【摘要】 以一氯代丙二醇为原料,与氢氧化钠反应合成出缩水甘油,并通过IR、1HNMR对其进行了结构表征,优化了缩水甘油的合成工艺,在最佳合成条件下收率为84·5%。利用制备的缩水甘油与端异氰酸酯基聚氨酯预聚物反应,合成端环氧基聚氨酯,并利用红外光谱对其进行了结构表征。初步讨论了温度对封端反应的影响和缩水甘油加入量对残留-NCO含量的影响,得出最佳反应温度为70℃,最佳反应时间为6h,缩水甘油过量5%为宜。更多还原

【Abstract】 Glycidol(GLY) was prepared by 3-chloro-1,2-propanediol and alkaline compound. The structure of GLY was confirmed by IR and H-NMR. The optimal synthesis conditions were determined .Under the optimal synthesis conditions the reaction yield was 84.5%.The epoxidized polyurethane has been synthesized with the glycidol and the isocyanate terminated polyurethane resin. The structure of the varied epoxidized polyurethane were analyzed with IR. The temperature of the terminated reaction and effect of glycidol dosage on rudimental isocyanate concentration are tested. The best result can be got at 70℃and 6h,glycidol excessive dosage was 5%.更多还原