应对环氧树脂进行羟基化改性制备环氧多元醇,在E-51和二乙醇胺投料摩尔比1:1、反应温度60℃、反应时间6h的条件下,制备了羟值为319.08 mgKOH/g的环氧多元醇,并且对反应过程中羟值的变化规律进行了研究,建立了通过测定实验羟值(E_t)计算反应过程中反应程度(x_t)和校正羟值(R_t)的数学模型,x_t=(756.08-E_t)/216.02,R_t=594.06-0.5E_t。此模型的建立为控制反应条件和进一步由环氧多元醇制备特种聚氨酯的配方设计提供了依据。更多还原

【Abstract】 The epoxy polyol was prepared by the hydroxylation modification of the epoxy resin through the ring-opening reaction of the epoxy group with diethanolamine.The epoxy polyol with hydroxyl value of319.08 mgKOH/g was prepared by under the conditions of which the molar ratio of E-51 and diethanolamine was 1:1,the reaction temperature was 60 ℃and the reaction time was 6 h.The change rule of the hydroxyl value in the reaction process was investigated.The mathematical model for calculating the reaction degree(x_t)and the corrected hydroxyl value(R_t)through determining the experimental hydroxyl value was established,x_t=(756.08-E_t)/216.02,R_t=594.06-0.5 E_t.The establishment of the model provides the basis for controlling the reaction condition and further designing the formulations of the special polyurethanes prepared by using the epoxy polyol.更多还原