【摘要】 环氧树脂与甲苯二异氰酸酯(TDI)反应生成预聚物,再加入端羟基丁二烯-丙烯腈共聚物(丁腈羟)与TDI的预聚物,用芳香族伯胺固化,可以得到增韧的环氧树脂。研究了固化剂用量及丁腈羟用量对粘接性能的影响及这种增韧环氧树脂的玻璃化转变、动态力学性能和电性能,并对反应机理进行了初步探讨。实验结果表明,丁腈羟预聚物是一种良好的环氧树脂改性剂。更多还原

【Abstract】 Toughened epoxy resin was obtained by adding isocyanate-terminated prepolymer of hydroxy-terminated butediene-acrylonitrile copolymer(HTBN) and curing agent (aromatic amine) to an epoxy resin-TDI prepolymer.The effects of the amounts of curing agent and HTBN on the adhesive properties,as well as glass transition temperature, dynamic mechanical properties and electrical properties were investigated. The reaction mechanism was briefly discussed. The results showed that the prepolymer of HTBN is a good modifying agent for epoxy resin.更多还原