以聚酰亚胺、聚芳醚酮和聚甲亚胺等为代表的高性能高分子材料具有优异的物理化学性能,在航空航天、核工业以及微电子等领域得到了重要应用.在一些特殊行业需要聚合物具有良好的溶解性,而传统的耐高温聚合物,
A new naphthylene-containing diamine having a bulky twist structure was successfully synthesized by a Friedel-Crafts acylation reaction followed by a nucleophilic substitution reaction.A polyazomethine and a polyimide containing ether and ketone linkages were readily prepared through polycondensation reactions.Both aromatic polymers exhibit high Tg values(219 and 274 ℃),high moduli,good thermal stability and improved solubility.