【摘要】 为了开发新型实用的环氧树脂增韧剂 ,合成了一种新型聚醚多元醇。试验结果表明 ,聚醚多元醇的分子量 (羟值 )对固化体系的初期粘度等性能没有影响 ,对固化体系的力学性能、断裂韧性和热性能等有较大影响。与未改性的环氧树脂相比 ,用FH聚醚多元醇改性环氧树脂的冲击强度增加124 % ,断裂韧性比增加89 % ,断裂能比增加260 %更多还原

【Abstract】 To develop toughening reagent for epoxy resins,a serial of novel polyethers polyols was synthesized.Testing results show that the molecular of polyethers polyols has much affection on mechanic properties,fracture toughness and heat resistance of cured epoxy resins,and less affection on initiate viscosity of modified epoxy resins.In comparison with unmodified epoxy resin,the impart strength of modified epoxy resin by FH type polyether polyols has increased by124%,the fracture toughness ratio by89%,and the fracture energy ratio by260%.更多还原