【摘要】 用端芳香氨基聚醚(ATPE)与E-44环氧树脂组成了高强、高韧的胶粘剂。研究了胶粘剂的固化反应和固化产物的交联密度、冲击断面形貌与力学性能,及其随ATPE化学结构变化的规律。结果表明,增大ATPE分子中聚醚链段长度(MPE),胶粘剂体系的固化温度和反应热焓值(ΔH)均提高;胶粘剂固化产物的综合力学性能随着MPE增大出现最佳值。改变ATPE中末端-NH2在苯环上的位置,发现3-ATPE体系的ΔH最大;2-ATPE体系的综合力学性能最佳。更多还原

【Abstract】 A kind of advanced adhesives with high performance was based on epoxy resin and aromatic amino-terminated polyether （ATPE）. The curing reaction of ATPE/E-44 epoxy resin adhesive, and the crosslinking density, impact fracture surface as well as mechanical properties of the curing products were studied as functions of the chemical structure of ATPE. The results show that both the curing temperature and the curing enthalpy （ΔH） of the ATPE/E-44 adhesive increase with increasing the flexible polyether segment length (_PE)of ATPE. The comprehensive mechanical properties exist an optimum value with _PE. If the terminated amine position in phenyl is changed, the adhesive based on 3-ATPE shows the maximum ΔH while the adhesive based on 2-ATPE shows the best comprehensive mechanical properties.更多还原