中文摘要：

高性能耐高温树脂基复合材料是航天航空领域的关键材料，是制造下一代超音速飞机和卫星等的必备材料，已引起学术界和工业界的广泛关注．制约这一类复合材料高性能化发展的瓶颈是高性能树脂预聚体．目前广泛应用的特种工程塑料（如聚芳醚酮、聚芳砜、聚酰亚胺等）都具有全芳香性结构，

英文摘要：

A novel macrocycle-terminated polyimide oligomer and the model compound, which were considered as the most simple molecule to be representative of the oligomer, were prepared. The aromatic ether ketone macrocycle was prepared by aromatic nucleophilic substitution from （3-methoxy）phenylhydroquinone and difluorine compound under pseudohigh-dilution condition. The polyimide oligomer exhibited high thermal stability due to its wholly aromatic structure. Under heating treatment, the oligomer and the model compound can form fully aromatic thermoset polyimide by ring-opening reaction without catalyst. After crosslinking, the polyimide showed much higher glass transition temperature and excellent thermal stability with temperature at 5% mass loss above 550 ℃.